Sony str k 685 service manual

Page 2

STR-K685
Ver. 1 .2

AM tuner section
Tuning range
Models of area code SP, SP6, TH
With 9~kHz tuning scale:

53171602 kHz
Models of area code E51:
With lO-kHz tuning scale:

530 71,610 kHz
With 9~kHz tuning scale:

5317 1,602 km
Models of area code AR, MX

With lO-kHz tuning scale:
530 , 1,610 kHz

Antenna Loop antenna
Intermediate frequency
450 kHz

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
I/(D. All preset stations will be erased when you
change the tuning scale. To reset the scale to 10
kHz (or 9 kHz), repeat the procedure.

General
Power requirements
Area code Power requirements
SP, SP6, TH 230 - 240 V AC. 50/60 Hz
E51 120/220/240 V AC,

50/60 Hz
AR 220 - 230 V AC. 50/60 Hz
MX 127 V AC. 60 Hz

Power consumption

Area code Power consumption

SP, SP6, E51, AR, 190W

MX, Tl-l

Power consumption (during standby mode)
0.3 W

Dimensions (w/h/d) (Approx)
429 X 145 X 308 mm
(16 7/8 X 5 6/8 X12 1/8
inches)
including projecting parts
and controls

Mass (Approx) 7.4 kg (16 lb 9 oz)

Design and specifications are subject to
change without notice.

- Abbreviation
AFI : Argentine model
E51 : Chilean and Peruvian models
MX : Mexican model
SP : Singapore model
SP6 : Singapore and Malaysia models
TH : Thai model

Notes on chip component replacement
0 Never reuse a disconnected chip component.
0 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)

LEAD FREE MARK
Unleaded solder has the following characteristics.

0 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 solderjoint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 0C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
0 Strong viscosity
Unleaded solder is more viscoues (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
0 Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

SAFETY-RELATED COMPONENT WARNING I!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED LINE
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.

About area codes

The area code of the receiver you purchased is
shown on the lower right portion of the rear panel
(see the illustration below).

--2-XXX-XXX-XX AA

Area code
Any differences in operation, according to the area
code, are clearly indicated in the text, for example,
"Models of area code AA only.

MODEL IDENTIFICATION

- Rear Panel -
[:1
Parts No.
Model Part No.
SP and SP6 models 2-896-343-0D
E51 model 2-896-343-1 D
MX model 2-896-343-2D
AR model 2-896-343-3D
TH model 2-896-343-7D