Table Of Contents - Sony TA-D505 Service Manual

TA-D505
SAFETY CHECK-OUT TABLE OF CONTENTS
After correcting the original service problem, . . P
perform the following safety check before releasing peer iOne BLUE ws
the set to the customer: SECTION 1. GENERAL* * + + * ee © © © © © 3
Check the antenna terminals, metal trim, ''metallized" SECTION 2. DIAGRAMS
knobs, screws, and all other exposed metal parts for
2-2. Circuit Boards Locations + + 6
2-3. Printed Wiring Boards+ + + + 8
2-4. Schematic Diagram
LEAKAGE TEST -Audio Section- ¢« «© © © «© « « «© 13
The AC leakage from any exposed metal part to
2-9. ecHene TLC kagran
earth ground and from all exposed metal parts to any -Control Section- + + + + + + + 18
exposed metal part having a return to chassis, must SECTION 3. EXPLODED VIEWS
not exceed 0.5mA (500 microampers). Leakage
3-1. Cabinet Sections *© * © «© « « 2]
current can be measured by any one of three
methods. 3-2. Main Board Section + + « « + 22
© 23
e e e
MODEL IDENTIFICATION
2. A battery-operated AC milliammeter, The Data -Specification Label-
Precision 245 digital multimeter is suitable for
this job.
multimeters that have a 2V AC range are
suitable. (See Fig. A)
To Exposed Meta!
Parts on Set
AEP, GERMANY, ITALIAN model: AC: 220V~ 50/60Hz
UK model: AC: 240V~ 50/60Hz
E, SAUDI ARABIA,
AUSTRALIAN model: AC: 120/220/240V~ 50/60Hz
AC
0.15 uF voltmeter
| | (0.75 V)
SAFETY-RELATED COMPONENT WARNINGI!
COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A 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.
= Earth Ground
Using an AC voltmeter to check AC leakage.