Sony st v 502 service manual

Page 1

SERVICE MANUAL

A E P Model
UK Model

This set i: FM stereo/FM-AM
Tuner section in LBT-V502/V502CD/
VSOZCDG.

SPECIFICATIONS

Tuner
System

FM tuner section
Tuning range
Antenna
Intermediate frequency
MW/LW tuner section
Tuning range

Antenna

Intermediate frequency
Power requirements

Power consumption
AC outlet

Weight

Dimensions

FM stereo
F M/ AM superheterodyne tuner

37.5 to 108 MHz
75 ohms unbalanced
10.7 MHZ

MW: 522 to 1.611kHz (Italian model)
531 to 1.602kHz (other models)
LW: 144 to 288kHz (Italian model)
153 to 279kHz (other models)
AM loop antenna
External antenna terminal
450 kHz
240V AC. 50Hz (UK model)
220V AC. 50Hz (other models)
I0 W
2 switched. total 500 W max.
Approx. 2.4 kg
Approx. 355 X 80 X 312 mm
(w/h/d, including projections)

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BV MARK & 0R DOTTED
LINE WITH MARK & ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LlST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

FM STEREO/FM-AM TUNER

SONY;

Page 2

ST- V502

SECTION 1
SERVICING NOTES

Note on Ceramic Filter (CF1,2,3) A Replacement.

This set employs three ceramic filters (CF1,2,3) A which
should have the same color marking to identify their center
frequency, Therefore FM IF offset adjustment by >I= D609, *
D610 is necessary to match the center frequency of the
ceramic filters used with FM intermediate frequency.

color marking

(CFI,2,3) A

Q: Mounted

X : not Mounted

Ceramic filter Mount , F M
Intermediate

Color Center frev frequency
mark quency (MHz) * D609 * D610 (MHz)
White 10750 O x 10.750
Red 10.700 X X 10.700
Black 10.650 X 0 10650

FM intermediate frequency is determined by the three
types as shown above, Ceramic filters of same center fre-
quency,i.e., of same color coding should be used for CFl, CF2,

and CF 3.

When replacing the ceramic filters. perform the FM Di»
scriminator Adjustment.

A: AEP, UK Model: CFl, 2
WG, IT Model: CFl, 2, 3

MODEL IDENTIFICATION
- Specification Label --

SONYo MODEL N0. ST-vsoz

FM STEREO/FM - AM TIMER TUNER

SERIAL N04
MADE IN JAPAN

AEP. West Germany,
Italian Model: AC: 220V ~ 50/60 Hz

UK Model : AC : 240V ~ 50/60 Hz

LOCATION OF CONTROLS

Display window

Buttons for setting the clock and timer
SYSTEM powea switch

Remote sensor

E] SLEEP button

IE} FREQUENCWTIME button

Buttons tor storing slalion frequencies
TUNING buttons

[El BAND selector

MEMORY SCAN button

AUTO tuning button