Sony CDPXE-270 Service manual
CDP-XE270/XE370
SERVICE MANUAL
Ver 1.1 2001.07
Photo: CDP-XE370
US Model
CDP-XE270/XE370
Canadian Model
CDP-XE270
AEP Model
UK Model
E Model
Australian Model
CDP-XE270/XE370
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM66-5BD27
Base Unit Name BU-5BD27
Optical Pick-up Name PXR-104X
SPECIFICATIONS
Compact disc player
Laser Semiconductor laser (λ =
Frequency response 2 Hz to 20 kHz ± 0.5 dB
Dynamic range More than 93 dB
Harmonic distortion 0.0045%
Outputs
Jack
type
ANALOG
OUT
DIGITAL
OUT
(OPTICAL)
Phono
jacks
Optical
output
connector
780 nm)
Emission duration:
continuous
Maximum
output level
2 V
(at 50
kilohms)
–18 dBm
Load
impedance
Over 10
kilohms
Wave length:
660 nm
General
Power requirements
Where purchased
US, Canadian models
AEP, UK models
Australian model
Singapore model
Power consumption 11 W
Dimensions (approx.) 430 x 95 x 290 mm
(w/h/d) incl. projecting parts
Mass (approx.)
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.
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
CDP-XE370: 3.2 kg
CDP-XE270: 3.2 kg
9-929-591-12 Sony Corporation
2001G0500-1 Home Audio Company
C 2001.7 Shinagawa Tec Service Manual Production Group
COMPACT DISC PLAYER
CDP-XE270/XE370
Ver 1.1 2001.07
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
2
CDP-XE270/XE370
r
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 during 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.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following 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. Follo w 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 lowvoltage 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 2 V A C range are suitable. (See Fig. A)
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
This appliance is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT MARKING is
located on the rear exterior.
The following caution label is located inside the unit.
To Exposed Metal
Parts on Set
1.5 k
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS
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.
Ω
Earth Ground
AC
voltmete
(0.75 V)
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0
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.
3
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 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.
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 –
PART No.
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
[]
[]
[]
[]
[]
[]
[]
[]
[]
4
LOCATION OF CONTROLS
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)
SECTION 2
GENERAL
CDP-XE270/XE370
This section is extracted from
instruction manual.
– FRONT PANEL –
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)
– REMOTE CONTROL –
(CDP-XE370 only)
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)
– REAR PANEL –
ANALOG OUT L/R jacks 2 (7)
DIGITAL OUT OPTICAL jack 1 (8)
Mains lead 4 (7)
5
CDP-XE270/XE370
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SET
3-2. CASE
(Page 6)
SECTION 3
DISASSEMBLY
3-3. CD MECHANISM DECK
(CDM66-5BD27)
(Page 7)
3-5. BASE UNIT
(BU-5BD27)
(Page 8)
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE
1
two screws
(case 3 TP2)
3-4. MAIN BOARD
(Page 7)
2
case
1
screw
(case 3 TP2)
1
two screws
(case 3 TP2)
6
3-3. CD MECHANISM DECK (CDM66-5BD27)
1
tapering driver
2
3
panel, loading
4
wire (flat type) (21core)
7
connector (CN151)
8
CD mechanism deck (CDM66-5BD27)
– BOTTOM VIEW –
5
three 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.
)
CDP-XE270/XE370
3-4. MAIN BOARD
1
connector (CN602)
2
wire (flat type) (17core)
(CN621)
2
wire (flat type) (21core)
(CN651)
4
two screws
(BVTP3 × 8)
5
main board
3
four screws
(BVTP3 × 8
7
CDP-XE270/XE370
3-5. BASE UNIT (BU-5BD27)
– BOTTOM VIEW –
3
three screws
(DIA. 12), froating
2
6
base unit (BU-5BD27)
5
two springs
(932), compression
4
holder (66)
1
screw (DIA. 12), froating
5
two springs
(932), compression
8
SECTION 4
Count up display Displays button number
10
TEST MODE
CDP-XE270/XE370
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.
A
3. Press the [POWER] button to turn OFF the power.
4. While pressing the both [PLAY MODE] and [ ] buttons, turn
H
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.
A
AFADJ MODE (KEY AND FLUORESCENT INDICATOR 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
m 05
M 06
TIME 07
PLAY MODE 08
CLEAR 09
REPEAT 10
A OPEN/CLOSE All lit
When rotated clockwise: The music calendar
lAMSL (knob)
numerals light up in ascending order.
When rotated counterclockwise: The music
calendar numerals light up in descending
order.
Partial lighting 1
SECMIN
Partial lighting 2
24
6810
12 14
16 18 20
9
CDP-XE270/XE370
Checking Location:
– DISPLAY BOARD (Conductor Side) –
(GND)
TP
(AFADJ)
TP
(ADJ)
10
+
–
BD board
TP (RFAC)
TP (VC)
oscilloscope
SECTION 5
ELECTRICAL CHECKS
CDP-XE270/XE370
Ver 1.1 2001.07
Note:
1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.
2. Use PATD-012 disc (4-225-203-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩ impedance.
4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
S Curve Check
Connection:
oscilloscope
BD board
TP (FE1)
TP (VC)
+
–
Procedure:
1. Connect an oscilloscope to test point TP (FE1) and TP (VC)
on the BD board.
2. Turn the power on and insert the disc (PATD-012).
3. Turn the power off and enter the ADJ mode. (Refer to 4. Test
Mode)
4. Turn the power on to playback the second track and press the
x button to stop playing back.
5. Press the [REPEAT] button. (The object lens moves up and
down)
6. Confirm the oscilloscope waveform (S-curve) is symmetrical
between A and B. And check peak to peak level within 2 ± 1
Vp-p.
Procedure:
1. Connect an oscilloscope to test point TP (RFDC) and TP (VC)
on the BD board.
2. Turn the power on and insert the disc (PATD-012).
3. Turn the power off and enter the ADJ mode. (Refer to 4. Test
Mode)
4. Turn the power on to playback the second track.
5. Confirm that oscilloscope waveform is clear and check RFDC
signal level is correct or not.
Note: A clear RFDC signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
RFDC signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
±
level: 1.15
VC
0.35 Vp-p
Checking Location: BD board (See page 12)
RFAC Level Check
Connection:
S-curve waveform
Note: • Try to measure several times to make sure than the ratio of A : B
or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the
brightness to obtain best waveform.
symmetry
A
B
within 2
±
1 Vp-p
Checking Location: BD board (See page 12)
RFDC Level Check
Connection:
oscilloscope
BD board
TP (RFDC)
TP (VC)
+
–
Procedure:
1. Connect an oscilloscope to test point TP (RFAC) and TP (VC)
on the BD board.
2. Turn the power on.
3. Turn the power off and enter the ADJ mode. (Refer to 4. Test
Mode)
4. Turn the power on to playback the second track.
5. Confirm that oscilloscope waveform is clear and check RF A C
signal level is correct or not.
Note: A clear RFAC signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
RFAC signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
±
level: 1.35
0.4 Vp-p
Checking Location: BD board (See page 12)
11
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