Kenwood DMC-G7R User manual

S: SILVER, B: BLUE
Decoration plate
(B07-2372-08)
Knob (PLAY/PAUSE)
(K27-2229-08) Knob (STOP)
(K27-2231-08)
Knob (REC)
(K27-2227-08)
Front cabinet
(A02-1357-08): S
(A02-1358-08): B
Knob (EJECT)
(K27-2232-08)
Cover
(F07-1624-08)
Knob (EDIT MODE)
(K27-2230-08)
Top cover
(F07-0798-08): S
(F07-0799-08): B
POTABLE MD RECORDER
DMC-G7R
SERVICE MANUAL
© 1997-7/B51-5335-00 (K/K) 2740
In compliance with Federal Regulations, following are reproduc-
tions of labels on, or inside the product relating to laser product
safety.
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
SPECIFICATIONS
System.........................................................MiniDisc digital audio system
Read method...Noncontact optical reading system (semiconductor laser)
Rotating speed..........................................................About 400 - 900 rpm
Sampling frequency..............44.1 kHz (32 kHz and 48 kHz are converted
to 44.1 kHz and recorded)
Audio compression...........ATRAC (Adaptive Transform Acoustic Coding)
Number of channels...................................................Stereo : 2 Channels
Monaural Extended mode : 1 channel
Recording method.........................Magnetic modulation overwrite system
Error correction method...................................................AC / RC method
Frequency response.......................................20 Hz to 20,000 Hz (±3 dB)
Wow & flutter .............Less than unmeasurable limit (±0.001 % W.PEAK)
Input jack........................Line/optical combined input x 1; microphone x 1
(plug-in power type)
Output jack ..............................Headphone/remote control combined jack
Input sensitivity : MIC H.....................................................0.25 mV/10 kΩ
MIC L........................................................2.5 mV/10 kΩ
LINE ........................................................100 mV/20 kΩ
Output level :phones.....10 mW + 10 mW (Maximum output level/at 16Ω)
LINE ..................350 mV (at -12dB, standard output/50 kΩ)
Power source...DC 5 V : AC adaptor (AC 120 V, 50/60 HZ)
DC 3.6 V : Lithium ion battery x 1
DC 5 V : Car battery adaptor (sold separately, DC-C50)
DC 4.5 V : Dry batteries case (sold separately, BC-F5)
Battery life..................................................................................................
(fully charged batteries)
Dimensions (W) x (H) x (D) ....................109.2 mm x 29.8 mm x 81.3 mm
(4-5/16" x 1-3/16" x 3-3/16")
Weight (Net).................Approx. 270 g (0.59 lb)
Including the accessory rechargeable battery
Approx. 222g (0.49 lb)
not including the accessory rechargeable battery
(Continuous recording time : based on analog input and recording
monitor volume level of "0"
(Continuous playback time : based on volume level of "VOL 20")
• Time of use may vary depending on battery maker, batter type,
use environment, and temperature.
1. KENWOOD follows a policy of continuous advancements in development, For reason specifications may be changed without notice.
2. The full performance may not be exhibited in an extremely cold location (under a water-freezing temperature).
Type of battery Continuous Continuous
playback time recording time
Rechargeable battery only Approx. 9.5 hours Approx. 7 hours
Alkaline batteries Approx. 24 hours Approx. 17 hours
Rechargeable battery + Approx. 35 hours Approx. 25 hours
Alkaline batteries
NotesNotes
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 2

DMC-G7R
2
CONTENTS / ACCESSORIES
Accessories
AC adaptor(1)
(W08-0668-08) : K
(W08-0669-08) : M
(W08-0670-08) : E
(W08-0671-08) : T
Rechargeable battery (NB-L5) (1)
(W03-5679-08)
Remote control (1)
(A70-1129-05) : M
Remote control unit (1)
(A70-1177-05) : KET
Carrying case (1)
(W01-0918-08)
Stereo headphone(1)
(W01-0920-15) : MET
Stereo headphone(1)
(W01-0941-15) : K
Patch cord (1)
(E30-2836-08)
Contents
SPECIFICATIONS.......................................Front cover
CONTENTS / ACCESSORIES ....................................2
DISASSEMBLY FOR REPAIR.....................................3
TROUBLE SHOOTING................................................5
PC BOARD ................................................................19
SCHEMATIC DIAGRAM............................................23
EXPLODED VIEW .....................................................27
PARTS LIST...............................................................29
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 3

Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take the battery and minidisc out of the unit.
2. When disassembling the machine, be sure to withdraw
the power plug from the socket in advance.
3. When disassemble the parts, remove the nylon band or
wire holder as necessary.
To assemble after repair, be sure to arrange the wires as
they were.
If a screw of different length is fitted to the MD mecha-
nism (the screw of the part to be fitted to the MD
mechanism chassis), it may contact the optical pickup,
resulting in malfunction.
4.Whenrepairing,pay due attentiontoelectrostaticcharges
of IC.
1 Bottom Cover 1. Screw..................... (A1) x5 7-1
2 Disc Cover 1. Screw..................... (B1) x4 7-1
(Note) 2. Flexible PWB......... (B2) x1
3 Main PWB 1. Screw..................... (C1) x3 7-2
2. Flexible PWB......... (C2) x4
3. Soldering ............... (C3) x2
4 Front Cabinet 1. Screw..................... (D1) x1 7-2
2. Remove the front cabinet in
the arrow direction.
REMOVAL PROCEDURE
STEP FIGURE
Bottom Cover
(B1) x2
Ø2x2mm
(B1) x2
Ø2x2mm (A1) x2
Ø2x2mm
(A1) x2
Ø2x2mm
(A1) x1
Ø2x2mm
(B2) x1
Disc Cover
Figu re 7-1
Figure 7-2
Eject knob lever
Eject lever Lid opening and closing spring
Lid opening and closing spring
Lid opening and closing lever
Engage the spring
at the upper side.
Lid opening and closing lever
<A>
Figure <A>
Figure 7-3
Figure 7-4
Note:
When removing the upper lid, at first turn the operation knob
side in the arrow direction to remove.
Installing the front cabinet (See Fig. 7-3.)
1. Make sure that the lid opening and closing spring has been
engaged at the upper side as shown in Figure < A > .
2. Fit the MD lid right pin into the lid opening and closing lever
to install it.
Note:
• Take care since the antivibration rubber may come off.
• If the main PWB has been installed previously, fit the knob to
the HOLD switch shown in Figure < B > .
• If the mechanism has been installed, the antivibration rubber
may come off from the center cabinet fitting part when the
front part of center cabinet is widened.
(C1) x3
Ø2x2.5mm
(D1) x1
Ø2x2.5mm
(C3) x1
(C2) x2
(C3) x1
Main PWB
Front Cabinet
(C2) x2
Front Cabinet
Lid opening and closing lever Center Cabinet
<A>
Antivibration rubber
HOLD knob
MD lid
MD lid right pin
SW
<B>
DMC-G7R
3
DISASSEMBLY FOR REPAIR
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 6

DMC-G7R
4
DISASSEMBLY FOR REPAIR
Remove the mechanism according to the disassembling meth-
ods 1 to 4. (See Page 7.)
How to remove the disc motor (See Fig. 8-1.)
1. Remove the solder joint (A1) x 1 of flex PWB.
2. Remove the screws (A2) x 3 pcs. and remove the disc
motor.
Take care so that the turnrable is not damaged.
Figure 8-4
(A2) x 3
Ø1.4 x 4.5mm
Flexible PWB
solder joint
(A1) x1
Disc Motor
Motor Spacer
Mechanism PWB
Mechanism
Figure 8-1
(B2) x2
Ø1.4x2.2mm
(B1) x2
Remove the solder joint.
Slide Motor
Figure 8-2
Figure 8-3
Shaft (C2) x 1
(C1) x 2
Ø1.4 x 3mm
(C1) x 1
Ø1.4 x 2.5mm (C1) x 1
Ø2 x4.5mm
Pickup Unit
Magnetic field arm block
Magnetic head
Head intervening flexible PWB
(D1) x1
Ø1.4x2mm
Unsolder
(D2) x2
How to remove the slide motor (See Fig. 8-2.)
1. Remove the solder joint (B1) x 1 of slide motor lead wire.
2. Remove the screw (B2) x 1, and remove the slide motor.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is raised in search mode.)
How to reinstall the optical pickup unit
(See Fig. 8-3.)
1. Remove the screws (C1) x 5 pcs.
2. Remove the magnetic fielt arm block from the pickup, and
move the magnetic field arm block outwards.
Note:
Take due care so that the magnetic head is not damaged.
3. Withdraw a little the slide motor side shaft (C2) x 1 pcs., and
slowly raise the optical pickup.
How to remove the magnetic head
(See Fig. 8-4.)
1. Remove the screw (D1) x 1 pc.
2. Remove the unsolder (D2) x 2 pcs. which connects the
magnetic head and the head hookup flex.
Note:
Mount carefully so as not to damage the magnetic head.
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 7

DMC-G7R
5
TROUBLE SHOOTING
• Abnormal display
No
Yes
Is waveform output from IC 401 pins 13 to 15?
Check for pattern breakage of flexible PWB, check for
defects of display microcomputer (replace the display unit).
Is waveform output from CNS 402 pins 1 to 3?
Are the pin7 (VCC) and pin 6 (GND) normal?
• Playback state cannot be set
Is playback state unsettable for high reflection disc and low
reflection disc?
Yes
Check between IC401 and
CNS402.
No
Check the periphery of IC401.
Proceed to "Test mode check".
Yes
Only the low reflection disc cannot be played back.
Only the high reflection disc cannot be played back.
Yes
Is the pin 46 of IC401 in L state when the high reflection disc
is inserted?
Is the pin 51 of IC401 and pin 23 of IC101 in L state?
Check SW902, mechanism flexible PWB and CN601.
No
Proceed to "Test mode check".
Yes
No
Yes
Is the pin 46 of IC401 in L state when the high reflection disc
is inserted?
Is the pin 51 of IC401 and pin 23 of IC101 in L state? No
Proceed to "Test mode check".
Yes
Check SW902, mechanism flexible PWB and CN601.
It is advisable to use the TEST mode (refer to Error Data Display Mode, P15) indicating the causes of troubles before
starting repair. Causes of operation errors (up to 10 errors) are recorded as error codes. This information is useful
for repair.
When does not function
When the CD section does not operate When the objective lens of the optical pickup is dirty,this section may not operate.Clean
the objective lens,and check the playback operation.When this section does not operate even after the above step is taken,check
the following items.
Remove the cabinet and follow the troubleshooting instructions.
"Track skipping and/or no TOC(Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup lens.
Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."
Turn the power off.
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Do not touch the lens with the bare hand.
Is the power supply turned on when the remote control
button or main unit button is pressed? No Perform the check stated in item "Power is not turned on
when the PLAY button is pressed".
Perform the check stated in item "Abnormal display".
No
Yes
Does the display operate normally?
Is playback state set?
Yes
Perform the check stated in item "Playback state connot be
set".
No
Is audio output normal?
Yes
Perform the check stated in item "Audio playback circuit".
No
Is recording/playback operation normal?
Yes
Perform the check stated in item "Recording/playback
operation".
No
• Power is not turned on when the / button
is pressed.
No
No
Yes Check the periphery of remote controller and main unit
headphone terminal (J703) and IC401.
No
Is the pin 26 of IC401 in H state?
Is operation normal when the main body button is pressed?
Check the position of Hold switch.
Is power turned on when the remote control button is
pressed?
No
Are IC401 pin 50 set to "L"? Check the DISC IN (SW904) switch of mechanism PWB.
Yes
Yes
Is clock supplied to the pins 83 and 86 of IC401? No Check that voltage is applied to the periphery of IC403.
Yes
Is 2.5V applied to TP201? No Check whether there is solder touch of part connected to
the +2.5V line.
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 10

DMC-G7R
6
TROUBLE SHOOTING
Continued from the preceding page
In case of high reflection disc, proceed to the item "normal
playback".In case of low reflection disc, check whether
adjustment is within allowable range in the TOTAL level
adjustment step.
Check whether values of pins 10, 11, 14, and 15 of IC201 and
pins 30 and 32 of IC101 (TP143) change when the /
button is pressed.
No
Doesn't the disc motor run at high speed in the same step? Check ADIP waveform of pin 4 of IC201.
No
Yes
Is tracking gain adjustment within allowable range in the
same step? Check whether values of pins 16 to 19 of IC201 and TP144
(TEOUT) change when the / button is pressed.
No
Yes
Is adjustment within allowable range in tracking error
balance adjustment step? Check whether value of pin 20 of IC201 and TP144(TEOUT)
changes or DC shift occurs when the / button is
pressed.
No
Yes
Is tracking servo applied in focus gain fine adjustment step? Check waveforms of pins 54 and 55 of IC201, pins 18, 19, 21,
and 23 of IC601, pins 4 and 6 of CNS101.
No
Yes
Is slide servo applied in continuous playback step? Replace IC201.
No
Yes
Yes
Check item "Normal Playback".
• Test mode check
Insert a high reflection (low reflection) disc, and once perform automatic adjustment in AUTO mode, and then check in MANUAL mode.
Simultaneously observe waveforms of EFM(TP145), FEOUT(TP143), and TEOUT(TP144).
Does the optical pickup move to outer/inner periphery when
the / button is pressed? Check the pins 56 and 57 of IC201, the pins 25, 27, 29 and 30
of IC601, the pins 10 and 11 of CNS601, and the slide motor
terminal.
No
Is tracking error offset measurement within allowable range?
Yes
Check Vref values of pins 3 and 4 of IC101 and pin 22 of IC201.
No
Is focus error offset measurement within allowable range?
Yes
Check Vref values of pins 3 and 4 of IC101 and pin 22 of IC201.
No
Yes
Is laser power normal when laser lights? Check the pins 21 and 22 of IC101, the pins 6 and 52 of IC401,
the periphery of Q101, Q102, and Q103, CNS101, and pickup
flexible PWB insertion.
No
Yes
Does focus access occur in focus gain rough adjustment
step? Check the pins 52 and 53 of IC201, the pins 10, 12, 14, and 15
of IC601,and the pins 5 and 7 of CNS101.
No
Yes
Is adjustment out of allowable range? Check whether values of pins 10, 11, 14, and 15 of IC201, pins
30 and 32 of (IC101) (TP143) change when the / button
is pressed.
No
Does the disc motor rotate in the same step? Check as stated in item "The disc motor does not rotate".
No
Is focus servo applied in tracking gain adjustment step? Check timing of pins 91 and 92 of IC401 and TP144(TEOUT).
No
Yes
Yes
Doesn't the disc motor rotate at high speed in the same step? No Check EFM waveform of pin 23 of IC201 in case of high
reflection.
Check ADIP waveform of pin 4 of IC201 in case of low reflection.
Yes
Is tracking gain adjustment within allowable range in the
same step? Check whether values of pins 16 to 19 of IC201 and
TP144(TEOUT) change when the / button is pressed.
No
Yes
Is adjustment within allowable range in tracking error
balance adjustment step? Check whether value of pin 20 of IC201 and TP144(TEOUT)
changes or DC shift occurs when the / button is
pressed.
No
Yes
Is tracking servo applied in focus gain fine adjustment step? Check waveforms of pins 54 and 55 of IC201, pins 18, 19, 21,
and 23 of IC601, pins 4 and 6 of CNS101.
No
Yes
Is slide servo applied in continuous playback step? Replace IC201.
No
Yes
Is cluster address counted up continuously in the same step? Check waveforms of pins 53 to 56 of IC101 and pins 23 to 25 of
IC201. (In case of low reflection check also the waveform of pin
4 of IC201.)
No
Yes
Yes
Continued on the next page.
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 11

7
DMC-G7R
TROUBLE SHOOTING
• Recording/playback operation
Insert a low reflection disc, and ascertain audio output by normal playback, and then set TEST REC mode.
Yes
Does the head move down, failing to start record even
when the continuous record mode is set after address? Check voltage of pins 56 and 57 of IC401, pins 2, 4, 7, and 9 of
IC851, pins 12 and 13 of CNS601. Check whether disc is
record-inhibited.
No
Is RF waveform output TP145 in recording/playback mode?
Does level of pins 6 and 54 of IC401 and pin 22 of IC101
change depending on record and playback?
Is RF pattern output from IC201 pin 60 and CNS201 pin 2?
Yes
No Check for soldering failure of IC201 and CNS201.
No Check periphery of IC401 and IC101.
Check whether there is any damage in IC101, periphery of
Q101, and laser diode.
Yes
Check for defects of IC351 in head drive flexible PWB,
Q351 to 354, head, flexible PWB.
No Yes
Yes
Is audio monitor output given in normal mode LINE IN
record? Check waveforms of pins 111, 12, 14, 15 of IC501, pins 76 to 79 of IC201.
Is waveform obtained on IC501 pins 3 and 5?
No
Yes Check whether the pin 24 of IC501 and the pin 75 of IC401 are
in H state.
No
No Check whether the pin 8 of IC701 is in H state. Check whether
voltage of pins 13 to 15 of IC701 changes when the Record
Volume Up/Down button is pressed
Is audio waveform observed on the pins 18 and 19 of
IC703? Yes
Check whether input waveform is observed on the pins 5
and 6 of IC703.
No
• Normal playback
Is initialization performed normally in case of high reflection
disc normal playback?
When the address up to the sector address has been proved to be normal in the test mode.
Yes No
Does the playback time display act?
Check IC201 and IC202 connection line.
Is an attempt tp read repeatebly the TOC section of low
reflection disc made? No Check whether the disc is new one.
Yes
Position check in INNER mode
Yes
• Audio playback circuit
Although the playback time display is acting, no sound is given during playback in the normal mode.
No
Is audio waveform output from IC501 pins 26 and 27?
Yes
Is audio waveform output from IC703 pins 18 and 19. No Check the pins 5 and 6 of IC703.
Yes
Is audio waveform output from J703 pins 4 and 5. No Check whether there is defective solder joint of audio signal line
between IC703 and J703.
Check headphones jack,and periphery of headphone.
Yes
• The disc motor fails to rotate.
No Check the periphery of IC201.
Is waveform observed on the pins 58 and 59 of IC201 in
focus gain rough adjustment step?Is audio waveform Is
Yes
waveform observed on the pins 21 of IC601? Replace IC601.
Yes
No Check solder joints of L607, IC201, IC901, CNS601, and flexible
PWB.
No Check the lead-in switch SW901, solder joint of mechanism
PWB, and the pin 8 of CNS601.
No
Is the read-in switch turned on when the optical pickup is
moved to the innermost periphery in NORMAL mode?
(Is the pin 48 of IC401 on L level?)
Check IC201 pins 76 to 78, pin 80 and IC501 pins 11, 12, 13, 15.
Do the pins 16 and 21 of IC901 waveform observe?
Replace the disc motor.
Yes
D
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 17

TROUBLE SHOOTING
DMC-G7R
8
1. AUTO Mode
• When the STOP button is pressed while the AUTO menu
appears or during automatic adjustment, the mode changes to
the TEST mode stop state. At this time the adjustment value is
not output.
• As for operation during continuous playback refer to [Explanation
of TEST-PLAY mode].
• Adjustment NG: If the measurement value of adjustment FEO is
out of range,focus ON failure occurs or adjustment error or TZC
error occurs.
• When the high reflection disc is used, changes as follows.
TEO — FEO — Hf — Hg — Hb — Hf
• When the low reflection disc is used, changes as follows.
TEO — FEO — If — Lg — Lb — Lf — Gl — Gg — Gb — Lf
• Grating adjustment: When the focus servo and spin servo are
ON.
• : Adjustment name
• : Measurement value
• : Set value
• : Address
Operation in each TEST mode Step No. Operation and state Display
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button.
Step 3 AUTO menu. [ A U T O ]
Step 4 PLAY button -->
Slide shift to innermost periphery
Step 5 Automatic adjustment [ ]
Step 6 End of adjustment
Step 7 When adjustment is OK, the
process proceeds to (8).
When adjustment is NG, the
process proceeds to (13).
Step 8 Grating adjustment, adjustment [ A D J . O K ]
value output
Step 9 When the PLAY button is pressed,
the process proceeds to (10).
When the STOP button is pressed,
the process proceeds to (12).
Step 10 Continuous playback (pit section) [ S Q ]
Continuous playback (groove section) [ A P ]
Step 11 STOP button
Step 12 Test mode STOP state [ T E S T ]
Step 13 Adjustment value output [ A D J . N G ]
Step 14 STOP button
Step 15 Test mode STOP state [ T E S T ]
2. MAMUAL Mode
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button
Step 3 AUTO menu [ A U T O ]
Step 4 SKIP UP button x 1 times
(Or SKIP DOWN button x 9 times)
Step 5 MANUAL menu [ M A N U A L ]
Step 6 PLAY button
Step 7 Temperature measurement [ T M P : ]
Step 8 SKIP UP button
Step 9 Tracking error offset measurement [ T E O : ]
Step 10 SKIP UP button
Step 11 Focus error offset measurement [ F E O : ]
Step 12 SKIP UP button—Laser lighting [ L O N : _ _ ]
Step 13 SKIP UP button—
Slide shift to innermost periphery
Step 14-a Focus gain rough adjustment (high reflection) [ H f ]
Step 14-b Focus gain rough adjustment (low reflection) [ L f ]
Step 15 SKIP UP button
Step 16-a Pit:Tracking gain adjustment (high reflection) [ H g ]
Step 16-b Pit:Tracking gain adjustment (low reflection) [ L g ]
Step 17 SKIP UP button
Step 18-a Pit: [ H b ]
Tracking balance adjustment (high reflection)
Step 18-b Pit: [ L b ]
Tracking balance adjustment (low reflection)
Step 19 SKIP UP button
Step 20-a Pit: [ H f ]
Focus gain adjustment (high reflection)
Step 20-b Pit: [ L f ]
Focus gain adjustment (low reflection)
Step No. Operation and state Display
Step 21 Step (24) when SKIP UP button,
Step (22) when PLAY button.
Step 22 Pit section continuous playback [ S Q ]
Step 23 When the P-MODE button is pressed,
the process proceeds to (20-a) or (20-b).
Step 24 The high reflection disc is not accepted.
When the low reflection disc is used, the
process proceeds to (25).
Step 25 TOTAL signal level adjustment [ G l ]
Step 26 SKIP UP button
Step 27 Groove: Tracking gain adjustment [ G g ]
Step 28 SKIP UP button
Step 29 Groove: Tracking balance adjustment [ G b ]
Step 30 SKIP UP button
Step 31 Focus gain adjustment [ L f ]
Step 32 PLAY button
Step 33 Groove section continuous playback [ A P ]
Step 34 When the P-MODE button is pressed,
the process to (31).
Step No. Operation and state Display
• Reversing when the SKIP DOWN button is pressed.
• When the VOL UP button is pressed during adjustment, the set value
increases, and the new set value is output.
• When the VOL DOWN button is pressed during adjustment, the set
value reduces, and the new set value is output.
• When the VOL UP/DOWN button is held down, the setting changes
continuously, one cycle being 100 ms.
• When the STOP button is pressed while the MANUAL menu
appears, or during measurement or adjustment, the mode changes
to the TEST mode stop state.
• As for operation during continuous playback refer to [Explanation of
TEST-PLAY mode].
• : Measurement value
• : Set value
• : Address
• : Temperature code
Test disc
MD adjustment needs two types of disc, namely recording disc (low reflection disc) and playback-only disc (high
reflection disc).
Type Test disc Parts No. Price Code
1High reflection disc ESYA 1014 (SONY)
2 Low reflection disc Recording minidisc UDSKM0001AFZZ AZ
Note: Use the low reflection disc on which music has been recorded.
Microcomputer version EEPROM version
Destination
Entering the TEST mode
1. Setting at port (in standby state, disc-free state or power nonconnected state)
(1) Set the port as follows.
TEST1 : "Low"
TEST0 : "High"
(2) Press the PLAY button in the standby state (it is allowed to insert the disc or to connect the power supply).
(3) Test Mode STOP [ _ T E S T _ ]
2. Setting by special button operation (in standby state)
(1) Holding down the DISP button and ENTER button, press the PLAY button.
(2) Normal mode setting initialization (BASS setting, VOL setting, etc.)
(3) Indication of microcomputer version for one second [ ]
(4) Whole LCD lighting for 2 seconds
(5) Test Mode STOP [ _ T E S T _ ]
*When the PLAY button is pressed during indication (3) and (4), the process proceeds to (5).
Leaving the TEST mode
(1) Press the STOP button in the TEST mode stop state or version indicating state or whole LCD lighting state.
(2) EEPROM rewrite-enable area updating, adjustment error setting (so as to adjust all the items when the power supply is turned
on in the normal mode)
(3) Change to standby state
Test Mode
1. AUTO Mode • Automatic adjustment is performed. (After adjustment the grating adjustment mode is set.)
• Continuous playback is performed (Error rate indication, jump test).
• The temperature correction is performed only when servo start is performed, but the
posture correction is not performed.
2. MANUAL Mode • Temperature is displayed. (Updating in real time)
• Seeing the displayed measurement value/set value, make manualadjustment to set values
within the allowable range.
• Continuous playback is performed (error rate display, jump test).
• The temperature correction is performed only when servo start is performed, but the
posture correction is not performed.
3. RESULT Mode • Adjustment value is indicted.
• Adjustment value is changed manually. (in servo OFF state).
4. TEST-PLAY Mode • Continuous playback from the specified address is performed.
• 1 line, 10 lines or 400 lines manual jump is performed.
• C1 error rate display (pit section), ADIP error rate display (groove section)
• The temperature correction is performed only when servo start is performed, but the
posture correction is not performed during continuous playback.
5. TEST-REC Mode • Continuous record from the specified address is performed.
• Change of record laser output(servo gain is also changed according to laser output).
• The temperature correction is performed only when servo start is performed, but the
posture correction is not performed during continuous recording.
6. INNER Mode • Determine the position where the INNER switch is turned on.(only high reflection disc).
• The temperature correction is performed only when servo start is performed, but the
posture correction is not performed.
7. NORMAL Mode • The mode is changed from the TEST mode to the normal mode without adjustment.
• In the normal mode the internal operation mode, memory capacity, etc. areindicated.
• In the normal mode both temperature correction and posture correction are performed.
8. Digital input display Mode • Digital input information is displayed.
9. Error data display Mode • Error information is displayed.
• Error information is initialized.
10. E2-PROM setting mode • Factors of digital servo are changed manually. (Each servo is turned on individually.)
• Cut-off frequency of BASS1, BASS2 and BASS3 is selected manually.
• Temperature detection terminal voltage is measured, and the reference value is set.
• Defaults are selected and set.
• Setting of EEPROM protect area is updated. (In case of protect releasing)
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 18

DMC-G7R
TROUBLE SHOOTING
9
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button
Step 3 AUTO menu [ A U T O ]
Step 4 SKIP UP button x 2 times
(Or SKIP DOWN button x 8 times)
Step 5 RESULT menu [ R E S U L T ]
Step 6 PLAY button
Step 7 Indication of measurement value: [ T E O : ]
Tracking error offset
Step 8 SKIP UP button
Step 9 Indication of measurement value: [ F E O : ]
Focus error offset
Step 10 SKIP UP button
Step 11 Indication of measurement value: [ H f _ _ ]
High reflection focus gain
Step 12 SKIP UP button
Step 13 Indication of measurement value: [ H g _ _ ]
High reflection pit tracking gain
Step 14 SKIP UP button
Step 15 Indication of measurement value: [ H b _ _ ]
High reflection pit tracking balance
Step 16 SKIP UP button
Step No. Operation and state Display
3. RESULT Mode
Step 17 Indication of measurement value: [ L f _ _ ]
Low reflection focus gain
Step 18 SKIP UP button
Step 19 Indication of measurement value: [ L g _ _ ]
Low reflection tracking gain
Step 20 SKIP UP button
Step 21 Indication of measurement value: [ L b _ _ ]
Low reflection pit tracking balance
Step 22 SKIP UP button
Step 23 Indication of measurement value: [ G l _ _ ]
Low reflection TOTAL signal level
Step 24 SKIP UP button
Step 25 Indication of measurement value: [ G g _ _ ]
Low reflection groove tracking gain
Step 26 SKIP UP button
Step 27 Indication of measurement value: [ G b _ _ ]
Low reflection groove tracking balance
Step 28 STOP button
Step 29 Test mode STOP state [ T E S T ]
Step No. Operation and state Display
• Reversing when the SKIP DOWN button is pressed
• When the VOL UP button is pressed during set value indication, the set value increases, and the new set value is stored in RAM.
• When the VOL DOWN button is pressed during set value indication, the set value decreases, and the new set value is stored in RAM.
• When the VOL UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.
• When the STOP button is pressed while the RESULT menu appears, or during measurement value or set value indication, the mode
changes to the TEST mode stop state.
• : Measurement value
• : Set value
7. TEST/PLAY Mode
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button
Step 3 AUTO menu [ A U T O ]
Step 4 SKIP UP button x 3times
(Or SKIP DOWN button x 7 times)
Step 5 TEST-PLAY menu [ T _ P L A Y ]
Step 6 When the DISP button is pressed, the
process proceeds to (7).
When the PLAY button is pressed, the
process proceeds to (9).
Step 7 TEST-PLAY mode [ A d 0 0 5 0 ]
Step 8 PLAY button
Step 9 Continuous playback (pit section) [ S Q ]
Continuous playback (groove section) [ A P ]
Step 10 STOP button
Step 11 Test mode STOP state [ T E S T ]
Operation and state
Step No. Display
D
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 19

TROUBLE SHOOTING
DMC-G7R
10
5. TEST-REC Mode
Step No. Setting Method Display
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button
Step 3 AUTO menu [ A U T O ]
Step 4 SKIP UP button x 4times (Or SKIP DOWN button x 6 times)
Step 5 TEST-REC menu [ T R E C ]
Step 6 When the DISP button is pressed, the process proceeds to (7).
When the PLAY button is pressed, the process proceeds to (9).
Step 7 TEST-REC mode [ A d 0 0 5 0 ]
Step 8 PLAY button
Step 9 Continuous playback mode (groove) [ A P ]
Step 10 STOP button
Step 11 Test mode STOP state [ T E S T ]
• When the STOP button is pressed while the TEST-REC menu appears, or in the TEST-REC mode or continuous record mode, the mode
changes to the TEST mode stop state.
• When the PLAY button is pressed while the TEST-REC menu appears, the continuous record is initiated from the current pickup position.
• Whenever the DISP button is pressed in the TEST-REC mode, the address changes as follows.
0050 — 03C0 — 0700 — 08A0 — 0050 —
• Whenever the BASS button is pressed in the TEST-REC mode, the digit which is changed by the SKIP UP/DOWN button changes as
follows.
0050 — 0050 — 0050 — 0050 — 0050 —
• When the SKIP UP button s pressed in the TEST-REC mode, the digit of address specified by the BASS button is set to +1h.(0 to F)
• When the SKIP DOWN button is pressed in the TEST-REC mode, the digit of address specified by the BASS button is set to -1h. (0 to F)
* When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.
• When the VOL UP/DOWN button is pressed in the TEST-REC mode or continuous record mode, the laser record power changes.
(Servo gain changes also according to record power.)
* After the laser record power is indicated for one second, the address indication is restored. [ R P W ]
• : Address
• : Laser power cord
• Operation is disabled if the premastered disc or disc is in miserase-protected state.
6. INNER Mode
Step No.
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button
Step 3 AUTO menu [ A U T O ]
Step 4 SKIP UP button x 5 times
(Or SKIP DOWN button x 5 times)
Step 5 INNER menu [ I N N E R ]
Setting Method Display Step No.
Step 6 PLAY button
Step 7 INNER switch position measurement [ S Q ]
Step 8 STOP button
Step 9 Test mode STOP state [ T E S T ]
Setting Method Display
• When the STOP button is pressed while the INNER menu appears, the mode changes to TEST mode stop state.
• : Address
•When the STOP button is pressed while the TEST-PLAY menu appears, or in TEST-PLAY or continuous playback mode, the mode changes
to the TEST mode stop state.
• When the PLAY button is pressed while the TEST-PLAY menu appears,continuous playback is initiated from the current pickup position.
• Whenever the DISP button is pressed in the TEST-PLAY mode, the address changes as follows.
0050 — 03C0 — 0700 — 08A0 — 0050 —
• Whenever the BASS key is pressed in the TEST-PLAY mode, the digit which is changed by the SKIP UP/DOWN button changes as follows.
0050 — 0050 — 0050 — 0050 — 0050 —
• When the SKIP UP button is pressed in the TEST-PLAY mode, the digit of address specified by the BASS button is set to +1h. (0 to F)
• When the SKIP DOWN button is pressed in the TEST-PLAY mode, the digit of address specified by the BASS button is set to -1h. (0 to F)
* When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.
• When the BASS button is pressed in the continuous playback mode, the number of jump lines changes as follows.
1 — 10 — 400 — 1
* After the number of jump lines is indicated for one second, the address indication is restored. [ T R _ ]
• When the SKIP UP button is pressed in the continuous playback mode, the specified number of lines is jumped in the FWD direction.
• When the SKIP DOWN button is pressed in the continuous playback mode, the specified number of lines is jumped in the REV direction.
* When the SKIP UP/DOWN button is held down, jump is repeated every approx. 100 ms.
•Whenever the DISP button is pressed in the continuous playback mode, the indication changes as follows.
* Pit section
Continuous playback (SUBQ address indication) [ S Q ]
|
Continuous playback (C1 error indication) [ C E ]
|
Continuous playback (SUBQ address indication) [ S Q ]
* Groove section
Continuous playback (ADIP address indication) [ A P ]
|
Continuous playback (C1 error indication) [ C E ]
|
Continuous playback (ADIP error indication) [ A E ]
|
Continuous playback (ADIP address indication) [ A P ]
• : Address
• : C1 Error rate
• : ADIP Error rate
• : JUMP lines
Mechanism Adjustment
1. Optical pickup grating inspecting method
Figure 12-1 OPTICAL PICKUP GRATING DEVIATION
MEASURING METHOD
After the automatic adjustment is performed in the AUTO mode
(test mode) with the aid of high refection MD disc ("COMPLATE" is
displayed), the Lissajous's waveform (x-y) is adjusted.
1. Slightly loosen the 3 screws of spin motor, and make an
adjustment, observing the Lissajous's wavefor.
2. After adjustment tighten the screws in arder of<1> , <2> ,< 3> .
3. It confirms Lissajous's wavwform ripple mark once again.
Figure 12-2
1
3
2
Shifting the spin motor installation
position, check the Lissajous's
waveform.
OSCILLOSCOPE
GND CH1 CH2
X Y
TP141
GND
TP132
EOUT
TP133
FOUT
100Kohm
470p
470p
a
b
LISSAJOUS'S WAVEFORM
LESS THAN A:B = 3:1
100Kohm
DMC-G7R(k) COVER( 98.4.24 2:20 PM y[W 20

DMC-G7R
TROUBLE SHOOTING
11
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button
Step 3 AUTO menu [ A U T O ]
Step 4 SKIP UP button x 8times
(Or SKIP DOWN button x 2 times)
Step 5 Error data indication menu [ E D A T A ]
Step 6 PLAY button
Step 7 Indication of error data 0 [ E 0 ]
Step 8 SKIP UP button
Step 9 Indication of error data 1 [ E 1 ]
Step 10 SKIP UP button
Step 11 Indication of error data 2 [ E 2 ]
Step 12 SKIP UP button
Step 13 Indication of error data 3 [ E 3 ]
Step 14 SKIP UP button
Step 15 Indication of error data 4 [ E 4 ]
Step 16 SKIP UP button
Step 17 Indication of error data 5 [ E 5 ]
Step 18 SKIP UP button
Step 19 Indication of error data 6 [ E 6 ]
Step 20 SKIP UP button
Step 21 Indication of error data 7 [ E 7 ]
Step 22 SKIP UP button
Step 23 Indication of error data 8 [ E 8 ]
Step 24 SKIP UP button
Step 25 Indication of error data 9 [ E 9 ]
Step 26 STOP button
Step 27 Test mode STOP state [ T E S T ]
9. Error data display Mode
Step No. Setting Method Display Contents
Error Code
Error data list
11 Automatic adjustment Gain maximum or error
adjustment judgment NG during adjustment retry in TG, FG
adjustment.
12 Automatic adjustment Out of allowable range
13 Automatic adjustment Servo retry error (4 times) during
adjustment
16 Automatic adjustment TZC error in TG, TB adjustment
(TG, TB measurement value does not change.)
17 Automatic adjustment TEO, FEO allowable range error
21 Focus setting disabled
23 Track search time-over
32 P-TOC read disabled
42 U-TOC read disabled
44 U-TOC write disabled
52 Music data write disabled
71 Pickup position initialization error (Inner switch ON failure)
72 EEPROM read error
73 Record head drive disabled (EJECT operation)
82 Overvoltage detection
91 TEMP over
• Reversing when SKIP DOWN button is pressed
• When the STOP button is pressed while the error data indication menu appears or during error data indication, the mode changes to the
TEST mode stop state.
• Error data 0 is the latest error.
• Error which occurred in the TEST mode is also stored in the memory.
• When the DISP button is pressed while the error data indication menu appears, the error data is initialized. [ C L E A R _ ]
• : Error Code
Jitter checking method
JITTER MATER
TP145
(EFM) 0.33
560 ohms
100 ohm
-3V
+3V
Tr: 2SC1815
2SC1740
TP141
(GND)
IC101
7 PIN
IC701 20 PIN
IC701 17 PIN
Figure 15
After automatic adjustment is performed in the AUTO mode (low
reflection MD disc use TEST mode), jitter must be less than 32 ns.
7. NORMAL Mode
Step No. Setting Method Display
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button
Step 3 AUTO menu [ A U T O ]
Step 4 SKIP UP button x 6times
(Or SKIP DOWN button x 4 times)
Step No. Setting Method Display
Step 5 NORMAL menu [ N O R M A L ]
Step 6 PLAY button
Step 7 TOC read [ Refer to the
following description.
]
Step 8 Hereafter operation in normal mode
• When the STOP button is pressed while the NORMAl menu appears, the mode changes to the TEST mode stop state.
• Indication during operation
Indication of memory capacity on main unit LCD [ ] + Level meter
: TNO
: Internal mode
: Servo state (#3: Slide, #2: Tracking, #1: Spin, #0: Focus)
: Address
LCD remote control [ ] + TNO indication
: Internal mode
: Servo state (#3: Slide, #2: Tracking, #1: Spin, #0: Focus)
: Address
: Memory capacity (graphic indication)
• Selection of sound volume, BASS, etc. is possible (without indication)
• Recording is also possible.
8. Digital input display mode
Step No. Setting Method Display
Step 1 Test mode STOP state [ T E S T ]
Step 2 BASS button
Step 3 AUTO menu [ A U T O ]
Step 4 SKIP UP button x 7times
(Or SKIP DOWN button x 3 times)
Step 5 Digital input indication menu [ D I N M O N ]
Step 6 PLAY button
Step No. Setting Method Display
Step 7 FS code, channel status indication [ C ƒ ƒ ƒƒ ƒƒ ]
Step 8 SKIP UP button
Step 9 U bit indication 1 [ U 1 ]
Step 10 SKIP UP button
Step 11 U bit indication 2 [ U 2 † † ‡ ‡ ]
Step 12 STOP button
Step 13 Test mode STOP state [ T E S T ]
• When the STOP button is pressed while the digital input indication menu appears or during digital input information indication, the mode
changes to the TEST mode stop state.
• In case of analog input or digital input unlocking the indication data is _.
• ƒ ƒ : Control Code
• ƒƒƒƒ : Category code
• : TNO
• : INDEX
• † † : TIME(min.)
• ‡ ‡ : TIME(Sec.)
DMC-G7R(k) COVER( 98.4.24 2:20 PM y[W 21

12
DMC-G7R
TROUBLE SHOOTING
(1) Replace E2-PROM.
(2) Deprive E2-PROM of protection (connect the pins 8 and 2 of IC402).
(3) Refer to the latest E2-PROM data list.
(4) Press the Display/Lower-case Character button, Enter/Synchro button and Play/Pause button to start the test mode.
(5) Version display
[ V e r . ] E2-PROM version (C ~ Z)
Microcomputer ROM version
(6) The whole LCD lights.
(7) Test mode stop state
[ T E S T ]
(8) Press the Enter/Synchro button.
[ E E P R O M ]
(9) Perform the operation to display "E2-PROM SETTING MODE CHART", compare the E2-PROM DATA LIST with the
display, and set according to the E2-PROM DATA LIST with the VOL UP or VOL DOWN key.
(10) Set the temperature reference. (Refer to the Temperature Reference Setting Method.)
(11) Set according to the E2-PROM DATA LIST.
(12) Press the Stop button.
[ T E S T ]
(13) Press the Stop button.
(14) After data is written in E2-PROM, turn off power .
(15) Restore protection of E2-PROM (Disconnect connection made in Step (2) above).
E2-PROM (IC402) writing procedure
1. Procedure to replace E2-PROM and write initial value of microcomputer in E2-PROM
2. Temperature reference setting method (to be performed at room temperature 21 to 29°C)
(1) Test mode stop state
[ T E S T M O D E ]
(2) Measure voltage of TEMP terminal (pin 3, IC401) of microcomputer.
(3) Calculate the temperature reference, using the following formula.
(4) Round down decimal fractions of calculated temperature reference, and convert it to hexadecimal value.
(5) Correct the temperature according to the table below depending on ambient temperature.
Temperature reference = Measured voltage x 256
2.8
Ambient temperature Temperature correction
21 - 23 + 1
24 - 26 ±0
27 - 29 - 1
An example: Environmental temperature is 22°C and set voltage is 1.25V.
Temperature reference = 1.25 x 256
2.8
= 114.286
= 114 (Decimal fraction is rounded down.)
= 72 H(Conversion to hexadecimal value)
(6) Press the BASS button, and press the SKIP DOWN button.
[ E E P R O M ]
(7) Press the PLAY button, and press the SKIP button.
[ T e m p ]
(8) Press the PLAY button.
[ T E M P ] : Temperature reference
(9) Set the temperature standard value to the value obtained above with the VOL UP and VOL DOWN buttons.
(10) Press the STOP button.
[ T E S T ]
Lead-in switch position adjusting method
Note: Measure the position of lead-in switch in the INNER mode, and fix the position of lead-in switch at SUBQ FF85 to FF02.
After retightening the screw, pressing the mechanism PWB in the arrow direction, measure again the position of lead-in switch. If the
removed screw cannot be fit after position adjustment, fix with two screws.
Lead In Switch
Mechanism PWB
Remove yhe screw when
adjustment is made.
Loosen two screws
Figure 16-1
Adjustment of magnetic head mounting
position
• When the magnetic head and optical pickup have been replaced,
be sure to adjust the mounting position.
• For easier adjustment of mounting position move the optical
pickup to the center position, and then adjust the position.
1. Set the transparent disc 3 for adjustment.(*1)
2. Turn off the power supply, turn the head drive gear by hand to
lower the head.
3. Viewing the set from above, make an adjustment so that the
magnetic head aligns with the optical pickup objective lens.
• Circumferential direction: Slightly loosen the head fixing screw
(A), and shift the magnetic head fitting to align the head with the
pickup abjective lens.
• Radial direction:Turn the magnetic head circumferential adjust-
ment nut (B), and adjust to align the head with the objective lens.
*1: Before setting the disc remove the decoration plate from the
disc lid, and fix it as shown in Figure 16-2.
4. Make sure that there is a clearance as shown in Figure 16-2 and
that the magnetic head moves up and down smoothly.
5. After adjustment apply Screw Lock to the head fixing screw (A)
and adjusted magnetic head radial adjusting screw (B).
Objective
lens Clearance
Radial Direction
(Align the magnetic head
with the upper end of lens)
Circumferential direction
(Align the magnetic head
approximately with the
lens center)
Circumferential
direction
Radial
Direction
Magnetic
head
(A)
Apply a screw lack for
head fixing.
AB
Slightly loosen the head
fixing screw.
Lift Motor
The lift pin is moved in the arrow direction
Magnetic head
(B)
Figure 16-2
QCNWK0091AFZZ (13 Pin)
QCNWK0092AFZZ (14Pin)
QCNWK0093AFZZ (26 Pin)
CNS201
CNS402
CNS601
CNS401
CNS101
Extension PWB for servicing
RUNTK0400AFZZ
Pickup Flexible PWB
Flexible PWB
Headdrive flexible PWB LCD Flexible PWB
Mechanism
Flexible PWB
QCNWK0090AFZZ (7 Pin)
QCNWK0089AFZZ (6 Pin)
Main PWB
Figure 16-3
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DMC-G7R
13
TROUBLE SHOOTING
Test Mode Change Chart Test Auto Change Chart
T E S T M O D E
S T O P
BASS
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
T E S T A U T O
MEN U
M A N U A L
ADJUST
MENU
RESULT
DISP
MENU
Continuous
playback
MENU
Continuous
record
MENU
INNER position
measurement
MENU
Normal mode
MENU
Digital input
indication
MENU
Error data
indication
MENU
• When the STOP key is pressed in the specific mode,
the mode changes to the TEST mode stop state.
EEPROM
setting
MENU
T E S T
A U T O
M A N U A L
R E S U L T
T P L A Y
T R E C
I N N E R
N O R M A L
D i n M o n
E D A T A
E E P R O M
PLAY
PLAY
ADJUST
O K
ADJUST NG
: Adjustment indication
: Address indication
T E S T A U T O
M E N U
Execution of
automatic
adjustment
Adjustmentvalue output
Grating adjustment
Adjustment
value
output
Continuousplayback
MODE
• When the STOP key is pressed in the specific mode,
the mode changes to the TEST mode stop state.
A U T O
A D J . N G
A D J . O K
S Q
A P
T B A _ A 8 H C T 1 _ 1 3 H C T 2 _ A 8 H C T 3 _ 0 2 H C 0 0 _ 0 0 H C 0 1 _ 9 0 H C 0 2 _ 8 3 H C 0 3 _ 0 5 H C 0 4 _ 1 3 H C 0 5 _ 0 8 H C 0 6 _ 2 6 H C 0 7 _ 2 0 H C 0 8 _ 8 0 H C 0 9 _ 0 0 H C 1 0 _ 1 0 H C 1 1 _ 0 0 H C 1 2 _ 1 E H C 1 3 _ 0 8 H C 1 4 _ 5 C H C 1 5 _ 1 D H C 1 6 _ 1 F H C 1 7 _ 1 F H C 1 8 _ 2 0 H C 1 9 _ 2 3 H C 2 0 _ 2 4 H C 2 1 _ 1 D H C 2 2 _ 1 E H C 2 3 _ 1 E H
C 2 4 _ 1 F H C 2 5 _ 2 3 H C 2 6 _ 2 5 H C 2 7 _ 3 1 H C 2 8 _ 2 C H C 2 9 _ 2 1 H C 3 0 _ 1 E H C 3 1 _ 1 4 H C 3 2 _ 8 5 H C 3 3 _ 8 6 H C 3 4 _ 8 5 H C 3 5 _ 8 7 H C 3 6 _ 0 5 H C 3 7 _ C 0 H C 3 8 _ 0 7 H C 3 9 _ 7 0 H C 4 0 _ 0 9 H C 4 1 _ 4 0 H C 4 2 _ 0 B H C 4 3 _ 2 0 H C 4 4 _ 0 D H C 4 5 _ 1 0 H C 4 6 _ 6 5 H C 4 7 _ 5 0 H C 4 8 _ 5 0 H C 4 9 _ 1 5 H C 5 0 _ D 4 H
E2-PROM DATA LIST Focus setting Item display Set values
F G _ _ 6 C H F F 1 _ 7 0 H F F 2 _ F 0 H F F 3 _ F E H F F 4 _ 0 0 H F Z H _ E D H F L n _ F 6 H F L f _ 7 F H F P n _ 0 0 H F P f _ 8 8 H F L V _ 2 8 H W T f _ 9 0 H F S S _ 0 6 H
Item display Set values
S P G _ 1 A H S P i _ D 0 H S P m _ A 0 H S P o _ 6 8 H S P 1 _ 1 0 H S P 2 _ 6 0 H S P 3 _ F 2 H S P 4 _ F 2 H S P 5 _ 1 0 H
BASS setting
Item display Set values
B S 1 _ 0 0 H B S 2 _ 0 0 H B S 3 _ 0 0 H
TEMP setting
Item display Set values
T M _ _ Calculate values
Tracking setting
Item display Set values
T G _ _ 4 0 H T F 1 _ E 0 H T F 2 _ E 8 H T F S _ 0 0 H T B o _ 4 0 H T B t _ 6 0 H T K o _ 4 8 H T K t _ 2 8 H T D o _ 7 5 H T D t _ 1 A H S C o _ 0 0 H S C t _ 4 0 H S C m _ 5 3 H D B O _ 0 0 H C H p _ 1 0 H C L p _ F 0 H C H r _ 2 0 H C L r _ E 0 H W T m _ 9 0 H
Slide setting Item display Set values
S L G _ 8 0 H S L 2 _ 1 C H S L M _ 7 F H S L V _ 2 0 H S K k _ 7 8 H S K t _ 5 0 H S K m _ 7 8 H
Control setting
Item display Set values Item display Set values
Spin setting
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 14

DMC-G7R
14
TROUBLE SHOOTING
Manual Adjustment Change Chart Result Indication Change Chart
MANUALADJUST
MENU
PLAY
PLAY
P-MODE
PLAY
P-MODE
SKIPDOWN
SKIPDOWN
SKIPUP
SKIPUP
SKIPUP
SKIPUP
SKIPUP
SKIPUP
SKIPUP
SKIPUP
SKIPUP
SKIPDOWN
BASS
2 sec.
BASS
SKIPDOWN
SKIPDOWN
SKIPDOWN
SKIPDOWN
SKIPDOWN
SKIPDOWN
SKIPUP SKIPDOWN
SKIPUP SKIPDOWN
Temperature
measurement
TrackingErrorOffset
measurement
FocusErrorOffset
measurement
LaserON
RecordpowerlaserON
Pitsectioncontinuousplayback
Groovesectioncontinuousplayback
FGrough
adjustment
FGfineadjustment
FGfineadjustment
:measurementvalue
:Adjustmentvalue
:Addres
Pit section
TGadjustment
Pit section
TBadjustment
TOTALsignal
adjustment
•WhentheSTOP keyispressedinthespecifiedmode,the modechanges totheTESTmodestopstate.
Groovesection
TGadjustment
Groovesection
TBadjustment
M A N U A L
T M P :
T E O :
F E O :
L O N :
h f
l f
H g
L g
H b
L b
H f
L f
G l
R P W :
S Q
A P
G g
G b
L f
RESULTDISP
MENU
PLAY
SKIP DOWN
SKIP DOWN
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP UP SKIP DOWN
SKIP UP SKIP DOWN
Temperature
measurementvalue
Tracking erroroffset
measurementvalue
Focuserroroffset
measurementvalue
High reflection
FGsetvalue
High reflectionpit
sectionTGsetvalue
Lowreflection groove
sectionTBsetvalue
High reflectionpit
sectionTBsetvalue
•WhentheSTOPkeyispressedinthespecifiedmode,themodechangestotheTESTmodestopstate.
Lowreflection groove
sectionTOTAL
setvalue
Lowreflection groove
sectionTGsetvalue
R E S U L T
T M P :
T E O
F E O
H f
H g
Lowreflection
FGsetvalue
L f
Lowreflection
TGsetvalue
L g
H b
Lowreflection
TBsetvalue
L b
G l
G g
G b
:measurementvalue
:Adjustmentvalue
Continuous Playback Change Chart Inner Position Measurement Change Chart
Continuous
playbackmenu
DISP PLAY
PLAY
PLAY
PLAY
PLAY
Start address
indication1
Start address
indication2
Start address
indication3
Start address
indication4
: Address
•WhentheSTOP keyispressedinthespecifiedmode,themodechanges tothe TESTmodestopstate.
• When theSKIPUP/DOWN keyis pressed in thestartaddress indication state, theaddressofspecific
digitchanges.
• When theBASSkey is pressedin thestart addressindicationstate,thedigit of addresswhichischanged
bytheSKIPUP/DOWNkeyis changed.
T P L A Y
A D 0 0 5 0
A D 0 3 C 0
A D 0 7 0 0
A D 0 8 A 0 S Q
A P
DISPDISP
DISP
DISP
Continuousplayback
Continuous
recordmenu
DISP PLAY
PLAY
PLAY
PLAY
PLAY
Startaddress
indication1
Startaddress
indication2
Startaddress
indication3
Startaddress
indication4
DISPDISP
DISP
DISP
Continuousrecord
A P
•WhentheSTOP keyis pressedinthespecifiedmode,themodechanges tothe TESTmodestopstate.
•WhentheSKIP UP/DOWNkeyispressedin thestartaddressindicationstate, theaddressof specificdigit changes.
• When theBASSkey is pressed in thestart addressindication state, thedigit of address whichischangedbythe
SKIPUP/DOWNkeyischanged.
• When theVOL UP/DOWNkeyispressed in thestartaddress indicationstate or continuous recordstate,
therecord laserpowerchanges.
T R E C
A D 0 0 5 0
A D 0 3 C 0
A D 0 7 0 0
A D 0 8 A 0 : Address
Continuous Record Change Chart
Digitalinput
indicationmenu
FScode
Cbitdataindication
U bit 1data
indication
U bit 2data
indication
: FS Code
: Control Code
: Category Code
:TNO
: INDEX
: TIME (min)
: TIME (sec)
• WhentheSTOPkeyis pressed in thespecifiedmode, themodechanges to the
TESTmodestop state.
D i n M o n
U 1
U 2
C
PLAY
SKIP DOWN
SKIP DOWN
SKIP UP
SKIP UP
Innerposition
measurementmenu
PLAY
Position
measurement
•When the STOPkeyispressedin thespecifiedmode, the modechangestothe
TESTmodestopstate.
I N N E R
S Q
Normal Mode Change Chart
Normalmode
changemenu
Normalmode
•When the STOPkeyispressed in thespecified mode,themodechangestothe
TESTmodestopstate.
N O R M A L
# # # # # #
PLAY
Digital Input Indication Change Chart
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 15

DMC-G7R
15
TROUBLE SHOOTING
Error Data Indication Change Chart EEPROM Setting Change Chart
Errordata
indicationmenu
PLAY
DISP
SKIP DOWN
SKIP DOWN
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
Error data
0 indication
Error data
1 indication
Error data
2 indication
Error data
3 indication
Error data
4 indication
Error data
5 indication
Error data
6 indication
Error data
7 indication
Error data
8 indication
Error data
9 indication : Error Code
After2seconds
•WhentheSTOPkeyispressedinthespecifiedmode, themodechangestotheTESTmodestopstate.
E D A T A
E 0
C L E A R
E 1
E 2
E 3
E 4
E 5
E 6
E 7
E 8
E 9
EEPROM
settingmenu
PLAY
SKIP DOWN
SKIP DOWN
SKIP UP
SKIP DOWN
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
FOCUS
settingmenu
SPIN
settingmenu
TRACKING
settingmenu
SLIDE
settingmenu
BASS
settingmenu
TEMP
settingmenu
CONTROL
settingmenu
•WhentheSTOP keyispressedinthespecifiedmode,themodechangestotheTESTmodestopstate.
E E P R O M
F o c u s
S p i n
T r a c k
S l e d
B a s s
T e m p
C T R L
EEPROM Slide Setting Change Chart EEPROM TEMP Setting Change Chart
EEPROM BASS Setting Change Chart
BASSsettingmenu
PLAY
•WhentheSTOP keyispressedin thespecifiedmode,themodechangestotheTESTmodestop state.
B A S S
B S 1
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
B S 2
B S 3
:measurementvalue
TEMPsettingmenu
PLAY
: Normal setting value
: Temperature code
•WhentheSTOP keyispressedinthespecified mode,the modechangestotheTESTmode stopstate.
T E M P
T M
Slide setting menu
PLAY
:measurementvalue
•WhentheSTOPkeyispressedinthespecifiedmode,themodechangestotheTESTmodestopstate.
S l e d
S L G
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
S L 2
S L M
S L V
S K k
S K t
S L m
Controlsetting
menu
PLAY
C02 ~C48
•WhentheSTOPkeyispressedinthespecifiedmode,themodechangestotheTESTmode stopstate.
C T R L
C 0 0
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
C 0 1
C 4 9
C 5 0
:measurementvalue
EEPROM Control Setting Change Chart
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 16

DMC-G7R
16
TROUBLE SHOOTING
Can't REC • Defect occurred 10 times successively during REC-PLAY. • Check that disc is free from flaws, dust,
• During REC-PLAY, the break that full, high temperature fingerprint, black spots, etc. Check for memory taped occurred. significant disalignment and runout of disc. • When reads it, and impossibility tries it again, and an address doesn't hire you in REC state repeatedly for 20 seconds either.
Can't COPY • The following judgment was made based on the channel • Record, using the analog cable.
status of digital signal which was input from D-IN during REC-PAUSE or REC-PLAY significant disalignment and runout of disc. (1) Other than audio uses (2) Other than home-uses (3) SCNS revealed that copy is impossible.
Din UNLOCK • The following result occurred when the digital signal was • Check for troubles in D-IN signal line.
input from D-IN during REC-PAUSE or RECD-PLAY. (1) PLL of digital IN was unlocked.
TOC FULL • The domain that music turn and character information • Replace disc with another record/playback
(title of a musical composition, disk names) was registered disc having a sufficient area to write UTOC. during REC-PLAY.
UTOC ERROR • UTOC recorded in the disc could not be read. • Record, using the analog cable.
• Data of UTOC 0 to 4 was looped. • UTOC data has error. Replace disc with
another disc
? DISC • "MINI" data of system ID written with ASCII code in TOC is • The disc is nonstandard disc. Replace disc
not correct. with another disc, and check. • The disc type written in TOC is not for premastered MD, recording MD or hybrid MD.
DISC FULL • When an attempt to set REC-PAUSE was made, there was • Replace the disc with another record disc
no record-enable area in the disc. having record-enable area.
PB DISC • An attempt to set REC-PAUSE or to edit was made on the • Replace the playback-only disc with record
playback-only disc. disc.
PROTECTED • An attempt to record or edit was made on the record/ • Release the safety lug, and try again.
playback disc whose safety lug has been set to careless protected. Redo on another track.
TR. PROTECT • An attempt was made to edit the write-protected track • The track which you want to edit is write-
according to information written in UTOC. erase preventing position.
TOC FULL • When an attempt to enter REC-PAUSE or DIVIDE mode or • Replace disc with another record/playback
to write the character information was made, the UTOC disc having a sufficient area to write UTOC. writing area was full of data.
Can't EDIT • The specific editing conditions were not satisfied in editing. • Operation procedure is not proper. Redo,
following the correct operation procedure.
TEMP OVER • Because any abnormality occurred, temperature in a set • It checks it by troubleshooting.
(MD unit) became too high. • It uses it at a place of high temperature, and
is there not it?
DISC ERROR • Data weren't right or didn't just understand it as a result • Data has error or the disc has flaw. Replace
of having read data. the disc. • Abnormality occurred during a record of music data, and wasn't able to do a record justly.
TOC ERROR • An attempt to read TOC was made, but it could not be read. • Because it isn't in MD standard, TOC
• It was going to read TOC, but wasn't able to read it. information recorded in DISC tries to turn it • The servo automatic adjustment was not made correctly. into other disk.
• Because there is wound on a disk, it tries to turn it into a disk else.
UTOC ERROR • Error occurred during UTOC rewriting, resulting in UTOC • Because there is wound on a disk, it tries to
rewriting failure. turn it into a disk else.
BLANK DISC • As a result of reading of UTOC it has been revealed that • Check whether disc is record-enable disc by OCTr 0:00 the total TNO number is 0. attempting record. DEFECT • Data cannot be written in the target address data due to • Check that disc is free from dust, fingerprint
track deviation during REC-PLAY. and black spot. Check for disalignment and
runout of disc.
EXPLANATION OF ERROR DISPLAY
Error display Corrective actionErrors
EEPROM Focus Setting Change Chart EEPROM Spin Setting Change Chart EEPROM Tracking Setting Change Chart
Focussetting
menu
PLAY
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
•WhentheSTOPkey is pressed inthespecifiedmode,themode changes totheTEST modestopstate.
F o c u s
F G
SKIP UP SKIP DOWN
F F 1
F F 2
F F 3
F F 4
F Z H
F L n
F L f
F P n
F P f
F L V
W T f
F S S :measurementvalue
Spinsetting
menu
PLAY
•WhentheSTOPkey is pressed inthespecifiedmode,themode changes totheTEST modestopstate.
S p i n
S P G
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
S P i
S P m
S P o
S P 1
S P 2
S P 3
S P 4
S P 5
:measurementvalue
Trackingsetting
menu
PLAY
•WhentheSTOP keyispressedinthespecifiedmode,the modechangestotheTESTmodestopstate.
T r a c k
T G
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP UP
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
SKIP DOWN
T F 1
T F 2
T F S
T B o
T B t
T K o
T K t
T D o
T D t
S C o
SC t
D B O
C H p
C L p
C H r
C L r
W T m
:measurementvalue
DMC-G7R(k) COVER( 98.4.24 2:19 PM y[W 13

17
TROUBLE SHOOTING
DMC-G7R
TP145
(EFM) 1.8V P-P
1
CH1=500mV
*
DC P 10
PLAY Condition
500s/d
TP143
(FEOUT)
STAND-BY MODE
FOCUS START FOCUS ON
4
TP107
(F+)
5
TP206
(SENSE)
6
TP207
(FOK)
7
CH1=2V
*
DC P 10
*
DC P 10
*
DC P 10
CH4=2V
*
DC P 10
CH3=5V 100ms/dCH2=500mV
PLAYSTAND-BY
PLAY MODE
CK104
(HPFO)
2
CK102
(WBO)
3
CH1=2V
*
DC P 10
*
DC P 10 20µs/dCH2=500mV
PLAY Codition (MO DISC)
TP143
(FEOUT)
4
TP144
(TEOUT)
8
TP610
(SL+)
9
TP611
(SL-)
10
CH1=1V
DC 10:1 CH2=2V DC 10:1 CH4=2V DC 10:1
CH3=2V
DC 10:1 1s/div
PIT
(16/div)
ENV
OFFFULL ON20MHz
Bandwidth Smooth
TP144
(TEOUT)
7
TP611
(SL+)
9
TP610
(SL-)
10
CH2=2V
DC 10:1 CH4=2V DC 10:1
CH3=2V
DC 10:1 1s/div (1s/div)
ENV
CH Position To
-3div +3div-1div +1div0div
CH4
Position
-2.7 div
1
TP144
(TEOUT)
7
TP143
(FEOUT)
4
TP605
(SPDRR)
11
TP604
(VS)
12
CH2=2V
DC 10:1
CH1=2V
DC 10:1 CH4=2V DC 10:1
CH3=2V
DC 10:1 1s/div (1s/div)
ENV
CH4
Position
-2.7 div
1
CH Position To
TP605
(SPDRR)
11
TP604
(VS)
12
CH4=2V
DC 10:1
CH3=2V
DC 10:1 50ms/div (50ms/div)
ENV
CH3
Position
-2.7 div
1
CH Position To
7
1
CK105
(TOTAL)
13
CH3=1V
DC 10:1
CH1=2V
DC 10:1 CH2=2V DC 10:1 2ms/div (2ms/div)
ENV
CH2
Position
-2.7 div
1
CH Position To
TP144
(TEOUT)
7
TP605
(EFM)
1
CK105
(TOTAL)
13
CH3=1V
DC 10:1
CH1=2V
DC 10:1 CH2=2V DC 10:1 2ms/div (2ms/div)
ENV
Groove
CH2
Position
-2.7 div
1
CH Position To
TP144
(TEOUT)
7
TP104
(T+)
14
TP145
(EFM)
1
TP106
(T-)
15
CH3=1V
DC 10:1 CH4=1V DC 10:1
CH1=2V
DC 10:1 CH2=2V DC 10:1 500µs/div (500µs/div)
ENV
CH2
Position
-2.7 div
1
CH Position To
AD/DA Converter Input
SCLK
(1.4M)
17
LRCK
18
SDTI
16
MCLK
19
CH3=2V
DC 10:1 CH4=2V DC 10:1
CH1=2V
DC 10:1 CH2=2V DC 10:1 5µs/div (5µs/div)
ENV
CH Position To
CH2
Position
-2.7 div
1
NOTES ON SCHEMATIC DIAGRAM
• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to electro-
lytic capacitor, the expression “capacitance/withstand volt-
age” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
• Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
POSITION
REF. NO DESCRIPTION
SW401 DISC COVER OPEN/CLOSE OFF—ON
DELECTION
SW402 HOLD OFF—ON
SW901 LEAD IN OFF—ON
SW902,904 DISC MEDIA OFF—ON
SW903 DISC PROGRAM OFF—ON
Figure 26 TYPES OF TRANSISTORS AND DIODES
2SA1314 C
2SA2982 C
FRONT
VIEW
(G)
1(D) 2(S) 3
SB0209CP
DA221
1SS373
SB00703Q
TOP VIEW
TOP VIEW
B
(D)
(3)
E
(G)
(1)
C
(S)
(2)
TOP
VIEW
DTA114 TE
DTC144 TE
DTC323 TK
DTC144B EE
2SA1745
2SC4213 B
2SK2909
2SK2911
WAVEFORM
D
DMC-G7R(k) COVER( 98.4.24 2:20 PM y[W 23

18
PARTS DESCRIPTIONS
DMC-G7R
DMC-G7R(k) COVER( 98.4.24 2:20 PM y[W 24

ABDFHJCEGI
2
1
3
5
7
4
6
J801
J703
J701
OPTICAL/
LIVE IN
HEADPHONES
DC IN
–+
MAIN PWB-A(TOP VIEW)MAIN PWB-A(BOTTOM VIEW)
C804
L801
IC802
R413 R414 R415
R204
C203
C207
R222
IC201
C212
C211
IC202
C102
L202
C103
C101
C202
R101
R102
R143
C105
C128
C127 C130
R105 R151
C104
C129
C132
R106
C131
R104
R141
R140
R139
SW402
HOLD
C106
R144
C205
C133
C150
R142
R111
R107
C125 C126 R109 R117
R112 R119
C107
R113 R116
C122
C108
C123
C124
C120 C109 C119 R122
R120
C121
R138
C118
IC101
R121
R137 R126 R134 R145 R132
C160
R136
R133 C116 C115
C114
R160
C112
C164
R131
R423 R424
C404
C757 D862
C866
R757
C756
R756 C401
R402
C759
IC702
R401
C753
IC405
C728
D841
D402
C758
L842
C754
C846
IC703
R754
L721
C762
R762
Q841
IC803
L841
R761
C730
C761
R851
C847
L861
L751
L822
L752
D842
C849
C806
C755
R753
R752
R766
R765
R751
C869
J702
MIC IN
C827
C867
C805
R726
C724
Q721
C727
R725
C726
C723 R723 R701 R724 R703
C703
C725
C701
D821 1
3
46
1
6
57
10
12
IC822
IC804 L821
TP802
C826
R830
C828
IC821
C824
TP472
R824
BAT401
C823
R829
C812
IC806
C822
R810
R821
R822
R825
R823
C821
R826
D471
TP471
1
5
910
18
15
R813
R828
C471
R811
Q801
R471
C813
C810
C825 R827
TP473
IC801
IC406
D802
CK803
CK802
R801
TP474
TP805
TP213
TP211
C803
R474
C206
CNS402
R802
TP212
CNS201
R473
R472
TP214
TP432
14
58
TP423
TP206
TP215
TP209
TP436
R428
R425
R426
R412
TP438
R411
D401
TP434
C882
L882
CK489
IC402
TP421
CK202
TP435
TP207
IC851
C408R445
TP612
CNS601
TP613
TP204
L600
C881 1
56
10
TP610
TP606
TP607
L881
TP611
TP200
C201
TP615
TP605
C614
TP201
1
5
10
15
30
25
20
16
17 32
L612
XL201
L201
TP600
C612
C603
C615
C600
TP402
L603
TP205
IC601
L604
TP404
TP203
C601
TP403
L601
C604
TP406
TP202
C613
TP106
C602
L602
TP105
TP609
TP804
L606
R601
L607
C606
L605
TP604
TP401
C607 C605
TP803
R130
CNS401
C111
TP107
TP408
R128
Q101
R154
R129
TP442
TP104
R454
R453
R452
R451
TP122
TP411
TP139
R127
Q102
Q103
R466 R467
J422 J421
TP145
C161
J423
TP410
TP413
TP407
TP601
TP412
R436
R444
CNS101
TP608
TP125
TP409
R468
R434
TP603
R442
R435
R443
TP114
C204
TP405
C163
TP602
R433 R437 R441
R404
R405
R406
R438
TP439
R422
TP118
TP124
TP115
TP101
R429
TP109
R421
C162
TP113
TP120
TP133
TP440
TP135
TP123
TP117
CK103
R124
R125
TP441
CK104
CK102
TP134
TP126
CK101
TP136
TP143
C165
IC404
TP144
TP103
R161
TP422
TP131
CK105
R446
R171
TP132
IC401
TP110
TP807
CK514
TP141
TP431
C171
Q171
R812
L100
TP437
C811
TP100
C100
C510
CK512
CK511
C511
Q804
C505
R502 R418
C406
R417
TP414
TP500
C502
C503
R847
IC403
TP208
C501 C461
TP427
TP751
R848
R501
C405
R403
R461
C508 C407
R416
TP433
TP465
R448
TP425
C509
C845
R849
R841
R846
C842
R843
R462
R449
R447
TP424
R805
D861
C863
R806
Q802
Q803
IC501
TP426
C714
C713
C807
TP806
R500
C507
C500
510
C504
C865
C868
C850
R714
R716
L863
IC841
L500
C848
R803
L862
CK515
R844
R715
R713
R728 C715
Q711
C808
TP809
C844
C861
R804
C731
D801
TP711
C843
R727
TP709
D803
TP210
TP712
TP808
IC861
C809
C862
R717
C802
C752
IC805
TP714
TP713
C721
TP708
TP710
C751
R702
TP725
TP724
C722
TP707
TP704
IC800
IC701
C729
C712
TP727
C711
L491
TP703
C702
TP726
TP801
R720
TP705
TP723
R719
C734
C491
L800
R711
R712
C733
1213
5
1
10
15
20
24
TP722
TP721
TP706
D491
15
10 15 20 25 26
30
35
40
45
50
5155
606570
76
80
85
90
95
100 15
10 15 20 25 26
30
35
40
45
50
5155
606570
76
80
85
90
95
100
1
51015
18
19 20
25
30
3637 40 45 50 54
55
60
65
70
72
1510 12
13
15
20
24
1
14
1
26
114
15
20
25
28
1
5
10
1520
25
26
30
35
40
45
50 51
55 60 65 70
75
76
80
85
90
95
100
11
1
5
67
10
12
4
58
7
61
13
1
14
P35 8 - B
TO FLEXIBLE PWB
1
SW401
P34 3 - D
TO PICK UP UNIT
1
26
BATTERY( )
P35 12 - D
TO FLEXIBLE
PWB (7)
P34 2 - D
TO FLEXIBLE
PWB (227)
P34 2 - G
TO LCD FLEXIBLE
PWB (227)
13 1 6 6 11
BATTERY( )
OPEN/
CLOSE
BR RD(R) OR YL GR BL VL GY WH(W) BK PK
PINKBLACKWHITEGRAYVIOLETBLUEGREENYELLOWORANGEREDBROWN
COLOR
TABLE
76
12
11 10 9
13
11
25 15 14 384 18 17 16 19
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD(Component side view)
19 20
The numbers 1to (are waveform numbers shown in page 17.
DMC-G7R(K) PCB/SD 98.4.24 2:26 PM y[W 1

K M O Q SL N P R T
2
1
3
5
7
4
6
IC901
R906
510
15
20
C908 R907
24 13
12
1
SW901
SW901
LEAD IN
C911
C910
C906
R905
C907
C909
IC902
R901C903C904
C902
R902
R903
R904
C905
SW904
DISC IN
SW902
DISC MEDIA
SW903
DISC PROGRAM
14 8
71
C351
D351 D352 R361
Q352
Q354
C361
IC351
Q353Q351
C357
C353
C354
CN351
+
CNS201
CNS401
CNS601
CNS402
YL
BL
PICK UP UNIT(3)
LCD UNIT(220)
FLEXIBLE PWB UNIT
(202)
MECHANISM FLEXIBLE PWB(7)
HEAD JOINT FLEXIBLE PWB(6)
HEAD DRIVE
FLEXIBLE PWB(227)
M902
FEED MOTOR
M903
LIFT MOTOR
BK
RD
CNS101
TO MAIN PWB
P33 7 - F
TO MAIN PWB
P33 7 - D
P33 10 - B
TO MAIN PWB
P33 10 - B
TO MAIN PWB
P33 10 - B
TO MAIN PWB
HEAD DRIVE PWB-B1(BOTTOM VIEW)HEAD DRIVE PWB-B1(TOP VIEW) MECHANISM PWB-B1(BOTTOM VIEW)MECHANISM PWB-B1(TOP VIEW)
M1
SPIN MOTOR
BR RD(R) OR YL GR BL VL GY WH(W) BK PK
PINKBLACKWHITEGRAYVIOLETBLUEGREENYELLOWORANGEREDBROWN
COLOR
TABLE
EDIT/
AUTO MARK/
TIME MARK
MODE/INS
VOL. DOWN
REC
DISPLAY
ENTER
C. MODE
VOL. UP
BASS/DEL
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD(Component side view)
21 22
DMC-G7R(K) PCB/SD 98.4.24 2:26 PM y[W 2