Sony CDPXA-50-ES Service manual
CDP-XA50ES
SERVICE MANUAL
Photo: Black
AEP Model
E Model
Model Name Using Similar Mechanism NEW
CD Mechanism Type
Base Unit Name BU-12B
Optical Pick-up Name KSS-273B/J1N
CDM32BB-12B (BLACK)
CDM32BN-12B (GOLD)
SPECIFICATIONS
– Continued on next page –
MICROFILM
COMPACT DISC PLAYER
MODEL IDENTIFICATION
– BACK PANEL –
4-986-742-
AEP Model : 1 π (CED)
Singapore Model : 2
π
TABLE OF CONTENTS
1. SERVICING NOTES
1-1. How to Open the Disc Tray When Power Switch
Turns Off.......................................................................... 3
1-2. Preparation for Adjustment and Measurement ................ 3
2. GENERAL ................................................................... 4
3. DISASSEMBLY.......................................................... 15
4. TEST MODE
4-1. AF Mode.......................................................................... 20
4-2. ADJ Mode ....................................................................... 21
4-3. CLV-S Mode .................................................................... 21
5. ELECTRICAL ADJUSTMENTS ......................... 22
6. DIAGRAMS
6-1. Printed Wiring Boards — SERVO Section —................. 25
6-2. Schematic Diagram — SERVO Section —..................... 27
6-3. Schematic Diagram — AUDIO Section — ..................... 32
6-4. Printed Wiring Boards — AUDIO Section —................. 37
6-5. Printed Wiring Boards — PANEL Section —................. 39
6-6. Schematic Diagram — PANEL Section — ..................... 41
6-7. Printed Wiring Boards
— POWER SUPPLY Section — ..................................... 44
6-8. Schematic Diagram
— POWER SUPPLY Section — ..................................... 47
6-9. IC Pin Function Description ............................................ 54
(SP)
7. EXPLODED VIEWS ................................................ 60
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! 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.
8. ELECTRICAL PARTS LIST ................................ 66
– 2 –
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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.
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 objecti ve lens.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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.
CAUTION
Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
1-1. H OW T O OPEN THE DISC TRAY WHEN
POWER SWITCH TURNS OFF
Insert a tapering driver into the aperture of the unit bottom, and
turn in the direction of arrow (to OUT direction).
tray
tapering driver
*
To close the disc tray, turn the tapering
driver in the reverse direction (to IN direction).
1-2. PREPARATION FOR ADJUSTMENT AND
MEASUREMENT
Perform connecting the IC261 pin 2 of SER VO board to the line
of +5V because this unit does not work without the stabilizer structurally .
[SERVO BOARD] – Conductor side –
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.
The following caution label is located inside the unit.
IC91
1
IC261
+5 V
2
IC101
– 3 –
This section is extracted
from instruction manual.
SECTION 2
GENERAL
– 4 –
– 5 –
– 6 –
– 7 –
– 8 –
– 9 –
– 10 –
– 11 –
– 12 –
– 13 –
– 14 –
• This set can be disassembled in the order shown below.
SECTION 3
DISASSEMBLY
LOADING PANEL SECTION
(Page 15)
MECHANISM DECK (CDM32BB-12B/CDM32BN-12B)
(Page 17)
BASE UNIT (BU-12B)
(Page 18)
Follow the disassembly procedure in the numerical order given.
Note:
CASE (TOP PLATE ), FRONT PANEL SECTION
(Page 16)
SLED MOTOR (M21), OPTICAL PICK-UP (KSS-273B/J1N)
(Page 19)
LOADING PANEL SECTION
5
connector
(CN292)
SERVO BOARD
(Page 17)
AUDIO BOARD
(Page 16)
PANEL (DRAWER)
(Page 18)
4
loading panel section
3
two hexagon hole bolts
(LID) (for black/gold)
tray
1
Open the tray turning the
tapering screwdriver to the
arrow direction.
2
two screws
(KTP3
×
8) (for black/gold)
– 15 –
CASE (TOP PLATE), FRONT PANEL SECTION
1
three flat head screws
9
three connectors
(CN351, 352, 461)
3
two connectors
(CN201,
993)
6
four screws
(3
×
8)
7
two brakets (case)
4
screw
(3
×
8)
1
three flat head screws
2
case (top plate)
0
front panel section
AUDIO BOARD
3
four connectors
(CN103, 104, 105, 202)
8
two screws
(K3
4
two screws
(3
×
8)
3
two connectors
(CN202, 203)
4
four screws
(3
×
×
8)
5
lag
3
two connectors
(CN922, 923)
6
eight screws
(BV3
×
8 B)
8)
4
TR screw
3
two connectors
(CN401, 501)
5
lag
3
four connectors
(CN402, 502, 610, 611)
7
audio board
3
two connectors
(CN608, 609)
2
side plate (R)
– 16 –
1
four flat head screws
MECHANISM DECK (CDM32BB-12B/CDM32BN-12B)
2
two screws
3
clamp
4
mechanism deck
(CDM32BB-12B)
(CDM32BN-12B)
2
two screws
3
clamp
1
1
connector
(CN952)
connector
(CN105)
SERVO BOARD
1
two screws
(BVTP3
2
bracket (servo)
1
two connectors
(CN103, 104)
1
two screws
×
6)
(BVTP3
×
6)
5
six screws
(BVTP3
×
6)
3
wire (flat type) (26 core)
(CN102)
4
wire (flat type)
(12 core)
(CN101)
6
servo board
– 17 –
bracket (servo)
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