background image
-- 1 --
US Model
CDP-C250Z/C350Z/CE305/CE405
Canadian Model
AEP Model
CDP-CE305/CE405
UK Model
CDP-CE405
Australian Model
E Model
Chinese Model
CDP-CE305/CE405
SERVICE MANUAL
COMPACT DISC PLAYER
Model Name Using Similar Mechanism
CDP-C265/C365
CD Mechanism Type
CDM27A2-5BD20
Base Unit Type
BU-5BD20
Optical Pick-up Type
KSS-213B/K-N
SPECIFICATIONS
Compact Disc Player
Laser
Semiconductor laser (
= 780 nm)
Emission duration: continuous
Laser output
Max 44.6 µW*
* 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.
Frequency response
2 Hz to 20 kHz ± 0.5 dB
Signal-to-noise ratio
More than 102 dB
Dynamic range
More the 98 dB
Harmonic distortion
Less than 0.0045%
Channel separation
More than 100 dB
Output
Jack
Maximum
Load
type
output
impedance
level
LINE OUT
Phono
2V
Over 10 kilohms
jacks
(at 50 kilohms)
General
Power requirements
Where purchased
Power requirements
US, Canadian
120V AC, 60 Hz
AEP, UK, German,
220-230V AC, 50/60 Hz
Italian, East European
Australian
240V AC, 50/60 Hz
E
110-120V, 220-240V
adjustable, 50/60 Hz
Chinese
220-240V AC, 50 Hz
Power consumption
14W
Dimensions (approx.) 430
× 120 × 385 mm
(w/h/d)
(17
× 4 3/4 × 15 1/4 in.) incl. projecting
parts
Mass (approx.)
5.6 kg (12 lbs 6 oz)
Supplied accessories
Audio cord (2 phono plugs­2 phono plugs) (1)
Remote commander (remote) (CDP-C350Z/CE405 only)
Sony SUM-3 (NS) batteries (CDP-C350Z/CE405 only)
AC plug adaptor (1) (E model only)
Design and specifications are subject to change without notice.
CDP-C250Z/C350Z/CE305/CE405
Photo : CDP-CE405
MICROFILM


background image
-- 2 --
TABLE 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 -- BD Section -- ......................... 11
4-3.
Schematic Diagram -- BD Section -- ............................ 13
4-4.
IC Block Diagrams .......................................................... 15
4-5.
Printed Wiring Board -- Main Section -- ...................... 17
4-6.
Schematic Diagram -- Main Section -- ......................... 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
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
!
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA
LISTE
DES PIÈCES SONT CRITIQUES POUR LA
SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER
CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE
MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS
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.


background image
-- 3 --
MODEL IDENTIFICATION
-- BACK PANEL --
4-978-
CDP-C250Z
US Model
: 490-7
CDP-C350Z
US Model
: 490-8
CDP-CE305
US Model
: 490-0
Canadian Model
: 490-1
AEP Model
: 767-2
German Model
: 490-3
Australian Model
: 490-4
E Model
: 490-5
Chinese Model
: 490-6
CDP-CE405
US Model
: 767-0
Canadian Model
: 767-1
AEP, East Europian,
Chinese Model
: 767-2
UK Model
: 767-4
German Model
: 767-3
E Model
: 767-6
Australian Model
: 767-5
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, "metallized" 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 manufacturers' 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 "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 Fig. A)
To Exposed Metal
Parts on Set
0.15µF
1.5k
AC
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.


background image
-- 4 --
HOW TO 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).
*
To close the disc tray, turn the driver in the reverse direction
(to IN direction).
Tray
5 Stopper washer (5)
NOTE FOR MAIN GAER INSTALLATION
4 Install the MAIN GEAR
as show in the drawing.
2 Slide the SET LEVER to the
arrow B direction.
B
1 Set the mark of
ROTARY ENCODER.
A
3 Rotate the GEAR (U/D)
to the arrow Adirection.


background image
-- 5 --
SECTION 1
GENERAL
Identifying the Parts
Front Panel
1 POWER switch
2 CONTINUE button
3 SHUFFLE button
4 PROGRAM button
5 CHECK button
6 CLEAR button
7 REPEAT button
8 DISC 1-5 buttons
9 Display window
0 Disc tray
=/+ (AMS*) buttons
!TM 0/) (manual search) buttons
" (play) button
P (pause) button
! p (stop) button
6 OPEN/CLOSE button
DISC SKIP button
EX-CHANGE button
DISC CHECK button (CDP-CE305/CE405 only)
Remote sensor
PEAK SEARCH button (CDP-CE305/CE405 only)
@TM EDIT/TIME FADE button (CDP-CE305/CE405 only)
>10 (over 10) button
Numeric (1-10) buttons
@ TIME button
FADER button
MUSIC SCAN button
1 2 3 4 567 8
9
0
!¡ !TM
!¢!
@§@
* AMS is the abbreviation for Automatic Music Sensor.