Pozosta SEM-35-tdv, 5820-061-13 User Manual
ICF-SC1/SC1PC
SERVICE MANUAL
Ver 1.0 1998.03
SPECIFICATIONS
Circuit system :
Frequency range :
Detection mode :
Speaker : Approx. 36 mm (1 7/16 inches) dia., 8 ohms
Power output :
Output : @ jack (monaural minijack)
Power requirements :
External power source :
Dimensions :
Mass : Approx. 252g (8.9 oz)
Triple conversion superheterodyne
25.000 – 1300.000MHz
(excluding cellular phone band : 823.980 – 849.020 MHz and
868.980 – 894.020 MHz)
AM, NFM, WFM
150mW(at 10% harmonic distortion
DC 6V, four size AA (R6) batteries
DC 6V
Approx. 64 x 177 x 44.3 mm (w/h/d) (2 5/
incl. projecting parts and controls, not including the helical
antenna and the belt holder
Approx. 382g (13.5 oz) incl. alkaline batteries, helical
antenna, and the belt holder
8
x 7 x 1 3/4 inches)
US Model
Supplied Accessories
AC power adaptor (1)
Earphone (1)
Belt holder (1)
Helical antenna (1)
Frequency guidebook (1)
CD-ROM (1) (ICF-SC1PC only)
Serial port connecting cable (1) (ICF-SC1PC only)
Clamp filter (1) (ICF-SC1PC only)
Design and specifications are subject to change without notice.
MICROFILM
PLL SYNTHESIZED SCANNING RECEIVER
TABLE OF CONTENTS
Specifications ........................................................................... 1
1. GENERAL
Location and Function of Controls .................................... 3
2. DISASSEMBLY
2-1. Helical Antenna Removal......................................... 10
2-2. Cabinet (Rear) Assy Removal .................................. 10
2-3. Microcomputer Board, IF Board,
RF Board Removal ....................................................11
3. TEST MODE................................................................ 12
4. ELECTRICAL ADJUSTMENS .............................. 13
5. DIAGRAMS
5-1. Explanation of IC Terminals .................................. 15
5-2. Block Diagram....................................................... 17
5-3. Printed Wiring Boards – IF Section– ..................... 19
5-4. Schematic Diagram – IF Section– ......................... 21
5-5. Printed Wiring Boards – Microcomputer Section– 23
5-6. Schematic Diagram – Microcomputer Section–.... 25
5-7. Printed Wiring Boards – RF Section –................... 27
5-8. Schematic Diagram – RF Section (1/2) – .............. 39
5-9. Schematic Diagram – RF Section (2/2) – .............. 31
6. EXPLODED VIEW..................................................... 35
7. ELECTRICAL PARTS LIST.................................... 36
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH
MARK ! 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.
– 2 –
LOCATION AND FUNCTION OF CONTROLS
FRONT
SECTION 1
GENERAL
This section is extracted from
instruction manual.
– 3 –
SIDE/REAR DISPLAY
– 4 –
– 5 –
– 6 –
– 7 –
– 8 –
– 9 –
SECTION 2
y
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. HELICAL ANTENNA REMOVAL
1
Helical antenna
2-2. CABINET (REAR) ASSY REMOVAL
Battery case lid
1
2
Screws
Claw
Claws
3
4
3
3
2
Screws
Cabinet (Rear) ass
– 10 –
Claws
2-3. MICROCOMPUTER BOARD, IF BOARD, RF BOARD REMOVAL
d
)
IF board
RF board
5
Screws
4
5
Screws
2
Remove solder
3
CN402 (22pin)
Microcomputer board
6
7
Remove solder
!™
!º
Cabinet (Front) assy
8
!¡
!™
!º
1
Knob (VOL
Coaxial connector
IF boar
RF board
!™
!£
– 11 –
!™
!º
9
CN401 (16pin)
Chassis
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