Sharp CD-M4000W User manual

CD-M4000W/CP-M4000
sr-uUH= SERVICE MANUAL
DIGITAL AUDIO
No. S9156CDM4000W
MINI COMPONENT SYSTEM
MODEL CD-M4000W
SPEAKER
SYSTEM
MODEL CP-M4000
9 In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
/
CONTENTS
-.
Page
SAFETY PRECAUTION FOR SERVICE MANUAL
...........................................................................................................
2
VOLTAGE SELECTION
.....................................................................................................................................................
2
AC POWER
SUPPLY
CORD AND AC PLUG ADAPTOR .................................................................................................
3
SPECIFICATIONS
..........
. ................................................................................................................................................. 3
NAMES OF PARTS
...........................................................................................................................................................
4
OPERATION
MANUAL..
...... AL.. ... -
.. ................................................................................................................................... 6
DISASSEMBLY.. ................... .............................................................................................................................................
REMOVING AND REINSTALLING THE MAIN
PARTS.. .................................................................................................
1:
ADJUSTMENT
................................................................................................................................................................. 13
BLOCK DIAGRAM ...........................................................................................................................................................
17
SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD............................................................................................. .20
VOLTAGE
........................................................................................................................................................................
38
NOTES ON SCHEMATIC
DIAGRAM ..............................................................................................................................
39
TYPES
OF TRANSISTOR AND LED................................................................................................................................ 39
WAVEFORMS
OF CD
CIRCUIT......................................................................................................................................
40
TROUBLESHOOTING..
. .................................................................................................................................................
41
FUNCTION TABLE OF
IC
.................................................................
.:.
............................................................................
45
FL
DISPLAY.. .................................................................................................................................................................... 53
REPLACEMENT PARTS LIST/EXPLODED VIEW
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

Cd-M4000W/CP-M4000
SAFETY PRECAUTION FOR SERVICE MANUAL
WARNINGS
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER
COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANTTHATTHE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES
AGAINST EXPOSURE TO THE LASER BEAM.
l-WHEN THE CABINET IS REMOVED, THE POWER IS TURNED ON WITHOUT A COMPACT DISC IN POSITION AND THE
PICKUP IS ON THE OUTER EDGE THE LASER WILL LIGHT FOR SEVERAL SECONDS TO DETECT A DISC. DO NOT
LOOK INTO THE PICKUP LENS.
P-THE LASER POWER OUTPUT OF THE PICKUP UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY
PRESET BEFORE SHIPMENT.
DO NOT ATTEMPT TO READJUST THE LASER PICKUP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP LENS AT ANY TIME.
4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
CLASS 1 LASER PRODUCT
APPAREIL i LASER DE CLASSE 1
PRODUCT0 LASER DE CLASE 1
Laser Diode Properties
Material: GaAlAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
VOLTAGE SELECTION
Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the yoltage
as follows.
Turn the selector with a screwdriver until the appropriate voltage number appears in the window (1 IO V, 127 V, 220 V or 230 V-240 V AC).
-2-

CD-M4000W/CP-M4000
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCA0003AWOO
BzjggK 1
QACCE0008AWOO
QACCL0005AWOO
a -
G-Dj
0
I
I
1 K=
QPLGA0003AWZZ QPLGA0004AWZZ
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS
n Amplifier
MPO: 520 W(260 W + 260 W) (10 % T.H.D.)
RMS: 300 W(150 W + 150 W) (10 %T.H.D.)
Video/Auxiliary (audio signal): 500 mV/47 kohms
n CD player
n Tuner
Frequency range
FM: 88 - 108 MHz
AM: 531 1,602 kHz
w Cassette deck
Frequency response 50 14,000
Hz (Normal tape)
Signal/noise ratio / 55 dB (TAPE 1, Dlavbackl
150 dB (TAPE 2, &&din&playback)
Wow and flutter
IO.3 %IWRMS1
TYPO
4-way type speaker system
Super Tweeter
8 cm (3-118”) Tweeter
8 cm (3-118”) Midrange
25 cm (lo”) Woofer
Maximum input power 300
W
(Total)
Rated input power
150w
(Total)
Impedance 6
ohms
Dimensions
Width: 422 mm (16-518”)
Height’330 mm (13”)
Depth: 306 mm (12-1116”)
Weight 8.5 kg (18.7
Ibs.)/each
Specifications for this model are subject to change without
prior notice.
-3-

CD-M4000W/CP-M4000
n Front panel
1. Disc Tray
P.Timer Set Indicator
3.On/Stand-by Button
4. Tape 2 Cassette Compartment
5. Tape 1 Cassette Compartment
6. Equalizer Mode Select Button
7. Volume Control
8. Monster Bass/Demo Mode Button (with Indicator)
2
9. Disc Tray Open/Close Button
lO.Disc Number Select Buttons (with indicator)
3
11 .Disc Skip Button
lZ.Tuning and Time Up Button
13.Tape 2 Reverse Play Button (with Indicator)
14.CD Button
15Tuner (Band) Button
16.Tape (1 - 2) Button
17.Video/Auxiliary Button .
18.Dimmer Button
19.Clock Button
SO.Timer/Sleep Button
21 .Headphone Socket
22.CD or Tape Stop Button (with indicator)
23.CD Play or Repeat, Tape 1 Play,
r
Tape 2 Forward Play Button (with Indicator)
24.Tape 2 Reverse Mode Select Button
25.CD Track Up or Fast Forward, Tape 2 Fast Wind,
Tuner Preset Up Button
26.Tuning and Time Down Button
27.Memory/Set Button
28.Tape 2 Record Pause Button
29.CD Track Down or Fast Reverse, Tape 2 Fast Wind,
Tuner Preset Down Button
30,Microphone Level Control
31 .Microphone Socket
n Display
1. FM Stereo Mode Indicator
2. FM Stereo Receiving Indicator
3. Karaoke Mode Indicator
4. CD Repeat Play Indicator
5. CD Pause Indicator
6. CD Play Indicator
7. Tape 2 Record Indicator
8. Tape Reverse Mode Indicator
9. Disc Number Indicators
lO.Timer Play Indicator
11 .Memory Indicator
lP.Tape 2 Reverse Play Indicator
13.Tape 1 Play or Tape 2 Forward Play Indicator
14.Sleep Indicator
15.Timer Recording Indicator
16.Spectrum AnalyserNolume Level Indicator
26 27 28 293031
12 13 14 1516 17
2345 61
1R I
ii 13i4i5
-4-

CD-M4000W/CP-M4000
n Rear panel
1. FM 75 Ohms Aerial Terminal
2. FM Aerial Earth Terminal
3. AM Loop Aerial Socket
4. Span Selector Switch
S.Video/Auxiliary (Audio Signal) input Sockets
6. Speaker Terminals
7. AC Power Lead
8. AC Voltage Selector
n Remote control
1
1. Remote Control Transmitter
2. Echo Level Up and Down Buttons
3. Karaoke Mode Button
4. Disc Number Select Buttons
5. CD Clear Button
6. Tape 2 Record Pause Button
7. CD Track Down or Fast Reverse, Tape 2 Fast Wind,
Tuner Preset Down Button
8. Equalizer Mode Select Button
9. Tape 2 Reverse Play Button
lO.CD Button
11 .Tuner (Band) Button
12.0n/Stand-by Button
13.Monster Bass Button
A2
* 3
‘4
14 Q
15
A5
16 is
617
18
7
19
8
20
9
IO
21
11
22
12
14.CD Random Button
15.CD Memory Button
16.CD Pause Button
17.CD Track Up or Fast Forward, Tape 2 Fast Wind,
Tuner Preset Up Button
18.CD or Tape Stop Button
19.CD Play or Repeat, Tape 1 Play,
Tape 2 Forward Play Button
PO.VideolAuxiliary Button
2l.Tape (1
- 2) Button - .-
22.Volume Up and Down-Buttons
13
Buttons with “A”mark in the illustration can be operated on the remote control
only.
Other buttons can be operated both on the main unit and the remote control.
-5-

Cd-M4000W/CP-M4000
n Speaker system
1. Tweeter
2. Super Tweeter
3. Midrange
4. Woofer
5. Bass Reflex Due
6. Speaker Terminals
1
5
246
3
OPERATION MANUAL
System Connections
n Setting the AC voltage selector
Check the setting of the AC voltage selector located an the rear panel before plug-
ging the unit into a wall so&et. If necessary, adjust the selector to correspond to the
AC power voltage used I” your area.
Turn the selector with a screwdriver until the appropriate voltage num-
ber appears in the window (110 V, 127 V, 220 V or 230 V - 240 V AC).
q Connecting the AC power lead
After making all connections, plug the unit. If you plug the unit first,
the unit will enter the demonstration mode.
Note:
Unplug the AC power lea&from the wall socket if the unit will not be in use for a pro-
longed period of time.
AC Plug Adaptor
In areas (or countries) where a wall socket as shown I” illustration Q is used, connect
the unit using the AC plug adaptor supplled with the urxt, as illustrated The AC plug
adaptor IS not included in areas where the wall socket and AC power plug can be
directly connected (see lllustratlon 0).
n Setting the FM/AM span selector
The International Telecommuntcatlon Union (ITU) has establlshedthat member coun-
trues should maintain either a 100 kHz or a 50 kHz interval between broadcastingfre-
quencles of FM statons and 10 kHz or 9 kHz for AM station. The illustration shows
the 5019 kHz zones (regons 1 and 3), and the lOOI kHz zone (region 2)
Before “sing the ““It, set the SPAN SELECTOR swtch (on the rear panel) to the
Interval (span) Of your area
To change the tuning zone:
1 Press the ON/STAN D-B,’ button to enter the stand-by mode.
2 Set the SPAN SELECTOR switch (on the rear panel) as follows.
.For 50 kHz FM interval (9 kHz in.AM) + 5019
. For 100 kHz FM Interval (10 kHz ,n AM) --* iOO/lO
3Whilst pressmg down the t button and the MONSTER-BASS button. press the ON,
STAND-BY burton until “CLEAR AL” appears.
Caution:
This operation will erase all data stored in memory Including clock, timer settings,
tuner preset, and CD programme.
-6-

CD-M4000W/CP-M4000
Setting the Clock
In this example, the clock is set for the 24.hour CO:001 disolav.
._
Press the ON/STAND-BY button to turn the power on.
! Press the CLOCK button and within 5 seconds, press the MEMO.
RY/SET button.
1 Press the TUNING/TIME (v or A) button to select 24-hour or 12.
hour display and then press the MEMORY/SET button.
“0:oo”
+ The 24-hour display will appear.
(0:OO - 23:59)
“AM 12:OO”
+
The 12.hourdisplay will appear.
(AM 12’00 -PM ,159)
“AM OXlO”
+ The 12-hour display will appear.
(AM O:OO. PM 11:59)
Note that this can only be set when the unit IS first installed or it has been reset.
4 Press the TUNlNGfrlME (v or A) button to adjust the hour and then
press the MEMORY/SET button.
. Press the TUNlNG,TlME (v or A) button once to advance the time by 1 hour.
Hold it down to advance contnuousiy.
Press the TUNING/TIME (v or A) button to adjust the minutes and
then press the MEMORYISET button.
\I 1,
I /3;30,:- *
1%
qg:’
. Press the TUNlNG,TlME (v or A) button once to advance the time by 1
minute. Hold it down to change the bme in 5mmute Intervats.
sThe hour will not advance even if minutes advance from “59” to “00’
I
l The clock begins counting from “0” seconds. (Seconds are not displayed.)
The time dlsptay will disappear after a few seconds.
To confirm the time display:
Press the CLOCK button.
The time display will appear for about 5 seconds.
Note:
The “CLOCK” or iime will flash at the push of the CLOCK button when the AC power
supply is restored after a power failure or unplugging the “nit.
Readjust the clock as follows.
To readjust the clock:
Perform “Setting the Clock” from the begrnning. If the time display IS flashing, step 3
(for selecting the 24.hour or 12.hour display) will be skipped.
To change the 24-hour or Is-hour display:
1 Clear ali the programmed contents.
2 Perform “Setting the Clock” from the beginning.
Remote Control
w Test of the remote control
Face the remote control directly to the rem& sensor on the wt.
The remote control can be used within the range shown below:
Press the ON/STAND-BY button Does the power turn on? Now. you can enjoy the
music.
Remote sensor
t
O.Zm-6m
(8” - 20’)
-7-

CD-M4000W/CP-M4000
Troubleshooting Chart
Many potential problems can be resoivedby the owner without calling a service tech-
nicran.
n Cassette deck
If somethingis wrong with this product, check the following before calling your autho-
rn?d SHARP dealer or service centre.
n General
Symptom Possible cause
. The clock IS not on time. .
Did a power failure occur? Reset the
Symptom Possible cause
. Cannot record. . Is the
erase-prevent,on tab removed?
. Cannot record tracks with proper
. f?. it a normal tape? (You cannot record on
sound quality.
l Cannot erase comoletelv.
a metal or 00, tape.)
l Sound skipping. . Is there any slack?
When a button is pressed, the unit Set
tfx unit to the power stand-by mode
If the unit still malfuncbons, reset it.
Are the capstans, p,nch roifers, or heads
. Are the headphones connected?
l Are the speaker wires disconnected?
the heads remkln engaged with the tape.
Do not open the comparfmentforcibly.
Walt until electrfcity resumes.
.
Is the karaoke modesetto “L-CH”.“R-CH”
or”V-CANCEL”?
n Karaoke
w CD player
Symptom
I
Possible cause
l The vocal part of a multiplexed
. Is the karaokeinodeset to “L-CH”, “R-0,’
disc IS not heard. or “V-CANCEL”?
Symptom Possible cause
. Playback does not start.
l Is the disc loaded upside down?
w Remote control
. Playback stops m the middle or is . Does the disc satisfy the standards?
not performed properly.
l
Is the disc distorted or scratched?
. Playback sounds are skipped. or
l Is the unit located near excessive vibra-
l The remote control does not oper- .
Is the AC power lead of the unit plugged
stopped in the middle of a track.
l :?e?discverydIm/,
. Is the battery ;olarfty respected?
. Has condensation formed inside the unit? .
Is the distance or angle incorrect?
w Tuner
. Does the rem& control sensor recewe
l Radio makes unusual noise con- Is the unit placed near the TV or comput-
Is the FM aerial or AM loop aerial placed
properly? Move the AC power lead away
from the aerial if located near.
Troubleshooting Chart
w If trouble occurs
When this product is subjected to strong external interference (mechanical shock,
excessive statrc efectncity, abnormal supply voltage due to lightning, etc.) or if It is
operated incorrectly, it may malfunction.
If such a problem occurs, do the following:
1 Set the unit to the stand-by mode and turn the power on again
2 If the unit IS not restored !n the previous operabon, unplug and plug in the unit,
and then turn the power on.
Note:
if neither operationabove restores the unit, clear all the memory by resetting it
w Clearing all the memory (reset)
1 Press the ON/STAND-BY button to enter the power stand-by mode.
2 Whilst pressing down the + button and the MONSTER-BASS button, press the
ON/STAND-BY button until “CLEAR AL” appears.
Caution:
This operation will erase ail data stored in memory including clock, trmer settings,
tuner preset, and CD programme.
n Before transporting the unit
1 Press the ON/STAND-BY button to t”rn the power on.
2 Press the CD button.
3 Press the &OPEN/CLOSE button to open the disc tray.
Remove all CDs inserted in the unit.
4 Press the 6 OPEN/CLOSE button to close the disc tray.
5
Make sure that “NO DISC” IS dlspiayed
Press theON/STAND-BY button toenterthestand-by mode, and then unplug
the AC power lead from the wall socket.
-8-

CD-M4000W/CP-M4000
DISASSEMBLY
t-
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 cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
Rear Panel with
1. Turn on the power supply,
9-2
open the disc tray, take out
the CD tray cover, and close.
(Note 1)
2. Screw ....................... (Cl) xl
3.
Hook.. ....................... (C2) x3
4. Hook......................... (C3) x2
5.
Socket ......................
(C4) x2
1. Screw .....................
(Dl) x10
9-2
2.
Socket ...................... (D2)
xl
1. Screw
.......................
(El) xl 9-2
2. Flat Cable..
...............
(E2) xl IO-2
3.
Socket ......................
(E3) x4 IO-2,1O-:
1. Screw .......................
(Fl) x7 IO-3
2. Socket
......................
(F2) x2 IO-2
3. PWB Holder ............. (F3) x3
10-3
4. Flat Wire...................
(F4) xl
1. Screw.......................
(Gl) xl 10-3
2. Socket
......................
(G2) xl
2.
Hook.. .......................
(G3) x2
1. Knob.........................
(Hl) xl
2.
Screw .....................
(H2)
jO-4
x12
3. Flat Cable .................
(H3) xl
1. Open the cassette holder.
1 o-4
2. Screw (Ji) x5
1. Screw:.
..... . ...............
(Kl) xl lo-4
1. Screw..
.....................
(Ll) x2 10-4
1. Hook ........................ (Ml) x2
10-5
2. Cover ...................... (M2) xl
1. Turn fully the lock lever in the. 9-3
arrow direction.
2.Whileholdingthelock lever,rotate 1 O-l
thecam gear until the camgear
rib engages with the clamp lever.
3.Pushtheslidechassisbackwardto
1 O-6
engage the claw with the groove
and remove it in the direction
of the arrow. .................
(Nl) x6
1. Screw.
......................
(Pi) xl
11-1
2. Hook ......................... (P2) x2
3. Socket
...................... (P3)
x4
1.
Hook . . . . . . . . . . . . . . . . . . . . . . . . . fQ1) x2 1
11-2
1
/ 2. Hook ..____......_............ iQ2j x3
Note 1: How to open the changer manually. (Fig. 9-3)
I
1. In this state, turn fully the lock lever in the arrow direction through
the hole on the loading chaissis bottom.
2. While holding the lock lever, rotate the cam gear anticlockwise until the
cam gear rib engages with the clamp lever. (Fig. 10-l)
3. After that, push forward the slide Chaissis.
PROCEDURE FIGURI
1. Screw ....................... (Al) x4
9-l
1. Screw .......................
(Bl) x8
9-l
Top Cabinet
I
03 x 1Omm
R’ear
Panel
Figure 9-1
CD Tray Cover
Transformer
-
-
03xlOmm
Figure 9-2
Figure 9-3
Note 2:
1. After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the front end
of the connector so as to protect the optical pickup from electro-
static damage.
Note 3:
1. Be careful not to break the claw of the CD mechanism.
2. When fining back the cam gear assembly, let it lock by front
movement.
-9-

CD--M4000W/CP-M4000
Clamp Lever
CD Player Unit
(Top View)
Cam Gear Rib
Figure 10-l
(E3) x1-y b
Figure 1 O-2
(Push iPush 1
Figure 1 O-3
w
Figure 1 O-4
urntable
Figure 10-5
(Nl) x 3
Figure 10-6

CD-M4000W/CP-M4000
Figure 1 l-l
Net . . . . . . . . . . . . . . . . . . . . . . .
2. Catching Holder . . . . . (A2) x4
3 Woofer 1. Screw ..................... (Cl) x4 1 l-5
4
Tweeter 1. Screw .....................
(Dl) x4
11-5
5
Midrange 1. Screw ..................... (El) x4
11-5
Mechanism
Figure 11-2
Front Panel,
&moxAss!
3.
Screw ..................... (A3) x4
2
Super Tweeter 1. Screw ..................... (Bl) x2
11-5
Figure 11-4
Figure 11-3
Sneaker Box Ass’y
Figure l-l-5
--ll-

CD-M4000W/CP-M4000
REMOVING AND REINSTALLING
.THE MAIN
TART;S
TAPE 2
TAPE MECHANISM SECTION
Perform steps 1 to 7 and 9 of the disassembly method to
remove the tape mechanism.
How to remove the record/playback and erase
heads (TAPE 2) (See Fig. 12-I)
1. When you remove the screws (Al) x2 PCS., the recording/
playback head and three-dimensional head of the erasing
head can be removed.
How to remove the playback head (TAPE 1)
(See Fig. 12-2)
1. When you remove the screws (Bi) x2 PCS., the playback
head.
Erase Head
How to remove the pinch roller (TAPE l/2)
(See Fig. 12-3)
1. Carefully bend the pinch roller paw1 in the direction of the
arrow <AZ, and remove the pinch roller (Cl) x 1 PC., in the
direction of the arrow cB>.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
How to remove the belt (TAPE 2)
(See Fig. 12-4)
1. Remove the main belt (Dl) x1 PC., from the motor side
2. Remove the FF/REW belt (D2) x1 pc.
How to remove the belt (TAPE 1)
(See Fig. 12-4)
1. Remove the main belt (El) x 1 PC., from the motor side.
2. Remove the FF/REW belt (E2) x 1 pc.
How to remove the motor (See Fig. 12-5)
1. Remove the screws (Fl) x2 PCS., to remove the
Tape
motor.
ti2 x 6mm
Figure 12-l
1 TAPE 1 /
(Bl) x 1
02x9m
Figure 12-2
h
Pinch
KY
Figure 12-3
/z---l
T
/
n \ Main Belt
Flvwheel
v 1%
Flywheel
FFlREW
Ass’y
Roller
Figure 12-4
-
Figure 12-5
-12-

CD MECHANISM SECTION
Perform steps 1, 2, 3, 12, 13, 14
and 15 of the disassembly
method to remove the CD mechanism.
How to remove the CD loading motor
(See Fig. 13-1)
1. Bend the hooks (Al) x5 PCS., to remove the CD loading
motor.
2. Remove the drive belt (A2) x 1 pc.
How to remove the pickup (See Fig. 13-2)
1. Remove the stop washer (Bl) x1 PC., to remove the gear
(B2) x1 pc.
2. Remove the screws (B3) x2 PCS., to remove the shaft (84).
3. Remove the pickup.
Note
After removing the connector for the optical pickup from the
connector wrap the conductive aluminium foil around the front
end of connector so as to protect the optical pickup from
electrostatic damage.
CD-M4000W/CP-M4000
CD Loading Motor
Figure 13-1
(B4) x 1
Gear
(B2) x 1
Figure 13-2
ADJUSTMENT
MECHANISM SECTION
l Tape Speed
l Driving Force Check
Torque Meter
Play: TW-2111
Specified Value
Tape 1: Over 80 g
Tape 2: Over 80 g
l Torque Check
Test Tape
Adjusting Specified Instrument
Point Value Connection
Normal MTT-111 Variable
3,000 k 30 Hz Speaker i
speed Resistor in terminal
motor. (Load
resistance:
6 ohms)
/ TAPE MECHANISM 1
, ,
Figure 13-3
-13

CD-M4000W/CP-M4000
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
l AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency Frequency Setting/ Instrument
Display Adjusting Connection
Parts
AM IF 450 kHz
1,602 kHz T351
‘1
AM Band -
531 kHz (fL): T306
l 2
Coverage
1.1 F 0.i v
AM Tracking 990 kHz
990 kHz (fL): T303 *l
*l . Input: Antenna Output: TP302
*2. Input: Antenna
Output: TP301
so301
CNP301
FMANTENNA AM LOOP
TERMINAL ANTENNA
1 MAIN PWB j
jl
\
[ IC301 I I
L+ R357
Figure 14-1 ADJUSTMENT POINTS
CD SECTION
l Adjustment
Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacing the pickup. Therefore, different PWBs and pickups
can be combined freely.
Each time a disc is changed, these adjustments are
performed automatically. Therefore, playback of each disc
can be performed under optimum conditions.
Items adjusted automatically
(1) Offset adjustment (The offset voltage between the head
amplifier output and the VREF reference voltage is
compensated inside the IC.)
* Focus offset adjustment
* Tracking offset adjustment
(2) Tracking balance adjustment (waveform drawing
Fig.14-2 EFBL)
(3) Gain adjustment (The gain is compensated inside the IC
so that the loop gain at the gain crossover frequency will
be 0 dB.)
* Focus gain adjustment
’ Tracking gain adjustment
. FM RF
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Test Stage Frequency Frequency Setting/ Instrument
Display
Adjusting Connection
Point
FM Band -
87.50 MHz T301 (fL):
‘1
Coverage 1.3 V i 50 mV
FM RF 98.00 MHz 98.00 MHz L312 l 2
(1 O-30 dB)
*I. Input: Antenna
Output: TP301
*2. Input: Antenna Output: Speaker terminal
l FMIF
Signal generator: 10.7 MHz, FN
ITest Staae / Freauencv / Freauenc
I modulated
- 1 D&play-
, , ^‘;”
*I. Input: Antenna
Output: TP301
14-

TEST M,ODE
CD-M4000W/CP-M4000
l Setting the test mode
Any one of test mode can be set by pressing several keys as follows.
<X-BASS> + <CD> + <POWER> TEST:CD operation test
Function:-CD test mode.
-Enter test mode.
’
IL isn’t done
OPEN/CLOSE operation is using manual.
c~~77, ccc+> buttons’ make pick’s slide possible.
<<PLAY>> key input.
Do TOC IL. Do normal play
When these following key is input
into PLAY key, track number can
<<MEMORY>>
key input
be appoint directly
Adjustment result
automatically will
display as below
for each 2 set :
a) “FOF-XXXX”
b) “TOF-XXXX”
c) “TBA-XXXX”
d) “TGA-XXXX”
f) “FGA-XxXx”
g) “RFL-XXXX”
<<@ 177 key: Track 4
<<@2>7 key: Track 9
<<@3>> key: Track 15
explanation:
a) Focus off set =“FOF XXXX”
I
b) Tracking off set =“TOF;XXXX”
c) Tracking balance =“TBA-XXXX”
d) Tracking Gain =“TGA-XXXX”
f) Focus Gain =“FGA-XXXX”
g) RF level shift =“RFL-XXXX”
VOL - Last memory
BAL - CENTER
P.GEQ - FLAT
X-BASS - OFF
To cancel : Power OFF
I
+
Laser ON.
<<MEMORY>> key input.
Tracking OFF play at that
specific point.
6
<<MEMORY>> key input.
<<MEMORY>> key input.
I
t
1 Adjustment result automaticallywill
display as below for each 2 set :
a) “FOF-XxXx”
b) “TOF-XXXX”
c) “TBA-XXXX”
d) “TGA-XxXx”
f) “FGA-XXXX”
g) “RFL-XXXX”
3
/ <<STOP: key input. /
(STOP)
Sliding the PICKUP with
<<DD>>, <cc+> button
must only be in STOP mode.
-15-

CDh/l4000W/CP-M4000
Standard Specification of Stereo System Error Message Display Contents
Error Contents Display
Output while Device Protection Operation ‘PROTECT
TAPE Mechanism Error ‘E R-TA**’
CDIVCD Pickup Mechanism Error ‘ER-CD**’
CD Changer Mechanism Error ‘ER-CD**’
Tray Error
‘ER-CD**’
Micon Communication Error
‘ER-CD**’
Focus Not Match
‘NO DISC’
IL Time Over
‘NOT READ’
TUN PLL Unlock ‘ER-TU**’
Notes
00: While in Protect Circuit Operate
01: Over Current Detection
02: DC Detection
03:
00: Tape Mechanism Error
01: Initial Error
02:
03:
00: Pickup Mechanism Error
01: PU-IN SW Detection NG
02:
03:
10: Changer Error
11: Initial Error .~
12:
13:
20: Tray Error
21:
22:
23:
30: System-VCD
31: System-CD Servo
00: TUN Error
01: PLL Unlock
I
02:
03:
-16-

CD-M4000W/CP-M4000
TO DISPLAY SECTION
c
-
61 CE
62 CL
63 DI
64 DO
65 wmo
6 VRES
6 DRF
ICI
LC78645E
CD SERVO
CONSTANT
VOLTAGE
SW4
PICKUF
IN
Figure 17 BLOCK DIAGRAM (i/3)
-17-

AM LOOP
ANTENNA
vr,
x352 I I I rm-
4.5MHZ
JKl
ICKl
I - - I I I
M65656SP
MIC AMP.
+B4
f-
JK601
VIDEO/AUX
IC601
P-7CO”,
CNSll
KIR
FROM CD
SERVOSIS~TION
WI L-CH es
F&BACK R-CH &
SWITCt REC,
MOTOR
DRIVER
BIAS
Figure 18 BLOCK DIAGRAM (2/3)
-18-

CD-M4000W/CP-M4000
FL701
FLDISPLAY
JOG701
RX701
II II
- y--
-I
+B5
-
SW701 -SW703
sw709-SW717
SW722-SW734
IC701 (l/2)
IXO46OAW
I I
_ _ _.
SYSTEM MICROCOMPUTER -“--El‘ 1 / I ‘“&
+B5 ’
4.1943 MHz
SP. DET.
1 Q901.Q9iq
-
2OdB
ATT
IC
!B
7
‘605
‘606
g
SP RELAY
ON-OFF
1
so901
SPEAKER
TERMINAL
T601
POWER TRANSFORMER
RECIPLAY
F607
+-
T2A L 250V I
A
SW801
VOLTAGE
SELECTOR ,
VFl
TliJ2
-VF
AC POWER
SUPPLY CORD
AC 1 I Oil 27/220/
230-240 V, 50/60 Hz
BIAS
Figure 19 BLOCK DIAGRAM (3/3)
-19-

CD-M4000W/CP-M4000
PICKUP-UNIT-z--l
.---e---w
CD SER”O PWB-C r-----~----~--.
C
~
m
2
d
Y
1
2
i
J
3
^ ._
L
4
5
I 11
1
6
7
6
t
Cl
L--------I
I I III’
E
1111 I
I,/ /
PUIN
GND
I
Y--
NP3
F
I...Fk=L-w
I
I I//
L
G
I
)) CD SIGNAL
E
]VCC
I
VREF
1
E *“1
EC
LASER
DRIVER
-
I
H
l NOTES ON SCHEMATIC DIAGRAM can be found on page 39.
1
23
j
4
1
5
6
J
Figure 20 SCHEMATIC DIAGRAM (l/10)
-2o-