Sony cdp h 4700 service manual

Page 1

_CDP-H47i]0

SERVICEMAN'UAL' mm,

E Model
Austral/an Model
Tourist Model

This set is the CD player section
in FH-E858, MHc-47oo.

Model Name Using Similar Mechanism CDP~H37OO
CD Mechanism Type CDMl3BA-SBD3
Optical Pick-Up Block Type BU-SBDB
SPECIFICATIONS For the European
cou ntries.
System Compact disc digital audio
system
Laser Semiconductor laser CLASS 1 LASER PRODUCT
(/1 780 nm) LUOKAN 1 LASERLNIE
Emission duration: Kuss 1 LASERAPPARAT
continuous
Laser output . Max. 44s uw-
' This output is the value
measu at 5 d'same °' This appliance is classified as 3 CLASS 1
about 200 mm tram the SER d Th C ASS 1 ER
objective lens surface on LA pro "5 e L LAS
the Optical Pick-up Block. PRODUCT label is located on the rear
Signal to noise ratio exterior.

More than 90 dB
Dynamic range More than 90 dB
Harmonic distortion Less than 0.05% (at 1 kHz)
Channel separation More than 90 as

Output level 2 V (at 50 kliohms)
Load impedance More than 10 kllohrns
Outputs DIGITAL OUT OPTICAL SAFETY-RELATED COMPONENT WARNINGI!

(optical output connector):
wave length 660 nm.
output level -18 dBm

Design and specifications subject to change
without notice.

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A 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 PUB-
LISHED BY SONY.

COMPACT Disc PLAYER
S ONY;

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CDP-H4700

TABLE OF CONTENTS

Section Title nge
1. GENERAL
1-1. Parts Identification ......................... 3

2. TEST MODES
2-1. Test Mode of Display Microcomputer (IC401) . . . .4
2-2. Test Mode of CD System Controller (IC202) ...... 4

3. ELECTRICAL BLOCK CHECKING ................ 5

4. DIAGRAMS
4-1. Pin Description ..
4-2, Block Diagram ..............
4-3. Printed Wiring Boards .......
4-4, Schematic Diagram ...........
4-5. Semiconductor Lead Layouts .................. 22

5. EXPLODED VIEWS

51. Chassis ...................................... 23
5.2. CD Block (CDM13BA-5BD3) .................. 24
5-3. Optical Pick~Up Block (BU-5BD3) .............. 25
6. ELECTRICAL PARTS LIST ...................... 26

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer
electrostatic breakdown because of the potential diference
generated by the charged electrostatic load, etc. on clothing
and the human body.

During repair, pay attention to electrostatic breakdown 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 30cm away from the
objective lens.

LASER DIODE AND FOCUS SERCH OPERATION CHECK

1. Make POWER switch on with no disc inserted and disc
table closed.

2. Confirm that the following operation is performed while
observing the objective lens.

ltfio
1%

E-

Soul

0 Confirm that laser beam is spread.
0Up and down motion of the objective lens, (3 times)