Sony STR-D365 Service Manual

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)
To Exposed Metal
Parts on Set
AC
aa voltmeter
(0.75V)
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SERVICE NOTE
PROTECT MODE
“PROTECT” will be displayed on the FL display when the
amplifier is faulty or when the connectors between boards have
disconnected, etc.
In the case of faulty connection, connect all the connectors of
the unit again, and turn on the power. The protection will be
canceled.
* How to avoid the “PROTECT” mode disconnecting
VOL BOARD
Short-circuit between two of TP SV on the VOL-M CONNECT
BOARD, and turn on the power.
In this case, the circuit of the MAIN BOARD does not operate,
but that of the DISPLAY BOARD operates.
Disconnect the connected read line afterwards.
TEST POINT LOCATION :
[VOL-M CONNECT BOARD)
— CONDUCTOR SIDE —
oO 0;
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Sony STR-D365 Specifications

General

Brand	Sony
Model	STR-D365
Category	Stereo Receiver
Language	English