Sony HCD-V8900, HCD-V8900AV Service Manual
MICROFILM
HCD-V8900/V8900AV
SERVICE MANUAL
HCD-V8900/V8900AV is the tuner , deck, CD and
amplifier section in LBT-V8900AV/V8900S.
Photo : HCD-V8900AV
Model Name Using Similar Mechanism HCD-V4500
CD
SECTION
T APE
DECK
SECTION
CD Mechanism Type CDM37L-5BD21AL
Base Unit Type BU-5BD21AL
Optical Pick-up Type KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-V4500
T ape T r ansport Mechanism T ype TCM-220WR2
E Model
HCD-V8900/V8900AV
Chinese Model
HCD-V8900AV
SPECIFICATIONS
— Continued on next page —
COMPACT DISC DECK RECEIVER
– 1 –
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous r adiation exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of 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.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK ! OR DO TTED LINE
WITH MARK ! ON 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.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
– 2 –
MODEL IDENTIFICATION
— BACK PANEL —
MODEL
V8900AV: SP, MY
V8900AV: CH
V8900AV: IA
V8900
4-900-073-0π
4-900-073-1π
4-900-073-2π
4-900-073-3π
• Abbreviation
PARTS No.
SP : Singapore model
MY : Malaysia model
IA : Indonesian model
CH : Chinese model
TABLE OF CONTENTS
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE 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 pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output two times.
1. GENERAL ..........................................................................4
2. DISASSEMBLY
2-1. Front Panel ........................................................................... 5
2-2. Main Board ........................................................................... 6
2-3. Tape Mechanism Deck ..........................................................6
2-4. Cassette Lid Assembly.......................................................... 7
2-5. CD Lid Assembly.................................................................. 7
2-6. CD Mechanism Deck ............................................................ 8
2-7. Base Unit ..............................................................................8
2-8. Disc Table .............................................................................8
3. SERVICE MODE ..............................................................9
4. TEST MODE ..................................................................... 11
5. MECHANICAL ADJUSTMENTS ..........................12
6. ELECTRICAL ADJUSTMENTS ...............................12
7. DIAGRAMS
7-1. Circuit Boards Location ...................................................... 17
7-2. Block Diagrams
• KEY CON Section........................................................... 18
• CD Section ....................................................................... 19
• Video Section................................................................... 21
• Deck Section .................................................................... 23
• Main Section .................................................................... 25
• Power Section ..................................................................27
7-3. Printed Wiring Board – CD Section –................................. 31
7-4. Schematic Diagram – CD Section – ................................... 33
7-5. Printed Wiring Board – Video Section –............................. 35
7-6. Schematic Diagram – Video (1/4) Section –....................... 37
7-7. Schematic Diagram – Video (2/4) Section –....................... 39
7-8. Schematic Diagram – Video (3/4) Section –....................... 41
7-9. Schematic Diagram – Video (4/4) Section –....................... 43
7-10. Printed Wiring Board – Key Control Section – ................ 45
7-11. Schematic Diagram – Key Control Section –................... 46
7-12. Printed Wiring Board – Main Section – ........................... 47
7-13. Schematic Diagram – Main (1/5) Section – ..................... 49
7-14. Schematic Diagram – Main (2/5) Section – ..................... 51
7-15. Schematic Diagram – Main (3/5) Section – ..................... 53
7-16. Schematic Diagram – Main (4/5) Section – ..................... 55
7-17. Schematic Diagram – Main (5/5) Section – ..................... 57
7-18. Printed Wiring Board – Deck Section – ........................... 59
7-19. Schematic Diagram – Deck Section – .............................. 61
7-20. Printed Wiring Board – Power Section – ......................... 63
7-21. Schematic Diagram – Power Section – ............................ 65
7-22. Schematic Diagram – Panel Section – ............................. 67
7-23. Printed Wiring Board – Panel Section – ........................... 69
7-24. Printed Wiring Board – TC/CD Panel-1 Section –........... 71
7-25. Schematic Diagram – TC/CD Panel-1 Section – ............. 73
7-26. Schematic Diagram – HP/Mic Section –.......................... 75
7-27. Printed Wiring Board – HP/Mic Section – ....................... 77
7-28. Printed Wiring Board – CD Motor Section – ...................79
7-29. Schematic Diagram – CD Motor Section –...................... 81
7-30. Printed Wiring Board – Trans Section –........................... 83
7-31. Schematic Diagram – Trans Section – ............................. 85
7-32. Printed Wiring Board – Surround Section – ..................... 87
7-33. Schematic Diagram – Surround Section – ....................... 88
7-34. IC Block Diagrams ........................................................... 89
7-35. IC Pin Functions ............................................................... 96
8. EXPLODED VIEWS
8-1. Case and Back Panel Section............................................ 113
8-2. Front Panel Section-1........................................................ 114
8-3. Front Panel Section-2........................................................ 115
8-4. Chassis Section ................................................................. 116
8-5. TC Mechanism Section-1 (TCM-220WR2) ..................... 117
8-6. TC Mechanism Section-2 (TCM-220WR2) ..................... 118
8-7. TC Mechanism Section-3 (TCM-220WR2) ..................... 119
8-8. CD Mechanism Section (CDM37L-5BD21L).................. 120
8-9. Base Unit Section (BU-5BD21AL) .................................. 121
9. ELECTRICAL PARTS LIST ...................................... 122
– 3 –
SECTION 1
GENERAL
Front Panel
^¡^™^£^¢^∞
%¢%∞%§%¶
$¶
$§
&¡
&º
^ª
^•
^¶
^§
^º
%ª
%•
%£
%™
%¡
%º
$ª
$•
1 834 576
2
9
!º
!¡
!™
!£
!¢
!∞
!§
!¶
!•
!ª
@º
@¡
@™
@£
@¢
@∞
@§
@¶
@•
#¶
$º
$£
#•
$¡
$¢
#ª
$™
$∞
LOCATION OF PARTS AND CONTROLS
1 1/u (power) button
2 DISPLAY/DEMO button
3 SPECTRUM ANALYZER
button
4 Display Window
5 ENTER/NEXT button
6 TUNER MEMORY button
7 TUNING MODE button
8 TUNER/BAND button
9 TUNING (+/–) button
0 STEREO/MONO button
!¡ EFFECT button
!™ GROOVE button
!£ FUNCTION button
!¢ VOLUME control
!∞ SUPER WOOFER button
!§ GEQ control buttons
!¶ SUPER W MODE button
!• Deck B ª, · button
!ª Deck B p button
@º Deck B 0, ) button
@¡ Deck B r REC button
@™ Deck B P button
@£ CD SYNC button
@¢ H SPEED DUB button
@∞ Deck B 6 EJECT button
@§ CD · button
@¶ CD P button
@• CD p button
@ª REPEAT button
#º PLAY MODE button
#¡ ≠ AMS ± dial
#™ 1/ALL DISCS button
#£ EDIT button
#¢ CD 0, ) button
#∞ DISC SKIP button
#∞#§
#§ 6 OPEN button
#¶ FLASH button
#• AUTO PBC indicator
#ª NEXT button
$º LOOP button
$¡ PBC indicator
$™ PREV button
$£ NON-STOP button
$¢ VCD indicator
$∞ ˆ RETURN button
$§ DISC1-DISC5 buttons
$¶ Deck A 6 EJECT button
$• DOLBY NR button
$ª DIRECTION button
%º Deck A p button
%¡ Deck A 0, ) button
%™ Deck A ª, · button
%£ PHONES jack
– 4 –
#¢
@ª
#º
#¡#™#£
%¢ KARAOKE PON/MPX
button
%∞ KEY CONTROL ˜ button
%§ KEY CONTROL n button
%¶ ENTER button
%• ECHO LEVEL knob
%ª MIC jack
^º MIC LEVEL knob
^¡ WAVE button
^™ DSP button
^£ PROLOGIC button
^¢ P FILE MEMORY button
^∞ GEQ CONTROL button
^§ Equalizer indicators
^¶ SLEEP button
^• DAILY 2 button
^ª DAILY 1 button
&º t/CLOCK SET button
&¡ REC button
This section is extracted from
instruction manual.
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
2-1. FRONT PANEL
1
Three flat type wires
(CN401, CN402, CN701)
3
Front panel
– 5 –
2
Four screws (BVTP3x8)
2-2. MAIN BOARD
0
Connector
(CN9001)
9
Connector
(CN601)
4
Power cord
5
Back panel
3
Six screws (BVTP3x8)
2
Twelve screws
(BVTP3x8)
1
Flat type wire (CN851)
!£
MAIN board
6
Connector
(CN961)
7
Flat type wire
(CN801)
2-3. TAPE MECHANISM DECK
3
Three screws
(BVTP2.6x8)
A
!¡
4
Three screws (BVTP2.6x8)
5
Remove the tape mechanism deck
section to direction of the arrow
Two screws
(BVTP3x8)
!™
Connector
(CN901)
8
Connector
(CN830)
A
.
2
Open the cassette lids.
1
Push the two buttons.
– 6 –
2-4. CASSETTE LID ASSEMBLY
1
Two springs
4
Cassette lid assembly
3
Two bracket
2
Two screws (BVTP2.6x8)
2-5. CD LID ASSEMBLY
2
Connector (CN671)
1
Four screws (BVTP2.6x8)
4
CD lid assembly
3
Connector (CN661)
– 7 –
2-6. CD MECHANISM DECK
t
1
Five screws
(BVTP3x8)
2
CD mechanism
deck
3
Flat type wire
2-7. BASE UNIT
2
Boss
3
Base uni
1
Yoke bracket
2-8. DISC TABLE
Note:
When the disc table is installed, adjust the positions of
roller cam and mark ” as shown in the figure, then set to
the groove of disc table.
A
3
Stop screw
1
Screw (BVTP3x8)
2
Bracket (BU)
4
Disc table
– 8 –
A
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 SPECTRUM ANALYZER , ENTER , and DISC 1 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.
CD Delivery Mode
• This mode moves the pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
1. Press 1/u button to turn the set ON.
2. Press PLAY MODE button and 1/u button simultaneously.
3. A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery 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 po wer cord is plugged
in and out.
Procedure:
1. Press three buttons SPECTRUM ANALYZER , ENTER , and DISC 2 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.
Sled Servo Mode
• This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pick-up.
Procedure:
1. Select the function “CD”.
2. Press three buttons SPECTRUM ANALYZER , ENTER , and FUNCTION simultaneously.
3. The Sled Servo mode is selected, if “CD” is blanking on the fluorescent indicator tube.
4. With the CD in stop status, press ) button in CD section to move the pick-up to outside track, or 0 button to inside track.
5. To exit from this mode, perform as follows:
1) Move the pick-up to the most inside track.
2) Press three buttons in the same manner as step 2.
Note:
• Always move the pick-up 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.
Change-over of FUNCTION Name
• The FUNCTION name of external input terminal can be changed over to VIDEO or MD. With the FUNCTION selected to “MD”, about
5dB mute is applied to the input gain.
Procedure:
1. Press 1/u button to turn the set OFF.
2. Press 1/u button together with FUNCTION button, and the power is turned on, the display of fluorescent indicator tube changes to
“MD” or “VIDEO” instantaneously, and thus the FUNCTION is changed over.
Change-over of AM Tuner Step between 9kHz and 10kHz
• A step of AM channels can be changed over between 9kHz and 10kHz.
Procedure:
1. Press 1/u button to turn the set ON.
2. Select the function “TUNER”, and press TUNER/BAND button to select the BAND “AM”.
3. Press 1/u button to turn the set OFF.
4. Press ENTER/NEXT and 1/u buttons simultaneously, and the displa y of fluorescent indicator tube changes to “ AM 9k STEP” or “AM
10k STEP”, and thus the channel step is changed over.
LED and Fluorescent Indicator Tube All Lit, Key Check Mode
Procedure:
1. Press three buttons SPECTRUM ANALYZER , ENTER , and DISC 3 simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press DISC 2 button, and the key check mode is activated.
3. In the key check mode, the fluorescent indicator tube displays “K 1 J0 V0”. Each time a button is pressed, “K”value increases. Howe ver ,
once a button is pressed, it is no longer taken into account.
“J” Value increases like 1, 2, 3 ... if rotating ≠ AMS ± (JOG) knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-”
direction.
“V” Value increases like 1, 2, 3 ... if rotating VOLUME knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
4. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.
– 9 –
Aging Mode
This mode can be used for operation check of CD section and tape deck section.
• If an error occurred:
The aging operation stops.
• If no error occurs:
The aging operation continues repeatedly.
1. Aging Mode in CD Section
1-1. Operating procedure of Aging Mode
1. Set discs in DISC 1 and DISC 3 trays.
2. Select the function “CD”.
3. Press three buttons SPECTRUM ANALYZER , ENTER , and KARAOKE PON/MPX simultaneously.
4. The aging mode is activated, if a roulette mark on the fluorescent indicator tube is blinking.
5. In the aging mode, the aging is executed in a sequence given in “1-2. Operation during Aging Mode”.
The aging continues unless an alarm occurred.
6. To exit from the aging mode, press 1/u button to turn the set OFF.
• If a button other than buttons In CD section is pressed during aging, the aging in the CD section is finished.
• To execute aging to the tape deck section successively, press · button in the deck A.
“AGING” is displayed on the fluorescent indicator tube. (For the aging in tape deck, see “2. Aging Mode in Tape Deck Section”.
1-2. Operation during aging Mode
In the aging mode, the program is executed in the following sequence.
1. The disc tray turns to select a disc. (For a disc selection sequence, see Section 1-3.)
2. TOC of disc is read.
3. The pick-up accesses to the last track.
4. Steps 1 through 3 are repeated.
1-3. Disc Selection Sequence
• During the aging mode, discs are selected in the following sequence:
Disc 1 → Disc 3
↑↓
Disc 3 ← Disc 1
2. Aging Mode in Tape Deck Section
2-1. Operating procedure of Aging Mode
1. Load a commercially available 10-minute tape into the decks A and B respectively.
(If a 10-minute tape is not available, another tape may be used but a cycle time will be longer.)
2. Select the function “TAPE”.
3. Rewind tapes in advance by pressing 0 button respectively on decks A and B.
4. Press three buttons SPECTRUM ANALYZER , ENTER , and KARAOKE PON/MPX simultaneously.
5. Press · button on deck A. (This button triggers the aging mode.)
6. The aging mode is activated if “AGING A” is displayed on the fluorescent indicator tube.
7. In the aging mode, the aging is executed in a sequence given in “2-2. Operation during Aging Mode”.
The aging continues unless an alarm occurred.
8. To exit from the aging mode, press 1/u button to turn the set OFF.
2-2. Operation during Aging Mode
In the aging mode, the program is executed in the following sequence.
1. A tape on FWD side is played for one minute.
2. PAUSE STOP is made.
3. Recording is made for 3 minutes. (For the deck not having the record function, the play is executed.)
4. FF is executed up to the end of tape.
5. A tape is reversed, and the tape on REV side is played for one minute.
6. PAUSE STOP is made.
7. Recording is made for 3 minutes. (For the deck not having the record function, the play is executed.)
8. FF is executed up to the end of tape.
9. Steps 1 through 8 are executed for the other deck.
10. Steps 1 through 9 are repeated unless an alarm occurred.
2-3. Deck Selection Sequence
• During the aging mode, decks are selected in the following sequence:
Deck A (FWD) → Deck A (REV)
↑↓
Deck B (REV) ← Deck B (FWD)
– 10 –
SELF-DIAGNOSIS
L
g
oscilloscope
VIDEO board
TP709 (LED)
+
–
X901
TP709 (LED)
IC751
IC251
SL703 (AFADJ)
IC751
IC251
SL702 (ADJ)
SL701 (CAL BAR)
This model has the self-diagnosis function for the VIDEO and
AUDIO decoder sections.
Immediately after the power on, the self-diagnosis function searches
each operation of IC’s around the mechanism control microcomputer (IC701).
The results can be checked by connecting an oscilloscope to TP709
(LED) of the VIDEO board.
Oscilloscope (Waveform)
H
Symptom
No error
Light
L
H
External SRAM (IC751)
error
1 time blinking
H
MPEG decoder (IC201)
error
L
2 time blinking
H
DRAM (IC251) error
3 time blinkin
L
[VIDEO BOARD] (SIDE B)
SECTION 4
TEST MODE
VIDEO CD COLOR-BARS MODE
On this mode, the data of the color-bars signal as a picture signal
and the 1kHz sine wave signal as a sound signal are output by the
mechanism control microcomputer (IC701) for video CD signal
check. When measurement of the voltage and waveform on the
VIDEO board, perform it in this mode.
For refernce, the color-bars signal can be observed at J9001 (VIDEO
OUT) and the sound signal can be observed at J101 (VIDEO (A UDIO) OUT) using an oscilloscope.
1. Connect the lead wire to both ends of the land of SL701 (CAL
BAR) of the VIDEO board.
2. Turn the power on. Press FUNCTION button to select CD.
3. After 2 or 3 seconds later, connect the lead wire.
4. After measuring, remove the lead wire connected.
NOTE:
The 1 kHz sine wave is not outputted when the CD is played once,
but it is not error.
E-F BALANCE MODE
• Refer to SECTION 6 ELECTRICAL ADJUSTMENTS pa ge 15.
1. Connect the lead wire to both ends of the land of SL702 (ADJ)
and SL703 (AFADJ) of the VIDEO board.
2. Turn the power on. Press FUNCTION button to select CD.
3. Short-circuit the lead wire. (At this time, “DISC” on the fluorescent indicator tube will blink (test mode). If it is not blinking,
perform from step 1 again.)
4. Press the · button in playback.
5. Every pressing the REPEAT b utton, the tracking servo and the
sledding servo are turned on or off.
6. When the servo is OFF, the counter on front panel will not be
changed.
7. After measuring, remove the lead wire connected step 1.
[VIDEO BOARD] (SIDE B)
– 11 –
SECTION 5
)
MECHANICAL ADJUSTMENTS
SECTION 6
ELECTRICAL ADJUSTMENTS
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
Mode
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension
Torque meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
36 to 61 g • cm
(0.5 - 0.84 oz • inch)
2 to 6 g • cm
(0.02 - 0.08 oz • inch)
36 to 61 g • cm
(0.5 - 0.84 oz • inch)
2 to 6 g • cm
(0.02 - 0.08 oz • inch)
61 to 143 g • cm
(0.85 - 1.99 oz • inch)
100 g or more
(3.53 oz or more)
100 g or more
(3.53 oz or more)
DECK SECTION 0 dB=0.775V
1. Demagnetize the record/playback head with a head damagnetizer .
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.
Signal
P-4-A100
WS-48B
P-4-L300
10 kHz, –10 dB
3 kHz, 0 dB
315 Hz, 0 dB
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
test tape
P-4-A100
(10kHz, –10dB)
main board
CN403
Pin
3
(L-CH)
Pin
1
(R-CH)
Used forTape
Azimuth Adjustment
Tape Speed Adjustment
Level Adjustment
level meter
set
main board
CN403
Pin
2
(GND
– 12 –
2. Turn the adjustment scre w and check output peaks. If the peaks
e
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
output
level
within
1 dB
within 1dB
Tape Speed Adjustment (Deck A)
Note: Set the test mode using the following method and begin tape
speed adjustment.
In the test mode, the tape will move at double speed or normal
speed each time the H SPEED DUB button is pressed.
Procedure :
With the power turned ON, press the SPECTRUM ANALYZER
button, ENTER button, and EFFECT button simultaneously.
(The “VOLUME” on the fluorescent display tube will blink while
in the test mode.)
To exit the test mode, press the 1/u button.
R-CH
screw
position
peak
L-CH
peak
R-CH
peak
screw
position
3. Mode: Playback
test tape
P-4-A100
(10kHz, –10dB)
in phase 45
main board
CN403
Pin
3
(L-CH)
Pin 2 (GND)
L
set
R
Pin
1
(R-CH)
Waveform of oscilloscope
°
90
°
good
135
oscilloscope
°
wrong
180
°
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location: Playback Head (Deck A)
Record/Playback/Erase Head (Deck B)
1. Load WS-48B into deck B.
2. Play deck B.
3. Press the H SPEED DUB button and play the tape at double
speed.
4. Adjust RV652 of the AUDIO board so that the reading of the
frequency counter becomes 6000 ± 180 Hz.
5. Press the H SPEED DUB button and play the tape at normal
speed.
6. Adjust RV651 of the AUDIO board so that the reading of the
frequency counter becomes 3000 ± 90 Hz.
Adjustment Location: A UDIO 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
test tape
P-4-L300
(315Hz, 0dB)
set
main board
CN403 Pin
Pin
3
1
level meter
(L-CH)
(R-CH)
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.
forward
Adjustment level:
CN403 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: A UDIO board
revers
– 13 –
Record Bias Adjustment (Deck B)
Record Level Adjustment (Deck B)
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjustment, when the tape is rewound after recording, the “REC memory
mode” which rewinds only the recorded portion and playback is
set.
This “REC memory mode” is convenient for performing this adjustment. During recording, the input signal FUNCTION will automatically switch to VIDEO.
1. Press FUNCTION button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Load a tape into deck B, and press the r REC button.
3. Mode: Record
VIDEO (AUDIO)
1) 315 Hz
2) 10 kHz
AF OSC
attenuator
600
Ω
} 50 mV (–23.8 dB)
blank tape
CS-123
set
4. Mode: Playback
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjustment, when the tape is rewound after recording, the “REC memory
mode” which rewinds only the recorded portion and playback is
set.
This “REC memory mode” is convenient for performing this
adjustment. During recording, the input signal FUNCTION will automatically switch to VIDEO.
1. Press FUNCTION button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Load a tape into deck B, and press the r REC button.
3. Mode: Record
VIDEO (AUDIO)
1) 315 Hz
2) 10 kHz
AF OSC
attenuator
600
Ω
} 50 mV (–23.8 dB)
blank tape
CS-123
set
4. Mode: Playback
recorded
position
set
main board
CN403 Pin
Pin
3
1
level meter
(L-CH)
(R-CH)
5. Confirm playback the signal recorded in step 2 become adjustment level as follows.
If these levels do not adjustment le vel, adjust the R V341 (L-CH)
and R V441 (R-CH) on the A UDIO board to repeat steps 3 and 4.
Adjustment level: The playback output of 10 kHz le vel difference
against 315 Hz reference should be ± 1.0 dB.
Adjustment Location: A UDIO board
Adjustment Location
[AUDIO BOARD] (Conductor Side)
RV341(Lch),RV441(Rch)
Record Bias
RV301
RV401
RV301(Lch),RV401(Rch)
Playback Level (Deck B)
RV441
RV341
RV651 (Normal Speed)
RV652 (High Speed)
Tape Speed
RV311(Lch),RV411(Rch)
Playback Level (Deck A)
RV651
RV311
RV411
RV652
recorded
position
set
main board
CN403 Pin
Pin
3
1
level meter
(L-CH)
(R-CH)
5. Confirm playback the signal recorded in step 2 become adjustment level as follows.
If these levels do not adjustment level, adjust the R V301 (L-CH)
and RV351 (R-CH) on the MAIN board to repeat steps 3 and 4.
Adjustment level:
CN403 playback level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location: MAIN board
RV301
[MAIN BOARD] (Component Side)
Record Level (L CH)
1
CN403
IC401
3
RV351
Record Level
(R CH)
– 14 –
CD SECTION
0V
C (DC
voltage)
Tracking servo
Sled servo
OFF
Tracking servo
Sled servo
ON
NOTE :
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩ impedance.
4. Clean the object lens by an applicator with neutral detergent when
the signal level is low than specified value with the following
checks.
S Curve Check
oscilloscope
BD board
TP (FE)
TP (VC)
Procedure :
1. Connect oscilloscope to test point TP (FE) on BD board.
2. Connect between test point TP (FEI) and TP (VC) by lead wire.
3. Turned Power switch on.
4. Put disc (YEDS-18) in and tur ned Power switch on again and
actuate the focus search. (actuate the focus search when disc
table is moving in and out.)
5. Check the oscilloscope waveform (S-curve) is symmetrical between A and B.
And confirm peak to peak level within 3±1 Vp-p.
S-curve waveform
+
–
symmetry
A
B
Within 3
±
1 Vp-p
Note : A clear RF signal waveform means that the shape “◊” can
be clearly distinguished at the center of the waveform.
RF signal waveform
VOLT/DIV : 200mV
TIME/DIV : 500ns
level : 1.3 Vp-p
+0.25
–0.20
E-F Balance (Traverse) Check
oscilloscope
BD board
TP (TE)
TP (VC)
+
–
Procedure :
1. Connect oscilloscpe to test point TP (TE) on BD board.
2. Connect the lead wire to both ends of the land of SL702 (ADJ)
and SL703 (AFADJ) of the VIDEO board.
3. Turned Power switch on. Press FUNCTION button to select
CD.
4. Short the lead wire.
5. Put disc (YEDS-18) in to play the number five track.
6. Press the REPEAT button. (The tracking servo and the sledding servo are turned OFF.)
7. Check the level B of the oscilliscope's waveform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%
Traverse waveform
Center of the waveform
6. After check, remove the lead wire connected in step 2.
Note : • Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the brightness to obtain best waveform.
RF Level Check
oscilloscope
BD board
TP (RF)
TP (VC)
+
–
Procedure :
1. Connect oscilloscope to test point TP (RF) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not.
B
0V
level : 1.3 ± 0.6 Vp-p
A (DC voltage)
8. Press the REPEAT button. (The tracking servo and sledding
servo are turned ON.) Confirm the C (DC voltage) is almost
equal to the A (DC voltage) is step 7.
Traverse waveform
9. Remove the lead wire connected step 1.
– 15 –
VIDEO SECTION
Video Frequency adjustment
1. Connect the frequency counter to check point of the VIDEO
board.
frequency counter
VIDEO board
TP410 (DCLK)
+
–
2. Adjust CT401 of the VIDEO board so that the frequenc y counter
read 13.5MHz ± 40Hz at STOP condition.
Adjustment Location :
[ BD BOARD ] — SIDE A — [ VIDEO BOARD ] — SIDE B —
1
10 11
20
IC103
IC101
(RF)
(VC)
(TE)
(FE)
(FEI)
SL703 (AFADJ)
SL702 (ADJ)
IC751
SL701 (CAL BAR)
CT401
Video
Frequency
IC251
TP410 (DCLK)
– 16 –
SECTION 7
d
d
DIAGRAMS
HCD-V8900/V8900AV
7-1. CIRCUIT BOARDS LOCATION
PANEL board
HP/MIC board
TC-A SW board
CD-LED board
CD-A SW board
DOOR SW board
TRANS board
VIDEO POWER board
FM/AM TUNER PACK
SURROUND boar
VIDEO OUT board
VIDEO board
MAIN board
KEYCON board
7-2. BLOCK DIAGRAMS
– KEY CON SECTION –
J761
MIC 1
J762
MIC 2
MIC AMP
IC760 (1/2)
31
RV760
MIC LEVEL
1
LPF1
ECHO AMP
IC760 (2/2)
67
ECHO
IC761
9
2
LPF2
8
RV761
ECHO LEVEL
TC-B SW board
Note: pA is including in AUDIO board.
AUDIO board
(including
TABLE SENSOR board
CD-B2 SW board
p
A)
POWER board
CD-B1 SW board
p
A
MOTOR board
SWITCH
IC1403
5
3
KEY CONTROL
IC1401
LPF1
IN
22
MIX
OUT
15
91011
Q1401
4
L IN
K CON
A
Rch
DATA
CLOCK
STORBE
9
78
LEAF SWITCH boar
BD board
09
• R CH : Same as Lch
LATCH
CLK
DATA
L OUT
• Signal path
: FM
: MIC
MAIN
SECTION
(Page 25)
CD MOTOR board
LED board
– 17 – – 18 –
HCD-V8900/V8900AV
– CD SECTION –
OPTICAL PICK-UP
BLOCK (KSS-213D/Q-NP)
LASER
DIODE
PD
DETECTOR
E
AC
BD
F
LD
TRACKING
COIL
FOCUS
COIL
LD
POWER
1
DRIVE
4
M102
SLED
MOTOR
M101
SPINDLE
MOTOR
LD
Q101
VC
M
M
RF AMP
IC103
APC LD
2
AMP
RF FQ
AMP
19
RF
INTEGRATOR
16
15
13
1110
VC
12
INTE-
GRATOR
4
5
19
20
10
9
23
24
15MUTE
1
3
4
5
6
8
9
T+
1
T–
F+
16
F–
17
13
12
27
26
09
RF
SUMMING
AMP
FOCUS
ERROR
AMP
TRACKING
ERROR
AMP
VC
BUFFER
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED MOTOR DRIVE
IC102
2
DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
IC101
ASY0
39
RF AC
36
ASY1
38
RF DC
26
TE
27
SE
28
FE
29
TFDR
4
TRDR
6
FFDR
8
FRDR
10
SRDR
2
SFDR
100
MDP
96
ASYMMETRY
CORRECTION
A/D
CONVERTER
MIRR
DFCT
FOK
DETECTOR
MIX
FOK
DFCT
MIRR
SERVO DSP
FOCUS
SERVO
TRACKING
SERVO
SLED
SERVO
PWM
GENERATOR
TRACKING
PWM
GENERATOR
FOCUS
PWM
GENERATOR
SLED
PWM
GENERATOR
DIGITAL
PLL
CLOCK
GENERATOR
EFM
DEMODULATOR
62
XTAL
SYNC
PROTECTOR
TIMING
GENERATOR 1
CLV SERVO
PROCESSOR
1B TIMS
OVERSAMPLING
FILTER
NOISE
SHAPER
REGISTER
DATA BUS
ERROR
CORRECTOR
TIMING
GENERATOR 2
PRIORITY
EMCODER
ADDRESS
GENERATOR
32K
RAM
D/A
DATA
PROCESSOR
MUTE
79 54
TABLE
MOTOR
M201
GFS
M
DIGITAL
OUT
PEAK
DETECTOR
SERIAL/PARALLEL
PROCESSOR
INTERFACE
S STOP
99
+5V
SWITCH
MOTOR DRIVER
OUT1
7
3
OUR2
SERVO
S901
LIMIT
IC201
SUBCODE
P-W
PROCESSOR
SUBCODE
Q
PROCESSOR
INTERFACE
SEQUENCER
IN1
9
1
IN2
CPU
SERVO
AUTO
S201
UP SW
DISC
TABLE
SENSOR
IC202
MD2
DOUT
EXCK
SBSO
SUBQ
SQCK
SCLK
DATA
LRCK
BCLK
SCOR
WFCK
DATA
XLT
CLK
SENS
C2PO
FOK
DFCT
MIRR
XRST
+5V
70
71
76
75
77
78
83
46
45
47
74
73
86
87
88
80
56
93
92
91
81
LDON
384FS
SUBQ
SQCK
SCLK
ADATA
LRCK
BCK
SCOR
DATA
XLT
CLK
SENS
C2PO
XRST
AMUTE
UP SW
T.SENS
B
VIDEO
SECTION
(Page 21)
C
MAIN
SECTION
(Page 25)
TBL.L
TBL.R
– 19 – – 20 –
• R CH: Same as L ch
• SIGNAL PATH
: CD
: VIDEO
HCD-V8900/V8900AV
– VIDEO SECTION –
BCK
ADATA
CD
CD
IC501
(2/2)
LRCK
C2PO
384FS
ADATA
LRCK
BCLK
28.63636MHz
45.1584MHz
DATA
CLK
AMUTE
384FS
416
384FS
DATA
CLK
AMUTE
SQCK
SUBQ
SCLK
XLT
LDON
SCOR
SENS
XRST
X202
X201
B
SECTION
(Page 20)
B
SECTION
(Page 20)
09
IC501 (1/2)
9
8
7
6
5
106
107
73
78
74
11
10
77
76
75
71
62
48
BUFFER
XTL0O
2
XTL01
3
XTL2O
XTL2I
DATA
CLK
AMUTE
SQCK
SUBQ
SCLK
XLT
LDON
SCOR
SENS
RESET
38–43 46–55•
•
•11–13 15–19
D0
112
111
110
109
103
100
101
102
D-RAM INTERFACE
17–21 23 24 32 33••••
•
A0
I/O8
2–10 21 23–25
22–29 • 31–3513 – 20
A0
D7
11
12
13
14
15
2–5 7–10 35–38 40–43
•
DQ1
I/O1
18–21 24–28•
DQ16
D-RAM
IC251
S-RAM
IC751
••
CD-ROM
DECODER
MPEG
AUDIO
DECODER
A0
A12
A12
MPEG DECODER
IC201
VIDEO
POSTPROCESSOR
SYNC GENERATOR
A0
A3
XTCS
AS
DECODER
7–13 16
LCAS
UCAS
IC772
WE
6
54
3
12
40
IC701
MPEG
VIDEO
EACH CIRCUIT BLOCK
HOST INTERFACE
5 6•• •119 120
•
D0
D7
IC771
A17
MPEG
SYSTEM
DECODER
34
3735
301516 31
W
A8
RAS
CE1
OE
55
RD
272022
8
10 9
11
12
13
41 54 56 43 70 7 8
A18
MECHA CONTROL
&
XHCS
XWR
WR
XHDT
WAIT
117115116114
XHIRQ
XHIRQ
EXTAL
71
73
Y
76
80
63
C
70
97
95
92
93
94
89
56
57
58
59
118
VDAC-XLAT
XTAL
5251
10MHz
•
XRST
GENERATOR
CMD0
CMD1
DF-XLAT
CMD2
CMD3
MREQ
X701
XSGRST
HSYNC
VSYNC
FID
DCLK
XOSDEN
OSD B
OSD G
OSD R
CLOCK
IC272
SACK
QINT
NPIN
Y0-Y7
C0-C7
1
2
3
4
5
6
72
64
OSD B
OSD G
OSD R
XOSDEN
VSYNC
HSYNC
DCLK
SYSTEM SELECT
11
Y
18
20
C
27
18
17
16
15
19
20
CK 1/2 Q
1 5
S9001
RGB-YUV
CONV.
TIMING
GEN.
98 10097
HSYNC
OUTPUT
CONT.
SYNC
CONT.
PAL
AUTO
NTSC
NOISE REDUCTION
REDUSER
MEMORY
DCLKI
VSYNC
DCLK
VIDEO
RAM
DATA
SEL.
34
CMD0
35
CMD1
36
CMD2
37
CMD3
44
SACK
18
QINT
MREQ
43
IC301
NOISE
CONT.
OSD
IC271
6.75MHz
CD-XRST
YUV-RGB
CONV.
DRAM
IF
DATA INPUT
SHIFT
RESISTOR
DISPLAY
POSITION
CONT.
OSC
8
IIC INTERFACE
IC901
10BIT VIDEO D/A CONVERTER
IC401
60
67
51
58
29
30
31
4
3
2
1
NR-XCS
MCLK
MDATA
RESET
MDATA
OS-XLAT
MCLK
1
4
•
6
9
11
18
CT401
13.5MHZ
DEMPX, LEVEL
TRANSLATOR
&
INTERPOLTATOR
CLOCK GENARATOR
IC402
56
4
3
X401
27MHz
VIDEO AMP
IC451
V
HSYNC
Y, C/Y, U, V
SELECTOR
&
INTER-
POLATOR
CLOSED
CAPTION
ENCODER
SIO & I2O-BUS
CONT.
49 504859 60625557 51
VDAC-XLAT
CLK
DATA
Y
C
LPF
LPF
DELAY
56
1/2
XRST
DCLK
MODULATOR
SYNC
SLOPE
GEN.
SYNC GEN.
TIMING CONT.
XVRST
SUB
CARRIER
GEN.
&
FID
VSYNC
24
29325
5 7
3
Y/C AMP
IC452
7
1
J9001
VIDEO OUT
4
3
J9002
S VIDEO OUT
• R CH: Same as L ch
• SIGNAL PATH
: VIDEO
: Y
: CHROMA
: CD
DIGITAL FILTER & D/A CONVERTER
384FS
BUFFER
IC181
ADATA
13
LRCK
4
BCLK
1
DATA
CLK
DF-XLAT
68494847
MCLK
MDATA
NR-XCS
OS-XLAT
15
RESET
55
IIC-DATA
56
X2
IIC-CLK
X1
111052
X901
5MHz
AMUTE
XRST
11
6
3
6
11
12
10
3
4
5
2
TIMING
CIRCUIT
INPUT PLM
MODE
IC101
D/A
CONV.
CLOCK
GENERATOR
MUTE
CIRCUIT
INT
1
21
22
27
25
16
18
L CH
XRST
IIC-DATA
IIC-CLK
ACTIVE LPF
2
3
X101
33.8688MHz
IC102
16 7
R CH
D
MAIN
SECTION
(Page 25)
– 21 – – 22 –
HCD-V8900/V8900AV
– DECK SECTION –
HP101
PB HEAD
(DECK A)
REC/PB HEAD
(DECK B)
HRPE101
ERASE HEAD
PB A/B
PB L
LM ON/OFF
NORM/HIGH
NR ON/OFF
REC/PB/PASS
REC L
BIAS ON/OFF
RM ON/OFF
RELAY REC/PB
CAP M ON/OFF
CAP M H / L
A SHUT
B
MAIN
SECTION
(Page 25)
13
2
DOLBY NR
RECOUT
NORM
24 25
S1008
B CrO
15
B 120/70
BIAS SW
CROM
2
PAS
DOL
DOLBY
TYPE B
M1
CAPSTAN
MOTOR
CN403
3
R CH
1
PB OUT
8
LM ON/
20
OFF
NORM/
14
HIGH
NR ON/
18
OFF
19
PB
RIN
6
BIAS ON/OFF
RM ON/OFF
M
CAP M SWITCH
Q405, 407
SPEED
CONTROL
RV651
NORMAL
SPEED
Q651
16
17
RV652
HIGH
SPEED
SWITCH
Q406
REEL
DETECT
Q1001
S1004
A CrO
RV311
4
PLAYBACK
LEVEL
DECK A
RV301
PLAYBACK
LEVEL
DECK B
RV341
REC
BIAS
REC BIAS
BIAS OSC
T621, Q621, 622
IC611
L
R
L
R
X
R CH
R CH
3
P
ERASE BIAS
IC601
1
IC602
R
REC/PB
12
PB-A/B
A IN
2
B IN
4
RV301
REC LEVEL
+7.5V
EQIN
Q623, 901
10
EQOUT
11
A 120/70
70
120
DECK PROCESS
IC401
10
REEL
DETECT
Q1002
S1001 (A PLAY)
• R CH : Same as L ch
• SIGNAL PATH
+5V
S1002 (B PLAY)
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
09
2
OUT1
OUT2
TRIGGER
MOTOR
DRIVE
IC402
M2
TRIGGER
MOTOR
M
10
S1003
(A HALF)
S1005
(REC A)
S1006
(B HALF)
S1009
(REC B)
VZ
IN2
IN1
+5V
4
6
5
SWITCH
Q408, 409
B SHUT
A PLAY
B PLAY
A HALF
BHALF
TRIG H / L
B TRIG
A TRIG
– 23 – – 24 –
HCD-V8900/V8900AV
– MAIN SECTION –
(Page 18)
A
KEY CON
SECTION
J101
PHONO
IN
L
J101
VIDEO
(AUDIO)
IN
L
RELAY REC/PB
B
DECK
SECTION
(Page 24)
CAP M ON/OFF
FM/AM
TUNER
TUNER UNIT IS
SUPPLIED AS
THE ASSEMBLED
BLOCK
C
CD
SECTION
(Page 20)
(Page 22)
D
VIDEO
09
SECTION
L IN
DATA
CLK
LATCH
K CON
L OUT
PB L
REC L
A SHUT
B SHUT
B HALF
A HALF
A PLAY
B PLAY
PB A / B
NORM/HIGH
BIAS ON/OFF
RM ON/OFF
NR ON/OFF
REC/PB PASS
LM ON/OFF
CAP M H/L
A TRG
B TRG
TRIG H/L
ST L
COM DIN
COM DATA
STEREO
TUNED
ST CE
MUTE
TBL. L
TBL. R
T. SENS
UP SW
L CH
XRST
IIC-DATA
IIC-CLK
3
4
5
6
31
PHONO EQ AMP
IC101
MUTE
Q121
DATA
CLK
V
TC
ST
CD
INPUT SELECT
IC102
1
2
4
5
MUTE
CONTROL
Q123,124
A
B
INH
D+5V
D201
(DISC No.)
DOLBY PRO LOGIC
IC601
C-OUT
9
LIN
S-OUT
3
4
2
INPUT SELECT
IC103
3
5
3
10
9
6
96
RELAY
26
A SHUT
27
B SHUT
28
B HALF
97
A HALF
94
A PLAY SW
95
B PLAY SW
87
PB A/B
88
EQ H//N
89
BIAS
90
REC MUTE
91
NR ON/OFF
R/P PASS
92
93
TC MUTE
82
CAP H/N
83
A TRG
84
B TRG
85
TRG LOW
86
CAP M ON/OFF
1
41
VOL LAT
2
42
PL LAT
3
44
COM DOUT
4
45
COM CLK
66
ST DIN
70
STEREO
TUNED
69
68
ST CE
72
ST MUTE
67
ST DOUT
5
4
K-CON-LAT
6
K-CON-ON
5
60
TBL L
61
TBL R
76
T SENS
77
UP SW
62
TRAY LED
Q201
XRST
57
4
9
10
11
INPUT CHANGE
L-OUT
41
DATA
42
CLK
40
EN
69
71
28
29
30
54
MASTER CONTROL
IC701
34
REAR
35
37
FRONT
MICON
INTERFACE
34
32 33
3
4
LATCH
3
427 LAT SW F CON
CENTER
65 64
99
3
4
2
10
S-IN
8
L-IN
3
DATA
2
CLK
4
EN
DBFB H/L
TA MUTE
R RELAY
IIC DATA
CD POWER
STK MUTE
DELAY
IC602
POWER
IIC CLK
RESET
AC CUT
XT1
XT2
S-OUT
FRONT
X1
X2
L-MIX
OUT
XTAL
XTAL
61
REC 2A
62
98
2
1
7
55
56
15
20
11
10
14
13
46
100
13
16
23
24
EQ
D951
5MHz
FRONT
X601
8MHz
RESET
SWITCH
Q951
RESET
IC951
+5V
X701
X702
32.768KHz
MUTE
SWITCH
Q912
CLK
DATA
X601
8MHz
45 44 43 42
EQUALIZER / VOLUME
IC201
DATA
28
CLOCK
27
14
RESET
12
XOUT
13
XIN
SEG1-35
67 - 100 • 1
FLUORESCENT INDICATOR TUBE
J101
VIDEO
(AUDIO)
OUT
L
+ +
S.WOOFER
MODE
SWITCH
Q206
DISPLAY CONTROL
IC601
GR1-16
51 - 66
FL601
39
REAR
CENTER
6
5
LED13
LED15
LED18
LED SELECT
SIRCS
SPEANA 1
SPEANA 2
SPEANA 3
SPEANA 4
DOOR SW
VF
AMP
IC861
BB22
40
DBFB
SWITCH
Q201
LED1
•
L+R
JOG A
JOG B
KEY 5
KEY 1
VOL A
VOL B
3
5
BB12
41
– 25 – – 26 –
VOLUME
IC604
IC603
1
AMP
7
7
FRONT
38
DBFB
SWITCH
Q202
3
10
•
15
•
16
•
18
20
22
23
25
47
29
39
42
43
44
45
46
26
41
38
24
40
LED
SWITCH
•
•
•
•
D/A
37
33
S701
VOLUME
ROTARY
ENCODER
3
IN
14
IN
4
8
CLK
3
9
DATA
1
10
PANEL LED
LED
CONTROL
Q601
REMOTE
CONTROL
RECEIVER
IC602
S711
= AMS +
ROTARY
ENCODER
KEY
MATRIX
S681
6
OPEN
MUTE
Q254
MUTE
SWITCH
Q120
2
OUT
15
OUTLATCH
• R CH: Same as L ch
• SIGNAL PATH
: FM
: CD
: PB
: REC
: VIDEO (AUDIO)
MUTE
Q602
MUTE
Q601
Q602,603
REAR
CENTER
FRONT
DBFB
POWER ON/OFF
R RELAY
D+5V
CD POWER
STK MUTE
REAR
CENTER
E
POWER
SECTION
(Page 27)
HCD-V8900/V8900AV
– POWER SECTION –
E
MAIN
SECTION
(Page 26)
09
REAR
CENTER
FRONT
DBFB
STK MUTE
R RELAY
CD POWER
POWER ON/OFF
FRONT
POWER AMP
IC201
1 10
6
A+5V (SW)
AU/D5V SW
REAR
CENTER
Rch
SWITCHED
+5V SW
+5V REG
THERMAL
Q670,671
THP670
OVER LOAD
D5V
Q9003
Q906
DET
DET
Q201
Q9004
Q907
OVER LOAD
MUTE
SWITCH
Q331
1
DET
Q601,651
POWER AMP
IC601
1318
6
Rch
+5V
D905
D7V
A+7.5V
A–7.5V
+12V
ST10V
PRO-LOG 10V
10
Q323
Rch
+7.5
1
–7.5 EN
10
+5V REG
IC9002
3 1
+5V REG
IC902
3 1
+7V REG
IC903
3 1
+7V, –7V REG
IC901
4
+12V REG
IC904
3 1
3 1
+10V REG
IC905
2
1
Q901
RY401
RY402
6
PROTECTOR
PROTECT
SWITCH
VCC
2
9
VEE
POWER B+
POWER B–
IC301
7
Q301
UNREG
–12V
SURR B+
SURR B–
TM402
SURROUND
SPEAKER
SPEAKER
PHONES
+3.3V REG
IC801
2 1
V8900
T501
POWER
TRANSFORMER
M
TM401
FRONT
J760
D+5V
(SW)
TRANSFORMER
REAR
CENTER
M901
FAN
MOTOR
V8900AV
T901
POWER
SP,MY,IA
VOLTAGE
SELECTOR
S901
D+5V
(UNSW)
+5V SW
Q9001
+5V REG
IC9001
3 1
Q9002
• R CH : Same as L ch
• SIGNAL PATH
: FM
• Abbreviation
SP : Singapore model.
AC
MY : Malaysia model.
IN
IA : Indonesian model.
CENTER
FAN MOTOR
DRIVER
Q961, 962
D+3.3V
RECT
D104,105
REAR
VF
VF
FRONT
Rch
UNREG
–12V
–1
–2
RELAY
DRIVE
Q404
Rch
–1
RELAY
DRIVE
Q403
RELAY
CONTROL
Q402
HP / SP
SWITCHING
VFDP
Q401,405
RECT
D302,303
VF REG
Q941
4
RECT
D901
RECT
+B
D110,111
RECT
D101
RECT
D102
– 27 – – 28 –
HCD-V8900/V8900AV
5Vp-p
44.1kHz
2.11MHz
5Vp-p
45MHz
0.86Vp-p
4.6Vp-p
6.74MHz
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
specified.
1
4
/
W or less unless otherwise
• % : indicates tolerance.
¢
•
: internal component.
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
Note: The components identified b y mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
E : PB (DECK A)
a : REC (DECK A)
d : PB (DECK B)
m : CHROMA
n : Y
o : VIDEO
J : CD
I : PHONO
• Abbreviation
SP : Singapore model.
MY : Malaysia model.
IA : Indonesian model.
CH : Chinise model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
p : parts mounted on the conductor side.
®
•
•
: Through hole.
¢
: internal component.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts face side: P arts on the parts face side seen from the
(Side A) parts face are indicated.
• Indication of transistor
C
Q
These are omitted
EB
C
EB
These are omitted
WAVEFORMS
– BD SECTION –
1
IC101 #§ RFAC (PLAY)
2
APPROX 500mVp-p
IC101 @¶ TE (PLAY)
3
APPROX 200mVp-p
IC101 @ª FE (PLAY)
4
7.5µsec
IC101 (§ MDP (PLAY)
– PANEL SECTION –
1
8MHz
IC601 !™ X-OUT
1.3Vp-p
2.6Vp-p
2.5V
2.5V
4Vp-p
– VIDEO SECTION –
1
TP115 LRCK
2
TP117 BCLK
3
28.63636MHz
IC201 2 XTL0O
4
IC201 `⁄‚fl XTL2O
5
5Vp-p
V
IC201 (£ VSYNC
6
H
IC201 (™ HSYNC
7
IC271 8 OSCIN
– MAIN SECTION (1/5) –
1
4.8Vp-p
8MHz
IC602 @¢ XTAL
3Vp-p
5Vp-p
8
IC401 @¢ COMPO
9
!º
!¡
!™
!£
!¢
H
H
IC401 @ª YOUT
H
IC452 3
13.5MHz
TP410 DCLK
27MHz
TP409 27M
H
TP453 COUT
H
TP452 Y OUT
!∞
1.2Vp-p
H
TP451 VOUT
!§
1.2Vp-p
10MHz
IC701 %¡ EXTAL
!¶
0.6Vp-p
5MHz
IC901 0 X2
!•
4.5Vp-p
44.1kHz
TP104 LRCK
!ª
4.4Vp-p
2.11MHz
TP102 BCLK
@º
1.8Vp-p
33.8MHz
TP101 384FS
@¡
2Vp-p
33.8MHz
IC101 @¡ XOUT
– MAIN SECTION (2/5) –
1
8MHz
IC701 0 X2
2
32.768kHz
IC701 !£ XT2
5.5Vp-p
5.2Vp-p
1.5
Vp-p
5.4Vp-p
5.6Vp-p
5Vp-p
5Vp-p
5Vp-p
1.5Vp-p
– 29 –
– 30 –
HCD-V8900/V8900AV
7-3. PRINTED WIRING BOARD – CD SECTION –
• See page 17 for Circuit Boards Location.
• Semiconductor
Location (Side A)
Ref. No. Location
IC101 B-2
Q101 A-2
(Page 36)
• Semiconductor
Location (Side B)
Ref. No. Location
IC101 B-2
IC103 A-2
– 31 – – 32 –
7-4. SCHEMATIC DIAGRAM – CD SECTION –
• See page 29 for Waveforms.
• See page 96 for IC Pin Functions.
HCD-V8900/V8900AV
(Page 39)
– 33 – – 34 –
HCD-V8900/V8900AV
7-5. PRINTED WIRING BOARD – VIDEO SECTION – • See page 17 for Circuit Boards Location.
(Page 48)
(Page 32)
(Page 38)
• Semiconductor
Location (Side A)
Ref. No. Location
IC101 B-7
IC102 B-8
IC103 B-8
IC201 A-3
IC271 B-4
IC272 B-4
IC301 A-4
IC401 A-5
IC451 A-7
IC452 A-7
IC701 A-1
IC771 C-1
IC772 B-4
IC901 C-3
• Semiconductor
Location (Side B)
Ref. No. Location
IC181 B-4
IC251 B-6
IC402 A-3
IC501 C-5
IC751 B-7
IC801 C-4
– 35 – – 36 –
7-6. SCHEMATIC DIAGRAM – VIDEO (1/4) SECTION –
• See page 30 for Waveforms.
• See page 90 for IC Block Diagrams.
• See page 98 for IC Pin Functions.
HCD-V8900/V8900AV
(Page 41)
(Page 39) (Page 40)
(Page 41)
– 37 – – 38 –
HCD-V8900/V8900AV
7-7. SCHEMATIC DIAGRAM – VIDEO (2/4) SECTION –
• See page 30 for Waveforms.
• See page 35 for Printed Wiring Board.
• See page 102 for IC Pin Functions.
(Page 37)
(Page 37)
(Page 43)
(Page 39)
(Page 43)
– 39 – – 40 –
7-8. SCHEMATIC DIAGRAM – VIDEO (3/4) SECTION –
• See page 30 for Waveforms.
• See page 35 for Printed Wiring Board.
• See page 92 for IC Block Diagrams.
• See page 104 for IC Pin Functions.
(Page 38)
HCD-V8900/V8900AV
(Page 38)
– 41 –
(Page 43)
– 42 –
HCD-V8900/V8900AV
7-9. SCHEMATIC DIAGRAM – VIDEO (4/4) SECTION –
• See page 30 for Waveforms.
• See page 35 for Printed Wiring Board.
• See page 90 for IC Block Diagrams.
(Page 40)
(Page 41)
(Page 52)
(Page 56)
(Page 40)
– 43 – – 44 –
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