Sony HCD-V919AV Schematic
HCD-V919A V
SERVICE MANUAL
HCD-V919AV is the Amplifier, Video CD
player, Tape Deck and Tuner section in
MHC-V919AV.
This stereo system is equipped with the Dolby Btype noise reduction system and Dolby Pro Logic
Surround decoder*.
* Manufactured under license from Dolby Laboratories Licensing Corporation.
DOLBY , the doub le-D symbol a and “PR O LOGIC”
are trademarks of Dolby Laboratories Licensing Corporation.
CD
Section
Tape
Deck
Section
E Model
Chinese Model
Model Name Using Similar Mechanism HCD-V717
CD Mechanism Type CDM38L-5BD24AL
Base Unit Name BU-5BD24AL
Optical Pick-up Name KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-V717
Tape Transport Mechanism Type
TCM-230AWR1/
230PWR1
SPECIFICATIONS
– Continued on next page –
MICROFILM
MINI Hi-Fi COMPONENT SYSTEM
TABLE OF CONTENTS
1. SERVICING NOTES.............................................. 3
2. GENERAL .................................................................. 6
3. DISASSEMBLY ........................................................ 10
4. TEST MODE............................................................. 13
5. MECHANICAL ADJUSTMENTS...................... 16
6. ELECTRICAL ADJUSTMENTS
DECK Section................................................................ 16
CD Section ..................................................................... 19
VIDEO Section .............................................................. 21
7. DIAGRAMS
7-1. Block Diagram – SERVO Section –............................. 23
7-2. Block Diagram – AUDIO/VIDEO CD Section – ........ 25
7-3. Block Diagram – TAPE DECK Section – .................... 27
7-4. Block Diagram – MAIN Section (1/2) – ...................... 29
7-5. Block Diagram – MAIN Section (2/2) – ...................... 31
7-6. Block Diagram – DISPLAY/KEY CONTROL/
POWER SUPPLY Section – .......................................... 33
7-7. Note for Printed Wiring Boards and
Schematic Diagrams ...................................................... 36
7-8. Printed Wiring Board – BD Section –.......................... 37
7-9. Schematic Diagram – BD Section –............................ 39
7-10. Printed Wiring Board – VIDEO Section – ................... 41
7-11. Schematic Diagram – VIDEO Section (1/2) – ............ 43
7-12. Schematic Diagram – VIDEO Section (2/2) –............ 45
7-13. Printed Wiring Boards – CD MOTOR Section –......... 47
7-14. Schematic Diagram – CD MOTOR Section – ............ 49
7-15. Printed Wiring Board – TAPE DECK Section – .......... 51
7-16. Schematic Diagram – TAPE DECK Section –............ 53
7-17. Printed Wiring Board – LEAF SW Section – .............. 55
7-18. Schematic Diagram – LEAF SW Section – ................ 55
7-19. Printed Wiring Board – MAIN Section –..................... 57
7-20. Schematic Diagram – MAIN Section (1/4) –.............. 59
7-21. Schematic Diagram – MAIN Section (2/4) –............... 61
7-22. Schematic Diagram – MAIN Section (3/4) –............... 63
7-23. Schematic Diagram – MAIN Section (4/4) –............... 65
7-24. Printed Wiring Board – PANEL Section –................... 67
7-25. Schematic Diagram – PANEL Section –...................... 69
7-26. Printed Wiring Boards – DISPLAY Section – ............. 71
7-27. Schematic Diagram – DISPLAY Section –................. 73
7-28. Schematic Diagram
– MIC/HEADPHONE Section – ................................... 75
7-29. Printed Wiring Boards
– MIC/HEADPHONE Section – ................................... 76
7-30. Printed Wiring Board – POWER AMP Section –........ 77
7-31. Schematic Diagram – POWER AMP Section – ........... 79
7-32. Schematic Diagram
– TRANSFORMER Section –....................................... 81
7-33. Printed Wiring Board
– TRANSFORMER Section –....................................... 83
7-34. Printed Wiring Board – SURROUND Section – ......... 84
7-35. Schematic Diagram – SURROUND Section – ............ 85
7-36. IC Pin Function Description .......................................... 94
8. EXPLODED VIEWS...............................................106
9. ELECTRICAL PARTS LIST ..............................114
– 2 –
SECTION 1
SERVICING NOTES
SELF-DIAGNOSIS
This unit is equipped with a self-diagnosis function.
The function is used for diagnosing the conditions of the circuits
of the VIDEO board.
The circuits can be determined if normal or abnormal by the lighting of D502 of the VIDEO board.
Lighting of D502
When lit : Operates normally
Blinks repeatedly : The circuit may be faulty.
[VIDEO Board] (Side A)
IC505
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
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 damaged by heat.
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.
D502
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
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.
– 3 –
MODEL IDENTIFICATION
– Back Panel –
PART No.
MODEL PART No.
Malaysia and Singapore models 4-900-722-0π
Chinese model 4-900-722-1π
Indonesia model 4-900-722-2π
Thai model 4-900-722-3π
IC502 OF VIDEO BOARD
IC502 of the VIDEO board consists of the former type and new
type. The following table shows the differences between the two
types.
Only spare parts for the new type IC502 are supplied.
Units using the former IC502 will not function when replaced with
the new type without performing the following procedure.
Consequently, replace IC502 of units using the former type according to the following procedure.
Table of Differences
FORMER TYPE NEW TYPE
C407, 408 MOUNT NO MOUNT
IC502 M30620MC-302FP M30620MC-305FP
JW421, JW422 NO MOUNT MOUNT
IC402 MOUNT NO MOUNT
R413, 421, 422 MOUNT NO MOUNT
X401 MOUNT NO MOUNT
Replacing Procedure
1. Remove IC402.
2. Solder JW421 and JW422, or short-circuit with a lead wire,
etc.
3. Replace IC502 with a new one.
How to Differentiate
[VIDEO board] (Side A)
Those with IC402 : FORMER TYPE
Those without IC402: NEW TYPE
– 4 –
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH
e
TURNS OFF
1
Remove the case.
3
pull-out the disc tray.
2
Turn the cam to the
direction of arrow.
NOTE FOR INSTALLATION (ROTARY ENCODER)
BU cam
groove
Note: When attaching the Base unit, Insert th
section A into the groove of BU cam.
section A
Note:When attaching the BU cam,
engage the Rotary encoder
switch as shown in the figure.
– 5 –
LOCATION OF CONTROLS
• Front view
SECTION 2
GENERAL
#¢
#¢
#£
#™
#¡
#º
@ª
@•
1 2 3 4 576
@£
@™ @¡@¢@∞@§@¶
@º
8
9
0
!¡
!™
!£
!¢
!∞
!§
!¶
!•
!ª
1 1/u (POWER) button
2 DISC 1 button and indicator
3 DISC 2 button and indicator
4 DISC 3 button and indicator
5 DISC SKIP/EX-CHANGE button
6 § button
7 Disc tray
8 Decoration
9 § button (Deck B)
0 Deck A 9, ( buttons and indicators
!¡ Deck B 9, ( buttons and indicators
!™ CD ^ button and indicator
!£ TUNER, BAND button
!¢ PRO LOGIC button and indicator
!∞ DSP button and indicator
!§ KARAOKE PON/MPX button
!¶ GROOVE button and indicator
!• VOLUME knob
!ª PHONES jack
@º DBFB button
@¡ –, 0 button and indicator
@™ ENTER/NEXT button and indicator
@£ p button
@¢ AUTO BPM button and indicator
@∞ +, ) button and indicator
@§ BEAT, JAM button and indicator
@¶ BEAT, SPEED button
@• BEAT, SELECT button
@ª BEAT, ON/OFF button and indicator
#º P FILE MEMORY button
#¡ GEQ CONTROL button
#™ FILE SELECT button
#£ EFFECT button and indicator
#¢ FUNCTION button
#∞ § button (Deck A)
– 6 –
^§
^∞
^¢
^£
^™
^¡
^º
%ª
%•
%¶
%§
%£
#§ Display window
#¶ PBC OFF indicator
#§
#¶
#•
#ª
$º
$¡
$™
$£
$¢
$∞
$§
%™ $ª $• $¶%º%¡%¢%∞
#• PBC indicator
#ª VIDEO CD indicator
$º PLAY MODE, DOLBY NR,
TUNER MEMORY button
$¡ EDIT, DIRECTION button
$™ REPEAT, STEREO/MONO button
$£ r REC button and indicator
$¢ P PAUSE button and indicator
$∞ HI-DUB button
$§ CD SYNC button
$¶ NEXT button
$• PREV button
$ª RETURN button
%º SELECT button
%¡ ACTIVE button
%™ JOG dial
%£ BEAT LEVEL button
%¢ PAD B button
%∞ P AD A button
%§ MIC 2 jack
%¶ MIC 1 jack
%• MIC LEVEL knob
%ª ECHO LEVEL knob
^º DEMO button
^¡ DISPLAY button
^™ CLOCK/TIMER SET button
^£ TIMER/SELECT button
^¢ CD LOOP button
^∞ CD FLASH button
^§ CD NON-STOP button and indicator
– 7 –
• Rear view
!¢
!£
!™
!¡
0
1 2 3
4
5
6
1 S VIDEO OUT jack
2 SYSTEM SELECT switch
3 VIDEO OUT jack
4 FM antenna terminal
5 AM antenna terminals
6 VOLTAGE SELECTOR switch
7 SURROUND SPEAKER, CENTER terminals
8 SURROUND SPEAKER, REAR terminals
9 FRONT SPEAKER terminals
0 SUPER WOOFER jack
!¡ MD OUT jacks
!™ MD IN jacks
!£ VIDEO (AUDIO) IN jacks
!¢ CD DIGITAL OUT, OPTICAL connector
789
– 8 –
This section is extracted from
instruction manual.
– 9 –
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
LOADING PANEL
4
loading panel
3
two claws
2
Pull-out the disc tray.
1
Turn the cam to the direction
of arrow.
FRONT PANEL
2
screw
(BVTP3 × 10)
5
front panel assembly
4
flat type wire
(CN101)
3
connector
(CN203)
4
flat type wire
(CN106)
4
flat type wire
(CN107)
2
screw
(BVTP3 × 10)
3
connector
(CN752)
1
three screws
(BVTP3 × 8)
– 10 –
CASSETTE MECHANISM DECK
1
two screws
(BVTT2
×
4)
1
two screws
(BVTT2
×
4)
6
three screws
(BVTP2.6
×
8)
6
two screws
(BVTP2.6
×
8)
8
two screws
(BVTP2.6
×
8)
6
screw
(BVTP2.6
×
8)
6
screw
(BVTP2.6
×
8)
9
bracket
7
mechanism deck
2
damper, oil
2
damper, oil
3
Push the cassette lids.
4
Remove the cassette lids.
5
spring
5
spring
)
PANEL BOARD AND CONT-PANEL BOARD
6
5
konb (Jog)
nut
7
konb
(Volume)
8
nut
0
CONT-PANEL board
3
shield
1
ten screws
(BVTP2.6
4
flat type wire
(CN602)
×
8)
9
four screws
(BVTP2.6
1
three screws
(BVTP2.6
2
PANEL board
×
8)
×
8
– 11 –
9
six screws
(BVTP2.6
×
8)
DISC TRAY
(Perform after removing the front panel.)
3
flat type wire (8 core)
4
two claws
2
Pull-out the disc tray.
5
Remove the disc tray.
Note: When installing the Disc tray, pull around the flat type wire to
pass through the claw
claw
A
A
and claw B, as shown in the figure.
claw
B
1
Turn the cam the
direction of arrow.
– 12 –
SECTION 4
TEST 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 p , [ENTER/NEXT], and I/u simulta-
neously.
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 I/u button to turn the set ON.
2. Press [CDLOOP] button and I/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 power
cord is plugged in and out.
Procedure:
1. Press three buttons p , [ENTER/NEXT], and [DISC1] simul-
taneously.
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. Press I/u button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons p , [ENTER/NEXT], and § simulta-
neously.
4. The Sled Servo mode is selected, if “CD” is blanking on the
fluorescent indicator tube.
5. With the CD in stop status, press ) + button to move the
pick-up to outside track, or – 0 button to inside track.
6. 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 3.
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 MW Tuner Step between 9 kHz and
10 kHz]
• A step of MW channels can be changed over between 9 kHz
and 10 kHz.
Procedure:
1. Press I/u button to turn the set ON.
2. Select the function “TUNER”, and press [TUNERBAND]
button to select the BAND “MW”.
3. Press I/u button to turn the set OFF.
4. Press [ENTER/NEXT] and I/u buttons simultaneously, and
the display of fluorescent indicator tube changes to “MW 9 k
STEP” or “MW 10 k STEP”, and thus the channel step is
changed over.
[LED and Fluorescent Indicator Tube All Lit, Key Check
Mode]
Procedure:
1. Press three buttons p , [ENTER/NEXT], and [DISC2] simul-
taneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press [DISC2] 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. However , once a button is pressed, it is no longer taken
into account.
“J” value increases like 1, 2, 3 ... if rotating [JOG] dial 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 man-
ner as step 1, or disconnect the power cord.
– 13 –
[Aging Mode]
This mode can be used for checking the operations of the CD player
and tape deck.
• When problems occur:
Aging stops. If currently aging the tape deck, the state when
aging stops will be displayed on the fluorescent display tube.
• When no problems:
Aging continues.
Preparations:
• Set the CD on the DISC 1 tray.
• Insert a commercially available tape for recording (tapes which
contents can be erased, etc.) in decks A and B.
Setting the aging mode:
Press the p button, [ENTER/NEXT] button, and
[DISCSKIP/EX-CHANGE] button together . When the aging mode
is set, the CD roulette work blinks. To exit the mode, press the
I/u button and turn OFF the power.
Sequence:
The aging mode is executed in the following sequence.
If the function is set to “CD” when the aging mode is set, aging is
performed starting from the CD player. When set to “TAPE A” or
“TAPE B” aging is started from deck A.
If the function is to others aging will not be stated until the function is switched to CD or TAPE.
Aging of CD player (12 minutes)
Operations during aging
• Operations are performed in the following sequence during aging.
<CD player>
1. The CD tray rotates and disc 1 is selected.
2. Chucking is performed.
3. TOC is read.
4. Track 1 played back for 8 seconds.
5. The CD tray opens and closes again.
6. 1 to 5 is repeated.
7. After 12 minutes of aging, aging is switched to the tape deck.
<Tape Deck>
1. The tape in deck A is rewound to the head.
2. The FWD side is played back for 2 minutes.
3. The tape is fast forwarded (FF) for 20 seconds. The following
procedure is performed when the tape end is reached before
the 20 seconds.
4. The REV side is played back for 2 minutes.
5. The tape is rewound to the head (REW).
6. The tape in deck B is rewound to the head.
7. The FWD side is played back for 2 minutes.
8. The tape is fast forwarded (FF) for 20 seconds. The following
procedure is performed when the tape end is reached before
the 20 seconds.
9. The REV side is played back for 2 minutes.
10. The tape is rewound to the head (REW).
11. Aging is switched to the CD player.
Aging of deck A
Aging of deck B
Maximum about 12 minutes
Display of status:
• The aging status is displayed on the fluorescent display tube.
(Only when executing the tape deck section.)
• During the aging of the tape deck, the operations performed
will be displayed. If operations ended abnormally, this will be
displayed at the fluorescent indicator tube.
Tape Deck
Display of Operations Operation Timing of Ending
T APE A AG-1 TAPE A REW Shutoff
T APE A AG-2 TAPE A FWD 2 minute playback
TAPE A AG-3 TAPE A FF 20 seconds or shutoff
T APE A AG-4 TAPE A REV 2 minutes playback
T APE A AG-5 TAPE A REW Shutoff
TAPE B AG-1 TAPE B REW Shutoff
TAPE B AG-2 TAPE B FWD 2 minute playback
TAPE B AG-3 TAPE B FF 20 seconds or shutoff
TAPE B AG-4 TAPE B REV 2 minute playback
TAPE B AG-5 TAPE B REW Shutoff
– 14 –
[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) and the sound signal can be observed at J101
(VIDEO/MD (AUDIO) OUT) using an oscilloscope.
Procedure:
1. Connect the lead wire to both ends of the land of SL503 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.
[VIDEO board] (Side A)
D502
SL501
[VIDEO board] (Side B)
SL503
CN503
SL502
SL501
SL503
SL502
IC502
IC505
CN501
– 15 –
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 Torqu Meter Meter Reading
FWD CQ-102C
FWD
Back Tension (0.02 – 0.08 oz•inch)
REV CQ-102RC
REV
Back Tension (0.02 – 0.08 oz•inch)
FF/REW CQ-201B
FWD tension CQ-403A
REV tension CQ-403R
CQ-102C
CQ-102RC
31 to 71 g•cm
(0.43 – 0.98 oz•inch)
2 to 6 g•cm
31 to 71 g•cm
(0.43 – 0.98 oz•inch)
2 to 6 g•cm
71 to 143 g•cm
(0.98 – 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=0.775 V
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 adjust.
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 RCH.
7. Switches and controls should be set as follows unless otherwise specified.
• Test Tape
Tape Signal Used for
P-4-A100 10 kHz, –10 dB Azimuth Adjustment
WS-48B 3 kHz, 0 dB Tape Speed Adjustment
P-4-L300 315 Hz, 0 dB Level Adjustment
Record/Playback Head Azimuth Adjustment
DECK A DECK B
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback (FWD)
test tape
P-4-A100
(10 kHz, –10 dB)
MAIN board
CN301
1
(L-CH)
Pin
Pin
3
(R-CH)
level meter
set
MAIN board
CN301
Pin
2
(GND)
+
–
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 1dB of peak.
Output
level
within
1dB
L-CH
peak
R-CH
peak
within
1dB
Screw
position
L-CH
peak
Screw
position
R-CH
peak
– 16 –
3. Mode: Playback (FWD)
(
)
test tape
P-4-A100
(10 kHz, –10 dB)
set
(pin
waveform of oscilloscope
in phase 45 °90 °135 °180
good
MAIN board
CN301
(pin
1
(pin 2: GND)
3
: R-CH)
: L-CH)
wrong
oscilloscope
H
V
°
Tape Speed Adjustment DECK B
Note: Start the Tape Speed adjustment as below after setting to the test
mode.
In the test mode, the tape speed is high during pressing the
[HI-DUB] button.
Procedure:
1. Turn the power switch on.
2. Press the p button, [ENTER/NEXT] button and [DISC3] button
simultaneously.
(The “VOLUME” on the fluorescent indicator tube will blink
while in the test mode.)
To exit from the test mode, press the I/u button.
Mode: Playback
test tape
WS-48B
(3 kHz, 0 dB)
set
frequency counter
+
–
4. Repeat setps 1 to 3 in playback (REV) mode.
5. After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location:Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
1
Remove the four claws
2
Window
MAIN board
CN301 (Pin
1
: L-CH)
Pin 3 : R-CH
1. Insert the WS-48B into the deck B.
2. Press the · button on the deck B.
3. Press the [HI-DUB] button in playback mode.
Then at HIGH speed mode.
4. Adjust RV1001 on the LEAF SW board do that frequency
counter reads 6,000 ± 180 Hz.
5. Press the [HI-DUB] button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the LEAF SW board so that frequency
counter reads 3,000 ± 90 Hz.
Adjustment Location: LEAF SW board
Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS)
(WS-48B)
Playback level Adjustment
DECK A DECK B
Procedure:
Mode: Playback
test tape
P-4-L300
(315 Hz, 0 dB)
set
level meter
+
–
MAIN board
CN301 (Pin
Reverse Foward
(Pin
1
3
: 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 adjustment
level as follows.
Adjustment Level:
CN301 PB 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
– 17 –
REC Bias Adjustment DECK B
r
r
Procedure:
INTRODUCTION
When set to the test mode performed in T ape 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.
(After recording, press the – 0 button without stopping will
return to the position where recording was started.)
1. Press [FUNCTION] button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press [REC] button, press P button, then recording
r
start.
4. Mode: Record
AF OSC
+
–
MD/VIDEO (AUDIO) IN
1) 315 Hz
2) 10 kHz
attenuator
+–+
50 mV (–23.8 dB)
600
Ω
–
set
blank tape
CN-123
4. Mode: Record
MD/VIDEO (AUDIO) IN
AF OSC
+
–
315 Hz, 50 mV (–23.8 dB)
600
attenuator
+–+
–
Ω
blank tape
CS-123
set
5. Mode: Playback
recorded
portion
set
MAIN board
CN301 (Pin
(Pin
level mete
1
: L-CH)
3
: R-CH)
+
–
6. Confirm playback the signal recorded in step 3 become adjustable level as follows.
If these levels do not adjustable level, adjustment the RV301
(L-CH) and R V351 (R-CH) on the MAIN board to repeat steps
4 and 5.
Adjustable level:
CN301 PB level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location: MAIN board
5. Mode: Playback
recorded
portion
set
MAIN board
CN301 (Pin
(Pin
level mete
1
: L-CH)
3
: R-CH)
+
–
6. Confirm playback the signal recorded in step 3 become adjustable level as follows.
If these levels do not adjustable level, adjustment the RV341
(L-CH) and RV441 (R-CH) on the AUDIO board to repeat
steps 4 and 5.
Adjustable level: Playback output of 315 Hz to playback output
of 10 kHz: ± 1.0 dB
Adjustment Location: AUDIO board
REC Level Adjustment DECK B
Procedure:
INTRODUCTION
When set to the test mode performed in T ape 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.
(After recording, press the – 0 button without stopping will
return to the position where recording was started.)
Adjustment Location:
[MAIN Board] (Component Side)
REC LEVEL
[AUDIO Board] (Component Side)
RV441
RV401
RV301
LR
PB LEVEL
– DECK B –
IC602
RV341
RL
REC BIAS
CN601
RV301
L
IC301
RV351
R
RV311
LR
PB LEVEL
– DECK A –
1 3
CN301
RV411
1. Press [FUNCTION] button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press [REC] button, press P button, then recording
start.
r
[LEAF SW Board] (Component Side)
TAPE SPEED
(NORMAL) (HIGH)
RV1002
RV1001
– 18 –
CN1001
CD SECTION
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
(with the 10: 1 probe
in use)
level: 1.3 Vp-p
+0.25
–0.20
+
–
BD board
TP (TE)
TP (VC)
oscilloscope
C (DC
voltage)
0 V
Tracking servo
Sled servo
OFF
Tracking servo
Sled servo
ON
Notes:
1. CD block basically constructed to operate without adjustment. Therefore, check each item in order given.
2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise indicated.
3. Use the oscilloscope with more than 10 MΩ impedance.
4. Clean an object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
S-Curve Check
Connection:
BD board
TP (FE)
TP (VC)
Procedure:
1. Connect the oscilloscope to TP (FE) and TP (VC) on BD board.
2. Connect between test point TP (FOK) and GND by lead wire.
3. Turned power switch on.
4. Put disc (YEDS-18) in and turned power switch on again and
actuate the focus search. (actuate the focus search when disc
table is moving in and out.)
5. Confirm that the oscilloscope waveform (S-curve) is symmetri-
cal between A and B. And confirm peak to peak level within
3.0 ± 1.0 Vp-p.
S-curve waveform
oscilloscope
+
–
symmetry
A
within 3.0 ± 1.0 Vp-p
B
RF signal waveform
When observing the eye pattern, set the oscilloscope for A C range
and raise vertical sensitivity.
E-F Balance (Traverse) check
Connection:
Procedure:
1. Short-circuit SL502 of the VIDEO board to GND.
2. Connect oscilloscope to test point TP (TE) on BD board.
3. Turned Power switch on. Press [FUNCTION] button to select
CD.
4. Put disc (YEDS-18) in to play the number five track.
5. Press the [PLAYMODE] button.
(The tracking servo and the sledding servo are turned OFF.)
6. Check the level B of the oscilloscope’s waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following:
A
× 100 = less than ± 22 (%)
B
6. After check, remove the lead wire connected in step 2.
Note: • Try to measure several times to make sure tha t 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
Connection:
oscilloscope
(AC range)
BD board
TP (RF)
TP (VC)
+
–
Procedure:
1. Connect the oscilloscope to TP (RF) and TP (VC) on BD board.
2. Turned power switch on.
3. Put disc (YEDS-18) in and press the fl button.
4. Confirm that the oscilloscope waveform is clear and check RF
signal level is correct or not.
Note: Clear RF signal waveform means that the shape “≈” can be clearly
distinguished at the center of the waveform.
Traverse waveform
Center of the waveform
B
0 V
level: 1.3 ± 0.6 Vp-p
A (DC
voltage)
7. Press the [PLAYMODE] button. (The tracking serv o and sledding servo are turned ON.) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 6.
Traverse waveform
8. Desolder the short-land (SL502) short-circuited at step 1.
– 19 –
Connection Location:
)
[BD Board] (Side A)
CN102
CN101
TP
(FOK)
IC101
TP
(TE)
IC103
TP (RF)
TP (VC
TP
(FE)
– 20 –
VIDEO SECTION
Frequency Adjustment
Connection:
VIDEO board
TP508 (27 MHz)
frequency counter
+
–
Procedure:
1. Connect the frequency counter to TP508 (27 MHz) on VIDEO
board.
2. Turned power switch on.
3. Press the [FUNCTION] button to select the CD.
4. Adjust CT503 on the VIDEO board so that the frequency
counter reading 27.0 MHz ± 80 Hz at stop status.
Adjustment Location:
[VIDEO Board] (Side A)
IC507
IC505
TP508
(27 MHz)
CT503
VIDEO
Frequency
Adjustment
– 21 –
HCD-V919AV
SECTION 7
DIAGRAMS
7-1. BLOCK DIAGRAM – SERVO Section –
FOCUS/TRACKING ERROR AMP
A
3
B
4
C
5
D
6
F
F I-V AMP
8
E
9
E I-V AMP
LD
1
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC102
OUT+
MOTOR
OUT–
DRIVE
OUT+
MOTOR
OUT–
DRIVE
OUT–
COIL
OUT+
DRIVE
OUT+
COIL
OUT–
DRIVE
OPTICAL PICK-UP
(KSS-213D/Q-NP)
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
05
DETECTOR
A
B
C
D
F
E
LASER DIODE
PD
I-V AMP
10
LD
(SPINDLE)
7
4
2
1
5
6
M101
(SLED)
M102
A+5V
AUTOMATIC
M
M
POWER
CONTROL
Q101
27
26
13
12
2
1
16
17
RF AMP,
IC103
RF
SUMMING
AMP
APC LD
AMP
IN+
IN–
IN–
IN+
IN–
IN+
MUTE
FOCUS
ERROR AMP
TRACKING
ERROR AMP
APC PD
AMP
IN+, IN–
23, 24
9
10
4
5
19
20
15
RF EQ
AMP
RFO
RFE
FE BIAS
LDON
100
10
IC104
6320
FILTER
32
34
33
MDP
MDS
97
31
FILO
DIGITAL PLL
VARI-PITCH
DOUBLE SPEED
PROTECTOR
TIMING
GENERATOR 1
28
LDON
A+5V
PCO
SYNC
SCOR
74
18
S101
(LIMIT)
WFCK
73
SCOR
1
CLTV
SENSE
3
FILI
TIMING
GENERATOR 2
DSP LATCH
DSP CLK
DSP DATA
4
5
EFM
DEMODULATOR
SYSTEM CONTROLLER
ADDRESS
GENERATOR
SUBCODE Q
PROCESSOR
SUBQ
SQCK
77
78
37
36
SUBQ CLK
IC501 (1/3)
DISC-SENS
TBL-SENS
OUT-OPEN
LOAD-OUT
REGISTER
32K
RAM
SUBQ DATA
CD MECHANISM
ENC1
ENC2
ENC3
LOAD-IN
TBL-L
TBL-R
PRIORITY
ENCODER
SUBCODE P – W
PROCESSOR
EXCK
76
D+5V
CONTROLLER
IC502 (1/2)
75
76
81
80
79
78
63
64
60
61
DIGITAL SIGNAL PROCESSOR
IC101 (1/2)
16
RF EQ
SWITCH
17
Q102, 103
FE
15
14
TE
13
19
PD
2
SFDR
SRDR
2
TFDR
4
TRDR
6
FFDR
8
FRDR
CTL1
CTL2
26
29
28
27
FE
TE
SE
RFDC
A/D
CONVERTER
PWM GENERATOR
FOCUS/TRACKING/SLED
SERVO DSP
FOCUS/TRACKING/SLED
SERVO
INTERFACE
COUT
89
RFAC
36
ASYI
38
ASYO
39
NOISE
SHAPER
DIGITAL SERVO
PROCESSOR
MIRR/DFCT/
FOK
DETECTOR
SERVO AUTO
SEQUENCER
CPU
INTERFACE
ASYMMETRY
CORRECTOR
IC101 (2/2)
MIX
18-TIMES
OVERSAMPLING
FILTER
CLV
PROCESSOR
MON
FSW
94
95
96
FOK
93
MIRR
91
DFCT
92
SENS
80
DATA
86
CLOK
88
XLAT
87
99
SSTP
62
XTAI
VCKI
XTAO
CLOCK
GENERATOR
INTERNAL BUS
SBSO
75
ERROR
CORRECTOR
PEAK
DETECTOR
DIGITAL
OUT
SCLK
83
2
SENSE CLK
LEVEL SHIFT
Q701
DISC TRAY SENSOR
(OPEN/CLOSE DET)
4
ROTARY
2
ENCODER
S811
3
DISC TRAY SLIDE MOTOR DRIVE
10
DISC TRAY TURN MOTOR DRIVE
IC801
FIN
MOTOR
RIN
DRIVE
2
IC701
IN1
3
MOTOR
IN2
DRIVE
6
D/A DIGITAL
PROCESSOR
MUTE
79
10
DISC SENSOR
IC702
S801
CLOSE
OPEN
DSP MUTE
IC703
OUT1
OUT2
OUT1
OUT2
PROCESSOR
SERIAL/PARALLEL
CTRL1
CTRL2
7
M
4
7
M
2
XTSL
64
DATA
46
BCLK
47
LRCK
45
GFS
54
RFCK
55
C2PO
56
DOUT
71
81
XRST
CTL1
11
CTL2
27
M801
(DISC TRAY SLIDE)
M701
(DISC TRAY TURN)
CTL1
DATA
BCK
LRCK
C2PO
TRANSCEIVER
MCLK
33.8MHz
DATA, BCK,
LRCK, C2PO
OPTICAL
IC391
• SIGNAL PATH
: CD PLAY
: DIGITAL OUT
(Page 25)
A
(Page 25)
B
CD DIGITAL OUT
OPTICAL
– 23 – – 24 –
RESET
C
(Page 26)
HCD-V919AV
7-2. BLOCK DIAGRAM – AUDIO/VIDEO CD Section –
MPEG VIDEO/AUDIO DECODER,
VIDEO SIGNAL PROCESSOR
IC505
DATA, BCK,
B
(Page 24)
LRCK, C2PO
DATA
BCK
LRCK
C2PO
LEVEL
SHIFT
IC501
CD-DATA
4
CD-BCK
3
CD-LRCK
5
CD-C2PO
6
ADDRESS BUS
CD-ROM
INTERFACE
CIRCUIT
MA0 – MA10
58 – 56, 54, 52 – 50, 48, 46 – 44 10 – 15, 17, 19, 21, 23 – 29
A0 – A10
MPEG
SYSTEM
DECODER
D-RAM/ROM INTERFACE
MD0 – MD15
MPEG
AUDIO
DECODER
MPEG
VIDEO
DECODER
D0 – D15
MCE
37
VIDEO
PROCESS
CIRCUIT
RAS0
MWE
38 42 40
AUDIO
INTERFACE
CIRCUIT
CAS
60
DA-DATA
DA-LRCK
DA-XCLK
PGIO2/VSYNC/CSYNC
CPU INTERFACE
HRDY
HSEL
HD-OUT
HINT
RESET
113
114 121
112
DA-BCK
Y-OUT
C-OUT
VCK-IN
HD-IN
119
117
HCK
(Page 24)
A
MCLK
33.8MHz
110
111
108
86
69
75
106
93
BUFFER
Q502
DATA
CLK
OSC
BUFFER
IC504
DATA
18
BCK
17
LRCK
19
768FSO
21
384FSO
20
MCKO
4
INPUT
INTERFACE
CIRCUIT
TIMING CONTROL/
CLOCK GENERATOR
XT2
X503
27MHz
XT1
DIGITAL FILTER,
D/A CONVERTER
DIGITAL
FILTER,
NOISE
SHAPER
CIRCUIT
IC509
D/A
CONVERTER
MODE
CONTROL
MC
MD
9 724 1
8
(Page 29)
R-CH
CD-L
• SIGNAL PATH
E
VOUTL
LOW-PASS
FILER
ML
RSTB
10
VOUTR
14
11
LOW-PASS
FILER
IC101
: CD PLAY (AUDIO)
: CD PLAY (VIDEO)
16 – 19, 22 – 26
D-RAM
IC507
(Page 30)
D
F
(Page 29)
A0 – A8
A0 – A8
RESET
DATA, CLK
05
UCAS
LCAS
14 132928
RAS
DQ1 – DQ16
WE
D0 – D15
DATA BUS
PROGRAM ROM
A0 – A10
12 – 5, 27, 26, 23
A0 – A10
IC506
X401
8MHz
FORMER TYPE
BUS
45
D0 – D7
13 – 15, 17 – 212 – 5, 7 – 10, 31 – 34, 36 – 39
O0 – O7
XIN
19
XOUT
20
12C.DATA
14 13
DATA
12C.CLK
CLK
D8 – D14
25, 4, 28, 29, 3, 2, 30
A11 – A17
22
EXPANSION
IC402
RESET
CLK1
33
DATA1O
31
32
DATA1I
CL680 SEL
CE
S501
SYSTEM SELECT
NTSC
AUTO
PAL
D502
RXD
UTAU
TXD
UTAI
10918
1112
NEW TYPE
(SELF DIAGNOSIS)
DATA
CLK
21
20
CL680 HINT
CL680 HRDY
23
24
CL680 RESET
CD MECHANISM CONTROLLER
93
NT/PAL
TEST LED
73
72
UTOI
19
ITOU
29
RXD
30
TXD
12
XRESET
29
CLK
DATA
30
DEVICE RESET
IC502 (2/2)
SHARPNESS
XIN
DF LATCH
VMUTE
XOUT
1315
22
77
VIDEO
BUFFER
Q303
B.P.F.
B.P.F.
34
65
VIDEO
BUFFER
Q301
VIDEO
BUFFER
Q304
SHARPNESS
CONTROL SWITCH
Q306
SHARPNESS
FILTER
Q302
VIDEO
BUFFER
Q307
VIDEO
BUFFER
Q308
Y/C MIX
Q310
RESET
VIDEO AMP
IC401 (1/2)
VIDEO AMP
IC401 (2/2)
(Page 24)
C
13
S VIDEO OUT
C
Y
VIDEO
MUTE
Q453
75
VIDEO
MUTE
J301
Q454
1
3
4
2
J302
VIDEO OUT
– 25 –
X501
10MHz
– 26 –
HCD-V919AV
7-3. BLOCK DIAGRAM – TAPE DECK Section –
HP101
(PLAYBACK)
L-CH
R-CH R-CH
HRPE101 (1/2)
(RECORD/PLAYBACK)
L-CH
R-CH R-CH
3
R-CH
PB EQ AMP
(DECK A)
IC611
PB EQ AMP
(DECK B)
IC601
REC/PB SWITCHING
IC602
1
R-CH
RV311
PB LEVEL (L)
(DECK A)
RV301
PB LEVEL (L)
(DECK B)
4
DECK PROCESS
DECK A/B SELECT, PB/REC EQ AMP,
DOLBY NR AMP, ALC, AMS
AIN (L)
48
BIN (L)
46
BIAS (N)
33
BIAS (C)
32
31
S1004
(DECK A 120/70)
S1008
(DECK B 120/70)
BIAS (M)
CONTROL
B NORM/CROM
A 120/70
19
IC301
BIAS
CIRCUIT
ALC ON/OFF
PB A/B
1516182022 23242517
70
120
BIAS ON/OFF
NORM/HIGH
RM ON/OFF
R-CH
NR ON/OFF
REC/PB/PASS
LM ON/OFF
+
L.P.F.
BUFFER
28
27
AMS
CIRCUIT
26
MAOUT
MSIN
MSOUT
RIN (L)
43
ALC (L)
44
DOLBY PASS
ROUT (L)
ALC
35 34
DOLBY NR
AMP
CIRCUIT
ALC
IN (L)
REC OUT (L)
39
RV301
REC LEVEL (L)
(DECK B)
EQ IN (L)
38
REC
EQ AMP
PB OUT (L)
EQ OUT
• SIGNAL PATH
: PLAYBACK (DECK A)
40
(L)
36
PB-L
REC-L
G
(Page 29)
H
(Page 30)
: PLAYBACK (DECK B)
: RECORD
RV441
REC BIAS (R)
(DECK B)
HRPE101 (2/2)
(ERASE)
R-CH
2
RV341
REC BIAS (L)
(DECK B)
BIAS OSC
T621
BIAS OSC
Q621, 622
REC BIAS
SWITCH
Q623
05
C331, L331
BIAS
TRAP
B+
(A+7V)
97
TC-RELAY
A-PLAY-SW
95 96
S1001
(DECK A PLAY)
9994939290 898887
BIAS
PB-A/B
EQ-H/N
REC-MUTE
ALC-ON/OFF
S1002
(DECK B PLAY)
NR-ON/OFF
B-PLAY-SW
S1003
(DECK A HALF)
TC-MUTE
R/P-PASS
31
AMS-IN
A-HALF
98
ROTATION
DETECT SENSOR
(DECK A)
IC1001
S1006
(DECK B HALF)
S1009
(DECK B REC)
26
A-SHUT
B-HALF
28
ROTATION
DETECT SENSOR
(DECK B)
IC1002
27
B-SHUT
S1005
(DECK A REC)
SL1
TRIGGER PLUNGER
DECK A
TRIGGER
PLUNGER DRIVE
(DECK A)
Q333, 334
84
SYSTEM CONTROLLER
IC501 (2/3)
A-TRG
SL2
TRIGGER PLUNGER
DECK B
TRIGGER
PLUNGER DRIVE
(DECK B)
Q331, 332
83
B-TRG
Q335
82
CAP-M-H/L
RV1001
TAPE SPEED
(HIGH)
CAPM-CNT1P
CAPM-CNT2P
CAPM-CNT1M
CAPM-CNT2M
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
17
77
85
86
RV1002
TAPE SPEED
(NORMAL)
CAPSTAN
MOTOR DRIVE
Q336 – 339
CAPSTAN
MOTOR DRIVE
Q340 – 343
M
M1
(CAPSTAN)
– 27 –
– 28 –
7-4. BLOCK DIAGRAM – MAIN Section (1/2) –
J750
MIC 2
J751
MIC 1
MIC AMP
IC750 (1/2)
RV750
MIC LEVEL
DIGITAL ECHO
IC751
RV751
ECHO LEVEL
MIC AMP
IC750 (2/2)
(Page 33)
I
DJ SIG
+
BUFFER
IC411
R-CH
+
LINE AMP
IC191
MUTING
Q191
REC-L
R-CH
(Page 28)
H
L
R
SUPER WOOFER
J101 (2/2)
MD OUT
J191
HCD-V919AV
• SIGNAL PATH
: CD PLAY
: TAPE PLAY
: RECORD
: TUNER (FM/AM)
: MIC INPUT
(Page 26)
(Page 28)
MD IN
VIDEO
(AUDIO) IN
(Page 25)
(Page 33)
(Page 34)
(Page 34)
(Page 32)
(Page 32)
(Page 32)
E
G
FM 75Ω
AM
F
P
Q
R
S
T
U
CD-L
PB-L
J101 (1/2)
L
R
L
R
ANTENNA
DATA, CLK
DATA, CLK
POWER
CD-POWER
STK-MUTE
F-RELAY
PL-RELAY
R-CH
R-CH
FM/AM TUNER UNIT
FM ANT
FM ANT
AM ANT
AM ANT
ST-MUTE
ST-DOUT
DATA
CLK
ST-L
ST-R
STEREO
TUNED
ST-DIN
ST-CLK
ST-CE
55
56
5
46
100
6
8
05
R-CH
68
65
ST-CE
IIC-DATA
IIC-CLK
POWER
CD-POWER
STK-MUTE
F-RELAY
PL-RELAY
66
ST-DIN
ST-CLK
67
ST-DOUT
IN B2
68
IN C2
67
IN A2
69
IN F2
64
IN D2
66
R-CH
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
69
72
70
TUNED
STEREO
ST-MUTE
INPUT SELECT
IC111
LT-IN
61
RT-IN
62
DELAY OUT
OSC
46
X201
8MHz
SOUND
CONTROL
CIRCUIT
L-OUT
R-OUT
S-OUT
C-OUT
47
10
X2
OSC
X501
5MHz
VOLUME
COMMAND
CPU
INTERFACE
DATA
CLOCK
32 34
33
52 51
M62442-DATA
40
VOL OUT2
LATCH
3
M62442-CLK
M62442-LATCH
R-CH
BASS BOOST
CONTROL
CIRCUIT
BB B2,
BB A2
38, 39
DBFB CONTROL
SWITCH
Q111
2 16 15
DBFB-H/L
BUF
OUT2
36
FEED BACK SWITCH
Q112
R-CH
MUTING
Q292
MUTING
Q291
MUTING
Q113
R-CH
MUTING CONTROL
Q141, 143
1
SWITCH
LINE-MUTE
LINE AMP
IC291 (1/2)
LINE AMP
IC291 (2/2)
AC-CUT
FEED BACK
CENTER
+5V
RESET SIGNAL
GENERATOR
IC951
RESET
SWITCH
Q951
RESET
XRST
57
L-CH
SPEANA
REAR
RESET
RESET
J
K
L
M
N
O
D
(Page 31)
(Page 31)
(Page 33)
(Page 31)
(Page 31)
(Page 33)
(Page 25)
KEY IN2
60
KEY IN1
KEY OUT
5
75 59 6
DOUT2
DOUT1
2
MIC IN
+
+
REC
58
A2
EQUALIZER
R-CH
GRAPHIC
CONTROL
CIRCUIT
REC
B2
57
F OUT2
VOL
42
IN2
41
CONTROL
+
SPEANA
MIXING AMP
IC401
12
11
17
10
9
14
15
16
+
X502
32.768kHz
11
13
X1
XT2
L-IN
R-IN
S-IN
14
XT1
L-OUT
R-OUT
S-OUT
50 49 42 41
24
21
39
PL-CLK
PL-DATA
PL-LAT
PL-VOL
38
18
51
53
50
54
52
49
S-VOL
IN
C-VOL
IN
DATA
DATA
CLK
CLK
ENABLE
ENABLE2
DOLBY SURROUND
PRO LOGIC PROCESSOR
IC201
S-VOL
36
OUT
C-VOL
27
OUT
SYSTEM CONTROLLER
IC501 (3/3)
S-OP
S-OP
35
IN
C-OP
28
IN
OUT
C-OP
OUT
33
31
– 29 –
– 30 –
HCD-V919AV
7-5. BLOCK DIAGRAM – MAIN Section (2/2) –
J755
PHONES
(Page 30)
(Page 30)
(Page 30)
-1
+
L
–
TM401
FRONT SPEAKER
IMPEDANCE USE 6 – 16Ω
-2
+
R
–
D406
D405
D407
D408
FAN MOTOR
DRIVE
Q961, 962
TM402
M901
M
(FAN)
8
12
D311
15
TEMPERATURE
DETECT SWITCH
Q321, 322
+
OVER LOAD
DETECT
Q201, 251
DC DETECT
SWITCH
Q306, 307
L-CH
J
FEED BACK
K
R-CH
3
20
THP321
POWER AMP
IC201 (1/2)
POWER AMP
IC201 (2/2)
+
L
REAR
M
18
POWER AMP
IC601 (1/2)
13
-1
–
+
SURROUND SPEAKER
IMPEDANCE USE 16Ω
R
REAR
–
Q302
RY403
-2
+
SURROUND SPEAKER
CENTER
IMPEDANCE USE 8 – 16Ω
–
F-RELAY
PL-RELAY
STK-MUTE
T
U
S
(Page 29)
(Page 29)
(Page 29)
RY401
RELAY DRIVE
Q401, 402
RELAY DRIVE
Q404 – 406
STANDBY
SWITCH
Q142
(Page 30)
05
CENTER
N
D332
D331
1
POWER AMP
IC601 (2/2)
18
OVER LOAD
DETECT
Q601, 651
OVER LOAD
DETECT SWITCH
Q604
D604
D321
OVER LOAD
DETECT SWITCH
Q301, 303
MUTE SWITCH
Q304, 305
PROTECTOR
• SIGNAL PATH
: TUNER (FM/AM)
– 31 –
– 32 –
7-6. BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –
HCD-V919AV
P
(Page 29)
O
(Page 30)
L
(Page 30)
I
(Page 29)
05
54 – 69, 72 – 70, 77 – 73
SEG1 – SEG24
DATA,
CLK
RESET
SPEANA
DJ SIG
DATA
CLK
FLUORESCENT INDICATOR TUBE
SDA
2324
18
12C DATA
DJ MUTE
Q411
ND601
GRID DRIVE
SCL
RESET
BAND-PASS FILTER
4
RESET
12C CLK
MUTE
5
DJ MUTE
CONTROL SWITCH
Q851
Q701
53
GR13
LINE IN
IC603
42 – 52
GR2 – GR12
F01
17
F02
16
15
F03
14
F04
13
L+R
GRID DRIVE
Q702
CLK
DATA
15
15SI14
SD
AOUT
23
D610, 612, 620 – 628,
D631 – 633, 640 – 644,
D651, 652, 655, 656
41
GR1
SPEANA-1
SPEANA-3
SPEANA-2
36
37
34
35
33
36
BPF/LOW
LAT
CH
16 13 12
8 16 17 20
ST
CH
CSV
IC851
LED1– LED8, LED12 – LED15
L+R
SPEANA-4
32
ENCODER
D804
D807
BEAT ON/OFF
BEAT JAM
3719104
L+R
BPF/HIGH
LED DRIVE, KEY CONTROL
BSY
RST
11
XT
RST
BUSY
XT
D613 – 618,
D629, 630
LED DRIVE
Q604, 607 – 611,
Q613 – 615, 618,
Q856, 857
79, 80, 1 – 6, 15 – 18
FLUORESCENT INDICATOR TUBE DRIVE,
LED DRIVE, KEY CONTROL
IC601
VOL-A
VOL-B
19
20
ROTARY
S602
S602
VOLUME
TIME CONSTANT
SWITCH
Q958
D801
D802
CSV CONTROL,
IC801
2
4.09MHz
3
X851
KEY-0 – KEY-3
26 – 29
S604 – 619, 621 – 642,
S652 – 654, 656 – 659
Q959
Q960
D805
63
BOMBER-LED
KEY0, KEY1
38, 39
S801 – 808
11, 12, 14
LED9 – LED11
+5V
D806
64
ON/OFF-LED
REMOTE CONTROL
RECEIVER
IC602
(JOG DIAL)
= ↔ +
Q959, 960
SPEANA MUTE
SWITCH
LED DRIVE
ROTARY
ENCODER
S601
S601
DJ MIX
BPM-LED-A
62
Q854
(GREEN)
B+ SWITCH
Q601, 602
Q603
25
L.SEL
SIRCS
JOG-A
33
21
29
27
JOG A
SIRCS
BPM-LED-B
6114
LED DRIVE
Q855
(ORANGE)
22
28
X-OUT
JOG-B
X-OUT
JOG B
LED +5.6V
X-IN
X-IN
AUTO BPM
8
9
2
3
D803
X601
8MHz
X501
8MHz
+3.3V
MPEG VIDEO/AUDIO
DECODER (IC505) B+
D+5V (UNSW)
VIDEO CD SECTION B+
D+5V (SW)
VIDEO CD SECTION B+
+5V
VIDEO CD SECTION B+
AUDIO D+5V
D+5V
(PANEL SECTION B+)
SYSTEM CONTROLLER
(IC501) B+
Q937
A+7V
(TC, AUDIO SECTION B+)
A–7V
(TC, AUDIO SECTION B–)
Q905
CAPSTAN MOTOR DRIVE CIRCUIT,
TRIGGER PLUNGER DRIVE CIRCUIT B+
Q912
FAN MOTOR B–
+12V
ST+10V
FM/AM TUNER UNIT,
DOLBY SURROUND
PRO LOGIC (IC201) B+
REGULATOR
SWITCH
Q935, 936
B+
SWITCH
Q931, 932
B+
SWITCH
Q933, 934
D602, 603
D956
POWER AMP (IC201, 601) B+
POWER AMP (IC201) B–
+3.3V
Q531
LED +5.6V
+7V
TO
(ND601)
RELAY DRIVE
+5V
REGULATOR
IC932
REGULATOR
REGULATOR
REGULATOR
REGULATOR
Q911, 913
REGULATOR
Q101
B+
D932
(CD M+7V)
B+
SWITCH
Q901, 902
B–
SWITCH
Q903, 904
+12V
REGULATOR
IC911
+10V
REGULATOR
IC921
–35V
FL DRIVER (IC601)
FLUORESCENT INDICATOR TUBE
A+7V
POWER
CD-POWER
+5.6V
IC931
+7V
IC941
+7V
IC901
–7V
IC902
B+
SWITCH
–35V
Q111
RECT
D101
RY101
Q
R
VF1
VF2
(Except Chinese model)
(Page 29)
(Page 29)
RECT
D102
RECT
D103, 104
RECT
D111, 112
(Chinese model)
POWER TRANSFORMER
T501
(Malaysia, Singapore, Indonesia models)
Except Malaysia, Singapore,
Indonesia models
VOLTAGE
SELECT SWITCH
S501
S501
VOLTAGE
SELECTOR
AC IN
– 33 –
– 34 –
• Circuit Boards Location
d
)
d
7-7. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
LEAF SW board
AUDIO board
CONT-PANEL board
POWER AMP board
TRANSFORMER board
DECORATION board
MIC board
VIDEO board
SURROUND boar
MAIN board
CD-SW board
TUNER(FM/AM
Note on Schematic Diagrams:
• 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 1/
specified.
¢
•
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are taken with a VOM (Input
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
• Abbreviation
: internal component.
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
Voltage variations may be noted due to normal production tolerances.
F : TUNER (FM/AM)
E : PLAYBACK (DECK A)
d : PLAYBACK (DECK B)
G : RECORD
J : CD PLAY (AUDIO)
L : CD PLAY (VIDEO)
c : DIGITAL OUT
N : MIC INPUT
CH : Chinese model.
IA : Indonesia model.
MY : Malaysia model.
SP : Singapore model.
TH : Thai model.
4
W or less unless otherwise
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• p : parts mounted on the conductor side.
®
•
• 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
(Side B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
• Indication of transistor.
: Through hole.
C
Q
B
E
Q
B
CE
These are omitted.
These are omitted.
SENSOR board
CONNECTOR board
MOTOR (TURN) board
PANEL board
BD board
MOTOR (SLIDE) boar
HEADPHONE board
– 35 –
– 36 –
7-8. PRINTED WIRING BOARDS – BD Section – • See page 35 for Circuit Boards Location.
HCD-V919AV
– 37 –
(Page 42)
• Semiconductor
Location
Ref. No. Location
IC101 E-4
IC102 C-10
IC103 E-2
IC104 F-9
Q101 E-12
Q102 C-2
Q103 C-2
– 38 –
HCD-V919AV
7-9. SCHEMATIC DIAGRAM – BD Section – • See page 86 for Waveforms. • See page 90 and 91 for IC Block Diagrams.
(Page 43)
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
• V oltages and w av eforms are dc with respect to ground in
CD play mode.
no mark : CD stop
( ) : CD play
– 39 –
– 40 –
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