Sony HCD-C70 - Page 3

MODEL IDENTIFICATION SAFETY CHECK-OUT
— SPECIFICATION LABEL —
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
HCD-C70 Check the antenna terminals, metal trim, “metallized” knobs, screws,
HCD-C90 and all other exposed metal parts for AC leakage. Check leakage as
described below.
MODEL NO.
LEAKAGE
TUNER CD PLAYER
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
SERIAL NO. current can be measured by any one of three methods.
MADE IN JAPAN
1. Acommercial leakage tester, such as the Simpson 229 or RCA
WT-S540A. Follow the manufacturers’ instructions to use these
S, CND) : 4-962-409-00 (U/CA)
(U instruments
HCD-
C70
(AEP,
UK)
:
4-962-410-00
(AE)
.
HCD-C70
(G)
:
4-962-411-00
(AE4)
am
7
HCD-C70 (IT) : 4-962-412-00 (IT) 2. A battery-operated AC milliammeter. The Data Precision 245
HCD-C70
(E,
EA,
AUS,
SP,
JE):
4-962-413-00
(E)
digital
multimeter
is
suitable
for
this
job.
HCD-C90 (US, CND) : 4-962-415-0001 (U/CA)
3. Measuring the voltage drop across a resistor by means of a VOM
Note or battery-operated AC voltmeter. The “limit” indication is 0.75
CND : Canadian model V, so analog meters must have an accurate low-voltage scale. The
G
_:
German
model
:
:
;
IT’ ~=tallan-model Simpson 250 and Sanwa SH-63Trd are examples of a passive
EA: Saudi Arabia model VOM thatis suitable. Nearly all battery operated digital multimeters
AUS
:
Australian
model
that
have
a
2V
AC
range
are
suitable.
(See
Fig.
A)
SP: Singapore model
JE: Tourist model
To Exposed Metal
Parts on Set
AC
fi. voltmeter
(0.75V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.