Sony CDP-CE275 / CDP-CE375 Service Manual ▷ View online
2
CDP-CE275/CE375
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
3
2.
GENERAL
...................................................................
4
3.
DISASSEMBLY
.........................................................
5
4.
TEST MODE
.............................................................. 10
5.
ELECTRICAL ADJUSTMENTS
......................... 13
6.
DIAGRAMS
6-1. Note for Printed Wiring Boards
and Schematic Diagrams ................................................ 15
6-2. Printed Wiring Board – BD Board – ............................. 16
6-3. Schematic Diagram – BD Board – ................................ 17
6-4. Printed Wiring Boards – JUNCTION/SENSOR/
6-3. Schematic Diagram – BD Board – ................................ 17
6-4. Printed Wiring Boards – JUNCTION/SENSOR/
LOADING MOTOR Boards – ........................................ 18
6-5. Schematic Diagram – JUNCTION/SENSOR/
LOADING MOTOR Boards – ........................................ 19
6-6. Printed Wiring Board – MAIN Board – ........................ 20
6-7. Schematic Diagram – MAIN Board – ........................... 21
6-8. Printed Wiring Boards – PANEL Section – .................. 22
6-9. Schematic Diagram – PANEL Section – ....................... 23
6-10. IC Pin Function Description ........................................... 26
6-7. Schematic Diagram – MAIN Board – ........................... 21
6-8. Printed Wiring Boards – PANEL Section – .................. 22
6-9. Schematic Diagram – PANEL Section – ....................... 23
6-10. IC Pin Function Description ........................................... 26
7.
EXPLODED VIEWS
................................................ 30
8.
ELECTRICAL PARTS LIST
............................... 35
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.
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.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
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.
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
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.
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)
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
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Ver 1.1 2001.07
3
CDP-CE275/CE375
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
Carry out the “S curve check” in “CD section adjustment” and
check that the S curve waveforms is output three times.
check that the S curve waveforms is output three times.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• 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.
SECTION 1
SERVICING NOTES
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
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.
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.
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.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
HOW TO OPEN THE DISC TABLE WHEN POWER
SWITCH TURNS OFF
SWITCH TURNS OFF
Insert a tapering driver into the aperture of the unit bottom, and
turn it in the direction of the arrow (to OUT direction).
turn it in the direction of the arrow (to OUT direction).
Part No.
Model
Part No.
CDP-CE275: US model
4-233-719-0s
CDP-CE275: Canadian model
4-233-719-1s
CDP-CE275: Australian model
4-233-719-2s
CDP-CE375: US model
4-233-718-0s
CDP-CE375: Canadian model
4-233-718-1s
CDP-CE375: AEP model
4-233-718-2s
CDP-CE375: UK model
4-233-718-3s
CDP-CE375: Australian model
4-233-718-4s
CDP-CE375: E model
4-233-718-5s
CDP-CE375: Singapore model
4-233-718-6s
MODEL IDENTIFICATION
– BACK PANEL –
– BACK PANEL –
table
tapering driver
*
To close the disc table, turn the tapering
driver in the reverse direction (to IN direction).
driver in the reverse direction (to IN direction).
gear (U/D)
gear (RV)
gear, swing
NOTE FOR MAIN GEAR INSTALLATION
4
CDP-CE275/CE375
SECTION 2
GENERAL
• LOCATION OF CONTROLS
– Front panel –
1
POWER button
2
DISC1 – DISC5 button
3
Fluorescent indicator tube display
4
H button
5
X button
6
x button
7
EX-CHANGE button
8
DISC SKIP button
9
l AMS L control
0
A OPEN/CLOSE button
qa
PHONES jack (CE375 only)
– Rear panel –
1
DIGITAL OUT OPTICAL connector
2
ANALOG OUT
1
2
1
2
3
4
6 7
9
5
8
qs
qd
0
qf
qg
qh
qj
qa
qk
w;
ql
wa
ws
qs
CLEAR button
qd
CHECK button
qf
EDIT button
qg
M button
qh
m button
qj
Disc table
qk
TIME button
ql
REPEAT button
w;
FADER button
wa
PEAK SEARCH button
ws
PLAY MODE button
5
CDP-CE275/CE375
3-1. CASE
Note:
Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
• The equipment can be removed using the following procedure.
Set
Case
Front Panel Assy
Base Unit (BU-5BD27)
Optical Pick-up
Tray, Table Assy
CD Mechanism Block
Sensor Board
Jnuction Board, Loading Motor Board
3
two screws
(BVTP 3x8)
(BVTP 3x8)
4
case
5
6
2
two screws
(case 3TP2)
(case 3TP2)
1
two screws
(case 3TP2)
(case 3TP2)
7
panel, loading
Ver. 1.2
