DOWNLOAD Sony HCD-WZ5 / HCD-WZ50 / MHC-WZ5 Service Manual ↓ Size: 5.26 MB | Pages: 44 in PDF or view online for FREE

AEP Model

UK Model

E Model

Australian Model

• HCD-WZ5 is the tuner, and CD

section in MHC-WZ5.

System

Compact disc and digital 
audio system

Laser

Semiconductor laser 
(

λ=780 nm)

Emission duration: 
continuous

Frequency response

2 Hz – 20 kHz (

±0.5 dB)

Wavelength

780 – 790 nm

Signal-to-noise ratio

More than 90 dB

Dynamic range

More than 90 dB

OPTICAL CD DIGITAL OUT (European and 
Australian models only) 
(Square optical connector jack, rear panel)
Wavelength

660 nm

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range

87.5 – 108.0 MHz

antenna

FM lead antenna

antenna terminals

75 ohms unbalanced

Intermediate frequency

10.7 MHz

AM tuner section

Tuning range
European model:

531 – 1,602 kHz 
(with the tuning interval 
set at 9 kHz) 

Latin American model:

Other model:

Power requirements

Power consumption
European model:

150 watts
0.3 watts (at the Power 
Saving Mode)

Except for European model:

180 watts

Dimensions (w/h/d)
CD player/Tuner:

Approx. 255 

×  135 × 

 

355 mm

Mass
CD player/Tuner:

Approx. 2.8 kg

Design and specifications are subject to change 
without notice.

Power voltage is D 9V and fed with STEREO 
CASSETTE DECK AMPLIFIER (DXA-WZ5) 
from the external SYSTEM CONTROL connectors.

530 – 1,710 kHz
(with the tuning interval 
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval 
set at 9 kHz)
530 – 1,710 kHz 
(with the tuning interval 
set at 10 kHz)
531 – 1,602 kHz 
(with the tuning interval 
set at 9 kHz)

antenna

AM loop antenna

antenna terminals

External antenna terminal

Intermediate frequency

450 kHz 

2003K16-1

© 2003.11

Model Name Using Similar Mechanism

NEW

CD

CD Mechanism Type

CDM77B-K6BD47S

Section

Base Unit Name

BU-K6BD47S

Optical Pick-up Name

KSM-213D

2

Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

• 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.

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

2-1. Case ··············································································· 7
2-2. Front Panel Assy ··························································· 8
2-3. PANEL Board, CD-TC-SW Board, ENTER-SW

Board, BACK-LIGHT Board, LCD Board ··················· 8

2-4. Tuner (FM/AM), WOOFER Board ······························ 9
2-5. MAIN Board, REGULATOR Board, HP-AMP Board ··· 9
2-6. CD mechanism deck (CDM77B-K6BD47S) ·············· 10
2-7. Tray (AU) ···································································· 10
2-8. MS-128 Board ···························································· 11
2-9. Base Unit (BU-K6BD47S) ········································· 11
2-10. CD Board, Optical Pick-Up Block (KSM-213D) ······· 12

······························· 13

···································································· 14

5-1. Circuit Boards Location ·············································· 15
5-2. Block Diagrams - Main Section - ······························· 16
5-3. Printed Wiring Board - CD Board - ···························· 17
5-4. Schematic Diagram - CD Board - ······························· 18
5-5. Printed Wiring Board - MAIN Section- ······················ 19
5-6. Schematic Diagram

- MAIN Section (1/2) - ··········· 20
- MAIN Section (2/2) - ··········· 21

5-7. Printed Wiring Board - PANEL Board - ····················· 22
5-8. Schematic Diagram - PANEL Board - ························ 23
5-9. Printed Wiring Board - LCD/SWITCH Section - ······· 24
5-10. Schematic Diagram - LCD/SWITCH Section - ·········· 25
5-11. Printed Wiring Board - REGULATOR Board - ·········· 26
5-12. Schematic Diagram - REGULATOR Board - ············ 27
5-13. IC Block Diagrams ····················································· 28
5-14. IC Pin Function Description ······································· 29

6-1. Front Panel Section ····················································· 31
6-2. Chassis Section ···························································· 32
6-3. CD Mechanism Deck Section ····································· 33
6-4. Optical Pick-up Section (KSM-213D) ························ 34

······································· 35

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.

This appliance is
classified as a CLASS 1
LASER product. This
label is located on the
rear exterior.

The following caution label is located inside the apparatus.

3

0

0

— BACK PANEL —

• Abbreviation

AUS

: Australian model

E2

: 120V AC Area in E model

E3

: 240V AC Area in E model

KR

: Korean model

TW

: Taiwan model

PARTS No.

Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)

Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40

°C higher than

ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350

°C.

Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

In case of repairing, please bring the entire system set([HCD-WZ5,
DXA-WZ5],except for the speaker) to the service station.

AEP, UK models

E2, E3 models

AUS model

KR, TW models

4-244-440-0

s

4-244-440-1

s

4-244-440-2

s

4-244-440-7

s

4

This section is extracted
from instruction manual.

CD 5 (9, 10, 17, 18)
CD SYNC 9 (17)
Control lever 7 (7, 20)
DIMMER w; ( 24)
Disc tray ws
DISPLAY ql (15, 23, 24)
Display window wa 
EQ EDIT qk (20, 29)
GROOVE 7 (19)
Headphone jack qs 

MD (VIDEO) 2 (26)
MOVIE MODE 7 (19)
MUSIC MODE 7 (19, 20)
PLAY MODE/DIRECTION qg 

(9, 10, 16, 17, 18, 30)

PUSH ENTER 7 (8, 10, 12, 20, 

21, 22)

Remote sensor qd
REPEAT/FM MODE qh (10, 14)
SURROUND 7 (20)
TAPE A/B 3 (16, 17, 18)
TUNER MEMORY qf (12)
TUNER/BAND 6 (12, 13, 18)
TUNING MODE qj (12, 13)
VOLUME qa (21)

?/1 (power) 1 (7, 13, 21, 29)
X (pause) 4 (9, 16)
nN (play) 4 (9, 16, 17)
x (stop) 4 (7, 9, 13, 16, 17, 29)
+M> (fast forward/go 

forward) 4 (8, 9, 12, 16, 21, 
30)

.m– (rewind/go back) 4 

(8, 9, 12, 16, 21)

Z (open/close) 8 (8)
z START q; (17, 18)

CD player/Tuner