Sony CDP-CX455 Service Manual ▷ View online
2
CDP-CX455
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.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of 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.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
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.
The following
caution label is
located inside of
the unit.
caution label is
located inside of
the unit.
PARTS No.
MODEL
MODEL IDENTIFICATION
— BACK PANEL —
— BACK PANEL —
4-238-082-0s
4-238-082-1s
4-238-082-2s
4-238-082-1s
4-238-082-2s
US
CND
AEP, UK
CND
AEP, UK
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 PUBLISHED BY SONY.
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 COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS
SONT DONNÉS DANS CE MANUEL OU DANS LES
SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks 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.
safety checks 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.
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.
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.
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 low-voltage
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 2V AC range are suitable. (See
Fig. A)
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
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 2V AC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
PART NO.
0.15
µ
F
To Exposed Metal
Parts on Set
Parts on Set
1.5k
Ω
AC
voltmeter
(0.75V)
voltmeter
(0.75V)
Earth Ground
• Abbreviation
CND : Canadian model
3
CDP-CX455
SECTION 1
SERVICE NOTE
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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
repain parts.
The flexible board is easily damaged and should be handled with
care.
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
repain 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 objective lens.
The emission check enables continuous checking of the S curve.
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 objective lens.
The emission check enables continuous checking of the S curve.
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 three times.
that the S curve waveform is output three times.
TABLE OF CONTENTS
1. SERVICE NOTE
······························································· 3
2. GENERAL
·········································································· 6
3. DISASSEMBLY
································································ 7
3-1. Case ··············································································· 8
3-2. MAIN Board ································································· 8
3-3. TRANS Board ······························································· 9
3-4. Front Panel Assembly ···················································· 9
3-5. JOG Board, DISP Board, KEYBOARD Board ··········· 10
3-6. Cover (PT), Table (400) Assembly ······························ 11
3-7. LED Board, Guide (Door) ··········································· 11
3-8. DOOR SW Board ························································ 12
3-9. Base (Door Driving) Assembly ··································· 13
3-10. Pop-up Assembly ························································· 13
3-11. D.MOTOR Board, Motor Assembly (Door) (M603) ·· 14
3-12. T.SENS Board, Holder (Table Sensor 400) ················· 14
3-13. D.SENS (OUT) Board, D.SENS (IN) Board ·············· 15
3-14. Back Panel Section ······················································ 15
3-15. CD Mechanism, Magnet Assembly ····························· 16
3-16. LOADING SW Board, LOCK SW Board ·················· 17
3-17. CDM Assembly ··························································· 18
3-18. Motor Assembly (Table) (M601),
3-2. MAIN Board ································································· 8
3-3. TRANS Board ······························································· 9
3-4. Front Panel Assembly ···················································· 9
3-5. JOG Board, DISP Board, KEYBOARD Board ··········· 10
3-6. Cover (PT), Table (400) Assembly ······························ 11
3-7. LED Board, Guide (Door) ··········································· 11
3-8. DOOR SW Board ························································ 12
3-9. Base (Door Driving) Assembly ··································· 13
3-10. Pop-up Assembly ························································· 13
3-11. D.MOTOR Board, Motor Assembly (Door) (M603) ·· 14
3-12. T.SENS Board, Holder (Table Sensor 400) ················· 14
3-13. D.SENS (OUT) Board, D.SENS (IN) Board ·············· 15
3-14. Back Panel Section ······················································ 15
3-15. CD Mechanism, Magnet Assembly ····························· 16
3-16. LOADING SW Board, LOCK SW Board ·················· 17
3-17. CDM Assembly ··························································· 18
3-18. Motor Assembly (Table) (M601),
Motor Assembly (Loading) (M602) ···························· 18
3-19. BU Holder ··································································· 19
3-20. BD Board, Optical Pick-up (KSM-213BFN) ·············· 19
3-20. BD Board, Optical Pick-up (KSM-213BFN) ·············· 19
4. TEST MODE
···································································· 20
5. ADJUSTMENTS
···························································· 25
6. DIAGRAMS
······································································ 29
6-1. Circuit Boards Location ·············································· 29
6-2. Block Diagrams ··························································· 30
6-3. Printed Wiring Board – BD Board – ··························· 32
6-4. Schematic Diagram – BD Board – ······························ 33
6-5. Printed Wiring Board – MAIN Board – ······················ 34
6-6. Schematic Diagram – MAIN Board (1/2) – ················ 35
6-7. Schematic Diagram – MAIN Board (2/2) – ················ 36
6-8. Printed Wiring Board – Sensor Section – ···················· 37
6-9. Schematic Diagram – Sensor Section – ······················ 37
6-10. Printed Wiring Board – Display Section – ·················· 38
6-11. Schematic Diagram – Display Section – ····················· 39
6-12. Printed Wiring Board – JOG Board – ························· 40
6-13. Schematic Diagram – JOG Board – ···························· 41
6-14. Printed Wiring Board – Power Section – ···················· 42
6-15. Schematic Diagram – Power Section – ······················· 43
6-16. IC Block Diagrams ······················································ 44
6-17. IC Pin Function Descriptions ······································ 46
6-2. Block Diagrams ··························································· 30
6-3. Printed Wiring Board – BD Board – ··························· 32
6-4. Schematic Diagram – BD Board – ······························ 33
6-5. Printed Wiring Board – MAIN Board – ······················ 34
6-6. Schematic Diagram – MAIN Board (1/2) – ················ 35
6-7. Schematic Diagram – MAIN Board (2/2) – ················ 36
6-8. Printed Wiring Board – Sensor Section – ···················· 37
6-9. Schematic Diagram – Sensor Section – ······················ 37
6-10. Printed Wiring Board – Display Section – ·················· 38
6-11. Schematic Diagram – Display Section – ····················· 39
6-12. Printed Wiring Board – JOG Board – ························· 40
6-13. Schematic Diagram – JOG Board – ···························· 41
6-14. Printed Wiring Board – Power Section – ···················· 42
6-15. Schematic Diagram – Power Section – ······················· 43
6-16. IC Block Diagrams ······················································ 44
6-17. IC Pin Function Descriptions ······································ 46
7. EXPLODED VIEWS
······················································ 50
7-1. Case Section ································································ 50
7-2. Chassis Section 1 ························································· 51
7-3. Chassis Section 2 ························································· 52
7-4. Front Panel Section ····················································· 53
7-5. Mechanism Section 1 (CDM62-K1BD46A) ··············· 54
7-6. Mechanism Section 2 (CDM62-K1BD46A) ··············· 55
7-7. Mechanism Section 3 (CDM62-K1BD46A) ··············· 56
7-8. Mechanism Section 4 (CDM62-K1BD46A) ··············· 57
7-9. Optical Pick-up Section (BU-K1BD46A) ··················· 58
7-2. Chassis Section 1 ························································· 51
7-3. Chassis Section 2 ························································· 52
7-4. Front Panel Section ····················································· 53
7-5. Mechanism Section 1 (CDM62-K1BD46A) ··············· 54
7-6. Mechanism Section 2 (CDM62-K1BD46A) ··············· 55
7-7. Mechanism Section 3 (CDM62-K1BD46A) ··············· 56
7-8. Mechanism Section 4 (CDM62-K1BD46A) ··············· 57
7-9. Optical Pick-up Section (BU-K1BD46A) ··················· 58
8. ELECTRICAL PARTS LIST
······································· 59
4
CDP-CX455
CD-TEXT TEST DISC
This unit is able to display the TEXT data (character information) written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313:J-2501-126-A) is used for checking the display.
To check, perform the following procedure.
The CD-TEXT TEST DISC (TGCS-313:J-2501-126-A) 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.
disc.
2.
The following will be displayed on the fluorescent indicator tube. (The display switches each time the DISPLAY button is pressed.)
Display : CD TEXT Test Disc (Album Title)
3.
Press the
· button and play back the disc.
4.
The following will be displayed on the fluorescent indicator tube. (If nothing is displayed, press the DISPLAY button.)
Display : 1kHz/0 dB/ L&R
5.
Rotate l AMS L knob 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”.
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”.
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”.
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
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
TRACK
No.
Displayed Contents
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
TRACK
No.
Displayed Contents
1kHz/0dB/L&R
20Hz/0dB/L&R
40Hz/0dB/L&R
100Hz/0dB/L&R
200Hz/0dB/L&R
500Hz/0dB/L&R
1kHz/0dB/L&R
5kHz/0dB/L&R
7kHz/0dB/L&R
10kHz/0dB/L&R
16kHz/0dB/L&R
18kHz/0dB/L&R
20kHz/0dB/L&R
1kHz/0dB/L&R
1kHz/-1dB/L&R
1kHz/-3dB/L&R
1kHz/-6dB/L&R
1kHz/-10dB/L&R
1kHz/-20dB/L&R
1kHz/-60dB/L&R
1kHz/-80dB/L&R
1kHz/-90dB/L&R
Infinity Zero w/o emphasis//L&R
Infinity Zero with emphasis//L&R
400Hz+7kHz(4:1)/0dB/L&R
400Hz+7kHz(4:1)/-10dB/L&R
19kHz+20kHz(1:1)/0dB/L&R
19kHz+20kHz(1:1)/-10dB/L&R
100Hz/0dB/L*
1kHz/0dB/L*
10kHz/0dB/L*
20kHz/0dB/L*
100Hz/0dB/R*
1kHz/0dB/R*
10kHz/0dB/R*
20kHz/0dB/R*
100Hz Squere Wave//L&R
1kHz Squere Wave//L&R
1kHz w/emphasis/-0.37dB/L&R
5kHz w/emphasis/-4.53dB/L&R
16kHz w/emphasis/-9.04dB/L&R
NOTE : The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.
5
CDP-CX455
TRACK
No.
Recorded contents
Display
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
X Y Z [ \ ] ^ _ (58····
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
are displayed without “/”
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
N All the same
to
N All the same
′
*
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
to
99
! ” # $ % & ´
(21h to 27h)1kHz 0dB L&R
( )
+ , – . /
(28h to 2Fh)
0 1 2 3 4 5 6 7
(30h to 37h)
8 9 : ; < = > ?
(38h to 3Fh)
@A B C D E F G
(40h to 47h)
H I J K L M N O
(48h to 4Fh)
P Q R S T U V W
(50h to 57h)
X Y Z [ ¥ ] ^ _
(58h to 5Fh)
a b c d e f g
(60h to 67h)
h i j k l m n o
(68h to 6Fh)
p q r s t u v w
(70h to 77h)
x y z { I }
(78h to 7Fh)
i ¢ £ ¤ ¥
§
(A0h to A7h) 8859-1
≥
C
ª
¬
PR
–
(A8h to AFh)
•
±
2
3
µ
¶ •
(B0h to B7h)
†
1
º
¿
(B8h to BFh)
À Á Â Ã Ä Å ÆÇ
(C0h to C7h)
È É Ê Ë Ì Í Î Ï
(C8h to CFh)
D Ñ Ò Ó Ô Õ Ö
(D0h to D7h)
Ø Ù Ú Û Ü Y
ß
(D8h to DFh)
à á â ã ä å æ ç
(E0h to E7h)
è é ê ë ì í î ï
(E8h to EFh)
∂
ñ ò ó ô õ ö
÷
(F0h to F7h)
ø ù ú û ü y
ÿ
(F8h to FFh)
No.66
No.67
to
No.99
~
′
1
4
4
1
2
2
3
4
4
˙
1
4
4
1
2
2
3
4
4
Table 2:
CD-TEXT TEST DISC Recorded Contents and Display
(In this unit, some special characters cannot be displayed. This is no a fault.)
(In this unit, some special characters cannot be displayed. This is no a fault.)
´