Sony tc v 7 service manual

Page 2

Z-V7

Wow and flutter 0.065% WRMS (NAB)

:o.2% (DIN)

Inputs Line inputs (phone jacks)
Sensitivity 77.5 mV (-20 dB)
Input impedance 50 K ohms

Outputs Line outputs (phone jacks)

Output level 0.435V (-5 dB) at load
impedance 50 k ohms
Load impedance over 10 k ohms

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SAFETY CHECK-OUT (US Model)

After correcting the original seruce 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 metal part to
earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis, must
not exceed 05 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 instru~
ments.

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 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 3 2V AC range are
suitable. (See Fig. A)

General

Power requirements AEP model: 220 V ac, 50/60 Hz

AC outlet

Power consumption

Dimensions

Weight

(240 V ac adjustable by authorized
Sony personnel)
UK model: 240 V ac, 50/60 Hz
(220 V ac adjustable by authorized
Sony personnel)
US.Canadian model: 120V ac, 60 Hz
E model: 110,120,220 or 240 V ac
adjustable, 50/60 Hz
US, Canadian,AEP model: 1 unswitched,
100 watts max.
UK model: 1 switched. 100 watts maxi
AEP, UK model: 22 watts
US» Canadian model'- 20 watts
E model: 21 watts
Approx. 355 x 80 X 280 mm (wlhld)
(14 x 3% X11l/. inches)
including projecting parts and controls
Approx. 5kg (11 lbs 1 oz)

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(G

0.15;;F

To Exposed Metal
Parts on Set

AC
1.5 km / voltmeter
{075 VI
:- Ea/th Ground (Es:

Fig. A. Using an AC voltmeter to check AC leakage.