Sony STR-AV880 - Table of Contents; Safety Check-Out

TABLE OF CONTENTS
Section Title Page
Specifications ©... 0.2... eee eee eee 1
Features 2... 0... ee ee ee ee ees 2
Safety Check-out ....... 0.00. eee eee 3
Notes on Repair... 2... 0... eee ee ees 4
Location and Function of Controls .........- 5
To Receive FM/AM Broadcast...........--- 11
To Listen to Program Sources Other Than
Broadcasts weg hie ace eed es hears Gee eae 13
To Set the Acoustic Settings............--- 15
To Record on an Audio Tape ..........-.4.-- 16
Hi-Fi Video Recording........---.---0055 17
Video Tape Editing. ©... 2.0... ee eee eee 18
Adding New Sound on a Video Tape
During Editing... 2... ee ee es 18
Connection Diagrams ........-+2+020005 19
IC Pin Function ......... 0.0000 eee 25
1. ELECTRICAL ADJUSTMENTS ....... 28
2, DIAGRAMS . 33
2-1. Main Section Mounting Diagram ....... 34
2-2. Main Section Schematic Diagram ....... 39
2-3. Display Section Mounting Diagram and
Schematic Diagrams .........---+55 44
2-4. Tuner Section Schematic Diagram ...... 50
Semiconductor Lead Layouts ..........+.-. 53
3. EXPLODED VIEWS AND
PARTS LIST ..........-0- 00-00? 54
4. ELECTRICAL PARTS LIST......... 57
Troubleshooting... ........ 002 ee eee eee 66
STR-AV88O0
SAFETY CHECK-OUT (US Model)
After correcting the original service problem,
perform the following 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 meta! part to
earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis, must
not exceed 0.5mA (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 instru-
ments.
A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
ihis job.
Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. 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)
To Exposed Metal
Parts on Set
{
AC
voltmeter
1.5kQ
(0.75 V)
0.15 uF
a
L Earth Ground
Fig.
A.
Using
an
AC
voltmeter
to
check
AC
leakage.