Sony HCD-VX99 / MHC-VX99 Service Manual ▷ View online
2
General
Power requirements
120 V, 220 V or 230 - 240
V AC, 50/60 Hz
Adjustable with voltage
selector
V AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption
300 W
Dimensions (w/h/d)
Approx. 280 x 360 x 425
mm (11 x 14
mm (11 x 14
3
/
16
x 16
11
/
16
in.)
Mass:
Approx. 11 kg
(24 lb. 5 oz)
(24 lb. 5 oz)
Supplied accessories:
AM loop antenna (1)
Remote commander (1)
Batteries (2)
Video cable (1)
FM lead antenna (1)
Front speaker pads (8)
Remote commander (1)
Batteries (2)
Video cable (1)
FM lead antenna (1)
Front speaker pads (8)
Design and specifications are subject to change
without notice.
without notice.
TABLE OF CONTENTS
1. SERVICE NOTE
······························································· 4
2. GENERAL
·········································································· 5
3. DISASSEMBLY
································································ 7
4. TEST MODE
···································································· 12
5. MECHANICAL ADJUSTMENTS
····························· 17
6. ELECTRICAL ADJUSTMENTS
······························· 17
7. DIAGRAMS
7-1.
Circuit Board Location ····················································· 23
7-2.
Block Diagrams ································································ 25
7-3.
Printed Wiring Board – BD Section – ······························ 28
7-4.
Schematic Diagram – BD Section – ································· 29
7-5.
Printed Wiring Board – Video Section – ·························· 30
7-6.
Schematic Diagram – Video (1/3) Section – ···················· 31
7-7.
Schematic Diagram – Video (2/3) Section – ···················· 32
7-8.
Schematic Diagram – Video (3/3) Section – ···················· 33
7-9.
Printed Wiring Board – Main Section – ··························· 34
7-10. Schematic Diagram – Main (1/3) Section – ····················· 35
7-11. Schematic Diagram – Main (2/3) Section – ····················· 36
7-12. Schematic Diagram – Main (3/3) Section – ····················· 37
7-13. Printed Wiring Board – Power AMP Section – ················ 38
7-14. Schematic Diagram – Power AMP Section – ··················· 39
7-15. Printed Wiring Board – Panel Section – ··························· 40
7-16. Schematic Diagram – Panel Section – ····························· 41
7-17. Printed Wiring Board – Leaf SW Section – ····················· 42
7-18. Schematic Diagram – Leaf SW Section – ························ 43
7-19. Printed Wiring Board – Driver Section – ························· 44
7-20. Schematic Diagram – Driver Section – ···························· 45
7-21. Printed Wiring Board – Trans Section – ··························· 46
7-22. Schematic Diagram – Trans Section – ····························· 47
7-23. IC Pin Function ································································ 48
7-24. IC Block Diagrams ··························································· 57
7-11. Schematic Diagram – Main (2/3) Section – ····················· 36
7-12. Schematic Diagram – Main (3/3) Section – ····················· 37
7-13. Printed Wiring Board – Power AMP Section – ················ 38
7-14. Schematic Diagram – Power AMP Section – ··················· 39
7-15. Printed Wiring Board – Panel Section – ··························· 40
7-16. Schematic Diagram – Panel Section – ····························· 41
7-17. Printed Wiring Board – Leaf SW Section – ····················· 42
7-18. Schematic Diagram – Leaf SW Section – ························ 43
7-19. Printed Wiring Board – Driver Section – ························· 44
7-20. Schematic Diagram – Driver Section – ···························· 45
7-21. Printed Wiring Board – Trans Section – ··························· 46
7-22. Schematic Diagram – Trans Section – ····························· 47
7-23. IC Pin Function ································································ 48
7-24. IC Block Diagrams ··························································· 57
8. EXPLODED VIEWS
8-1.
Main Section ····································································· 61
8-2.
Panel Section ···································································· 62
8-3.
Main Board Section ·························································· 63
8-4.
Tape Mechanism Deck Section ········································ 64
8-5.
CD Mechanism Deck Section (CDM58-K2BD37A) ······· 65
8-6.
Base Unit Section (BU-K2BD37A) ································· 66
9. ELECTRICAL PARTS LIST
······································· 67
3
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
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.
of emitting radiation exceeding the limit for
Class 1.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• 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
• 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.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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.
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.
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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 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.
MARK 0 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.
4
SECTION 1
SERVICE NOTE
Screw hole
Attach the panel board with
six screws (+BVTP 2.6
six screws (+BVTP 2.6
× 8 )
after the board is removed once.
Do not tighten the screws excessively.
Do not tighten the screws excessively.
1
Cut the eleven melted-connection points with a cutting plier.
Note for installing the panel board
2
Panel board
Hot melt
SELF-DIAGNOSIS
This model has the self-diagnosis function for the VIDEO and AUDIO decoder sections.
Connecting to the LED between TP522 and TP523 on the VIDEO BOARD.
Immediately after the power on, the self-diagnosis function searches each operation of IC’s around the mechanism control microcomputer
(IC701). and TP5
The results can be checked by LED of the VIDEO board.
This model has the self-diagnosis function for the VIDEO and AUDIO decoder sections.
Connecting to the LED between TP522 and TP523 on the VIDEO BOARD.
Immediately after the power on, the self-diagnosis function searches each operation of IC’s around the mechanism control microcomputer
(IC701). and TP5
The results can be checked by LED of the VIDEO board.
Oscilloscope (Waveform)
Symptom
No error
MPEG decoder (IC505)
error
error
MPEG decoder (IC505)
or
DRAM (IC507) error
or
DRAM (IC507) error
[VIDEO BOARD] (SIDE A)
H
L
Light
2 time blinking
H
L
H
L
3 time blinking
TP523 TP522
LED
IC505
100
91
33
64
90
65
1
32
5
SECTION 2
GENERAL
1
DISC SKIP EX-CHANGE button
2
DISC 1 button and indicator
3
DISC 2 button and indicator
4
DISC 3 button and indicator
5
Z OPEN/CLOSE button
6
PREV button
7
NEXT button
8
RETURN button
9
EDIT, TUNER MOMERY button
q;
PLAY MODE, STEREO/MONO button
qa
REPEAT, DOLBY NR button
qs
DIRECTION button
qd
VOLUME knob
qf
PHONES jack
qg
ENTER button
qh
REC PAUSE/START button and indicator
qj
CD SYNC HI-DUB button
qk
KARAOKE PON/MPX button
ql
MIC1, MIC2 jack
w;
MIC LEVEL knob
wa
ECHO LEVEL knob
ws
EQ EDIT button
wd
SPECTRUM button
wf
DISPLAY button
wg
?/1 button and indicator
wh
Function indicator
wj
TUNER/BAND button
wk
CINEMA SPACE button
wl
MD (VIDEO) button
e;
gG/SELECT button
ea
> + button
es
X button
ed
– . button
ef
x button
eg
V-GROOVE button and indicator
eh
PICTURE EFFECT button
ej
CURSOL button and indicator
ek
GROOVE button
el
TAPE A/B button
r;
CD button
1
2 3 4
5 6
7
qd
qf
qg
qh
el
ed
r;
ef
wh
wj
wk
ea
8
qa
qs
9
q;
es
ej
qk qj
ws
wd
wf
wg
w;
ql
wa
ek
eg
eh
wl
e;
