Sony Cd Player Cdpxe370 Manual

							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 1.1  2001.07
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 (λ =
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 dBmPower 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
9-929-591-12Sony Corporation
2001G0500-1Home Audio Company
C 2001.7Shinagawa Tec Service Manual Production Group 
						

							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 kΩ0.15 µFAC
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) 
						

							6
CDP-XE270/XE370
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY  FLOW
SECTION  3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE
3-2. CASE
(Page 6)
3-3. CD MECHANISM DECK
(CDM66-5BD27)
(Page 7)
3-5. BASE UNIT
(BU-5BD27)
(Page 8)3-4. MAIN BOARD
(Page 7) SET
1two screws
(case 3 TP2)
1two screws
(case 3 TP2)
1screw
(case 3 TP2)
2case 
						

							7
CDP-XE270/XE370
3-3. CD  MECHANISM  DECK (CDM66-5BD27)
3-4. MAIN  BOARD
1tapering driver
2
3
panel, loading
4wire (flat type) (21core)
7connector (CN151)8CD mechanism deck
(CDM66-5BD27)
– BOTTOM VIEW –
5three screws
(BVTP3 × 8)
6
Note: When the power supply does not turn on, 
rotate the cam with tepering driver (∅3 mm) as the figure shows, 
and the loading panel will be moved.
1connector (CN602)
2wire (flat type) (17core)
(CN621)
2wire (flat type) (21core)
(CN651)
5main board
3four screws
(BVTP3 × 8)
4two screws
(BVTP3 × 8) 
						

							8
CDP-XE270/XE370
3-5. BASE  UNIT (BU-5BD27)
1screw (DIA. 12), froating
3three screws
 (DIA. 12), froating
4holder (66)
2
– BOTTOM VIEW –
5two springs 
(932), compression
5two springs 
(932), compression
6base unit
(BU-5BD27) 
						

							9
CDP-XE270/XE370
SECTION  4
TEST  MODE
AGING MODE
Procedure:
1. While pressing the both
x and [CLEAR] buttons, turn the
power on.
2. Tray open-close aging is performed.
3. Press the 
[TIME] button to display time for open-close on the
fluorescent indicator tube.
4. To release the mode, press the 
[POWER] button to turn OFF
the power.
CHECK MODE
Procedure:
1. Press the 
[POWER] button to turn ON the power
2. Press the 
[    OPEN/CLOSE] button and insert the disc.
3. Press the 
[POWER] button to turn OFF the power.
4. While pressing the both 
[PLAY MODE] and [     ] buttons, turn
the power on .
5. CD starts playing, and every time the 
[TIME] button is pressed,
RFDC and OFFSET are changed over.
6. To release the mode, press the 
[POWER] button to turn OFF
the power.
ADJ MODE
Procedure:
1. Press the 
[POWER] button to turn ON the power
2. Press the 
[    OPEN/CLOSE] button and insert the disc.
3. Press the 
[POWER] button to turn OFF the power.
4. Short-circuit the test TP (ADJ) of the DISPLAY board and
ground with a lead wire.
5. Press the 
[POWER] button to turn ON the power and CD plays
the second track.
6. To release the mode, press the 
[POWER] button to turn OFF
the power.
7. Open-circuit the test TP (ADJ) of the DISPLAY board and
ground with a lead wire.
AFADJ MODE (KEY AND FLUORESCENT INDICA-
TOR TUBE DISPLAY CHECK MODE)
Procedure:
1. Short-circuit the test TP (AFADJ) of the DISPLAY board and
ground with a lead wire.
2. Press the 
[POWER] button to turn ON the power.
The whole fluorescent indicator tube lights up.
3. All buttons have individual button numbers.
When a button is pressed, the button number is counted up
and displayed.
When remote controller signals are received, “RM **” will be
displayed.
(** are the numbers corresponding to the remote controller
buttons.) (CDP-CE370 only)
4. To release the mode, press the 
[POWER] button to turn OFF
the power.
5. Open-circuit the test TP (AFADJ) of the DISPLAY board and
ground with a lead wire.
Buttons and Corresponding Button Numbers
Button Button Number or Display
H (PLAY) Partical lighting 1
X (PAUSE) 02
x (STOP) Partical lighting 2
lAMSL (button) 04
m05
M06
TIME 07
PLAY MODE 08
CLEAR 09
REPEAT 10
A OPEN/CLOSE All lit
lAMSL (knob)When rotated clockwise: The music calendar
numerals light up in ascending order.
When rotated counterclockwise: The music
calendar numerals light up in descending
order.
Count up display Displays button number
10
SEC MIN
Partial lighting 1
24
6810
12 14
16 18 20
Partial lighting 2
[   ]
A
H
A 
						

							10
CDP-XE270/XE370
Checking Location:
– DISPLAY BOARD (Conductor Side) –
TP 
(ADJ)TP 
(AFADJ) (GND)