HCD-VZ10 - Sony Audio Service Manual (repair manual)

1

HCD-VZ10 is the tuner, deck, CD and amplifier
section in MHC-VZ10.

Model Name Using Similar Mechanism

NEW

CD Mechanism Type

CDM53F-K2BD37A

Base Unit Type

BU-K2BD37A

Optical Pick-up Type

KSM-213DAP

Model Name Using Similar Mechanism

HCD-ZX10

Tape Transport Mechanism Type

TCM-230AWR12

CD

SECTION

TAPE DECK

SECTION

E Model

The following measured at AC 120/220/240 V,
50/60 Hz
DIN power output (rated) 160 + 160 W

(6 

Ω at 1 kHz, DIN)

Continuous RMS power output (reference)

200 + 200 W
(6 

Ω at 1 kHz,

10% THD)

Inputs
VIDEO (AUDIO) IN:

voltage 250 mV,

(phono jacks)

impedance 47 k

Ω

MD IN:

voltage 450 mV,

(phono jacks)

impedance 47 k

Ω

MIC 1/2:

Sensitivity 1 mV,

(mini jack)

impedance 10 k

Ω

Outputs
MD OUT:

voltage 250 mV

(phono jacks)

impedance 1 k

Ω

VIDEO OUT:

max. output level

(phono jack)

1Vp-p, unbalanced,
Sync negative, load impedance
75 

Ω

S-VIDEO  OUT:

Y: 1Vp-p, unbalanced,

(4-pin/mini-DIN jack)

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

Ω

PHONES:

accepts headphones of

(stereo mini jack)

8 

Ω or more

FRONT SPEAKER:

accepts impedance of 6 to 16 

Ω

SURROUND SPEAKER: accepts impedance of 16 

Ω

SUPER WOOFER:

Voltage 1 V, impedance 1 k

Ω

System

Compact disc and digital audio
system

Laser

Semiconductor laser
(

λ=780nm)

Emission duration:  continuous

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.

Wavelength

780 — 

790 nm

Frequency response

2 Hz — 20 kHz (–0.5 dB)

Signal-to-noise ratio

More than 90 dB

Dynamic range

More than 90 dB

Video color system format

NTSC, PAL

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

660 nm

Output Level

—18 

dBm

Recording system

4-track 2-channel stereo

Frequency response

40 — 

13,000 Hz (–3 dB),

(DOLBY NR OFF)

using Sony TYPE I cassette
40 — 

14,000 Hz (–3 dB),

using Sony TYPE II cassette

FM stereo, FM/AM superheterodyne tuner

Tuning range                      87.5 – 108.0 MHz (50 kHz step)
Antenna

FM lead antenna

Antenna terminals

75 

Ω unbalanced

Intermediate frequency

10.7 MHz

Tuning range
Middle Eastern model:

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

2003L02-1

© 2003.12

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.

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

240 W

Dimensions (w/h/d)

Approx. 250 x 375 x 395 mm

Mass

Approx. 13.0 kg

Supplied accessories:

AM loop antenna (1)
FM lead antenna (1)
Remote Commander (1)
Batteries (2)
Video cable (1)
Speaker cords (4)
Front speaker pads (8)

Design and specifications are subject to change
without notice.

3

— BACK PANEL —

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

·········································································· 5

3-1.

Case ···················································································· 8

3-2.

Front Panel Section ···························································· 8

3-3.

Tape Mechanism Deck Section (TCM-230AWR12) and
MIC Board ·········································································· 9

3-4.

Back Panel Section ····························································· 9

3-5.

Main Board, Front AMP Board ········································ 10

3-6.

CD Base Unit (BU-K2BD37A) ········································ 10

3-7.

CD Mechanism Deck Section (CDM53F-K2BD37A) ····· 11

3-8.

Fitting Base (Guide) Assy, Bracket (Chassis) and
Fitting Base (Magnet) Assy ·············································· 11

3-9.

Tray (Sub) ········································································· 12

3-10. Chassis (Mold B) Section, Stocker Section and

Slider (Selection) ······························································ 12

3-11. Gears Installation ······························································ 13
3-12. Slider (Selection) Installation ··········································· 13
3-13. Stocker Section Installation ·············································· 14
3-14. Chassis (Mold B) Section Installation ······························ 14

···································································· 15

····························· 20

······························· 20

7-1.

Circuit Board Location ····················································· 25

7-2.

Block Diagrams ································································ 28

7-3.

Printed Wiring Board – BD Section – ······························ 32

7-4.

Schematic Diagram – BD Section – ································· 33

7-5.

Printed Wiring Board – Video Section – ·························· 34

7-6.

Schematic Diagram – Video Section (1/3) – ···················· 35

7-7.

Schematic Diagram – Video Section (2/3) – ···················· 36

7-8.

Schematic Diagram – Video Section (3/3) – ···················· 37

7-9.

Printed Wiring Board – Deck Section – ··························· 38

7-10. Schematic Diagram – Deck Section – ······························ 39
7-11. Printed Wiring Board – Main Section – ··························· 40
7-12. Schematic Diagram – Main (1/3) Section – ····················· 41
7-13. Schematic Diagram – Main (2/3) Section – ····················· 42
7-14. Schematic Diagram – Main (3/3) Section – ····················· 43
7-15. Printed Wiring Board – AMP Section – ··························· 44
7-16. Schematic Diagram – AMP Section – ······························ 45
7-17. Printed Wiring Board – Panel Section – ··························· 46
7-18. Schematic Diagram – Panel Section – ····························· 47
7-19. Printed Wiring Board  – Switch Section – ······················· 48
7-20. Schematic Diagram – Switch Section – ··························· 49
7-21. Printed Wiring Board – CD Mechanism Section – ·········· 50
7-22. Schematic Diagram – CD Mechanism Section – ············· 51
7-23. Printed Wiring Board – Power Supply Section – ············· 52
7-24. Schematic Diagram – Power Supply Section – ················ 53
7-25. Printed Wiring Board – MIC Section – ···························· 54
7-26. Schematic Diagram – MIC Section – ······························· 54
7-27. Printed Wiring Board – Leaf SW Section – ····················· 55
7-28. Schematic Diagram – Leaf SW Section – ························ 55
7-29. IC Block Diagrams ··························································· 56
7-30. IC Pin Descriptions ·························································· 58

8-1.

Back Panel Section ··························································· 69

8-2.

Front Panel Section ·························································· 70

8-3.

Chassis Section ································································· 71

8-4.

CD Mechanism Deck Section-1 (CDM53F-K2BD37A) ·· 72

8-5.

CD Mechanism Deck Section-2 (CDM53F-K2BD37A) ·· 73

8-6.

Base Unit Section (BU-K2BD37A) ································· 74

8-7.

Tape Mechanism Deck Section-1 (TCM-230AWR12) ···· 75

8-8.

Tape Mechanism Deck Section-2 (TCM-230AWR12) ···· 76

······································· 78

• Abbreviation

SP

: Singapore model

MY

: Malaysia model

HK

: Hong Kong model

TH

: Thai model

EA

: Saudi Arabia model

SP, MY models

HK model

TH model

EA model

4-226-747-3

s

4-226-747-4

s

4-226-747-5

s

4-226-747-6

s

4

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

MPEG decoder (IC505)
or
DRAM (IC507) error

CN503

CN701

Jig (J-2501-076-A)

Jig (J-2501-165-A)

Jig (J-2501-167-A)

Jig (J-2501-050-A)