DOWNLOAD Sony ICF-C290 / ICF-C290L Service Manual ↓ Size: 961.45 KB | Pages: 12 in PDF or view online for FREE

Model
ICF-C290 ICF-C290L
Pages
12
Size
961.45 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-c290-icf-c290l.pdf
Date
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Sony ICF-C290 / ICF-C290L Service Manual ▷ View online

(
): Italian model
FM  FREQUENCY  COVERAGE  ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
86.5 MHz (87.35 MHz)
CT3
109.5 MHz (108.25 MHz)
FM  TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
CT2
109.5 MHz (108.25 MHz)
AM  FREQUENCY  COVERAGE  ADJUSTMENT (C290)
Adjust for a maximum reading on level meter.
L4
520 kHz (516.5 kHZ)
CT4
1,650 kHz (1,631.5 kHz)
AM  TRACKING  ADJUSTMENT (C290)
Adjust for a maximum reading on level meter.
L1
600 kHz
CT1
1,400 kHz
LW  FREQUENCY  COVERAGE  ADJUSTMENT (C290L)
Adjust for a maximum reading on level meter.
L4
145 kHz
CT6
265 kHz
LW  TRACKING  ADJUSTMENT (C290L)
Adjust for a maximum reading on level meter.
L1
160 kHz
CT5
240 kHz
AM  IF  ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455 kHz
– 5 –
SECTION  3
ELECTRICAL  ADJUSTMENTS
FM  SECTION
Setting:
BAND switch: FM
AM  SECTION
Setting:
BAND switch: AM/LW
• Repeat the procedures in each adjustment several times, and
the frequency coverage and tracking adjustments should be fi-
nally done by the trimmer capacitors.
FM RF signal 
generator
400 Hz, 30% FM modulation 
frequency deviation 
±
 22.5 kHz   
Output level: as low as possible
0.01 
µ
F
set
lead antenna 
input terminal
AM RF signal 
generator
400 Hz, 30%
AM modulation
Output level: as low as possible
Put the lead-wire
antenna close to 
the set.
level meter
set
speaker terminal
8 
Ω
+
–
– 6 –
Adjustment Location: MAIN board (Conductor Side)
IC1
CT6
LW FREQUENCY
COVERAGE
AM FREQUENCY
COVERAGE
FM TRACKING
AM TRACKING
LW TRACKING
AM IF
FM FREQUENCY
COVERAGE
L4
L3
L3
CV1
CT2
CT5
L1
T1
CT1
CT4
CT3
– 10 –
– 9 –
4-2.
SCHEMATIC  DIAGRAM  (EXCEPT  E  MODEL)
•  See page 15 for IC Block Diagrams.
ICF-C290/C290L
– 14 –
– 13 –
4-4.
SCHEMATIC  DIAGRAM  (E  MODEL)
•  See page 15 for IC Block Diagrams.
ICF-C290/C290L
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