Sony cdp r 1 a service manual

Page 1

SERVICE MANUAL

Model Name Using Similar Mechanism New
CD Mechanism Name CDMllG-SD
Base Unit Name BUA6D

SPECIFICATIONS

CDPvfi1a Compact Disc Player Unit
System Compact disc digital audio system
Disc Compact Disc
Data read system
Non-contact optical reading (using a
semiconductor laser)
Laser GaAlAs dual hetero-diode
(7t (wavelength) = 780 nm)
Spindle speed Approx. 200 rpm - 500 rpm (CLV)
Error correction Sony Super Strategy. Cross lnterleave
Reed Solomon code

Interlace
Type of jack
TWIN LINK TWIN LINK jack
COAXIAL (EIAJ format) Phono jack (75 ohms. 0.5 Vp-p)
OPTICAL Optical output connector

ElAJ: Electronic industry Association cl Japan

General
Power requirements
AC 220-240 V, 50/60 Hz
RAM memory storage
Held lor more than a month (after turning
the power OFF).
Power consumption
14W
Dimensions (w/h/d)
470 x125><410 mm
(185/5 x 5 x 16% inches)
(Including projecting parts and controls)
Weight Approx. 18 kg (40 lb)

RM-Ala Remote Commander (supplied)
Remote control system
lnlrared control
Power requirements
3 V DC (with two R6 (slze AA) batteries)
Dimensions 67 x 20 x 175 mm (w/h/d)
(23/4 x Its x 7 inches)
Weight 110 g (4 01)
(including batteries)

Supplied accessories

Twin Link optical cable (SOC-10) x 1
Remote control unit (RM-Ata) x 1
Sony SUM-3 (NS) battery x 2

Design and specifications subject to change without notice.

NOTE
This appliance conlorms with EEC Directives 76/889 and 82/
449 regarding interference suppression.

Optional Components:
DAS-Rta D/A Convener Unit

SAFETYARELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATlON. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

summer msc PLAYER
SONY;

Page 2

CDP-R1 a

TABLE OF CONTENTS LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Seciton m fig;
Confirm that the movement of figure B has been activated
Specification """""""""""""""""""""""""""""""""""""""""" 1 by observing the objective lens when removing the bracket
(P) when not loading a disc and the disc table is closed
I. SERVICING NOTES (Figure A) then turn on the power switch.

Notes on Handring the optical pick-up

Block or Base Unit ..........................
Notes on Laser Diode Emission check.
Laser Diode and Focus Search Operation check~
Protection of Eyes from Laser Beam

BOLT, HEXAGON SOCKET 3X5

during serVicing ........................................................ 3
2. GENERAL
Overview ..................................................................... 4

Location of controls
Connections ............

BRACKET (P)

3~ BLOCK DIAGRAMS ..................................................... 8
4. ELECTRICAL ADJUSTMENTS ................................... 11
5. DIAGRAMS
5-1. Circuit Boards Location ~~~~~~~~~ ~13
5-2. Semiconductor Lead Layouts 14
5-3. Printed Wiring Boards 16
54. Schematic Diagram ooooooooo ~21
6. EXPLODED VIEWS .................................................... 27
7. ELECTRICAL PARTS LIST ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 32
Fig. A
Optical pick~up block
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-
UP BLOCK 0R BASE UNIT
The laser diode in the optical pick-up block may
suffer electrostatic breakdown because of the poten-
tial 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 0Conhrm that laser beam 5 spread.
handled with care. OUp and down motion of the objective lens (3 times).

Fig 8

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. There-
fore, when checking the laser diode emission, observe
more than 25 cm away from the objective lens.