DOWNLOAD Sony ICF-C411 Service Manual ↓ Size: 1.98 MB | Pages: 20 in PDF or view online for FREE

Model
ICF-C411
Pages
20
Size
1.98 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-c411.pdf
Date
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4
ICF-C411
SECTION 2
GENERAL
This section is extracted
from instruction manual.
5
ICF-C411
• The equipment can be removed using the following procedure.
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (UPPER) SECTION
Set
Cabinet (Upper) Section
Main Board
Key Board, LED Board
1
screws (P 3x14)
5
cabinet (upper) section
4
CN301
2
screws (P 3x14)
3
screw (P 3x14)
6
ICF-C411
3-2. MAIN BOARD
3-3. KEY BOARD, LED BOARD
9
screws (P 3x10)
0
MAIN board
8
Removal the solder
2
screw (P 3x10)
3
screw (P 3x10)
5
claw
4
claw
6
1
knob (volume)
7
CN1
1
screw (P 3x10)
2
KEY board
4
LED board
5
LED101
3
claw
7
ICF-C411
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT3
86.5 MHz
109.5 MHz
FM TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CT2
86.5 MHz
109.5 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CT4
515 kHz
1,750 kHz
AM TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
600 kHz
1,400 kHz
  FM SECTION     0 dB = 1 µV
Setting:
BAND switch: FM
VOLUME control: MIN
  AM SECTION
Setting:
BAND switch: AM
VOLUME control: MIN
SECTION 4
ELECTRICAL ADJUSTMENTS
FM lead wire
antenna terminal
0.01
µ
F
FM RF signal
generator
400Hz, 30% FM modulation
frequency deviation 
±
22.5kHz
Output level: as low as possible
set
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
400Hz, 30%
 AM modulation
Output level: as low as possible
• Connecting Level Meter (FM and AM)
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally done
by the trimmer capacitors.
speaker terminal
set
16 
Ω
level meter
(range: 0.5–5 V ac)
Adjustment Location: See page 8.
Page of 20
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  • DOWNLOAD Sony ICF-C411 Service Manual ↓ Size: 1.98 MB | Pages: 20 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony ICF-C411 in PDF for free, which will help you to disassemble, recover, fix and repair Sony ICF-C411 Audio. Information contained in Sony ICF-C411 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.

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