Sony HCD-VZ30AV User manual

HCD-VZ30AV
E Model
Chinese Model
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
Ver 1.2 2002. 06
Dolbynoisereduction manufacturedunder licensefrom
Dolby Laboratories Licensing Corporation.
“DOLBY”andthedouble-Dsymbol;are trade-marks
of Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM53F-K2BD37A
Section Base Unit Name BU-K2BD37A
Optical Pick-up Name KSM-213DAP
Tape deck Model Name Using Similar Mechanism HCD-ZX30AV
Section Tape Transport Mechanism Type TCM-230AWR12
•Thissetis the Amplifier,CD player,TapeDeck
and Tuner section in MHC-VZ30AV.
— Continued on next page —
SPECIFICATIONS
Inputs
VIDEO (AUDIO) IN: voltage 250 mV,
(phono jacks) impedance 47 kilohms
MD IN: voltage 450 mV,
(phono jacks) impedance 47 kilohms
DVD INPUT:
FRONT IN: voltage 450 mV,
(phono jacks) impedance 47 kilohms
REAR IN: voltage 450 mV,
(phono jacks) impedance 47 kilohms
CENTER IN: voltage 450 mV,
(phono jacks) impedance 47 kilohms
WOOFER IN: voltage 450 mV,
(phono jacks) impedance 47 kilohms
MIC 1/2 Sensitivity 1 mV,
(mini jack) impedance 10 kilohms
Outputs
MD OUT: voltage 250 mV
(phono jacks) impedance 1 kilohms
VIDEO OUT: max. output level
(phono jack) 1Vp-p, unbalanced,
Sync negative, load impedance
75 ohms
S-VIDEO OUT: Y: 1Vp-p, unbalanced,
(4-pin/mini-DIN jack) Sync negative,
C: 0.286Vp-p,
load impedance 75 ohms
PHONES: accepts headphones of
(stereo mini jack) 8 ohms or more
FRONT SPEAKER: accepts impedance of 8 to 16 ohms
REAR SPEAKER: accepts impedance of 8 to 16 ohms
CENTER SPEAKER: accepts impedance of 8 to 16 ohms
SUPER WOOFER: Voltage 1 V, impedance 1 kilohms
Amplifier section
The following measured at AC 120/220/240 V,
50/60 Hz
Front Speaker:
DIN power output (rated) 95 + 95 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
120 + 120 watts
(8 ohms at 1 kHz,
10% THD)
Center Speaker:
DIN power output (rated) 30 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
40 watts
(8 ohms at 1 kHz,
10% THD)
Rear Speaker:
DIN power output (rated) 30 + 30 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
40 + 40 watts
(8 ohms at 1 kHz,
10% THD)
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-929-279-13
2002F1600-1
© 2002.06
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SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE WITH
MARK 0ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
VIDEO CD/CD player section
System Compact disc and digital audio
system
Laser Semiconductor laser
(λ=780nm)
Emission duration: continuous
Laser output Max. 44.6
µ W*
*This output is the value measured
at a distance of 200 mm from the
objective lens surface on the
Optical Pick-up Block with 7 mm
aperture.
Wavelength 780 — 790 nm
Frequency response 2 Hz — 20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Video color system format
NTSC, PAL
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength 660 nm
Output Level —18 dBm
Tape player section
Recording system 4-track 2-channel stereo
Frequency response 40 — 13,000 Hz (±3 dB),
(DOLBY NR OFF) using Sony TYPE I cassette
40 — 14,000 Hz (±3 dB),
using Sony TYPE II cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 — 108.0 MHz (50 kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Middle Eastern model: 531 — 1,602 kHz
(with the interval set at
9 kHz)
Other models: 531 — 1,602 kHz
(with the interval set at
9 kHz)
530 — 1,710 kHz
(with the interval set at
10 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
Thai and Chinese models: 220 V AC, 50/60 Hz
Other models: 120 V, 220 V or
230 — 240 V AC, 50/60 Hz
Adjustable with voltage selector
Power consumption 250 watts
Dimensions (w/h/d) Approx. 250 x 375 x 395 mm
Mass Approx. 13.2 kg
Supplied accessories: AM loop antenna (1)
FM lead antenna (1)
Remote Commander (1)
Batteries (2)
Video cable (1)
Speaker cords (5)
Front speaker pads (8)
Design and specifications are subject to change
without notice.
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TABLE OF CONTENTS
MODEL IDENTIFICATION
— BACK PANEL —
Parts No.
•Abbreviation
EA : Saudi Arabia model.
SP : Singapore model.
MY : Malaysia model.
TH : Thai model.
HK : Hong Kong model.
CH : Chinese model.
PARTS No.
4-227-555-0s
4-227-555-1s
4-227-555-2s
4-227-555-3s
4-227-555-4s
MODEL
EA
MY, SP
HK
TH
CH
1. GENERAL ·········································································· 5
2. DISASSEMBLY ································································ 8
3. SERVICE MODE ···························································· 16
4. MECHANICAL ADJUSTMENTS ····························· 19
5. ELECTRICAL ADJUSTMENTS ······························· 19
6. DIAGRAMS
6-1. Circuit Boards Location ·············································· 24
6-2. Block Diagrams ··························································· 25
6-3. Schematic Diagram Video CD Section (1/2) ·········· 29
6-4. Schematic Diagram Video CD Section (2/2) ·········· 30
6-5. Printed Wiring Board Video CD Section ················ 31
6-6. Printed Wiring Board BD Board ···························· 32
6-7. Schematic Diagram BD Board ······························· 33
6-8. Printed Wiring Boards Sensor/Motor Section ········ 34
6-9. Schematic Diagram Sensor/Motor Section ············ 35
6-10. Printed Wiring Board Audio Board ························ 36
6-11. Schematic Diagram Audio Board ·························· 37
6-12. Printed Wiring Board Leaf SW Board ··················· 38
6-13. Schematic Diagram Leaf SW Board ······················ 38
6-14. Printed Wiring Board Main Board ························· 39
6-15. Schematic Diagram Main Board (1/2) ··················· 40
6-16. Schematic Diagram Main Board (2/2) ··················· 41
6-17. Printed Wiring Board Panel Board ························· 42
6-18. Schematic Diagram Panel Board ···························· 43
6-19. Printed Wiring Board Sub Panel Board ·················· 44
6-20. Schematic Diagram Sub Panel Board ···················· 45
6-21. Waveforms ··································································· 46
6-22. Printed Wiring Board Mic Board ··························· 46
6-23. Schematic Diagram Mic Board ······························ 47
6-24. Printed Wiring Board Front AMP Board ················ 48
6-25. Schematic Diagram Front AMP Board ·················· 49
6-26. Printed Wiring Board Surround AMP Board ········· 50
6-27. Schematic Diagram Surround AMP Board ············ 51
6-28. Printed Wiring Boards Trans Board ······················· 52
6-29. Schematic Diagram Trans Board ···························· 53
6-30. IC Block Diagrams ······················································ 54
6-31. IC Pin Function Description ········································ 56
8. EXPLODED VIEWS ................................................... 61
9. ELECTRICAL PARTS LIST ................................... 68
1. Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
and bridges.
2. Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
4. Look for parts which, through functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety
checks before releasing the set to the customer.
5. Check the B+ voltage to see it is at the values specified.
6. Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
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This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The following caution label is located inside the unit.
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
SERVICE POSITION
• FRONT PANEL SECTION
• CD MECHANISM BLOCK
CN503
CN701
Jig (J-2501-076-A)
Jig
(J-2501-165-A)
Jig (J-2501-167-A) Jig (J-2501-050-A
)
CN521
CN522
CN523
Ver 1.2 2002. 06
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SECTION 1
GENERAL
LOCATION OF CONTROLS
–Front Panel –
1bbutton and indicator (TAPE A)
2Bbutton and indicator (TAPE A)
3bbutton and indicator (TAPE B)
4Bbutton and indicator (TAPE B)
5xbutton
6uCD button and indicator
7TUNER/BAND button
8SET UP MODE indicator
9SOUND indicator
q; DSP button
qa V-GROOVE button
qs MODE SELECT button
qd PUSH ENTER button
qf Mbutton (TUNER)
qg mbutton (TUNER)
qh VOLUME knob
qj PRO LOGIC button and indicator
qk GROOVE button and indicator
ql GROOVE-EX button and indicator
w; DVD 5.1 CH button and indicator
wa DISC 1 button and indicator
ws DISC 2 button and indicator
wd DISC 3 button and indicator
wf DISC 4 button and indicator
wg DISC 5 button and indicator
wh Zindicator (DISC 5)
wj Zindicator (DISC 4)
wk Zindicator (DISC 3)
wl Zindicator (DISC 2)
e; Zindicator (DISC 1)
ea DISC 5 button
es DISC 4 button
ed DISC 3 button
ef DISC 2 button
eg DISC 1 button
eh MIC 2 jack
ej MIC 1 jack
ek MIC VOL land
el ECHO VOL land
r; ZB button
12 34 5 6 7 89
q;
qa
qs
qd
qf
qg
qh
qj
qk
ql
w;
wa
ws
wd
wf
wg
whwjwkwle;eaesedefeg
r;
ra
rs
rd
rg
rh
rl
ta
ts
td
tf
tg
eh
ej
ek
el
rf
t;
rk
rj
ra ZA button
rs REC PAUSE/START button and indicator
rd CD SYNC button
rf HI-DUB button
rg PHONE jack
rh PREVIOUS button
rj NEXT button
rk RETURN button
rl ENTER button
t; >button
ta .button
ts FUNCTION button
td DISPLAY button
tf TIMER SELECT indicator
tg ?/1 button and indicator
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– Rear Panel –
1AM ANTENNA terminals
2FM ANTENNA (75 Ω) terminals
3VIDEO IN jacks
4MD IN jacks
5MD OUT jacks
6DVD IN jacks
7WOOFER OUT jacks
8CD DIGITAL OUT connector
9FRONT SPEAKER terminals
q; REAR SPEAKER terminals
qa CENTER SPEAKER terminals
qs VOLTAGE SELECTOR switch
qs
12
3
4
5
6
7
8
9q;qa
Photo : Malaysia model
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This section is extracted
from instruction manual.
10
Step 3: Setting the time
You must set the time before using the timer
functions.
The clock is on a 12-hour system.
1Press MODE SELECT when the system
is turned off.
“Clock Set ?”appears.
2Press PUSH ENTER.
The hour indication flashes.
3Move the multi stick toward vor V
repeatedly to set the hour.
4Move the multi stick toward B.
The minute indication flashes.
5Move the multi stick toward vor V
repeatedly to set the minute.
6Press PUSH ENTER.
To cancel the menu operation
Press MODE SELECT.
Tips
•Refer to the illustration to use the multi stick. Place
your finger on the center of the multi stick and
move in the direction you want (up/down or left/
right shown v/V or b/B in this manual).
PUSH
ENTER
•If you’ve made a mistake, start over from step 1.
?/1
(Power) 12,3,4,5,6
Up (v)
Right (B)
Left (b)
Down (V)
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SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
2-1. UPPER CASE
2-2. FRONT PANEL SECTION
1Four screws
(CASE3 TP2)
2Four screws
(CASE3 TP2)
3Five screws
(BVTT 3 ×8)
4Upper case
7Screw
(P 3 ×8)
3Wire (flat type)
(11 core)
2Wire (flat type)
(15 core)
4Wire (flat type)
(17 core)
8Three screws
(BVTT 3 ×6)
1Connector
5Connector
6Connector
9 front panel
section
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2-3. BACK PANEL SECTION
2-4. MAIN BOARD
3Nineteen screw
s
(BVTP 3 × 8)
4Remove the back panel
to direction of the arrow.
2 Connector
1Wire (flat type)
(13 core)
6Remove the MAI
N
board to direction
of the arrow.
5Two screws
(BVTP 3 × 8)
3Wire (flat type) (17 core)
4Wire (flat type) (13 core)
1One connector
2One connector
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2-6. FRONT AMP BOARD
2-5. POWER TRANSFORMER (T902)
5Four screws
(BVTT 4 × 6)
6Power transforme (T902
)
1Connector
2Connector
3Connector
4Power cord
0Heat sink
4Bracket
8Front amp board
5Surrund amp board
6Two screws
(BVTP 3 × 8)
2Two screws
(BVTP 3 × 8)
7Two screws
(BVTP 3 × 16)
3Two screws
(BVTP 3 × 16)
9Two screws
(BVTP 3 × 8)
1Connector
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2-7. CD MECHANISM DECK (CDM53F-K2BD37A)
2-8. TAPE MECHANISM DECK (TCM-230AWR12)
3Chassis
2Two screws
(BVTP 3 × 8)
1Three screws
(BVTP 3 × 8)
4Four screws
(BVTP 3 × 8)
5Remove the CD mechanism
deck section.
2Two screws
(BVTP 3 ×8
)
1Two screws
(BVTP 3 ×8)
3Remove the tape mechanism
deck section.
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2-9. CD BASE UNIT (BU-K2BD37A)
2-10. FITTING BASE (GUIDE) ASSY, BRACKET (CHASSIS) AND MAGNET ASSY
5CD base unit
(BU-K2BD38)
2Compression spring
(sliver)
1Two screws
(PTPWH M2.6)
3Two screws
(PTPWH M2.6)
4Compression spring
(black)
8Four screws
(BVTP M2.6)
2Four screws
(BVTP M2.6)
6Bracket
(chassis)
5Screw
(BVTP M2.6)
4Screw
(BVTP M2.6) 7Connector
(CN710)
1Two connectors
(CN709, 715)
3Fitting base
(guide) assy
9Magnet ass
y
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13
A
B
Pully (LD)
Stocker section
Tray (sub)
Slider (selection)
Pully (mode)
5Stocker
section
4Two step
screws
4Two step screws 3Gear (eject)
2Chassis (mold B) section
9Compression
spring
7Slider (selection)
8Washer
6Two screws
(PTPWH M2.6)
1Three screws
(BVTP M2.6)
Pully (LD)
Note: Rotating the pully (LD),
shift the slider (selection)
to the left.
2-11. TRAY (SUB)
1 Rotating the pulley (LD), shift the slider (selection) in the arrow A direction.
2 Rotating the pulley (mode) in the arrow direction, adjust the tray (sub) to be removed.
3 Rotating the pulley (LD), shift the slider (selection) in the arrow B direction.
4 Rotating the pulley (mode) in the arrow direction, remove the tray (sub) to be removed.
2-12. CHASSIS (MOLD B) SECTION, STOCKER SECTION AND SLIDER (SELECTION)
Note: In mounting the parts, refer to page 14 and 15.
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14
2-13. GEARS INSTALLATION
2-14. SLIDER (SELECTION) INSTALLATION
1Slide the slider (u/d)
fully in the arrow
direction.
3Gear (gear B)
2
Gear (U/D slider)
4 Gear (gear A)
Portion A
Adjust the gear (gear B) with the
portion A as shown.
Slider (U/D) gear
Adjust the gear so that it meshes with
the bottom tooth of slider (U/D) gear,
as shown.
Gear
(gear B) Linearly
Adjust so as to be aligned with
gear B linearly, as shown.
2 Gear (chuking)
6 Two screws
(PTPWH M2.6)
5 Washer
3 Convex portion of
slider (selection)
4 Compression spring
7 Insert the slider (selection)
into the portion A.
1 Rotary encoder
Rotary encoder
Align with the slot of
rotary encoder.
Align marking
Portion A
Gear (chuking)
Insert a convex portion into
a groove of gear (chuking).
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15
2-15. STOCKER SECTION INSTALLATION
2-16. CHASSIS (MOLD B) SECTION INSTALLATION
3Three screws
(BVTP M2.6)
2
Insert the gear (eject0
under the gear (LD
deceleration).
1 Insert the portion A of
chassis (mold B) section
into the portion B of
slider (selection).
Gear (LD deceleration)
Portion A
Portion B of
slider (selection)
2 Portion A of tray (sub)
1 Stocker section
3 Two step screws
3 Two step screws
Hook the portion A of tray (sub)
to the slider (selection).
Portion A
of tray (sub)
Sticking of
slider (selection)
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16
SECTION 3
SERVICE MODE
[MC Cold Reset]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press three buttons x, DISPLAY , and DISC 5 simultaneously.
2. The fluorescent indicator tube displays “COLD RESET” and
the set is reset.
[CD Ship Mode]
• This mode moves the pickup to the position durable to vibra-
tion. Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press ?/1button to turn the set ON.
2. Press V-GROOVE button, and ?/1button simultaneously.
3. After the "STANDBY" display blinks six times, a message
“LOCK” is displayed on the fluorescent indicator tube, and the
CD ship mode is set.
[MC Hot Reset]
• This mode resets the set with the preset data kept stored in the
memory. The hot reset mode functions same as if the power
cord is plugged in and out.
Procedure:
1. Press three buttons x , DISPLAY , and DISC 1 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[CD Service Mode]
• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.
Procedure:
1. Press ?/1button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons x, DISPLAY , and Z3 simultaneously.
4. The CD service mode is selected.
5. With the CD in stop status, turn the shuttle knob clockwise to
move the pickup to outside track, or turn the shuttle knob
counter-clockwise to inside track.
6. To exit from this mode, perform as follows:
1) Move the pickup to the most inside track.
2) Press three buttons in the same manner as step 2.
Note: • Always move the pickup to most inside track when exiting from
this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can be
chipped.
[VACS ON/OFF Mode]
• This mode is used to switch ON and OFF the VACS (Variable
Attenuation Control System).
Procedure:
Press the ENTER and xbuttons simultaneously. The message
“VACS OFF” or “VACS ON” appears.
[Change-over of AM Tuner Step between 9 kHz and
10 kHz]
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press ?/1button to turn the set ON.
2. Select the function “TUNER”, and press TUNER/BAND
button to select the BAND “AM”.
3. Press ?/1button to turn the set OFF.
4. Press MODE SELECT and ?/1buttons simultaneously, and
the display of fluorescent indicator tube changes to “AM 9 k
STEP” or “AM 10 k STEP”, and thus the channel step is changed
over.
[GC Test Mode]
• This mode is used to check the software version, FL tube, LED,
keyboard and VACS.
Procedure:
1. Press three buttons x, ENTER , and DISC 2 simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When you want to enter the software version display mode,
press DISC 1 . The model number and destination are displayed.
4. Each time DISC 1 is pressed, the display changes starting
from MC version, GC version, VC version, CD version, CM
version, ST version, TC version, TA version, TM version and
BR version in this order, and returns to the model number and
destination display.
5. When DISC 3 is pressed while the version numbers are being
displayed except model number and destination, year, month
and day of the software creation appear. When DISC 3 is
pressed again, the display returns to the software version display.
When DISC 1 is pressed while year, month and day of the
software creation are being displayed, the year, month and day
of creation of the software versions are displayed in the same
order of version display.
6. Press DISC 2 button, and the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays
“KEY0VOL0”. Each time a button is pressed, “KEY” value
increases. However, once a button is pressed, it is no longer
taken into account.
“VOL” value increases like 1, 2, 3 ... if rotating VOLUME
knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in
“–” direction.
8. Flopping the PUSH ENTRY button to the up position shows
the indication “ R”, the down position shows “ r”, the left
position shows “ T” and the right position “ t”.
9. Also when DISC 3 is pressed after lighting of all LEDs and FL
tubes, value of VACS appears.
10. To exit from this mode, press three buttons in the same manner
as step 1, or disconnect the power cord.
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17
[MC Test Mode]
• This mode is used to check operations of the respective sections
of Amplifier, Tuner, CD and Tape.
Procedure:
1. Press the three buttons of x, DISPLAY and DISC 3
simultaneously.
2. A message “TEST MODE” appears on the FL display tube.
3. When PUSH ENTRY (CURSOR UP) button is pressed, GEQ
increases to its maximum and a message “GEQ MAX” appears.
4. When PUSH ENTRY (CURSOR DOWN) button is pressed,
GEQ decreases to its minimum and a message “GEQ MIN”
appears.
5. When PUSH ENTRY (CURSOR LEFT) or PUSH ENTRY
(CURSOR RIGHT) button is pressed, GEQ is set to flat and a
message “GEQ FLAT” appears.
6. When the VOLUME control knob is turned clockwise even
slightly, the sound volume increases to its maximum and a
message “VOLUME MAX” appears for two seconds, then the
display returns to the original display.
7. When the VOLUME control knob is turned counter-clockwise
even slightly, the sound volume decreases to its minimum and
a message “VOLUME MIN” appears for two seconds, then
the display returns to the original display.
8. In the test mode, the default-preset channel is called even when
the TUNER is selected and an attempt is made to call the preset
channel that has been stored in memory, by operating the Shuttle
knob. (It means that the memory is cleared.)
9. When CD is selected. Press the MODE SELECT button and
press the ENTER button in the “Setup Mode”. Move the
PUSH ENTRY to the right or left and press the ENTER button
in the “CD Edit Start” mode.
The disc that is being chucked at this moment becomes the
default setting. It means that the default disc only is accessed
when any other discs are selected even though the display
indication changes accordingly. At the same time, the DISC 1
button to DISC 5 button cannot be accepted. (It means that
the tray motor and the turntable motor are disabled of their
operation.)
10. When a tape is inserted in Deck B and recording is started, the
input source function selects VIDEO automatically.
11. When xbutton is pressed to stop recording, the Tape (Deck)
B is selected and tape is rewound using the mbutton, tape
is rewound, tape is stops at around the record-starting position
and playback of the recorded portion of the tape is started. If
PAUSE is inserted even once during recording, tape is rewound
to the position around the PAUSE position and is played back.
12. When the HI-DUB Button is press during playback of Deck
B, either normal speed or high speed can be selected by this
button.
13. Select the desired loop as follows. Press the MODE SELECT
button and press the ENTER button in the “Setup Mode”.
Move the PUSH ENTRY button to the right or left and press
the ENTER button in the “Direction setup”. Move the PUSH
ENTRY button to the right or left and press ENTER at
“Cycle”. Insert a test tape AMS-110A or AMS-RO to Deck A.
14. Press the CD SYNC button to enter the AMS test mode.
15. After a tape is rewound first, the FF AMS is checked, and the
mechanism is shut off after detecting the AMS signal twice.
16. Then the REW AMS is checked and the mechanism is shut off
after detecting the AMS signal twice.
17. When the check is complete, a message of either OK or NG
appears.
18. When you want to exit this mode, press the ?/1button twice.
The cold reset is enforced at the same time.
[Aging Mode]
During the aging mode, both the CD player and tape deck are
executed together.
• If an error occurs:
Aging stops, and the error state is displayed on the fluorescent
display tube.
• If no error occurs:
Aging is repeated.
Procedure:
1. Press the ?/1 button to turn the set ON.
2. Load 10 minute tapes with unbent rec-proof tabs in decks A
and B.
3. Set CD on the DISC 1 table.
4. Set the CD mode REPEAT to OFF and PLAY MODE to ALL
DISCS.
(Press the MODE SELECT button and move the PUSH
ENTRY button to set these modes.)
5. Press the FUNCTION button to switch the function to “CD”.
6. Press the three buttons x, DISPLAY , and DISC 4 button
simultaneously.
7. Aging starts.
8. To end aging, press the ?/1 button to turn the set OFF.
Aging Sequence:
Aging is performed in the following sequence.
• Tape Deck
1. The tape in deck A is rewound. “TAPE A AG-1” is displayed.
2. The FWD side of deck A is played for two minutes.
“TAPE A AG-2” is displayed.
3. The tape in deck A is fast forwarded. “TAPE A AG-3” is
displayed. Fast forward is carried out for 20 seconds or to the
tape end.
4. The RVS side of deck A is played for two minutes.
“TAPE A AG-4” is displayed.
5. The tape in deck A is rewound. “TAPE A AG-5” is displayed.
6. The FWD side of deck B is played for two minutes.
“TAPE B AG-2” is displayed.
7. The tape in deck B is fast forwarded. “TAPE B AG-3” is
displayed. Fast forward is carried out for 20 seconds or to the
tape end.
8. The RVS side of deck B is played for two minutes.
“TAPE B AG-4” is displayed.
9. The tape in deck B is rewound. “TAPE B AG-5” is displayed.
10. Repeated from step 2.
• CD
1. DISC 1 is chucked.
2. The TOC is read.
3. The first track is played for 3 seconds.
4. The last track is played for 3 seconds.
5. DISC 1 tray open and close.
6. Repeated from step 1.
• Display when ended abnormally
When the tape deck is abnormal:
The state when ended abnormally is displayed.
The contents of display are the same as that during aging.
When the CD player is abnormal:
A message indicating that errors such as “CD MEC ERR” have
occurred.
Check the error contents in the following error history display mode.
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18
[Error History Display Mode]
Mode which enables the history of error occurring in the CD player
to be checked.
Execute this mode after ending the aging mode.
Procedure:
1. Press the ?/1 button to turn the set ON.
2. Press the three buttons x, DISPLAY , and Z1
simultaneously.
3. Select the desired display mode from the following modes by
moving the PUSH ENTRY button to the right and left.
• Number of mechanism errors display mode
• Mechanism error display mode
• Number of times of NO DISC display mode
• NO DISC display mode
4. Press the ?/1 button to end and turn the set OFF.
5. To erase the error history, perform COLD reset.
(Press the three buttons x, DISPLAY , and DISC 5
simultaneously.
• Viewing the mechanical error history display
(Switch the history by moving the PUSH ENTRY up and down)
Display
CDM E@@D##$%!
@@ : Error number. 00 is the newest.
## : Mechanism error after initialization is complete.
$ : 1 or 2 : Mechanism error during the tray loading in between the
stocker position and the rear position behind the stocker
position.
% : 2 : Mechanism error during up and down movement of stocker.
! : 2 : Mechanism error of clamper and that during mode switching.
• Viewing the NO DISC ERROR history display
(Switch the history by moving the PUSH ENTRY up and down)
Display
No E@@D##$$%
@@ : Error number. 00 is the newest
## : Error contents
01 : Focus error
02 : GFS error
03 : Setup error
$$ : Retries
00 : NO DISC is determined without attempting chucking
retry
02 : NO DISC is determined after chucking retry.
% : State when determined as NO DISC
1 : When stopped
2 : At setup
3 : At TOC READ
4 : When accessing
5 : When playing
6 : When pausing
7 : When manual searching (during play)
8 : When manual searching (during pausing)
[VIDEO CD Color-bars Mode]
On this mode, the data of the color-bars signal as a picture signal
and the 1 kHz sine wave signal as a sound signal are output by the
mechanism controller (IC502) for the video CD signal check. When
measurement of the voltage and waveform on the VIDEO board,
perform it in this mode.
For reference, the color-bars signal can be observed at J302 (VIDEO
OUT) using an oscilloscope.
Procedure:
1. Short the both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press the FUNCTION button to select CD.
3. The color-bars appears when the CD is in stop status, and it
disappears when the CD goes in play status.
4. After measuring, remove the lead wire connected.VIDEO board
(SIDE B)
J301 J302
CN501
CN503
SL503
SL502
SL501
CHECK LED
CN502
VIDEO board (SIDE A)
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19
Precaution
1. Clean the following parts with a denatured alcohol-
moistened swab:
record/playback heads pinch rollers
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to
the parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
2. Turn the adjustment screw and check output peaks. If the
peaks do not match for L-CH and R-CH, turn the
adjustment screw so that outputs match within 1 dB of peak.
L-CH
peak
R-CH
peak
Screw
position
Output
level Within
1 dB
L-CH
peak
R-CH
peak
Screw
position
Within 1d
B
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
DECK SECTION 0 dB=0.775V
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to
the parts adjusted.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given
in this service manual. (As a general rule, playback circuit
adjustment should be completed before performing
recording circuit adjustment.)
6. The adjustments should be performed for both L-CH and
R-CH.
7. Switches and controls should be set as follows unless
otherwise specified.
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
Tape Signal Used for
P-4-A100
WS-48B
P-4-L300
10 kHz, –10 dB
3 kHz, 0 dB
315 Hz, 0 dB
Azimuth Adjustment
Tape Speed Adjustment
Level Adjustment
3.06 N • m to 6.96 N • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.19 N • m to 0.58 N • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
3.06 N • m to 6.96 N • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.19 N • m to 0.58 N • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
6.96 N • m to 14.02 N • m
71 to 143 g • cm
(0.98 – 1.99 oz • inch)
9.80 N • m
100 g or more
(3.53 oz or more)
9.80 N • m
100 g or more
(3.53 oz or more)
Mode Torque meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension
Set
MAIN board
CN301
Pin 3(R-CH)
Pin 1(L-CH)
MAIN board
CN301
Pin 2(GND)
+
–
Level mete
r
Test tape
P-4-A100
(10 kHz, –10 dB)
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20
4. After the adjustments, apply suitable locking compound to
the parts adjusted.
Adjustment Location: Playback Head (Deck A)
Record/Playback/Erase Head (Deck B)
3. Mode: Playback Tape Speed Adjustment (Deck A, Deck B)
Note: Set the test mode using the following method and begin tape
speed adjustment.
In the test mode, the speed will switch to double speed or
normal speed each time the HI-DUB button is pressed.
Procedure:
With the ?/1 button ON, press the xbutton, DISPLAY button,
and DISC 3 button simultaneously.
(The “VOLUME” on the fluorescent display tube will blink while
in the test mode.)
To exit the test mode, press the ?/1 button.
1. Insert the WS-48B into deck B.
2. Press the Hbutton of deck B.
3. Press the HI-DUB button and play the tape at double speed.
4. Adjust RV1001 of the LEAF SW board so that the reading
of the frequency counter becomes 6000 ± 180 Hz.
5. Press the HI-DUB button and play the tape at normal speed.
6. Adjust RV1002 of the LEAF SW board so that the reading
of the frequency counter becomes 3000 ± 90 Hz.
Adjustment Location: LEAF SW board
Sample Value of Wow and flutter
W.RMS (JIS) less than 0.3%
(test tape: WS-48B)
Playback Level Adjustment (Deck A, Deck B)
Procedure:
Mode: Playback
Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301
(L-CH) and RV401 (R-CH)
so that adjustment within the following adjustment level.
Adjustment level:
CN301 playback level: 301.5 to 338.3 mV (–8.2 to –7.2 dB)
level difference between the channels: within ± 0.5 dB
Adjustment Location: AUDIO board
Adjustment Location
[LEAF SW BOARD]
RV1002 RV1001
RV1002(Normal Speed)
RV1001(High Speed)
FowardReverse
MAIN
board
CN301
set
Test tape
P-4-A100
(10 kHz, –10 dB)
Pin 3
Oscilloscop
e
L-CH
R-CH
VH
Waveform of oscilloscope
In phase 45°90°135°180°
Good Wrong
Pin 2
Pin 1
L
R
+
–
Set
Test tape
P-4-L300
(315 Hz, 0 dB)
MAIN board
CN301 (Pin 1: L-CH)
(Pin 3: R-CH)
Level meter
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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