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COMPACT DISC PLAYER
Model Name Using Similar Mechanism
CD Mechanism Type
Base Unit Name
Optical Pick-up Name
Compact Disc Player
Semiconductor laser (
= 780 nm)
Emission duration: continuous
Max 44.6 mW*
* 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.
2 Hz to 20 kHz ± 0.3 dB
More than 117 dB
More the 99 dB
Less than 0.0025%
More than 110dB
Over 10 kilohms
(at 50 kilohms)
120 V AC, 60 Hz
220 V 230 V AC, 50/60 Hz
110 V 120 V AC or 220 V 240 V AC
adjustable, 50/60 Hz
× 125 × 400 mm
× 5 × 15 3/4 in.) incl. projecting parts
7 kg (15 lbs 7 oz)
Audio cord (2 phono plugs2 phono plugs) (1)
Remote commander (remote) (1)
Sony SUM-3 (NS) batteries (2)
Design and specifications are subject to change without notice.
-- 2 --
GENERAL ······································································ 7
Front Panel ······································································· 11
Disc Table Assy ································································ 11
Back Panel and Disc Table ··············································· 12
Optical Pick-up Block Assembly ····································· 12
Bracket (Gear) Assembly ················································· 13
TEST MODE ································································ 14
ELECTRICAL BLOCK CHECKING ···················· 17
Circuit Boards Location ··················································· 19
Block Diagram ································································· 21
Schematic Diagram -- BD Section -- ····························· 23
Printed Wiring Board -- BD Section -- ·························· 25
Printed Wiring Board -- Main Section -- ······················· 27
Schematic Diagram -- Main Section (1/2)-- ·················· 29
Schematic Diagram -- Main Section (2/2)-- ·················· 31
Schematic Diagram -- HP/Function Section -- ·············· 33
Printed Wiring Board -- HP/Function Section -- ··········· 34
5-10. Schematic Diagram -- Display Section -- ······················ 35
5-11. Printed Wiring Board -- Display Section -- ··················· 37
5-12. IC Block Diagrams ··························································· 39
5-13. IC Pin Functions ······························································· 42
Front Panel and Case Section ··········································· 46
Back Panel and Disc Table Section ·································· 47
Chassis Section ································································· 48
Base Unit Section (BU-5BD22) ······································· 49
ELECTRICAL PARTS LIST ··································· 50
TABLE OF CONTENTS
-- BACK PANEL --
-- 3 --
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
! OR DOTTED LINE WITH
! 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.
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, "metallized" knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers' instructions to use these
A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The "limit" indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
To Exposed Metal
Parts on Set
Fig. A. Using an AC voltmeter to check AC leakage.
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 difference 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
The flexible board is easily damaged and should be handled with
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 30 cm away from the objective lens.
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
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
· 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
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
PRODUCT MARKING is
located on the rear exterior.
inside of the
-- 4 --
HOW TO OPEN THE DISC TRAY WHEN POWER
SWITCH TURNS OFF
NOTE FOR MAIN GEAR INSTALLATION
Insert a tapering driver into the aperture of the unit bottom, and turn in
the direction of arrow (to OUT direction).
* To close the disc tray, turn driver in the reverse direction
(to IN direction).
5 Stopper washer (5)
3 Rotate the GEAR (U/D)
to the arrow
4 Install the MAIN GEAR
as show in the drawing.
2 Slide the SET LEVER to the
1 Set the mark of