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Extracted text from sony hcd vx 777 service manual (Ocr-read)
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HCD-VX777
TABLE OF CONTENTS
1. GENERAL
··········································································4
2. DISASSEMBLY
2-1. Case (Top)··········································································5
2-2. Loading PANEL·································································6
2-3. Front PANEL Section·························································6
2-4. Tape Mechanism Deck·······················································7
2-5. CD SW Board, PANEL Board, Pad Switch Board·············7
2-6. MAIN Trans Board·····························································8
2-7. MAIN Board, Power Board················································8
2-8. LEAF SW Board, Head (A) Board, Head (B) Board·········9
2-9. Base Unit············································································9
2-10. DRIVER Board, Motor Board, CD Sensor Board and
VIDEO Board···································································10
3. TEST MODE ····································································11
4. MECHANICAL ADJUSTMENTS ·····························13
5. ELECTRICAL ADJUSTMENTS ·······························13
6. DIAGRAMS
6-1. Circuit Board Location·····················································19
6-2. Block Diagrams································································21
6-3. Schematic Diagram -“ BD Section -“ ·································24
6-4. Printed Wiring Board -“ BD Section -“ ······························25
6-5. Printed Wiring Board -“ VIDEO Section -“ ·······················26
6-6. Schematic Diagram -“ VIDEO (1/3) Section -“ ·················27
6-7. Schematic Diagram -“ VIDEO (2/3) Section -“ ·················28
6-8. Schematic Diagram -“ VIDEO (3/3) Section -“ ·················29
6-9. Printed Wiring Boards -“ MAIN Section -“ ·······················30
6-10. Schematic Diagram -“ MAIN (1/4) Section -“ ···················31
6-11. Schematic Diagram -“ MAIN (2/4) Section -“ ···················32
6-12. Schematic Diagram -“ MAIN (3/4) Section -“ ···················33
6-13. Schematic Diagram -“ MAIN (4/4) Section -“ ···················34
6-14. Schematic Diagram -“ SWITCH Section -“ ·······················35
6-15. Printed Wiring Boards -“ SWITCH Section -“ ···················35
6-16. Printed Wiring Boards -“ POWER AMP Section -“ ···········36
6-17. Schematic Diagram -“ POWER AMP Section -“ ···············37
6-18. Printed Wiring Boards -“ PANEL Section -“ ······················38
6-19. Schematic Diagram -“ PANEL Section -“ ··························39
6-20. Printed Wiring Boards -“ CD SW/PAD Section -“ ·············40
6-21. Schematic Diagram -“ CD SW/PAD Section -“ ·················41
6-22. Printed Wiring Boards -“ LEAF SW Section -“ ·················42
6-23. Schematic Diagram -“ LEAF SW Section -“ ·····················43
6-24. Printed Wiring Boards -“ DRIVER Section -“ ···················44
6-25. Schematic Diagrams -“ DRIVER Section -“ ······················45
6-26. Printed Wiring Boards -“ TRANS Section -“ ·····················46
6-27. Schematic Diagram -“ TRANS Section -“ ·························47
6-28. IC Pin Functions·······························································48
6-29. IC Block Diagrams···························································57
7. EXPLODED VIEWS
7-1. MAIN Section··································································61
7-2. Front PANEL Section·······················································62
7-3. Chassis Section·································································63
7-4. Tape Mechanism Section-1 (TCM-230MWR41)·············64
7-5. Tape Mechanism Section-2 (TCM-230AWR41)··············65
7-6. CD Mechanism Deck Section (CDM58E-30BD61A)·····66
7-7. Base Unit Section (BU-30BD61A)··································67
8. ELECTRICAL PARTS LIST ·······································68
General
Power requirements
Australian models: 230 - 240 V AC,
50/60 Hz
Mexican models: 120 V AC, 60 Hz
Thailand models: 220 V AC, 50/60 Hz
Other models: 120 V, 220 V or
230 - 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption
HCD-VX777 250 watts
Dimensions (w/h/d)
HCD-VX777 Approx. 280 x 360 x 425 mm
Mass :
HCD-VX777 Approx. 11 kg
Supplied accessories: AM loop antenna (1)
Remote commander (1)
Batteries (2)
Video cable (1)
FM lead antenna (1)
Front speaker pads (8)
(MHC-VX777 only)
Design and specifications are subject to change without notice.
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HCD-VX777
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.
CAUTION
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
damaged by heat.
Flexible Circuit Board Repairing
Keep the temperature of soldering iron around 270ËšC
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
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
MODEL IDENTIFICATION
- BACK PANEL - PARTS No.
-Abbreviation
EA : Saudi Arabia model
IA : Indonesian model
SP : Singapore model
TH : Thai model
MODEL
E, EA, SP, IA models
TH model
PARTS No.
4-232-028-1s
4-232-028-5s
SETTING THE TIME
This section is extracted
from instruction manual.
1 Turn on the system.
2 Press CLOCK/TIMER SET on the
remote.
When you set the time for the first time,
proceed to step 5.
3 Press cursor V/v repeatedly to select
CLOCK SET.
4 Press ENTER.
5 Press cursor V/v repeatedly to set the
hour.
6 Press ENTER.
7 Press cursor V/v repeatedly to set the
minute.
8 Press ENTER.
The clock starts working.
If you have made a mistake or want to change the
time, start over from step 2.
NoteThe clock settings are canceled when you disconnect
the power cord or if a power failure occurs.