Sony HCD-V909AV User manual

— 1 —
SERVICE MANUAL
MICROFILM
HCD-V909AV is the tuner, deck, Video CD and
amplifier section in MHC-V909AV.
Model Name Using Similar Mechanism HCD-V800
CD Mechanism Type CDM38L-5BD21AL
Base Unit Type BU-5BD21AL
Optical Pick-up Type KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-V800
Tape Transport Mechanism Type TCM-220WR2
CD
SECTION
SPECIFICATIONS
E Model
Chinese Model
TAPE
DECK
SECTION
HCD-V909AV
COMPACT DISC DECK RECEIVER
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MODEL IDENTIFICATION
— BACK PANEL —
MODEL PARTS No.
4-991-746-4
4-991-746-9
4-991-753-0
4-991-753-1
4-991-753-2
• Abbreviation
SP : Singapore model
MY : Malaysia model
IA : Indonesian model
CH : Chinese model
TH : Thai model
MY model
TH model
E, SP model
CH model
IA model
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation 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.
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 PROD-
UCT MARKING is located on
the rear exterior.
This caution
label is located
inside the unit.
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
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
NOTES ON HANDLINGTHE 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
repain 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, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carryoutthe“Scurve check” in“CD section adjustment”and check
that the S curve waveform is output three times.
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TABLE OF CONTENTS
1. SERVICING NOTE .......................................................... 3
2. GENERAL .......................................................................... 6
3. DISASSEMBLY
3-1. Back Panel ........................................................................... 7
3-2. Loading Panel ....................................................................... 8
3-3. CD Mechanism Deck ............................................................ 8
3-4. Front Panel ........................................................................... 9
3-5. TC Mechanism Deck and DECO Board ............................... 9
3-6. HP/MIC Board, Display Board and TC SW Board ............ 10
3-7. Disc Tray ........................................................................... 10
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 —............................. 29
7-4. Schematic Diagram — CD Section — ...............................31
7-5. Schematic Diagram — Video Section — ........................... 33
7-6. Printed Wiring Board — Video Section —......................... 37
7-7. Printed Wiring Board — Main Section —.......................... 40
7-8. Schematic Diagram — Main Section — ............................ 43
7-9. Schematic Diagram — Deck Section — ............................ 47
7-10. Printed Wiring Board — Deck Section — ....................... 51
7-11. Schematic Diagram — Panel Section — ......................... 54
7-12. Printed Wiring Board — Panel Section —....................... 57
7-13. Schematic Diagram — Power Section — ........................ 61
7-14. Printed Wiring Board — Power Section — ..................... 65
7-15. Schematic Diagram — CD Motor Section —.................. 68
7-16. Printed Wiring Board — CD Motor Section — ............... 69
7-17. Schematic Diagram — KEY CON Section —................. 71
7-18. Printed Wiring Board — KEY CON Section — .............. 72
7-19. IC Block Diagrams ........................................................... 73
7-20. IC Pin Functions ............................................................... 80
8. EXPLODED VIEWS
8-1. Case Section........................................................................ 97
8-2. Main Board Section ............................................................ 98
8-3. Panel Board Section ............................................................ 99
8-4. Front Panel Section ...........................................................100
8-5. TC Mechanism Section 1 (TCM-220WR2)...................... 101
8-6. TC Mechanism Section 2 (TCM-220WR2)...................... 102
8-7. CD Mechanism Section 1 (CDM38L-5BD29AL) ............ 103
8-8. CD Mechanism Section 2 (CDM38L-5BD29AL) ............ 104
8-9. Base Unit Section (BU-5BD29AL) .................................. 105
9. ELECTRICAL PARTS LIST ...................................... 106
SECTION 1
SERVICING NOTE
HOW TO OPENTHE DISC TRAY WHEN POWER SWITCH
TURNS OFF
1 Remove the Case.
2 Remove the Back panel.
4 Pull-out the disc tray.
3 Turn the cam to the
direction of arrow.
Note for Installation (ROTARY ENCODER)
BU cam
groove Section A
Note : When attaching the Base unit. insert the
section A into the groove of BU cam.
Note : When attaching the
BU cam, engage the
Rotary encoder switch
as shown in the figure.
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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 NEXT , ENTER/NEXT , 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 POWER button to turn the set ON.
2. Press PLAY MODE buttonand POWER 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 NEXT , ENTER/NEXT , 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 NEXT , ENTER/NEXT , and FUNC-
TION 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 0button 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 toVIDEO or MD. With the FUNCTION selected to “MD”,
about 5dB mute is applied to the input gain.
Procedure:
1. Press POWER button to turn the set OFF.
2. Press POWER 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 AMTuner Step between 9kHz and 10kHz
• A step of AM channels can be changed over between 9kHz and
10kHz.
Procedure:
1. Press POWER button to turn the set ON.
2. Select the function “TUNER”, and press TUNER/BAND but-
ton to select the BAND “AM” or “MW”.
3. Press POWER button to turn the set OFF.
4. Press ENTER/NEXT and POWER buttons simultaneously,
and the display of fluorescent indicator tube changes to “9k
STEP” or “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 NEXT , ENTER/NEXT , 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 1V0 J0”. 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 knob in “+”
direction, or it decreases like 0, 9, 8 ... if rotating in “–” direc-
tion.
“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.
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 2 trays.
2. Select the function “CD”.
3. Press three buttons NEXT , ENTER/NEXT , and
KARAOKE PON/MPX simultaneously.
4. The aging mode is activated, if a roulette mark on the fluo-
rescent 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 POWER 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 Sec-
tion”.
1-2. Operation during aging Mode
In the aging mode, the program is executed in the following se-
quence.
1. The disc table is ejected.
2. The disc tray turns to select a disc. (For a disc selection se-
quence, see Section 1-3.)
3. TOC of disc is read.
4. The pick-up accesses to the last track.
5. Disc table is ejected.
6. Steps 2 through 5 are repeated.
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— 5 —
SELF-DIAGNOSIS
This model has the self-diagnosis function for the VIDEO and
AUDIO decoder sections.
Immediatelyafter the power on, the self-diagnosis function searches
each operation of IC’s around the mechanism control microcom-
puter (IC701).
The results can be checked by connecting an oscilloscope toTP709
(LED) of theVIDEO board.
Oscilloscope (Waveform) Symptom
1-3. Disc Selection Sequence
•During the aging mode, discs are selected in the following se-
quence: Disc 1 →Disc 2
↑↓
Disc 2 ←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 0button respec-
tively on decks A and B.
4. Press three buttons NEXT , ENTER/NEXT , and
KARAOKE PON/MPX simultaneously.
5. Press ·button on deckA. (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 POWER button to turn
the set OFF.
2-2. Operation during Aging Mode
In the aging mode, the program is executed in the following se-
quence.
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. In this case, ·
LED does not light up.)
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. In this case, ª
LED does not light up.)
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 se-
quence: Deck A (FWD) →Deck A (REV)
↑↓
Deck B (REV) ←Deck B (FWD)
H
L
1 time blinking
H
L
2 time blinking
H
L
Light
H
L
3 time blinkin
g
No error
MPEG decoder (IC201)
error
DRAM (IC251) error
External SRAM (IC751)
error
oscilloscop
e
VIDEO board
TP709 (LED) +
–
Note: The LED for check (D701) is mounted to some sets
(FORMER TYPE). In this case, confirm the lighting condi-
tion of LED.
[VIDEO BOARD] (SIDE A)
D701
IC771
X901
TP709 (LED)
IC751 IC251
[VIDEO BOARD] (SIDE B)
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— 6 —
SECTION 2
GENERAL
Front Panel
23 456 71
8 9 10 11 12 13 14 15 16 17 18 19 20 21
22
23
24
252627282930313233343536373839
51 52 53 54 55 56 57 58
59
60
61
62
40
41
42
43
44
45
46
47
48
49
50
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LOCATION OF PARTS AND CONTROLS
1 POWER button
2 DISC SKIP EX-CHANGE button
3 CD 0, )button
4 DISC1-DISC3 buttons
5 CD pbutton
6§OPEN/CLOSE button
7 CD ·∏ button
8 VCD indicator
9 PREV button
10 DISPLAY/DEMO button
11 NEXT button
12 DIRECTION button
13 RETURN button
14 1/ALL DISCS button
15 SELECT button
16 PLAY MODE button
17 LOW FREQUENCY button
18 JOG dial, indicator
19 HIGH FREQUENCY button
20 KARAOKE PON/MPX button
21 VOLUME control
22 FUNCTION button
23 TUNER MEMORY button
24 TUNER/BAND button
25 STEREO/MONO button
26 TUNING MODE button
27 EFFECT ON/OFF button
28 DBFB button
29 DSP button
30 ENTER/NEXT button
31 PROLOGIC button
32 GROOVE button
33 GAME button
34 FLASH button
35 MOVIE button
36 ECHO LEVEL knob
37 LOOP button
38 MIC LEVEL knob
39 MIX MIC jack
40 PHONES jack
41 WAVE button
42 NON-STOP button
43 MUSIC button
44 P FILE button
45 P FILE MEMORY button
46 SLEEP button
47 CLOCK/TIMER SET button
48 AUTO PBC indicator
49 PBC indicator
50 TIMER SELECT button
51 Deck A ª, ·button
52 Deck A 0, )button
53 HIGH SPEED DUBBING button
54 CD SYNCHRO button
55 rREC button
56 P(PAUSE) button
57 Deck B 0, )button
58 Deck B ª, ·button
59 Deck B pbutton
60 Deck B 6button
61 Deck A 6button
62 Deck A pbutton
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
3-1. BACK PANEL
1 Three screws
(+BVTP3x8)
2 Four screws
(+BVTP3x8)
3 Three screws
(+BVTP3x8)
4 Four screws
(+BVTP3x8)
8 Back panel
7 Connector
(CN961)
6 Flat type wire
(15 core)
5 Connector (CN9001)
Wire clamp
Ferrite core
Bushing cord
Power transformer
Installing the power cord for the
Chinese model.
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— 8 —
3-2. LOADING PANEL
3-3. CD MECHANISM DECK
1 Turn the cam to the direction of arrow
Two claws
3 Loading panel
2 Pull-out the
disc tray.
7 CD mechanism dec
k
6 Connector
(CN901)
1 Flat type wire (13 core)
5 Screw
(+BVTP3x8)
4 Screw
(+BVTP3x8)
3 Connector
(CN820)
2 Connector
(CN830)
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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— 9 —
3-4. FRONT PANEL
1 Connector
(CN402)
4 Two screws
(+BVTT3x6)
Two claws
3 Connector
(CN701)
2 Connector
(CN401)
6 Front panel assembly
5 Three screws
(+BVTT3x6)
3-5.TC MECHANISM DECK AND DECO BOARD
5 Button (EJECT)
9 Flat type wire (5 core)
8 DECO board
Claws
3 TC mechanism deck
2 Three screws
(+BVTP2.6x8)
4 Button (EJECT)
7 Cassette lid (B) assembly
6 Cassette lid (A)
assembly
1 Push the buttons (EJECT) 4 and 5 .
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— 10 —
3-6. HP/MIC BOARD, DISPLAY BOARD AND TC SW BOARD
!¢ Seven screws
(+BVTP2.6x8)
!§ TC SW boar
d
!¶ Connector
(CN607)
!∞ Two claws
!™ Claw
!¡ Two claws
4 Knob (Vol)
5 Nut
0 Two claws
9 Two claws
3 HP/MIC board
2 Bracket (HP)
1 Two screws
(+BVTP2.6x8)
!£ Display board
6 Flat type wire (10 core)
7 Seven screws
(+BVTP2.6x8)
8 Nine screws
(+BVTP2.6x8)
3-7. DISC TRAY
(Perform after removing the front panel.)
3 Flat type wire (8 core)
4 Push the claws
2 Pull-out the disc tray.
5 Remove the disc tray.
1 Turn the cam to the
direction of arrow.
Claw
A
Claw B
Note: When installing the Disc tray, pull around the flat type wire to
pass through the claw
A and claw B , as shown in the figure.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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— 11 —
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 observedat J9001 (VIDEO
OUT) and the sound signal can be observed at J101 (VIDEO/MD
(AUDIO) 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 ELECTRICALADJUSTMENTS page 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 fluores-
cent 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 button, 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)
SL703 (AFADJ)
IC751 IC251
SL702 (ADJ)
SL701 (CAL BAR)
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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— 12 —
SECTION 5
MECHANICAL 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 demagne-
tizer.
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 sup-
ply voltage unless otherwise noted.
Torque Measurement
2 to 6 g • cm
(0.02 - 0.08 oz • inch)
36 to 61 g • cm
(0.5 - 0.84 oz • inch)
Torque Torque meter
FWD
FWD
back tension
REV
FF/REW
REV
back tension
FWD tension
REV tension
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
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)
Meter reading
SECTION 6
ELECTRICAL ADJUSTMENTS
DECK SECTION 0 dB=0.775V
1. Demagnetizethe record/playback headwith ahead 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 sup-
ply 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 adjust-
ment.)
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 Used for
Tape
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
NOTE:
Set the test mode by following step before performing the adjust-
ment of “DECK SECTION”. All effects for the output signal are
canceled. If the adjustment is not performed in this test mode, you
cannot adjust correctly.
Procedure :
With the power turned ON, press the NEXT button, ENTER/
NEXT button, and EFFECT ON/OFF button simultaneously.
(The “VOLUME” on the fluorescent display tube will blink while
in the test mode.)
To exit the test mode, press the POWER button.
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)
VIDEO/MD
(AUDIO) OUT
level meter
set +
–
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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— 13 —
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location: Playback Head (Deck A)
Record/Playback/Erase Head (Deck B)
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.
3. Mode: Playback
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 while
the HIGH SPEED DUBBING button is pressed.
Procedure :
With the power turned ON, press the NEXT button, ENTER/
NEXT button, and EFFECT ON/OFF button simultaneously.
(The “VOLUME” on the fluorescent display tube will blink while
in the test mode.)
To exit the test mode, press the POWER button.
1. Load WS-48B into deck A and a recordable tape into deck B.
2. Press the rREC button, and press the ·button of deck B to
set deck B into the recording state.
3. Play deck A.
4. Whilepressingthe HIGH SPEED DUBBING button, set double
speed play.
5. Adjust RV652 of the AUDIO board so that the reading of the
frequency counter becomes 6000 ± 90 Hz.
6. Release the HIGH SPEED DUBBING button to set normal
speed play.
7. Adjust RV651 of the AUDIO board so that the reading of the
frequency counter becomes 3000 ± 90 Hz.
Adjustment Location: AUDIO board
SampleValue of Wow and flutter
W.RMS (JIS) less than 0.3%
(test tape: WS-48B)
Playback Level Adjustment (Deck A, Deck B)
Procedure:
L-CH
peak
R-CH
peak
screw
position
output
level within
1 dB
L-CH
peak R-CH peak
screw
position
within 1dB
test tape
P-4-A100
(10kHz, –10dB) VIDEO/MD
(AUDIO) OUT oscilloscope
GND
set
L
R
Waveform of oscilloscope
in phase 45
°
90 °
135 °
180 °
good wrong
reverse
forward
test tape
P-4-L300
(315Hz, 0dB)
VIDEO/MD
(AUDIO) OUT
level meter
set
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:
J101 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
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

— 14 —
Record Bias Adjustment (Deck B)
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjust-
ment,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 ad-
justment. During recording, the input signal FUNCTION will auto-
matically 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 rREC button.
3. Mode: Record
4. Mode: Playback
5. Confirm playback the signal recorded in step 2 become adjust-
ment level as follows.
If these levels do not adjustment level, adjust the RV341 (L-
CH) and RV441 (R-CH) on the AUDIO board to repeat steps 3
and 4.
Adjustment level: The playback output of 10 kHz level difference
against 315 Hz reference should be ± 1.0 dB.
Adjustment Location: AUDIO board
Record Level Adjustment (Deck B)
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjust-
ment, 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 rREC button.
3. Mode: Record
5. Confirm playback the signal recorded in step 2 become adjust-
ment level as follows.
If these levels do not adjustment level, adjust the RV301 (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
Adjustment Location
[AUDIO BOARD] (Conductor Side) [MAIN BOARD] (Component Side)
4. Mode: Playback
AF OSC
VIDEO/MD (AUDIO) IN
1) 315Hz
2) 10kHz
blank tape
CS-123
set
attenuator 600
Ω
} 50 mV (–23.8 dB)
AF OSC
VIDEO/MD (AUDIO) IN
315Hz 50 mV (–23.8 dB)
blank tape
CS-123
set
attenuator 600
Ω
RV341 (Lch), RV441 (Rch)
Record Bias
RV301
RV401
RV301 (Lch), RV401 (Rch)
Playback Level (Deck B)
RV651 (Normal Speed)
RV652 (High Speed)
Tape Speed
RV651 RV652
RV311
RV411
RV311 (Lch), RV441 (Rch)
Playback Level (Deck A)
RV441 RV341
RV301
Record Level (L CH
)
IC401
RV351
Record Level
(R CH)
recorded
position
VIDEO/MD
(AUDIO) OUT
level meter
set
recorded
position
VIDEO/MD
(AUDIO) OUT
level meter
set
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

— 15 —
CD SECTION
NOTE :
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. UseYEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩimpedance.
4. Clean the object lensby an applicator with neutral detergentwhen
the signal level is low than specified value with the following
checks.
S Curve Check
Note : A clear RF signal waveform means that the shape “◊” can
be clearly distinguished at the center of the waveform.
RF signal waveform
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 turned 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 be-
tween A and B.
And confirm peak to peak level within 3±1 Vp-p.
S-curve waveform
oscilloscope
BD board
TP (FE)
TP (VC) +
–
symmetry
A
B
Within 3
± 1 Vp-p
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 sweeptime aslong as possible and light up the bright-
ness 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 sig-
nal level is correct or not.
VOLT/DIV : 200mV
TIME/DIV : 500ns
level : 1.3 Vp-p
+0.25
–0.20
E-F Balance (1Track Jump) check (Without remote com-
mander)
Procedure:
1. Connect oscilloscope to test point TP (TE) on BD board.
2. Turned Power switch on. Press FUNCTION button to select
CD.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “P(Pause)” button.
5. Check the level B of the oscilloscope's waveform and theA (DC
voltage) of the center of the Traverse waveform.
Confirm the following:
• A/B x 100 = less then ± 22 (%)
1 track jump waveform
E-F Balance (Traverse) Check (With remote commander)
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 sled-
ding servo are turned OFF.)
oscilloscope
BD board
TP (TE)
TP (VC) +
–
0V
level : 1.3
± 0.6 Vp-p
A (DC voltage)
Center of the waveform
B
Symmetry
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

— 16 —
7. Check the level B of the oscilliscope's waveform and theA (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%
Traverse waveform
Adjustment Location :
[ BD BOARD ] — SIDE A — [ VIDEO BOARD ] — SIDE B —
120
10 11
IC103 (RF)
(FE)
(FEI)
(TE)
(VC)
IC101
(PLCK)
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
0V C (DC
voltage)
Tracking servo
Sled servo
OFF
Tracking servo
Sled servo
ON
0V
level : 1.3 ± 0.6 Vp-p
A (DC voltage)
Center of the waveform
B
9. Remove the lead wire connected step 1.
RF PLL Free-run Frequency Check
Procedure :
1. Connect frequency counter to TP (PLCK) with lead wire.
2. Turned Power switch on.
3. Put the disc (YEDS-18) in to play the number five track.
Confirm that reading on frequency counter is 4.3218MHz.
BD board frequency counter
TP (PLCK) +
–
VIDEO SECTION
Frequency adjustment
1. Connect the frequency counter to check point of the VIDEO
board.
2. Adjust CT401 of theVIDEO board so that the frequency counter
read 13.5MHz ± 40Hz at STOP condition.
SL703 (AFADJ)
IC751 IC251
SL702 (ADJ)
SL701 (CAL BAR)
CT401
Frequency
TP410 (DCLK)
frequency counter
VIDEO board
TP410 (DCLK) +
–
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

— 17 — — 18 —
SECTION 7
DIAGRAMS
7-1. CIRCUIT BOARDS LOCATION 7-2. BLOCK DIAGRAMS
— KEY CON SECTION —
HCD-V909AV
J751
MIC LEVEL
RV750
MIX MIC 31
IC1403
67
1298
5
34
91011
Q1401
789
L OUT
A
MAIN
SECTION
• R CH : Same as Lch
• Signal path
: FM
: MIC
(Page 25)
22 15
MIX
OUT
LPF1
IN
Rch
DATA
CLK
LATCH
K CON
L IN
DATA CLOCK STORBE
KEY CONTROL
IC1401
SWITCH
ECHO LEVEL
RV751
IC751
ECHO
LPF1 LPF2
IC750 (2/2)
ECHO AMP
IC750 (1/2)
MIC AMP
09
Note: pA is including in AUDIO board.
pB is including in PANEL board.
CONNECTOR board MOTOR (TURN) board
BD board
MOTOR (SLIDE) board
SENSOR board
VIDEO board
VIDEO POWER board
DECO board SURROUND boar
d
POWER board
TRANS board
p A
MOTOR board
LEAF SWITCH board
AUDIO board
(including
p A)
ENCAPSULATED
COMPONENT
VIDEO OUT board
KEY CON board
CD SW board
PANEL board
(including
p B)
HP/ MIC board
TC SW board
MAIN board
p B
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

— 19 — — 20 —
HCD-V909AV
APC LD
AMP
RF AMP
IC103
1
2
19
3
4
5
6
RF
SUMMING
AMP RF FQ
AMP
FOCUS
ERROR
AMP 15
TRACKING
ERROR
AMP 13
1110
VC
BUFFER 12 VC
VC
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED MOTOR DRIVE
IC102
1
24
5
T+
T–
F+
F– 19
20
16
17
10
9
12
13
M
M102
SLED
MOTOR
M
M101
SPINDLE
MOTOR
27
26 23
24
TRACKING
COIL
FOCUS
COIL
16
RF
15MUTE
09
8
9
4
AC
BD
E
F
DETECTOR
1
OPTICAL PICK-UP
BLOCK (KSS-213D/Q-NP)
LD
DRIVE
Q101
PD
LASER
DIODE
LD
LD
POWER
INTEGRATOR
INTE-
GRATOR 28
27
26
29
RF DC
TE
SE
FE
A/D
CONVERTER
4
6
10
8
2
100
96
ASYMMETRY
CORRECTION
ASY0
RF AC
ASY1 MIX
36
MIRR
DFCT
FOK
DETECTOR
DIGITAL
PLL
EFM
DEMODULATOR
CLOCK
GENERATOR
FOK
DFCT
MIRR
SERVO DSP
FOCUS
SERVO
TRACKING
SERVO
SLED
SERVO
PWM
GENERATOR
TRACKING
PWM
GENERATOR
FOCUS
PWM
GENERATOR
SLED
PWM
GENERATOR
SYNC
PROTECTOR
CLV SERVO
PROCESSOR
1B TIMS
OVERSAMPLING
FILTER
NOISE
SHAPER
TIMING
GENERATOR 1
TIMING
GENERATOR 2
DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
IC101 62
XTAL
REGISTER
DATA BUS
ERROR
CORRECTOR
D/A
DATA
PROCESSOR
79 54
MUTE
GFS
99
S STOP
+5V
S901
LIMIT
SWITCH
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
MDP
32K
RAM
ADDRESS
GENERATOR
PRIORITY
EMCODER
SERIAL/PARALLEL
PROCESSOR
PEAK
DETECTOR SUBCODE
Q
PROCESSOR
SUBCODE
P-W
PROCESSOR
DIGITAL
OUT
70
MD2
71
DOUT
EXCK 76
SBSO 75
77
78
SUBQ
SQCK
83
SCLK
73
74
SCOR
WFCK
47
BCLK
LRCK 45
DATA 46
+5V 384FS
LDON
SUBQ
IC841
SQCK
SCLK
ADATA
LRCK
BCK
SCOR
86
87
88
XLT
DATA
CLK XLT
DATA
CLK
CPU
INTERFACE
SERVO
AUTO
SEQUENCER SENS SENS
80
56
C2PO
SERVO
INTERFACE
MIRR 91
92
DFCT
FOK 93
81
XRST XRST
AMUTE
39
38
C2PO
VIDEO
SECTION
B
(Page 21)
C
MAIN
SECTION
(Page 25)
• R CH: Same as L ch
• SIGNAL PATH
: CD
: VIDEO
: CD (Digital)
1
CD
DIGITAL OUT
OPTICAL
M
TABLE
SENSOR
IC702
T. SENS
OPEN
S801
OPEN/CLOSE
DET
OUT1 IN1
IN2
OUT2
M
M701
TURN
MOTOR
TBL.L
TBL.R
TURN
MOTOR DRIVER
IC701
7
DISC
SENSOR
IC703
ROTARY
ENCODER
S811
Q701 DISC SENS
ENC-1
ENC-2
ENC-3
2
4
72 10
M801
SLIDE
MOTOR OUT2
OUT1 RIN
FIN
SLIDE
MOTOR DRIVER
IC801
LOAD IN
LOAD OUT
3
6
— CD SECTION —
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

— 21 — — 22 —
— VIDEO SECTION —
HCD-V909AV
RGB-YUV
CONV.
TIMING
GEN.
NOISE
REDUSER YUV-RGB
CONV.
60
67
51
58
1
4
•
6
9
11
18
71
74
•
76
80
63
70
1
4
•
6
9
11
18
MEMORY
CONT.
DRAM
IF 29
30
31
98 10097
DCLKI
Y
C
Y
C
NOISE REDUCTION
IC301
DEMPX, LEVEL
TRANSLATOR
&
INTERPOLTATOR
VIDEO
POSTPROCESSOR
&
SYNC GENERATOR
LPF
LPF
DELAY
MODULATOR
SYNC
SLOPE
GEN.
CLOSED
CAPTION
ENCODER
SIO & I2O-BUS
CONT.
SUB
CARRIER
GEN.
SYNC GEN.
&
TIMING CONT.
49 504859 60625557 51
1/2
56
XRST
DCLK HSYNC VSYNC DCLKI XVRST FID VSYNC HSYNC
VDAC-XLAT CLK DATA
3456
X401
27MHz
CT401
13.5MHZ
CLOCK GENARATOR
IC402
Y, C/Y, U, V
SELECTOR
&
INTER-
POLATOR
24
29
32
5
3
7
143
V
Y
C
10BIT VIDEO D/A CONVERTER
IC401
5 7
VIDEO AMP
IC451
Y/C AMP
IC452
J9001
VIDEO OUT
J9002
S VIDEO OUT
NR-XCS
MCLK
MDATA
MDATA
RESET
OS-XLAT
MCLK
OUTPUT
CONT.
4
3
2
1
8
OSD
IC271
VIDEO
RAM
DATA INPUT
SHIFT
RESISTOR
SYNC
CONT. DATA SEL.
DISPLAY
POSITION
CONT.
18
17
16
15
19
20 OSC
1 5
CK 1/2 Q 6.75MHz
DCLK
HSYNC
VSYNC
XOSDEN
OSD R
OSD G
OSD B
CLOCK
GENERATOR
IC272
97
95
92
93
94
89
56
57
58
59
118
HSYNC
XSGRST
VSYNC
FID
DCLK
XOSDEN
OSD B
OSD G
OSD R
XRST
MPEG
VIDEO
DECODER
MPEG
SYSTEM
DECODER
CD-ROM
DECODER
MPEG
AUDIO
DECODER
112
111
110
109
103
100
101
102
11
12
13
14
15
9
8
7
6
5
2
3
BUFFER
IC501 (1/2)
HOST INTERFACE
117115116114
EACH CIRCUIT BLOCK
D-RAM INTERFACE
34
301516 31
5 6•• •119 120
7–13 16
•
17–21 23 24 32 33••••
38–43 46–55•
X202
28.63636MHz
106
107
X201
45.1584MHz
XTL0O
XTL01
XTL2O
XTL2I
MPEG DECODER
IC201
18–21 24–28•
272022
55
2–10 21 23–25
••
•
2–5 7–10 35–38 40–43
••
LCAS
UCAS
W
RAS
A8 A0
DQ16
DQ1
WE CE1 OE
A12
A0
I/O8 I/O1
D-RAM
IC251
S-RAM
IC751
D0
D7 A0
A3
XHCS XWR XHDT XHIRQ
•11–13 15–19
8
10 9
6
12
11
12 13
XTCS
IC772
41 54 56 43 70 7 8
21–29 • 31–3513 – 20
3735
68494847
34
35
36
37
44
18
43
1
2
3
4
5
6
72
64
CMD0
CMD1
CMD2
CMD3
SACK
QINT
MREQ
MDATA
MCLK
OS-XLAT
NR-XCS
73
78
74
11
10
77
76
DATA
CLK
AMUTE
SQCK
SUBQ
SCLK
XLT
CMD0
CMD1
CMD2
CMD3
SACK
QINT
MREQ
NPIN
75
71
62
48
LDON
SCOR
SENS
RESET
384FS
DATA
CLK
AMUTE
SQCK
SUBQ
SCLK
XLT
LDON
SCOR
SENS
XRST PAL
AUTO
NTSC
S9001
SYSTEM SELECT
5251 X701
10MHz
EXTAL XTAL
111052 X901
5MHz
X2 CD-XRST X1
VDAC-XLAT
DF-XLAT
WAIT
WR
XHIRQ
AS
A17
A18
RD
A12
A0
D7 D0
MECHA CONTROL
IC701
56
55
15
IIC INTERFACE
IC901
RESET
IIC-DATA
IIC-CLK
B
CD
SECTION
(Page 20)
B
CD
SECTION
(Page 20)
09
BCK
ADATA
LRCK
C2PO
384FS
ADATA
LRCK
BCLK
416
IC501
(2/2)
DATA
CLK
AMUTE
384FS
11
6
3
11 27
25
21
22
16
18
12
10
3
4
5
2
13
4
1
BUFFER
IC181
XRST
6
INPUT PLM
D/A
CONV.
MODE MUTE
CIRCUIT
ADATA
384FS
LRCK
BCLK
DATA
CLK
DF-XLAT
AMUTE
TIMING
CIRCUIT CLOCK GENERATOR
1
IIC-CLK
IIC-DATA
XRST
L CH D
MAIN
SECTION
(Page 25)
2
316 7
R CH
ACTIVE LPF
IC102
X101
33.8688MHz
DIGITAL FILTER & D/A CONVERTER
IC101
• R CH: Same as L ch
• SIGNAL PATH
: VIDEO
: Y
: CHROMA
: CD
Y0-Y7
C0-C7
INT
40
54
3
IC771
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

HCD-V909AV
— 23 — — 24 —
IC611
R CH
HP101
PB HEAD
(DECK A)
L
R
RV311
PLAYBACK
LEVEL
DECK A
IC601
R CH
L
R
RV301
PLAYBACK
LEVEL
DECK B
31IC602
4
REC/PB
EQOUT
REC BIAS BIAS OSC
T621, Q621, 622
ERASE HEAD ERASE BIAS
4
2B IN
A IN
12PB-A/B
EQIN 10
11
RV301
REC LEVEL 10 RECOUT
BIAS SW
NORM
CROM
70
120
DOLBY
TYPE B
+7.5V
Q623, 901
RIN 6
PB 19
14
16
17
8
20
PB OUT
LM ON/
OFF
BIAS ON/OFF
RM ON/OFF
PB L
REC L
PB A/B
NORM/HIGH
REC/PB/PASS
BIAS ON/OFF
RM ON/OFF
RELAY REC/PB
09
E
MAIN
SECTION
LM ON/OFF
NORM/
HIGH
PAS
DOL
PR
REC/PB HEAD
(DECK B)
X
DECK PROCESSDOLBY NR
IC401
HRPE101
RV341
REC
BIAS
24 25
18
NR ON/
OFF NR ON/OFF
13
S1004
A CrO2S1008
B CrO2
15
A 120/70 B 120/70
M
CAP M SWITCH
Q405, 407
SPEED
CONTROL
Q651 SWITCH
Q406
RV652
HIGH
SPEED
RV651
NORMAL
SPEED
M1
CAPSTAN
MOTOR
CAP M ON/OFF
CAP M H / L
REEL
DETECT
Q1001 A SHUT
B SHUT
REEL
DETECT
Q1002
S1001 (A PLAY)
+5V
S1002 (B PLAY) A PLAY
B PLAY
A HALF
S1003
(A HALF)
+5V
S1005
(REC A)
S1006
(B HALF)
S1009
(REC B)
SWITCH
Q408, 409 TRIG H / L
B TRIG
A TRIG
4
6
5
TRIGGER
MOTOR
DRIVE
IC402
VZ
IN2
IN1
OUT1
OUT2
2
10
M
M2
TRIGGER
MOTOR
BHALF
(Page 25)
• R CH : Same as L ch
• SIGNAL PATH
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
R CH
CN403
1
3
— DECK SECTION —
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com