Table Of Contents - Sony CDP-M333ES Service Manual

TABLE OF CONTENTS

1. SERVICING NOTES
2. GENERAL
................................................................... 7
3. DISASSEMBLY
......................................................... 8
4. SERVICE MODE
...................................................... 12
5. TEST MODE
.............................................................. 16
6. MECHANICAL ADJUSTMENTS
7. ELECTRICAL ADJUSTMENT
8. DIAGRAMS
8-1. Block Diagram - BD Section - ..................................... 23
8-2. Block Diagram - MAIN Section - ................................ 24
8-3. Note for Printed Wiring Boards
and Schematic Diagrams ................................................ 25
8-4. Printed Wiring Board - BD Board - ............................. 26
8-5. Schematic Diagram - BD Board - ................................ 27
8-6. Printed Wiring Board - MAIN Board - ........................ 28
8-7. Schematic Diagram - MAIN Board (1/3) - .................. 30
8-8. Schematic Diagram - MAIN Board (2/3) - .................. 31
8-9. Schematic Diagram - MAIN Board (3/3) - .................. 32
8-10. Printed Wiring Boards - DISP/KEY Boards - .............. 34
8-11. Schematic Diagram - DISP/KEY Boards - .................. 35
8-12. Printed Wiring Board - JOG Board - ............................ 36
8-13. Schematic Diagram - JOG Board - .............................. 37
8-14. Printed Wiring Boards - D. SENS (IN)/
D. SENS (OUT)/T. SENS Boards - ............................... 38
8-15. Schematic Diagram - D. SENS (IN)/
D. SENS (OUT)/T. SENS Boards - ............................... 38
8-16. Printed Wiring Boards - D. MOTOR/DOOR SW/
LED/LOADING SW/LOCK SW/
L. T. MOTOR Boards - .................................................. 39
8-17. Schematic Diagram - D. MOTOR/DOOR SW/
LED/LOADING SW/LOCK SW/
L. T. MOTOR Boards - .................................................. 39
8-18. Schematic Diagram - TRANS Board - ......................... 40
8-19. Printed Wiring Board - TRANS Board - ...................... 41
8-20. IC Pin Function Description ........................................... 49
9. EXPLODED VIEWS
10. ELECTRICAL PARTS LIST
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.
2
............................................... 3
....................... 17
............................ 19
................................................ 54
............................... 60
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.
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. 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" 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)
To Exposed Metal
Parts on Set
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
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.
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.
AC
1.5 kΩ voltmeter
(0.75 V)
Earth Ground