Sony CDP-CX220 / CDP-CX230 / CDP-CX235 Service Manual ▷ View online
MICROFILM
SERVICE MANUAL
COMPACT DISC PLAYER
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Compact disc player
Laser
Semiconductor laser (
λ
= 780 nm)
Emission duration: continuous
Laser output
Max 44.6 µW*
* This output is the value measured at
* 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.
objective lens surface on the
Optical Pick-up block with 7 mm
aperture.
Frequency response
20 Hz to 20 kHz ± 0.5 dB
Signal-to-noise ratio
More than 105 dB
Dynamic range
More than 98 dB
Harmonic distortion
Less than 0.0045%
Channel separation
More than 97 dB
Outputs
SPECIFICATIONS
CDP-CX220
Model Name Using Similar Mechanism
CDP-CX250
CD Mechanism Type
CDM-40B
Base Unit Type
KSM-213BKN/M-N
Optical Pick-up Type
KSS-213B/S-N
Jack
Maximum
Load impedance
type
output
level
level
LINE OUT
Phono
2V
Over 10 kilohms
Jacks
(at 50 kilohms)
DIGITAL
Optical
–18 dBm
Wave length: 660 nm
OUT
output
(OPTICAL)
connector
Where purchased
Power requirements
USA/Canada
120 V AC, 60 Hz
Australia
240 V AC, 50/60 Hz
Europe
220 V – 230 V AC, 50/60 Hz
Other countries
110 V – 120 V or 220 V – 240 V AC,
adjustable, 50/60 Hz
adjustable, 50/60 Hz
General
Power requirements
Power consumption
12 W
Dimensions (approx.)
When the front cover is closed
(w/h/d)
430
×
200
×
480 mm (17
×
7
7
/
8
×
19 in.)
incl. projecting parts
Mass (approx.)
9.5 kg (21 lbs)
Supplied accessories
Audio cord (2 phono plugs – 2 phono plugs) (1)
Remote commander (remote) (1)
Sony SUM-3 (NS) batteries (2)
CD booklet holders (2) and label (1)
Remote commander (remote) (1)
Sony SUM-3 (NS) batteries (2)
CD booklet holders (2) and label (1)
Design and specifications are subject to change without notice.
– 2 –
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
3
2.
GENERAL
...................................................................
6
3.
DISASSEMBLY
.........................................................
7
4.
TEST MODE
.............................................................. 10
5.
MECHANICAL ADJUSTMENTS
....................... 13
6.
ELECTRICAL ADJUSTMENTS
......................... 19
7.
DIAGRAMS
................................................................. 22
7-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 23
7-2. Printed Wiring Board – BD Section – ........................... 25
7-3. Schematic Diagram – BD Section – ............................... 27
7-4. Printed Wiring Board – Main Section – ........................ 29
7-5. Schematic Diagram – Main Section – ........................... 31
7-6. Printed Wiring Boards – Jack Section – ........................ 33
7-7. Schematic Diagram – Jack Section – ............................ 35
7-8. Printed Wiring Boards – Panel Section – ...................... 37
7-9. Schematic Diagram – Panel Section – .......................... 39
7-10. Printed Wiring Board – Sensor/Motor Section – .......... 41
7-11. Schematic Diagram – Sensor/Motor Section – ............. 43
7-12. IC Pin Function Description ........................................... 47
7-3. Schematic Diagram – BD Section – ............................... 27
7-4. Printed Wiring Board – Main Section – ........................ 29
7-5. Schematic Diagram – Main Section – ........................... 31
7-6. Printed Wiring Boards – Jack Section – ........................ 33
7-7. Schematic Diagram – Jack Section – ............................ 35
7-8. Printed Wiring Boards – Panel Section – ...................... 37
7-9. Schematic Diagram – Panel Section – .......................... 39
7-10. Printed Wiring Board – Sensor/Motor Section – .......... 41
7-11. Schematic Diagram – Sensor/Motor Section – ............. 43
7-12. IC Pin Function Description ........................................... 47
8.
EXPLODED VIEWS
................................................ 49
9.
ELECTRICAL PARTS LIST
............................... 56
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
other than those specified herein may result in hazardous
radiation exposure.
The laser component in this product
is capable of emitting radiation
exceeding the limit for Class 1.
is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
4-998-525-0
4-998-525-1
4-998-525-2
4-998-525-4
4-998-525-5
4-998-525-6
US model
Canadian model
AEP, AED UK model
Singapore model
E model
Australian model
PART No.
MODEL
MODEL IDENTIFICATION
— BACK PANEL —
— BACK PANEL —
• Abbreviation
AED: North European
CAUTION
:
INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
ADVARSEL :
USYNLIG LASERSTRÅLING VED ÅBNING NÅR
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE
FOR STRÅLING.
FOR STRÅLING.
VORSICHT :
UNSICHTBARE LASERSTRAHLUNG, WENN
ABDECKUNG GEÖFFNET UND SICHEREITSVERRIEGELUNG
ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
VARO
!
:
AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT-
TIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING
:
OSYNLING LASERSTRÅLING NÄR DENNA DEL ÄR ÖPPNAD
OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.
ADVERSEL :
USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG
SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.
VIGYAZAT
! :
A BURKOLAT NYITÁSAKOR LÁTHATATLAN LÉZERSU-
GÁRVESZÉLY
! KERÜLJE A BESUGÁRZÁST!
(Except for the customers in the United States and
Canada)
Canada)
The following caution label is located inside the unit.
PART No.
– 3 –
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 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
!
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 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
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
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.
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
SECTION 1
SERVICING NOTES
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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
Carry out the “S curve check” in ”CD section adjustment” and
check that the S curve waveform is output repeatedly.
check that the S curve waveform is output repeatedly.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
– 4 –
CD-TEXT TEST DISC
This unit is able to display the test data (character information) written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display.
To check, perform the following procedure.
The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display.
To check, perform the following procedure.
Checking Method:
1. Turn ON the power, set the disc on the disc table with the side labeled as “test disc” as the right side, close the front cover, and chuck the
disc.
2. Press the
· button and play back the disc.
3. The following will be displayed on the fluorescent indicator tube.
Display : 1kHz/0 dB/ L&R
4. Press the
≠ and ± buttons to switch the track. The text data of each track will be displayed.
For details of the displayed contents for each track, refer to “Table 1 : CD-TEXT TEST DISC TEXT Data Contents” and “Table 2 : CD-
TEXT TEST DISC Recorded Contents and Display”.
TEXT TEST DISC Recorded Contents and Display”.
Restrictions in CD-TEXT Display
In this unit, some special characters will not be displayed properly. These will be displayed as a space or a character resembling it. For
details, refer to “Table 2 : CD-TEXT DISC Recorded Contents and Display”.
details, refer to “Table 2 : CD-TEXT DISC Recorded Contents and Display”.
Table 1 : CD-TEXT TEST DISC TEXT Data Contents (TRACKS No. 1 to 41:Normal Characters)
1
1kHz/0dB/L&R
22
1kHz/-90dB/L&R
2
20Hz/0dB/L&R
23
Infinity Zero w/o emphasis//L&R
3
40Hz/0dB/L&R
24
Infinity Zero with emphasis//L&R
4
100Hz/0dB/L&R
25
400Hz+7kHz(4:1)/0dB/L&R
5
200Hz/0dB/L&R
26
400Hz+7kHz(4:1)/-10dB/L&R
6
500Hz/0dB/L&R
27
19kHz+20kHz(1:1)/0dB/L&R
7
1kHz/0dB/L&R
28
19kHz+20kHz(1:1)/-10dB/L&R
8
5kHz/0dB/L&R
29
100Hz/0dB/L*
9
7kHz/0dB/L&R
30
1kHz/0dB/L*
10
10kHz/0dB/L&R
31
10kHz/0dB/L*
11
16kHz/0dB/L&R
32
20kHz/0dB/L*
12
18kHz/0dB/L&R
33
100Hz/0dB/R*
13
20kHz/0dB/L&R
34
1kHz/0dB/R*
14
1kHz/0dB/L&R
35
10kHz/0dB/R*
15
1kHz/-1dB/L&R
36
20kHz/0dB/R*
16
1kHz/-3dB/L&R
37
100Hz Squer Wave//L&R
17
1kHz/-6dB/L&R
38
1kHz Squer Wave//L&R
18
1kHz/-10dB/L&R
39
1kHz w/emphasis/-0.37dB/L&R
19
1kHz/-20dB/L&R
40
5kHz w/emphasis/-4.53dB/L&R
20
1kHz/-60dB/L&R
41
16kHz w/emphasis/-9.04dB/L&R
21
1kHz/-80dB/L&R
TRACK
No.
Displayed Contents
NOTE:
The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.
TRACK
No.
Displayed Contents
