Sony ST D505 Service Manual

Page 1

ST-D505/ D705

SERVICE MANUAL

AEP Model
UK Model

Photo: ST-DSOS

SPECIFICATIONS

Tuner

System FM stereo

FM/AM superheterodvne tuner

FM tuner section
Tuning range 875 to 108 MHz

Antenna 75 ohms unbalanced

Intermediate frequency to] MHz

SW1, SW2, MW/LW tuner section

ian model)
P, UK, Germany models)

UK, Germanv models)

Tuning range MW: 522 to 1,611 kHz Iltal
531 101,602kHZ(AE
LW: 144 to 238kHz (Italian model)
153 to 279kHZ IAEP,
Antenna AM loop antenna

External antenna terminal
450kHz

240V AC. 50Hz (UK mode
220V AC, SOHZ (AEP, Ger
10W

Intermediate frequency
Power requirements

Power consumption

l)
many, Italian models)

AC outlet 2 switched, total 450 W max.
Weight Approx 2.6 kg (5 lbs 12 02)
Dimensions Approx. 355x 95X320 mm

(w/h Id, including projections)

(14 X 33/; X 12 5/3 inches)

SAFETV-RELATED COMPONENT WARNING! !

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 PUB-
LISHED 8V SONY.

FM STEREO/FM-AM TUNER

SONYa

Page 2

ST-D505/ D705

SECTION 1
SERVICING NOTES
Note on Ceramic Filter (CF1.2,3) A Replacement. Oi Mounted
x : not Mounted
This set employs three ceramic filters (-‚¬171.23) A which Ceramic filter Mount FM

should have the same color marking to identify their center intermediate
frequency. Therefore FM lF offset adjustment by * D609, * COIOI Center fre- * D609 * D610 frequency
D610 is necessary to match the center frequency of the mark quency (MHZ) (MHZ)
ceramic filters used with FM intermediate frequency. White 10.750 O x 10,750

Red 10.700 X X 10.700

Black 10.650 X 0 10.650

cola! marking
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 CF 1. CFZ,
and CF 3.
When replacing the ceramic filters, perform the FM DiA
scriminator Adjustment.

(CF1.2,3) A

A: AEP, UK Model: CF1.2
Germany, [T Model: CF], 2, 3

MODEL IDENTIFICATION
- Specification Label -

ST -D505
ST-D705

SONY; MODEL N0. @-

FM STEREO/FM - AM TIMER TUNER

SERIAL N0.
MADE IN JAPAN J

AEP, Germany, Italian Model: AC: 220V-230V ~50/60 Hz
UK Model: AC: 240V ~ 50/60Hz

Signal of System Control Connector

CNJ901 cm701
SYSTEM CONTROL 1 SYSTEM CONTROL 2
Him LITE-ll]

G) G) 0) ®
I L-CH OUT 1 AUB
2 GND 2 GND
3 R-CH OUT 3