Sony HCDV-717 Service manual
HCD-V717
SERVICE MANUAL
HCD-V717 is the Amplifier, Video CD
player, Tape Deck and Tuner section in
MHC-V717.
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.
CD
Section
TAPE
DECK
Section
E Model
Chinese Model
Tourist Model
Model Name Using Similar Mechanism HCD-V707
CD Mechanism Type CDM38L-5BD24AL
Base Unit Type BU-5BD24AL
Optical Pick-up Type KSS-213D/Q-NP
Model Name Using Similar Mechanism HCD-GRX7
Tape Transport Mechanism Type
TCM-230AWR1/
230PWR1
SPECIFICATIONS
MINI Hi-Fi COMPONENT SYSTEM
– Continued on next page –
MICROFILM
– 2 –
SECTION 1
SERVICING NOTES
TABLE OF CONTENTS
1. SERVICING NOTES............................................... 3
2. GENERAL
Location of Controls ....................................................... 6
Setting the Time .............................................................. 7
3. DISASSEMBLY ......................................................... 8
4. TEST MODE.............................................................. 11
5. MECHANICAL ADJUSTMENTS....................... 14
6. ELECTRICAL ADJUSTMENTS
DECK Section ................................................................. 14
CD Section ...................................................................... 17
VIDEO Section ............................................................... 18
7. DIAGRAMS
7-1. Block Diagram – SERVO Section – .............................. 19
7-2. Block Diagram – AUDIO/VIDEO CD Section – ........... 21
7-3. Block Diagram – TAPE DECK Section –...................... 23
7-4. Block Diagram – MAIN Section –................................. 25
7-5. Block Diagram – DISPLAY/KEY CONTROL/
POWER SUPPLY Section – ......................................... 27
7-6. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 30
7-7. Printed Wiring Board – BD Section – ............................ 31
7-8. Schematic Diagram – BD Section – .............................. 33
7-9. Printed Wiring Board – VIDEO Section – ..................... 35
7-10. Schematic Diagr am (1/2) – VIDEO Section – .............. 37
7-11. Schematic Diagr am (2/2) – VIDEO Section – .............. 39
7-12. Printed Wiring Boards – CD MOTOR Section –........... 41
7-13. Schematic Diagr am – CD MOTOR Section – .............. 43
7-14. Printed Wiring Board – TAPE DECK Section – ........... 45
7-15. Schematic Diagr am – TAPE DECK Section –.............. 47
7-16. Printed Wiring Board – LEAF SW Section – ............... 49
7-17. Schematic Diagram – LEAF SW Section – .................. 49
7-18. Pr inted Wiring Board – MAIN Section – ...................... 51
7-19. Schematic Diagram – MAIN Section (1/4) – ............... 53
7-20. Schematic Diagram – MAIN Section (2/4) – ................ 55
7-21. Schematic Diagram – MAIN Section (3/4) – ................ 57
7-22. Schematic Diagram – MAIN Section (4/4) – ................ 59
7-23. Pr inted Wiring Board – PANEL Section – .................... 61
7-24. Schema tic Diagr am – PANEL Section –....................... 63
7-25. Pr inted Wiring Board – CD-SW Section –.................... 65
7-26. Schematic Diagram – CD-SW Section – ...................... 65
7-27. Pr inted Wiring Board – HP Section – ........................... 67
7-28. Schematic Diagram – HP Section – .............................. 67
7-29. Printed Wiring Board – POWER AMP Section – ......... 68
7-30. Schematic Diagr am – POWER AMP Section –............ 69
7-31. Printed Wiring Board
– TRANSFORMER Section – ........................................ 71
7-32. Schematic Diagram
– TRANSFORMER Section – ........................................ 72
7-33. IC Pin Function Description ........................................... 79
8. EXPLODED VIEWS ................................................ 89
9. ELECTRICAL PARTS LIST ............................... 98
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 objectiv e 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.
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.
CAUTION : INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
ADVARSEL : USYNLIG LASERSTRÅLING VED ÅBNING NÅR
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE
FOR STRÅLING.
VORSICHT : UNSICHTBARE LASERSTRAHLUNG, WENN
ABDECKUNG GEÖFFNET UND SICHEREITSVERRIEGELUNG
ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
VARO!: AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT-
TIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING : OSYNLING LASERSTRÅLING NÄR DENNA DEL ÄR ÖPPNAD
OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.
ADVERSEL : USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG
SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.
VIGYAZAT!: A BURKOLAT NYITÁSAKOR LÁTHATATLAN LÉZERSU-
!
KERÜLJE A BESUGÁRZÁST!
GÁRVESZÉLY
– 3 –
MODEL IDENTIFICATION
– Back Panel –
PART No.
MODEL PART No.
Malaysia and Singapore models 4-900-721-0π
Tourist model 4-900-721-1π
Chinese model 4-900-721-2π
Hong Kong model 4-900-721-3π
Taiwan model 4-900-721-4π
Indonesia model 4-900-721-5π
Thai model 4-900-721-6π
Saudi Arabia model 4-900-721-8π
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
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.
– 4 –
1
Remove the Case. (See page 8.)
3
Pull-out the disc tray.
2
Turn the cam to the
direction of arrow.
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF
e
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
!∞
!§
!¶
!•
!ª
@º
@¡
@™
@£
@¢
@∞
1 2
3 4
5
6
7
8
9
!º
!¡
!™
!£
!¢
1 I /u (Power) button
2 DISC 1 to 3 buttons and indicators
3 DISC SKIP/EX-CHANGE button
4 6 (CD) button
5 CD disc tray
6 CD ^ button and indicator
7 TUNER, BAND button
8 r REC button and indicator
9 P PAUSE button and indicator
!º HI-DUB button
!¡ CD SYNC button
!™ EFFECT button and indicator
!£ SURROUND button
!¢ KARAOKE PON/MPX button
!∞ DECK B 9 and ( buttons and indicators
!§ DECK A 9 and ( buttons and indicators
!¶ FUNCTION button
!• ECHO LEVEL knob
!ª MIC LEVEL knob
@º MIC1 jack
@¡ MIC2 jack
@™ DISPLAY/DEMO button
@£ CLOCK/TIMER SET button
@¢ TIMER SELECT button
@∞ p button
#ª
$º
#¢
#∞
#§
#¶
#•
$¡
$™
$£
@§ @¶ @•
$¢ $∞ $§ $¶ $• $ª %º
@ª
#º
#¡
#™
#£
@§ Fluorescent indicator tube
@¶ ENTER/NEXT button and indicator
@• A CTIVE, SELECT, RETURN, PREV, NEXT buttons
@ª VIDEO CD, PBC, PBC OFF indicators
#º GROOVE button and indicator
#¡ VOLUME konb
#™ PHONES jack
#£ DBFB button
#¢ Remote sensor
#∞ P FILE MEMORY button
#§ GEQ CONTROL button
#¶ FILE SELECT button
#• CD LOOP button
#ª CD NON-STOP button and indicator
$º CD FLASH button
$¡ EDIT, DIRECTION button
$™ PLAY MODE, DOLBY NR button
$£ REPEAT button
$¢ § button (deck A)
$∞ Tape deck A
$§ –, 0 button and indicator
$¶ JOG dial
$• +, ) button and indicator
$ª Tape deck B
%º § button (deck B)
– 6 –
• Rear view
7
8
9
!º
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 terminal
6 VOLTAGE SELECTOR switch
(EXCEPT Thai and Chinese models)
7 CD DIGITAL OUT, OPTICAL connector
8 MD/VIDEO (AUDIO), IN/OUT jacks
9 SUPER WOOFER jack
!º SPEAKER terminals
– 7 –
SECTION 3
)
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
CASE
2
screw
(CASE3 TP2) (3 × 12)
3
two screws
(CASE3 TP2) (3 × 8)
4
6
case
5
4
1
three screws
(BVTT3 × 8)
2
screw
(CASE3 TP2) (3 × 12)
3
two screws
(CASE3 TP2) (3 × 8
FRONT PANEL SECTION
4
loading panel
3
two claws
screw
9
(BVTP3
2
Pull-out the
disc tray.
×
10)
1
Turn the cam to the direction
of arrow
A
A
.
9
screw
(BVTP3
×
10)
5
wire (flat type)
(15 core) (33 cm)
(CN106)
0
three screws
(BVTT3
7
wire (flat type)
8
connector
(CN109)
×
6)
6
wire (flat type) (13 core)
(23 cm) (CN201)
(17 core) (CN107)
– 8 –
TAPE MECHANISM DECK SECTION (TCM-230AWR1/230PWR1)
1
Push two
cassette lids.
3
three screws
(BVTP3
×
8)
2
Open two
cassette lids.
4
two screws
(BVTP3
×
8 )
5
tape mechanism
deck section
TCM-230AWR1
TCM-230PWR1
()
6
CD mechanism deck section
(CDM38L-5BD24AL)
4
two screws
(BVTP3 × 8)
8
screw
(BVTP3 × 8)
9
VIDEO board
7
wire (flat type) (23 core)
(CN501)
1
two connectors
(CN103, CN104)
3
two screws
(BVTP3 × 8)
2
wire (flat type) (13 core) (17 cm)
(CN105)
5
claw
5
claw
CD MECHANISM DECK SECTION (CDM38L-5BD24AL),
VIDEO BOARD
– 9 –
MAIN BOARD
d
1
two connectors
(CN11, 12)
3
two screws
(BVTP3
×
8)
3
screw
3
screw
(BVTP3
(BVTP3
×
8)
×
8)
2
wire (flat type) (15 core) (14 cm)
(CN102)
7
connector
(CN110)
6
MAIN boar
4
two screws
(BVTT3
×
6)
5
connector
(CN101)
– 10 –
SECTION 4
D502
IC505
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 fluor escent indicator tube becomes blank instantaneously ,
and the set is reset.
[CD Delivery Mode]
• This mode moves the pickup 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 b uttons p , [ENTER/NEXT], and [DISC1] simul-
taneously.
2. The fluor escent 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 pickup.
Procedure:
1. Press
2. Select the function “CD”.
3. Press three buttons p , [ENTER/NEXT], and § sim ulta-
4. The Sled Servo mode is selected, if “CD” is blanking on the
5. With the CD in stop status, press ) + button to move the
6. To exit from this mode, perform as follows:
Note: • Always move the pickup to most inside track when exiting from
I/u button to turn the set ON.
neously.
fluorescent indicator tube.
pickup to outside track, or – 0 button to inside track.
1) Move the pickup to the most inside track.
2) Press three buttons in the same manner as step 3.
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 b uttons 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 ke y 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] 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 man-
ner as step 1, or disconnect the power cord.
[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)
[Change-over of FUNCTION Name]
• The FUNCTION name of external input terminal can be changed
over to “VIDEO” of “MD”.
Procedure:
1. Press I/u button to turn the set OFF.
2. Press I/u button together with [FUNCTION] button, and the
power is turned on, the display of fluorescent indicator tube
changes to “MD” of “VIDEO” instantaneously, and thus the
FUNCTION is changed over.
– 11 –
[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 and display status.
• If no error occurs:
The aging operation continues repeatedly.
1. Operating Method of Aging Mode
1) Set disc in DISC1 tray.
2) Load the tapes recording use into the decks A and B respec-
tively.
3) Press three buttons p , [ENTER/NEXT],
and [DISCSKIP/EX-CHANGE] simultaneously.
4) The aging mode is activated, if a CD roulette mark on the fluo-
rescent indicator tube is blinking.
5) To exit from the aging mode, press I/u button to turn the set
OFF.
2. Operation Sequence
• During the aging mode in the following sequence to below.
• Starting the CD section aging for function set “CD”, starting
the TAPE section (deck A) aging for function set “TAPE A” or
“TAPE B”. (Set another function is no work.)
CD (disc1) (12 minutes) → Deck A
↑↓(Maximum about
Deck B 12 minutes)
3. Aging mode in CD section
1) Display state
• No error occurs
display
1 –
[*][*]
Note:
: a letter “CD” and the remainder time (minute) alternately. (re-
[*][*]
mainder time start from 12 minute)
@@: track number in access.
@ @
• Error occurred
NO. Display Main factor
1 NO DISC ERR Not set disc in DISC1
2 FOCUS1 ERR Focus does not work
3 FOCUS2 ERR Focus does not work after the disc rotate as usual
4 GFS ERR GFS error
5 FBIAS ERR Error in to the focus bias adjustment
6 SENSOR ERR Disc sensor sens DISC1 is no disc
7 TABLE ERR CD tray lotate does not work
8 TRAY ERR Tray (include BD) move does not work
4. Aging mode in Tape Deck section
1) Display state
• No error occurs
Display action now
• Error occurred
Display action last time
NO. Display action Action contents Final timing
1 TAPE A AG-1 Rewind the TAPE A The top of tape
2 TAPE A AG-2 FWD play the TAPE A 2 minutes playing
3 TAPE A AG-3 F.F. the TAPE A First either 20 seconds
or the end of tape
4 TAPE A AG-4 REV play the TAPE A 2 minutes playing
5 TAPE A AG-5 Rewind the TAPE A The top of tape
6 TAPE B AG-1 Rewind the TAPE B The top of tape
7 TAPE B AG-2 FWD play the TAPE B 2 minutes playing
8 TAPE B AG-3 F.F. the TAPE B First either 20 seconds
or the end of tape
9 TAPE B AG-4 REV play the TAPE B 2 minutes playing
10 TAPE B AG-5 Rewind the TAPE B The top of tape
2) Operation during Aging Mode
In the aging mode, the program is executed in the following sequence.
(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 follow-
ing 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 follow-
ing 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.
2) Operation during aging Mode
In the aging mode, the program is executed in the following sequence.
(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.
– 12 –
[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
– 13 –
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
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
2 to 6 g • cm
(0.03 – 0.08 oz • inch)
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
2 to 6 g • cm
(0.03 – 0.08 oz • inch)
71 to 143 g • cm
(0.99 – 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)
set
MAIN board
CN301
3
(L-CH)
Pin
Pin
1
(R-CH)
MAIN board
CN301
Pin
2
(GND)
level meter
+
–
– 14 –
2. T urn the adjustment scre w 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
3. Mode: Playback (FWD)
Tape Speed Adjustment
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
DECK B
[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
+
–
test tape
P-4-A100
(10 kHz, –10 dB)
in phase 45 °90 °135 °180
MAIN board
CN301
(pin
3
: L-CH)
(pin
good
(pin 2: GND)
1
: R-CH)
wrong
set
waveform of oscilloscope
oscilloscope
H
V
°
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).
MAIN board
CN301 (Pin
3
: L-CH)
Pin 1 : 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
+
–
forward
reverse
MAIN board
CN301 (Pin
(Pin
3
1
: 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
– 15 –
REC Bias 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.)
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
4. Mode: Record
MD/VIDEO (AUDIO) IN
AF OSC
+
–
315 Hz, 50 mV (–23.8 dB)
attenuator
+–+
5. Mode: Playback
recorded
portion
–
set
600
Ω
MAIN board
CN301 (Pin
(Pin
set
level meter
3
: L-CH)
1
: R-CH)
blank tape
CS-123
+
–
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
5. Mode: Playback
recorded
portion
set
MAIN board
CN301 (Pin
(Pin
level meter
+
–
3
: L-CH)
1
: 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
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
Adjustment Location:
[MAIN Board] (Component Side)
RV301
L
13
CN107
CN106
RV351
R
REC LEVEL
CN301
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.)
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.
[AUDIO Board] (Component Side)
RV441
RV401
RV301
LR
PB LEVEL
– DECK B –
[LEAF SW Board] (Component Side)
TAPE SPEED
(NORMAL) (HIGH)
RV1002
IC602
RV341
RL
REC BIAS
RV1001
– 16 –
CN601
RV311
PB LEVEL
– DECK A –
CN1001
RV411
LR
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
)
CN102
CN101
IC103
IC101
TP
(FOK)
TP
(TE)
TP
(FE)
TP (RF)
TP (VC)
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 indica ted.
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:
oscilloscope
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.
+
–
RF signal waveform
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
When a general remote commander is not used (1 Track Jump
Check):
Procedure:
1. Connect the oscilloscope to TP (TE) and TP (VC) on BD board.
2. Turned power switch on.
3. Put disc (YEDS-18) in and press the fl button, and play the
number five track.
4. Press the fl button. (Becomes the 1 track jump mode)
5. Confirm that the level B of the oscilloscope's waveform and
the A (DC voltage) of the center of the traverse waveform.
Confirm the following:
A – B
2 (A + B)
× 100 = ± 7 (%)
S-curve waveform
symmetry
A
within 3.0 ± 1.0 Vp-p
B
6. After check, remove the lead wire connected in step 2.
Note: • Try to measure several times to make sure that 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:
Procedure:
BD board
TP (RF)
TP (VC)
oscilloscope
(AC range)
+
–
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.
1 track jump waveform
0V
level: 1.3 ± 0.6 Vp-p
Connection Location:
[BD Board] (Side A)
Center of the waveform
B
A (DC voltage
symmetry
– 17 –
VIDEO SECTION
Frequency Adjustment
Connection:
VIDEO board
TP508 (27 MHz)
Procedure:
1. Connect the frequenc y 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)
frequency counter
+
–
IC505
IC507
TP508
(27 MHz)
CT503
VIDEO
Frequency
Adjustment
– 18 –
SECTION 7
DIAGRAMS
HCD-V717
7-1. BLOCK DIAGRAM – SERVO Section –
RF AMP,
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
M102
(SLED)
A+5V
M
M
A
3
B
4
C
5
D
6
F
8
E
9
AUTOMATIC
POWER
CONTROL
Q101
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
OUT+
27
OUT–
26
OUT+
13
OUT–
12
OUT–
2
OUT+
1
OUT+
16
OUT–
17
FOCUS/TRACKING ERROR AMP
F I-V AMP
E I-V AMP
1
LD
IC102
MOTOR
DRIVE
MOTOR
DRIVE
COIL
DRIVE
COIL
DRIVE
IC103
RF
SUMMING
AMP
APC LD
AMP
IN+
IN–
IN–
IN+
IN–
IN+
MUTE
IN+, IN–
RF EQ
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
APC PD
AMP
23, 24
9
10
4
5
19
20
15
RFO
RFE
FE BIAS
LDON
IC104
6320
FILTER
32
34
33
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
100
SRDR
2
TFDR
4
TRDR
6
FFDR
8
FRDR
10
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
MDP
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
IC381
• SIGNAL PATH
: CD PLAY
: DIGITAL OUT
(Page 22)
A
(Page 21)
B
CD DIGITAL OUT
OPTICAL
– 19 – – 20 –
RESET
C
(Page 22)
HCD-V717
7-2. BLOCK DIAGRAM – AUDIO/VIDEO CD Section –
MPEG VIDEO/AUDIO DECODER,
VIDEO SIGNAL PROCESSOR
IC505
DATA, BCK,
B
(Page 20 )
LRCK, C2PO
DATA
BCK
LRCK
C2PO
LEVEL
SHIFT
IC501
CD-DATA
4
CD-BCK
3
5
6
CD-LRCK
CD-C2PO
CD-ROM
INTERFACE
CIRCUIT
MA0 – MA10
58 – 56, 54, 52 – 50, 48, 46 – 44 10 – 15, 17, 19, 21, 23 – 29
MPEG
SYSTEM
DECODER
D-RAM/ROM INTERFACE
MD0 – MD15
MPEG
AUDIO
DECODER
MPEG
VIDEO
DECODER
MCE
37
VIDEO
PROCESS
CIRCUIT
RAS0
MWE
38 42 40
AUDIO
INTERFACE
CIRCUIT
CAS
60
RESET
DA-DATA
DA-BCK
DA-LRCK
DA-XCLK
Y-OUT
C-OUT
VCK-IN
PGIO2/VSYNC/CSYNC
CPU INTERFACE
HRDY
HSEL
HD-OUT
HD-IN
HINT
113
114 121
HCK
112
119
117
(Page 20 )
A
MCLK
33.8MHz
110
111
108
86
69
75
106
93
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 25)
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)
A0 – A8
16 – 19, 22 – 26
A0 – A8
D-RAM
IC507
UCAS
LCAS
14 132928
RAS
DQ1 – DQ16
WE
D0 – D15
ADDRESS BUS
DATA BUS
12 – 5, 27, 26, 23
PROGRAM ROM
A0 – A10
IC506
A0 – A10
X401
8MHz
A0 – A10
XIN
19
XOUT
20
13 – 15, 17 – 212 – 5, 7 – 10, 31 – 34, 36 – 39
D0 – D7
O0 – O7
12C.DATA
14 13
25, 4, 28, 29, 3, 2, 30
EXPANSION
IC402
RESET
12C.CLK
D0 – D15
D8 – D14
A11 – A17
CE
22
RXD
BUFFER
Q502
DATA
CLK
BUS
45
CLK1
33
DATA1O
31
32
DATA1I
CL680 SEL
21
20
CL680 HINT
CL680 HRDY
23
24
CL680 RESET
S501
SYSTEM SELECT
NTSC
AUTO
PAL
D502
UTAU
TXD
UTAI
10918
1112
(SELF DIAGNOSIS)
CD MECHANISM CONTROLLER
93
NT/PAL
TEST LED
73
DEVICE RESET
IC502 (2/2)
DF LATCH
22
77
VIDEO
BUFFER
Q303
B.P.F.
VIDEO
BUFFER
Q301
SHARPNESS
FILTER
Q302
VIDEO
BUFFER
Q307
VIDEO
BUFFER
Q308
Y/C MIX
Q310
RESET
VIDEO AMP
IC401 (1/2)
VIDEO AMP
(Page 20)
C
13
IC401 (2/2)
S VIDEO OUT
C
Y
VIDEO
MUTE
Q453
75
J301
1
3
4
2
J302
VIDEO OUT
(Page 26)
D
F
(Page 25)
RESET
DATA, CLK
05
FORMER TYPE
– 21 –
DATA
CLK
NEW TYPE
DATA
CLK
72
UTOI
19
ITOU
29
RXD
30
TXD
VMUTE
XOUT
34
65
12
XRESET
29
CLK
DATA
30
XIN
X501
10MHz
SHARPNESS
1315
B.P.F.
VIDEO
BUFFER
Q304
SHARPNESS
CONTROL SWITCH
Q306
VIDEO
MUTE
Q454
– 22 –
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
ALC
ROUT (L)
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
HCD-V717
• SIGNAL PATH
: PLAYBACK (DECK A)
40
(L)
36
PB-L
REC-L
G
(Page 25)
H
(Page 26)
: 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-CNT1M
CAPM-CNT2M
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
17
85
86
RV1002
TAPE SPEED
(NORMAL)
CAPSTAN
MOTOR DRIVE
Q336 – 339
CAPSTAN
MOTOR DRIVE
Q340 – 343
M
M1
(CAPSTAN)
– 23 –
– 24 –
HCD-V717
7-4. BLOCK DIAGRAM – MAIN Section –
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)
R-CH
+
LINE AMP
IC191
MUTING
Q191
REC-L
R-CH
(Page 24)
H
L
R
SUPER WOOFER
J101 (2/2)
MD/VIDEO
(AUDIO) OUT
J191
• SIGNAL PATH
: CD PLAY
: TAPE PLAY
: RECORD
FAN MOTOR
DRIVE
Q401, 402
D403
: TUNER (FM/AM)
: MIC INPUT
M
(FAN MOTOR)
D404
M401
J421
PHONES
(Page 22)
E
(Page 24)
G
J101 (1/2)
MD/VIDEO (AUDIO) IN
L
R
ANTENNA
FM 75Ω
AM
CD-L
PB-L
R-CH
FM/AM TUNER UNIT
FM ANT
FM ANT
AM ANT
ST-MUTE
STEREO
AM ANT
TUNED
ST-DIN
ST-DOUT
ST-CLK
ST-L
ST-R
ST-CE
R-CH
IN B2
68
IN C2
67
69
66
INPUT
IN A2
SELECT
IN D2
R-CH
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
IC101
SOUND
CONTROL
CIRCUIT
KEY IN2
60 5
X501
5MHz
KEY OUT
KEY IN1
75
(Page 27)
(Page 21)
(Page 27)
(Page 28)
(Page 28)
I
F
J
K
L
X502
32.768kHz
2
MIC IN
+
+
SPEANA
DATA, CLK
DATA, CLK
POWER
CD-POWER
REC
CPU
INTERFACE
DATA
CLOCK
33 32
40
VOL OUT2
LATCH
34
BASS BOOST
COMMAND
DBFB CONTROL
R-CH
CONTROL
CIRCUIT
BB B2,
BB A2
38, 39
SWITCH
Q111
BUF
OUT2
36
FEED BACK SWITCH
Q112
R-CH
MUTING
Q113
R-CH
POWER AMP
STANDBY
SWITCH
D141
IC801
Q575
+
R-CH
OVER LOAD
DETECT
Q801
+
R-CH
R-CH
DC DETECT
SWITCH
Q433, 434
-1
-2
RELAY
DRIVE
Q431
OVER LOAD
DETECT SWITCH
Q432, 437
D843
RY401
PROTECTOR
Q435, 436
+
–
+
–
TM401
SPEAKER
IMPEDANCE
USE 8 – 16Ω
L
R
58
A2
EQUALIZER
CONTROL
R-CH
GRAPHIC
CIRCUIT
REC
B2
57
F OUT2
VOL
IN2
42
VOLUME
41
CONTROL
+
SPEANA
MIXING AMP
IC102
+
R-CH
TEMPERATURE
DETECT SWITCH
Q831, 832
+5V
RESET SIGNAL
GENERATOR
IC502
RESET
SWITCH
Q501
RESET
RESET
(Page 27)
M
(Page 21)
D
DATA
CLK
MUTING CONTROL
SWITCH
Q571, 572
TH831
52 51
10
68
67
69
ST-DIN
70
TUNED
ST-DOUT
72
STEREO
ST-MUTE
66
65
ST-CE
ST-CLK
05
11
X2
X1
14
13
XT1
XT2
SYSTEM CONTROLLER
IC501 (3/3)
46 5
CD-POWER
POWER
5655
IIC-CLK
IIC-DATA
– 25 –
3
M62442-CLK
M62442-DATA
M62442-LATCH
2
DBFB-H/L
1
LINE-MUTE
100
STK-MUTE
– 26 –
16
AC-CUT
15
RESET
57
XRST
6
F-RELAY
7-5. BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –
HCD-V717
J
(Page 25)
M
(Page 26)
I
(Page 25)
DATA, CLK
RESET
SPEANA
BAND-PASS FILTER
4
LINE IN
S601
(JOG DIAL)
= ↔ +
DJ MIX
S602
VOLUME
IC603
F01
F02
F03
F04
L+R
S604 – 642,
S656 – 659
REMOTE CONTROL
RECEIVER
IC602
ROTARY
ENCODER
S601
ROTARY
ENCODER
S602
POWER
CD-POWER
OPTICAL TRANSCEIVER
FLUORESCENT INDICATOR TUBE DRIVE,
LED DRIVE, KEY CONTROL
IC601
DATA
CLK
17
16
15
14
13
05
24
23
10
34
35
36
37
32
26 – 29
33
21
22
19
20
SDA
SCL
RESET
SPEANA-1
SPEANA-2
SPEANA-3
SPEANA-4
L+R
SIRCS
JOG-A
JOG-B
VOL-A
VOL-B
KEY-0 – KEY-3
X-OUT
8
X601
8MHz
SEG1 – SEG24
54 – 69, 72 – 70, 77 – 73
53
GR13
42 – 52
GR2 – GR12
41
GR1
L.SEL
25
LED12 – LED15
79, 80, 3 – 6, 15 – 18
LED1, LED2, LED5 – LED8,
11, 12
LED9, LED10
X-IN
9
GRID DRIVE
Q621
GRID DRIVE
Q620
D+5V
Q603
Q604, 607 – 611,
Q613 – 615, 618
LED DRIVE
FLUORESCENT
INDICATOR TUBE
FL601
B+ SWITCH
Q601, 602
D610, 612, 620 – 628,
D631 – 633, 651, 652
D613 – 618
(IC381) B+
+3.3V
MPEG VIDEO/AUDIO
DECODER (IC505) B+
D+5V (UNSW)
VIDEO CD SECTION B+
D+5V (SW)
VIDEO CD SECTION B+
VCD D+5V
VIDEO CD SECTION B+
AUDIO D+5V
SYSTEM CONTROLLER
(IC501) B+
FAN MOTOR B–
(FM/AM TUNER UNIT B+)
D+5V
D405 – 407
ST+10V
SWITCH
Q907, 908
SWITCH
Q905, 906
D507
D501, 502
REGULATOR
CONTROL SWITCH
Q903
TC, PANEL, AUDIO
B+
SWITCH
Q381, 382
+3.3V
REGULATOR
Q531
B+
SWITCH
Q911, 912
B+
B+
D914
+7V
(CD M+7V)
+7V
–7V
CAPSTAN MOTOR DRIVE CIRCUIT,
TRIGGER PLUNGER DRIVE CIRCUIT B+
+10V
REGULATOR
Q909
–30V
FL DRIVER (IC601)
FLUORESCENT INDICATOR TUBE
TO
(FL601)
+5V
REGULATOR
IC904
REGULATOR
REGULATOR
REGULATOR
Q901, 902, 913
REGULATOR
Q914, 951, 952
REGULATOR
REGULATOR
POWER AMP
(IC801)
D918
+5V
IC902
+7V
IC901
+7V
–7V
+12V
IC903
–30V
Q910
VF1
VF2
B+
B–
(Page 25)
K
(Page 25)
L
RECT
D901 – 904
RECT
D907, 908
RECT
D909, 910
POWER TRANSFORMER
RECT
D800
T11
(Thai, Chinese models)
VOLTAGE
SELECT SWITCH
S11
S11
VOLTAGE
SELECTOR
AC IN
– 27 –
(Except Thai, Chinese models)
– 28 –
HCD-V717
T
• Circuit Boards Location
CD-SW board
PANEL board
TRANSFORMER board
HP board
VIDEO board
ENCAPSULATED COMPONEN
(Thai)
TUNER
(EXCEPT Thai)
POWER AMP board
MAIN board
7-6. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
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.
Note: The components identified by mark ! or dotted line
• U : B+ Line.
• V : B– Line.
• V oltages are taken with a VOM (Input impedance 10 MΩ).
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
• Abbreviation
: internal component.
with mark ! are critical for safety.
Replace only with part number specified.
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.
TH : Thai model.
4
W or less unless otherwise
Note on Printed Wiring Boards:
• X : parts extracted from the component 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.
CONNECTOR board
SENSOR board
MOTOR (TURN) board
BD board
MOTOR (SLIDE) board
AUDIO board
– 29 –
LEAF SW board
– 30 –
7-7. PRINTED WIRING BOARD – BD Section – • See page 29 for Circuit Boards Location.
HCD-V717
– 31 –
(Page 36)
• 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
– 32 –
HCD-V717
7-8. SCHEMATIC DIAGRAM – BD Section – • See page 73 for Waveforms. • See page 76 and 77 for IC Block Diagrams.
(Page 37)
– 33 –
• V oltages and wa vef orms are dc with respect to ground in
CD play mode.
no mark : CD stop
( ) : CD play
– 34 –
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
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