DOWNLOAD Sony MHC-VX333 (serv.man2) Service Manual ↓ Size: 12.12 MB | Pages: 70 in PDF or view online for FREE

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Power requirements
Thai model:

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

190 watts

Dimensions (w/h/d)

Approx. 280 

× 325 × 421 mm

Mass

Approx. 10.5 kg

Supplied accessories:

AM loop antenna (1)
Remote Commander (1)
Batteries (2)
FM lead antenna (1)
Speaker pads (8)
Video cable (1)

Design and specifications are subject to change
without notice.

3

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.

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.

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.

— BACK PANEL —

E, EA, IA, JE, SP, TW models

TH model

4-234-091-3s

4-234-091-9s

• Abbreviation

MY

: Malaysia model.

SP

: Singapore model.

TH

: Thai model.

EA

: Saudi Arabia model.

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6-1. Circuit Board Location ················································ 19
6-2. Block Diagrams  Tuner/CD Section ···························· 21

Main Section ······························································· 22
Video CD Section ························································ 23

6-3. Printed Wiring Board  –Main Board– ························· 24
6-4. Schematic Diagram  –Main Board (1/4)– ··················· 25
6-5. Schematic Diagram  –Main Board (2/4)– ··················· 26
6-6. Schematic Diagram  –Main Board (3/4)– ··················· 27
6-7. Schematic Diagram  –Main Board (4/4)– ··················· 28
6-8. Printed Wiring Board  –BD Board– ···························· 29
6-9. Schematic Diagram  –BD Board– ······························· 30
6-10. Printed Wiring Board  –Power AMP Board– ·············· 31
6-11. Schematic Diagram  –Power AMP Board– ················· 32
6-12. Printed Wiring Board  –Panel Section– ······················· 33
6-13. Schematic Diagram  –Panel Section– ························· 34
6-14. Printed Wiring Board  –Key Board– ··························· 35
6-15. Schematic Diagram  –Key Board– ······························ 36
6-16. Printed Wiring Board  –Video CD Board– ·················· 37
6-17. Schematic Diagram  –Video CD Board (1/2)– ············ 38
6-18. Schematic Diagram  –Video CD Board (2/2)– ············ 39
6-19. Printed Wiring Board  –Driver Section– ····················· 40
6-20. Schematic Diagram  –Driver Section– ························ 41
6-21. Printed Wiring Board  –Trans Section– ······················· 42
6-22. Schematic Diagram  –Trans Section– ························· 43
6-23. IC Pin Function Description ········································ 44
6-24. IC Block Diagrams ······················································ 48

7-1. Main Section ······························································· 52
7-2. Front Panel Section ····················································· 53
7-3. Main Board Section ····················································· 54
7-4. CD Mechanism Deck Section ····································· 55

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JE

: Tourist model.

IA

: Indonesian model.

TW

: Taiwan model.

4

1

Connector 

      13p (CN712)

2

Cut the seven melted-connection points

     with a cutting plier.

4

Cut the six melted-connection points

     with a cutting plier.

3

Panel board

5

Key board

Panel board
(eleven screw holes)

Key board
(eight screw holes)

Screw hole

In order to re-install the panel board and the key board,
fix them by using the screws (+BVTP 2.6

 

× 

8 ) respectively.

Screw in to the respective screw holes.
Do not tighten the screws excessively.

* The panel board and the key board only are connected to the front panel
  by means of hot-melting the plastics.

Hot melt

5

This section is extracted
from instruction manual.

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1 2 3 4

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AUDIO jacks eg (30)
CD qd (10 – 13, 22, 23)
CD SYNC wg (22, 23)
Deck A ea (20, 21)
Deck B wa (20 – 24)
DIRECTION 8 (21 – 23, 27)
DISC 1 – 3 ws (10, 11, 13)
DISC SKIP EX-CHANGE ed

(10, 11, 13)

Disc tray 9 (10)
DISPLAY 8 (9, 14)
ECHO LEVEL control wk (27)
EDIT 8 (23)
EFFECT ON/OFF 4

(25, 27)

ENTER qa (9, 13, 14, 18, 19,

23 – 25, 28, 29, 35)

GAME ej (26, 30)
GAME EQ 2 (24, 26)
GROOVE 5 (24)
KARAOKE PON ef (27)

MD (VIDEO) qh (30)
MIC 1, 2 jack es (26, 27)
MIC LEVEL control wl (26, 27)
MOVIE EQ q; (24, 25)
MUSIC EQ 7 (24, 25)
P FILE qs (25)
PHONES jack ql
PICTURE EFFECT 3 (18)
PLAY MODE 8 (10 – 12)
REC PAUSE/START wf (22, 23)
REPEAT 8 (11)
SPECTRUM 8 (26)
STEREO/MONO 8 (20)
TAPE A/B qg (20, 22)
TUNER MEMORY 8 (19)
TUNER/BAND qf (19, 22)
VIDEO jack eh (30)
VOLUME control qj

?/1 (power) 1
v/V/b/B 6
Z OPEN/CLOSE qk
Z (deck B) w;
M (fast forward) wd
+ wd
. (go back) wh
> (go forward) wh
X (pause) wh
hH (play) wh
x (stop) wh
m (rewind) wj
– wj
Z (deck A) e;