HCD-VX777 — Sony Audio Service Manual (repair manual)

Model
HCD-VX777
Pages
83
Size
9.63 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-vx777.pdf
Date

View Sony HCD-VX777 Service Manual online

Model Name Using Similar Mechanism
HCD-DX70
CD Mechanism Type
CDM58E-30BD61A
Base Unit Type
BU-30BD61A
Optical Pick-up Type
A-MAX.3
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
TCM-230AWR41/MWR41
HCD-VX777
SERVICE MANUAL
HCD-VX777 is the tuner, deck, CD and amplifier
section in MHC-VX777.
SPECIFICATIONS
COMPACT DISC DECK RECEIVER
— Continued on next page —
CD
SECTION
TAPE DECK
SECTION
E Model
Ver. 1.7  2004.12
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-873-850-18
2004L02-1
© 2004.12
VIDEO CD/CD player section
System
Compact disc and digital audio system
Laser
Semiconductor laser (
λ=780nm)
Laser Output
Max. 44.6 
µW*
*This output is the value measured at a 
distance of 200 mm from the objective 
lens surface on the Optical Pick-up 
Block with 7 mm aperture.
Frequency response
2 Hz — 20 kHz (–0.5 dB)
Wave length
780 — 790 nm
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Video color system format
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wave length
660 nm
Output level
—18 dBm
Tape player section
Recording system
4-track 2-channel stereo
Frequency response
40 — 13,000 Hz (–3 dB), using 
(DOLBY NR OFF*)
Sony TYPE I cassette
40 — 14,000 Hz (–3 dB), using 
Sony TYPE II cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 — 108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Latin American models:
530 — 1,710 kHz
 PAL
(with the interval set at 10 kHz)
531 — 1,710 kHz
(with the interval set at 9 kHz)
Middle Eastern models:
531 — 1,602 kHz
(with the interval set at 9 kHz)
Other models:
531 — 1,602 kHz
(with the interval set at 9 kHz)
530 — 1,710 kHz
(with the interval set at 10 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
2
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.
3
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 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
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.
4-232-028-1
s
4-232-028-5
s
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.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
4
HCD-VX777
Location of Parts and Controls
1
@/1 (POWER) button and indicator
2
DISC 1 button and indicator
3
DISC 2 button and indicator
4
DISC 3 button and indicator
5
DISC SKIP EX-CHANGE button
6
CD (OPEN) button
7
CD button and indicator
8
TUNER/BAND button and indicator
9
TAPE A/B button and indicator
q;
MD (VIDEO) button and indicator
qa
VOLUME knob
qs
PHONES jack
qd
MIC 2 jack
qf
MIC 1 jack
qg
MIC LEVEL knob
qh
ECHO level knob
qj
SURROUND speaker indicator
qk
GAME INPUT (VIDEO, AUDIO L/R) jack
ql
GAME button and indicator
w;
DISPLAY button
wa
SPECTRUM button
ws
EDIT (DIRECTION) button
wd
REPEAT (FM MODE/DOLBY NR) button
SECTION 1
GENERAL
Front Panel
wf
PLAY MODE (TUNER MEMORY) button
wg
 Remote sensor
wh
MOVIE EQ button
wj
ENTER button and indicator
wk
P FILE button
wl
M/+ button
e;
REC PAUSE/START button and indicator
ea
> button
es
CD SYNC HI-DUB button
ed
X button
ef
SURROUND button
eg
bB button
eh
x button
ej
GROOVE button
ek
. button
el
m/– button
r;
b/v/B/V button
ra
GAME EQ button
rs
KARAOKE PON button
rd
EFFECT ON/OFF button
rf
MUSIC EQ button
w; wa ws wd wf wg
1
2 3 4
56
7
9
qa
qs
8
q;
ql
qg
qd
qk
elek eh eg ed ea
wl
e;
ej
ef es
rs
rd
r;
ra
rf
wj
wk
wh
qf
qh
qj
5
HCD-VX777
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CASE (TOP)
Set
Case (Top)
Loading Panel
Front Panel Section
Tape Mechanism Deck
CD SW Board, Panel Board And PAD Switch Board
Head (A) Board, Head (B) Board And SW Board
Main Trans Board
Main Board And Power Board
Base Unit
Driver Board, Motor Board, CD Sensor Board And Video Board
• The equipment can be removed using the following procedure.
4
qs
9
8
two screws
    (+BVTP 3 
×
 10)
1
two screws (case 3 TP2)
6
two screws (case 3 TP2)
qd
case (top)
7
screw (case 3 TP2)
5
side panel (R)
0
side panel (L)
2
screw (case 3 TP2)
qa
two screws (+BVTP 3 
×
 10)
two claws 
two claws 
3
two screws 
    (+BVTP 3 
×
 10)

Download Sony HCD-VX777 Service Manual (Repair Manual)

Here you can view online or download Sony HCD-VX777 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony HCD-VX777 Audio. Information contained in Sony HCD-VX777 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).