Sony SCD-C555ES - Super Audio Cd, Service Manual

2

SCD-C555ES

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

PUBLISHED BY SONY.

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 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.

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
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” 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.

0.15

µ

F

To Exposed Metal
Parts on Set

1.5k

Ω

AC
voltmeter
(0.75V)

Earth Ground

TABLE OF CONTENTS

1. SERVICING NOTES (1)

.............................................

3

2. GENERAL

.......................................................................... 4

3. DISASSEMBLY

3-1. Case ··············································································· 6
3-2. Front Panel Section ······················································· 6
3-3. Main Board ···································································· 7
3-4. Audio Board ·································································· 7
3-5. D-Power, I/O Board ······················································· 8
3-6. CD Mechanism Deck (CDM59-DVBU5) ····················· 8
3-7. Optical Pick-Up Block (KHM-230AAA/J1NP) ············ 9
3-8. Table Assy ····································································· 9
3-9. Tray, Sensor Board ······················································ 10
3-10. Loading Motor Board ·················································· 10
3-11. Adjusting Phase of Swing Gear and Gear (U/D) ········ 11

4. DIAGRAMS

4-1. Block Diagrams ··························································· 13

• RF/Servo Section ······················································ 13
• Main Section-1 ·························································· 14
• Main Section-2 ·························································· 15
• Audio Section ···························································· 16
• Display/Power Section ·············································· 17

4-2. Schematic Diagram    RF Section ······························· 18
4-3. Printed Wiring Board   RF Section ······························ 19
4-4. Printed Wiring Board    Main Section (Side A) ··········· 20
4-5. Printed Wiring Board    Main Section (Side B) ··········· 21
4-6. Schematic Diagram    Main Section (1/5) ··················· 22
4-7. Schematic Diagram    Main Section (2/5) ··················· 23
4-8. Schematic Diagram    Main Section (3/5) ··················· 24
4-9. Schematic Diagram    Main Section (4/5) ··················· 25
4-10. Schematic Diagram    Main Section (5/5) ··················· 26
4-11. Schematic Diagram    Audio Section (1/2) ················· 27
4-12. Schematic Diagram    Audio Section (2/2) ················· 28
4-13. Schematic Diagram    D-Power Section ····················· 29
4-14. Printed Wiring Board   Audio Section ························ 30
4-15. Printed Wiring Board     In Out/D-Power Section ······ 31
4-16. Schematic Diagram    In Out Section ························· 31
4-17. Schematic Diagram    Display Section ······················· 32
4-18. Printed Wiring Board     Display Section ···················· 33
4-19. Schematic Diagram     HP Section ······························ 34
4-20. Printed Wiring Board     HP Section ··························· 35
4-21. Schematic Diagram     Sensor Section ························ 36
4-22. Printed Wiring Board     Sensor Section ····················· 37
4-23. Schematic Diagram     Power Section ························· 38
4-24. Printed Wiring Board    Power Section ······················· 39
4-25. IC Block Diagrams ····················································· 40
4-26. IC Pin Function Description ······································· 44

5. SERVICING NOTES (2)

................................................ 57

6. TEST  MODE

...................................................................... 58

7. EXPLODED VIEWS

7-1.Case Section ··································································· 74
7-2.Front Panel Section ························································ 75
7-3.Main Chassis Section ····················································· 76
7-4.CD Mechanism (CDM59-DVBU5) -1 Section ·············· 77
7-5.CD Mechanism (CDM59-DVBU5) -2 Section ·············· 78

8. ELECTRICAL PARTS LIST

........................................ 79