HT-DDWG700, STR-KG700 - Sony Audio Service Manual (repair manual). Page 2

SAFETY CHECK-OUT
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.

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 microamperes.). 
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 miliammeter. The Data Precision 

245 digital multimeter is suitable for this job.

3.  Meausring the voltage drop across a resistor by means of a
 

VOM or battery-operated AC volmeter. 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 2 
V AC range are suitable. (See Fig. A)

4) 

You can change the AM tuning scale to 9 kHz or 10 kHz. After tuning 
in any AM station, turn off the receiver. While holding down MOVIE , 
press  &/1. All preset stations will be erased when you change the tun-
ing scale. To reset the scale to 10 kHz (or 9 kHz), repeat the procedure.

Power requirements

US, Canadian

120 V AC, 60 Hz

AEP

230 V AC, 50/60 Hz

AUS

230 V AC, 50 Hz

E51

120/220/240V AC, 50/60 Hz

AR

220 – 230 V AC, 50/60 Hz

Power output (DIGITAL MEDIA PORT)
DC OUT: 

5 V, 0.7 A MAX

Power consumption

US

220W

Canadian

290VA

AEP, AUS

220W

E51, AR

220 W

Power consumption (during standby mode)
 

0.3 W

Dimensions (width/height/depth) (Approx.)
 

17 × 5

3

/

4

 × 12

1

/

8

 inches

 

430 × 145 × 306 mm 

 

including projecting parts and controls 

 

16 lb 6oz (7.4 kg) (US, Canadian)

Mass (Approx.) 

7.7 kg

Design and specifi cations are subject to
change without notice.

•   Abbreviation
  AR  : Argentina model
  AUS  : Australian model
  E51  : Chilean and Peruvian model

Notes on chip component replacement
  •  Never reuse a disconnected chip component.
  •  Notice that the minus side of a tantalum capacitor may be 

damaged by heat.

UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with 

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.
  •  Unleaded solder melts at a temperature about 40°C higher 

than ordinary solder.

    Ordinary soldering irons can be used but the iron tip has to be 

applied to the solder joint for a slightly longer time.

    Soldering irons using a temperature regulator should be set to 

about 350°C.
Caution: The printed pattern (copper foil) may peel away if 

the heated tip is applied for too long, so be careful!

  •  Strong viscosity
    Unleaded solder is more viscou-s (sticky, less prone to fl ow) 

than ordinary solder so use caution not to let solder bridges 
occur such as on IC pins, etc.

  •  Usable with ordinary solder
    It is best to use only unleaded solder but unleaded solder may 

also be added to ordinary solder.

1.5 k

Ω

0.15

μ

F

AC
voltmeter
(0.75 V )

To Exposed Metal

Parts on Set

Earth Ground