Page 1
Ñ 2 ÑTABLE OF CONTENTS
Section Title Page
SECTION 1. GENERAL................................................ 5
SECTION 2. DISASSEMBLY
2-1. Case, Bottom Plate and Front Panel .................................. 6
2-2. Back Panel and Disc Table ................................................ 6
2-3. Optical Pick-up Block Assembly ....................................... 7
2-4. Bracket (Gear) Assembly ................................................... 7
SECTION 3. ELECTRICAL BLOCK CHECKING.... 8
SECTION 4. DIAGRAMS
4-1. Circuit Boards Location ................................................... 10
4-2. Printed Wiring Board Ñ BD Section Ñ ......................... 11
4-3. Schematic Diagram Ñ BD Section Ñ ............................ 13
4-4. IC Block Diagrams .......................................................... 15
4-5. Printed Wiring Board Ñ Main Section Ñ ...................... 17
4-6. Schematic Diagram Ñ Main Section Ñ ......................... 21
4-7. IC Pin Functions
¥ IC101 Digital Signal Processor (CXD2545Q) .............. 24
¥ IC303 System Control (CXP82320-064Q) ................... 27
SECTION 5. EXPLODED VIEWS
5-1. Front Panel and Case Section .......................................... 28
5-2. Back Panel and Disk Table Section ............................... 29
5-3. Chassis Section ................................................................. 30
5-4. Base Unit Section (BU-5BD20) ...................................... 31
SECTION 6. ELECTRICAL PARTS LIST............... 32
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.ATTENTION AU COMPOSANT AYANT RAPPORT
Ë LA SƒCURITƒ!!
LES COMPOSANTS IDENTIFIƒS PAR UNE MARQUE !
SUR LES DIAGRAMMES SCHƒMATIQUES ET LA
LISTE DES PIéCES SONT CRITIQUES POUR LA
SƒCURITƒ DE FONCTIONNEMENT. NE REMPLACER
CES COMPOSANTS QUE PAR DES PIéCES SONY
DONT LES NUMƒROS SONT DONNƒS DANS CE
MANUEL OU DANS LES SUPPLƒMENTS PUBLIƒS
PAR SONY.
The following caution label is located inside of the unit.
This appliance is classified
as a CLASS 1 LASER
product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
CAUTION
Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
Page 2
Ñ 3 Ñ
MODEL IDENTIFICATION
Ñ BACK PANEL Ñ
4-978-
CDP-C250Z
US Model : 490-7¹
CDP-C350Z
US Model : 490-8¹
CDP-CE305
US Model : 490-0¹
Canadian Model : 490-1¹
AEP Model : 767-2¹
German Model : 490-3¹
Australian Model : 490-4¹
E Model : 490-5¹
Chinese Model : 490-6¹
CDP-CE405
US Model : 767-0¹
Canadian Model : 767-1¹
AEP, East Europian,
Chinese Model : 767-2¹
UK Model : 767-4¹
German Model : 767-3¹
E Model : 767-6¹
Australian Model : 767-5¹
SAFETY CHECK-OUT
(US model only)
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, ÒmetallizedÓ knobs,
screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.
LEAKAGE
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
microampers). Leakage current can be measured by any one of
three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturersÕ instructions to
use these instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The ÒlimitÓ
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 Fig. A)
To Exposed Metal
Parts on Set
0.15µF1.5kAC
voltmeter
(0.75V)
Earth Ground
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 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 objective
lens.
Page 20
Ñ 30 Ñ 5-3. CHASSIS SECTION
101
102
103
101
105
106
114
#4#4 110 111
125
not
supplied
not
supplied
108 107107
101
104
The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
Les composants identifiŽs par une
marque ! sont critiques pour la
sŽcuritŽ.
Ne les remplacer que par une
piŽce portant le numŽro spŽcifiŽ.
S601
#1#1 IC304T601
126
121
REF.No. Part No. Description Remark REF.No. Part No. Description Remark
101 4-957-283-01 WASHER (5), STOPPER
102 4-957-288-01 GEAR (MAIN)
103 4-957-287-01 GEAR (REV)
104 4-957-286-01 GEAR (U/D)
105 1-466-996-11 ENCODER, ROTARY
106 X-4946-195-1 BRACKET (GEAR) ASSY
107 4-933-134-01 SCREW (+PTPWH M2.6 x 6)
108 4-948-503-01 SPRING (BU), COMPRESSION
109 1-765-443-11 WIRE (FLAT TYPE) (23 CORE)
110 4-957-289-12 HOLDER (BU)
111 1-452-538-41 MAGNET
112 4-957-281-01 SPRING (LOCK LEVER)
113 4-957-279-01 LEVER, LOCK
114 4-957-303-01 GEAR (LOADING C)
115 4-934-375-01 GEAR (LOADING B)
116 4-957-285-01 LEVER, SET
117 4-962-087-01 SPRING (S), TENSION*118 1-659-738-11 LOADING BOARD
119 X-4941-529-1 PULLEY ASSY
120 4-944-490-01 BELT (TIMING)
*121 4-957-555-01 SHEET, INSULATING (EXCEPT US, CND)
*122 4-957-556-01 SHEET, INSULATING (EXCEPT US, CND)
123 3-531-576-11 RIVET (EXCEPT US, CND)
*124 A-4673-784-A MAIN BOARD, COMPLETE (US, CND, CH)
*124 A-4673-785-AMAIN BOARD, COMPLETE (EXCEPT US, CND, CH, E)
*124 A-4673-786-A MAIN BOARD, COMPLETE (E)
*125 A-4660-652-A MAGNET ASSY
*126 4-922-525-01 HEAT SINK
!S601 1-572-675-11 SWITCH, POWER VOLTAGE CHANGE
(VOLTAGE SELECTOR) (E)
!T601 1-423-830-11 TRANSFORMER, POWER (US, CND)
!T601 1-429-394-11 TRANSFORMER, POWER (EXCEPT US, CND, E)
!T601 1-429-395-11 TRANSFORMER, POWER (E)
M802 A-4660-914-A MOTOR ASSY, LOADING (LOADING)
123 122
#8
not supplied
124
119
120
118
M801#4
117
116 115
not
supplied 113
112
#4
#3
BU-5BD20
109
108
not supplied
