HCD-VX555, HCD-VX555J, MHC-VX555, MHC-VX555J - Sony Audio Service Manual (repair manual)

E Model

HCD-VX555/VX555J

Tourist Model

HCD-VX555J

2003J16-1

© 2003.10

• HCD-VX555/VX555J are the tuner,

deck, CD and amplifier section in
MHC-VX555/VX555J.

— Continued on next page —

Photo : HCD-VX555

Model Name Using Similar Mechanism

NEW

CD

CD Mechanism Type

CDM58E-30BD61A

Section

Base Unit Name

BU-30BD61A

Optical Pick-up Name

A-MAX.3

Model Name Using Similar Mechanism

NEW

Tape deck

TCM-230AWR41C

Section

Tape Transport Mechanism Type

TCM-230MWR41C

TCM-230PWR41C

CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wave length

660 nm

Output level

–18 dBm

The following measured at AC 120, 220, 240V,
50/60 Hz
DIN power output (rated) 100 + 100 watts

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference)

140 + 140 watts
(6 ohms at 1 kHz, 10%
THD)

Inputs
GAME (VIDEO):

1 Vp-p, 75 ohms

(phono jack)
GAME (AUDIO):

Voltage 250 mV,

(phono jacks)

impedance 47 kilohms

MD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV,
(phono jacks)

impedance 47 kilohms

MIC 1/2:

sensitivity 1 mV,

(phone jack)

impedance 10 kilohms

Outputs
VIDEO OUT:

max. output level 1 Vp-p,

(phono jacks)

unbalanced, Sync.
negative load impedance
75 ohms

S. VIDEO OUT:

Y: 1 Vp-p, unbalanced

(4 pin/mini-DIN jack)

Sync negative
C: 0.286 Vp-p, load
impedance 75 ohms

AUDIO OUT:

Voltage 140 mV,

(phono jack)

impedance 47 kilohms.

PHONES:

accepts headphones of 8

(stereo mini jack)

ohms or more

FRONT SPEAKER:

accepts impedance of 6 to
16 ohms

SURROUND SPEAKER: accepts impedance of

24 ohms or more

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 NTSC, PAL

2

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.

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.

Recording system

4-track 2-channel stereo

Frequency response

40 – 13,000 Hz (

±

3 dB),

using Sony TYPE I
cassette

Wow and flutter

±

0.15% W.Peak (IEC)

0.1% W.RMS (NAB)

±

0.2% W.Peak (DIN)

FM stereo, FM/AM superheterodyne tuner

Tuning range

87.5 – 108.0 MHz

Antenna

FM lead antenna

Antenna terminals

75 ohm unbalanced

Intermediate frequency

10.7 MHz

Tuning range
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

Power requirements

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

270 watts

Dimensions (w/h/d)

Approx. 280 x 360 x 425
mm

Mass :

Approx. 9.5 kg

Supplied accessories:

AM loop antenna (1)
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.

3

·········································································· 4

································································ 6

···································································· 12

····························· 15

······························· 15

6. DIAGRAMS ·······························································

21

6-1. Circuit Board Location ················································· 22
6-2. Block Diagrams ···························································· 24
6-3. Printed Wiring Board    Main Section ·························· 27
6-4. Schematic Diagram    Main Section (1/4) ···················· 28
6-5. Schematic Diagram    Main Section (2/4) ···················· 29
6-6. Schematic Diagram    Main Section (3/4) ···················· 30
6-7. Schematic Diagram    Main Section (4/4) ···················· 31
6-8. Printed Wiring Board    BD Section ····························· 32
6-9. Schematic Diagram    BD Section ································ 33
6-10. Printed Wiring Board    AMP Section ························· 34
6-11. Schematic Diagram    AMP Section ··························· 35
6-12. Printed Wiring Board    Panel Section ························ 36
6-13. Schematic Diagram    Panel Section ··························· 37
6-14. Printed Wiring Board    Panel SW Section ················· 38
6-15. Schematic Diagram    Panel SW Section ···················· 39
6-16. Printed Wiring Board    Leaf SW Section ··················· 40
6-17. Schematic Diagram    Leaf SW Section ····················· 41
6-18. Printed Wiring Board    Driver Section ······················· 42
6-19. Schematic Diagram    Driver Section ························· 43
6-20. Printed Wiring Board    Video Section ························ 44
6-21. Schematic Diagram    Video Section (1/3) ·················· 45
6-22. Schematic Diagram    Video Section (2/3) ·················· 46
6-23. Schematic Diagram    Video Section (3/3) ·················· 47
6-24. Printed Wiring Board    Trans Section ························ 48
6-25. Schematic Diagram    Trans Section ··························· 49
6-26. Printed Wiring Board    Switch Section ······················ 50
6-27. Schematic Diagram    Switch Section ························· 50
6-28. IC Pin Function Description ······································· 51
6-29. IC Block Diagrams ····················································· 58

7-1. Cabinet Section ····························································· 60
7-2. Front Panel Section ······················································· 61
7-3. MAIN Board Section ···················································· 62
7-4. Tape Mechanism Section-1(TCM-230MWR41C) ······· 63
7-5. Tape Mechanism Section-2(TCM-230AWR41C) ········ 64
7-6. Tape Mechanism Section-3

(TCM-230PWR41C)(1/2) ············································ 65

7-7. Tape Mechanism Section-4

(TCM-230PWR41C)(2/2) ············································ 66

7-8. CD Mechanism Deck Section (CDM58E-30BD61A) ·· 67
7-9. Base Unit Section (BU-30BD61A) ······························ 68

······································· 69

4

This section is extracted from
instruction manual.

The items are arranged in alphabetical order. Refer to the pages indicated in parentheses ( ) for
details.

1

2

3

4

5

6

7

8

9

0

L

K

M

N

O

P

Q

R

T

U

V

W

S

X

wg

wh

wj

wl

ea es ed

rd

rs

ra r; el

eg

ej

eh

ek

rf

e;

CD 6 (8, 10~12, 20, 21)
CD SYNC HI-DUB qj (20, 21)
CINEMA SPACE el (24)

DECK A Z wf (19, 20)
DECK B Z qd (19, 20)
DIRECTION ed (19~21, 26)
DISC 1~3 2 (10, 12, 13, 21)
DISC SKIP/EX-CHANGE 4

(10~13, 16)

Disc tray 3 (9)
DISPLAY ea (9, 14, 31)

ECHO LEVEL wj (25)
EDIT ws (21)
ENTER ej (9, 11~13, 16, 17, 22,

24, 32)

EFFECT ON/OFF rd (23, 25)

FM MODE ef (18, 32)

GAME e; (28)
GAME EQ rs (7, 23, 28)
GROOVE ra (23)

KARAOKE PON wl (25)

MD (VIDEO) 9 (28, 31)
MIC 1/2 wg (25)
MIC LEVEL wh (25)
MOVIE EQ eh (7, 23, 28)
MUSIC EQ rf (7, 23, 28)

P FILE ek (24)
PICTURE EFFECT wd (16)
PHONES jack qs

: Connect the headphones

PLAY MODE eg (10, 11, 13, 21,

32)

REC PAUSE/START qg (20, 21,

26)

REPEAT ef (11, 12)

SHUTTLE qa (11, 12)
SPECTRUM es (25)

TAPE A/B 8 (19, 20, 26)
TUNER/BAND 7 (17, 18)
TUNER MEMORY eg (17)

VOLUME control q; (25, 27)

: Adjusts the volume.

@/1 (power) 1 (7, 8, 9, 17, 28,

31, 32)

Z OPEN/CLOSE (disc tray)

5 (10, 11, 13)

x (stop) w; (10~12, 15, 16, 19,

20, 32)

nN (play) ql (10~13, 15, 16,

20, 26)

> (go forward) qh (10~13,

17~20)

X (pause) qk (7, 10, 12, 19, 20)
. (go back) wa (7, 10~13,

17~20)

m/– (rewind) ws (11, 12,

17~20, 32)

M/+ (fast forward) qf (11, 12,

17~20)

v/V/b/B (cursor) r; (8, 9, 21,

24, 27)