SERVICE MANUAL
COMPACT DISC PLAYER
US Model
CDP-XE270/XE370
Canadian Model
CDP-XE270
AEP Model
UK Model
E Model
Australian Model
CDP-XE270/XE370
SPECIFICATIONS
CDP-XE270/XE370
Photo: CDP-XE370
Ver 1.2 2002.04
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM66-5BD27
Base Unit Name
BU-5BD27
Optical Pick-up Name
PXR-104X
Compact disc player
Laser
Semiconductor laser (
=
780 nm)
Emission duration:
continuous
Frequency response
2 Hz to 20 kHz
± 0.5 dB
Dynamic range
More than 93 dB
Harmonic distortion
0.0045%
Outputs
ANALOG
OUT
DIGITAL
OUT
(OPTICAL)
General
Power consumption
11 W
Dimensions (approx.)
430 x 95 x 290 mm
(w/h/d)
incl. projecting parts
Mass (approx.)
CDP-XE370: 3.2 kg
CDP-XE270: 3.2 kg
Supplied accessories
Audio cord (2 phono plugs 2 phono plugs) (1)
Remote commander (remote) (1) (CDP-XE370 only)
R6 (size AA) batteries (2) (CDP-XE370 only)
Design and specifications are subject to change
without notice.
Load
impedance
Over 10
kilohms
Wave length:
660 nm
Jack
type
Phono
jacks
Optical
output
connector
Maximum
output level
2 V
(at 50
kilohms)
18 dBm
Power requirements
Where purchased
US, Canadian models
AEP, UK models
Australian model
Singapore model
Power requirements
120 V AC, 60 Hz
230 V AC, 50/60 Hz
240 V AC, 50/60 Hz
220 V 230 V AC, 50/60 Hz
9-929-591-13
Sony Corporation
2002D0500-1
Home Audio Company
C
2002.04
Published by Sony Engineering Corporation
2
CDP-XE270/XE370
TABLE OF CONTENTS
1.
SERVICING NOTES ............................................... 4
2.
GENERAL ................................................................... 5
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
6
3-2. Case .................................................................................
6
3-3. CD Mechanism Deck (CDM66-5BD27) ........................
7
3-4. MAIN Board ...................................................................
7
3-5. Base Unit (BU-5BD27) ...................................................
8
4.
TEST MODE .............................................................. 9
5.
ELECTRICAL CHECKS ....................................... 11
6.
DIAGRAMS
6-1. Note for Printed Wiring Boards
and Schematic Diagrams ................................................ 13
6-2. Printed Wiring Board BD Board ............................. 14
6-3. Schematic Diagram BD Board ................................ 15
6-4. Printed Wiring Boards
LOADING/MAIN/POWER SW Boards .................. 16
6-5. Schematic Diagram
LOADING/MAIN/POWER SW Boards .................. 17
6-6. Printed Wiring Boards DISPLAY/KEY Boards ...... 18
6-7. Schematic Diagram DISPLAY/KEY Boards .......... 19
6-8. IC Pin Function Description ........................................... 22
7.
EXPLODED VIEWS
7-1. Case Section .................................................................... 26
7-2. Front Panel Section ......................................................... 27
7-3. CD Mechanism Deck Section (CDM66-5BD27) ........... 28
7-4. Base Unit Section (BU-5BD27) ..................................... 29
8.
ELECTRICAL PARTS LIST ............................... 30
Ver 1.1 2001.07
3
CDP-XE270/XE370
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 ra-
diation exposure.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check 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 TEST
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.
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" indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
0.15
µF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 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 PUB-
LISHED BY SONY.
The following caution label is located inside the unit.
This appliance is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT MARKING is
located on the rear exterior.
4
CDP-XE270/XE370
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 electro-
static 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 emis-
sion, observe from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the "S curve check" in "CD section adjustment" and
check that the S curve waveforms is output three times.
· MODEL IDENTIFICATION
Rear Panel
MODEL
PART No.
CDP-XE270: AEP model
4-232-151-0[]
CDP-XE270: UK model
4-232-151-1[]
CDP-XE270: US and Canadian models
4-232-151-2[]
CDP-XE270: Australian model
4-232-151-3[]
CDP-XE270: Singapore model
4-232-151-6[]
CDP-XE370: AEP model
4-232-692-0[]
CDP-XE370: UK model
4-232-692-1[]
CDP-XE370: US model
4-232-692-2[]
CDP-XE370: Australian model
4-232-692-3[]
CDP-XE370: Singapore model
4-232-692-6[]
PART No.
5
CDP-XE270/XE370
SECTION 2
GENERAL
This section is extracted from
instruction manual.
CLEAR qg (12)
Disc compartment 6 (8)
Display qj (10)
PLAY MODE 2 (9, 12, 14)
POWER 1 (8)
Remote sensor qh (7)
(CDP-XE370 only)
REPEAT 3 (9, 11)
TIME w; (10)
BUTTON DESCRIPTIONS
A OPEN/CLOSE 7 (8, 10, 12)
H 8 (9, 11, 12, 14)
X 9 (9, 14)
x 0 (9, 14)
lAMSL dial qa (9, 12, 14)
m/M qk (9, 13)
LOCATION OF CONTROLS
FRONT PANEL
REMOTE CONTROL
(CDP-XE370 only)
ANALOG OUT LEVEL +/ qk (7, 9)
CHECK qg (12)
CLEAR qf (12)
CONTINUE 2 (9, 14)
DISPLAY ON/OFF qs (11)
FADER qd (13)
Number buttons 4 (9, 12)
PROGRAM qa (9)
REPEAT 6 (9)
SHUFFLE 1 (9)
TIME 3 (10)
BUTTON DESCRIPTIONS
>10 5 (9, 12)
N qh (9, 11, 12, 14)
X 8 (9, 14)
x qj (9, 14)
. AMS > 9 (9, 12, 14)
m/M 0 (9, 13)
REAR PANEL
ANALOG OUT L/R jacks 2 (7)
Mains lead 4 (7)
DIGITAL OUT OPTICAL jack 1 (8)