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TUNER ADJUSTMENTS
• Use a plastic screw driver for adjustments.
• Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.
• Set of unit
Supply voltage
: DC 12V
Speaker
: 32
Function switch
: RADIO
PARTS LOCATION
1. AM ADJUSTMENT
Step Adjusting
Circuit
Frequency
1
IF
(450 KHz)
2
Tuning
3
coverage
1611 KHz
4
Tracking
5
1404 KHz
1. FM ADJUSTMENT
Step Adjusting
Circuit
Frequency
1
IF
98.0MHz
10.7NHz
2
Tuning
3
coverage
108.0MHz
4
Tracking
90.0.MHz
5
106.0MHz
This is a basic adjustment.
Tuning
Input Connection
Instrument
999 KHz
AM sweep
generator
522 KHz
---
---
603 KHz
AM signal
generator
BAND SELECT SWITCH : FM
Tuning
Input Connection
Instrument
FM sweep
generator
87.5Hz
---
---
FM signal
generator
Output Connection
Input
Instrument
Loop ANT.
VTVM
oscilloscope
---
Digital
---
voltmeter
Loop ANT.
VTVM
oscilloscope
FM Dummy Antenna:75Ω unbalance
Output Connection
Input
Instrument
TP3(H)
VTVM
TP4(E)
oscilloscope
---
Digital
---
voltmeter
TP1(H)
VTVM
TP2(E)
oscilloscope
- 2 -
Adjust-
VTVM
Output
ment
Oscilloscope
Speaker
T103
TP7(H)
T101
1.5V±0.05V
TP2(E)
---
7.4V±0.1V
Speaker
AM COIL
CT102
Adjust-
VTVM
Output
ment
Oscilloscope
TP5(H)
---
Non Adjustment
TP4(E)
TP6(H)
L102
2.0V±0.1V
TP2(E)
---
7.2V±0.1V
TP8(H)
L101
TP9(E)
CT103
Max.
Max.
Max.
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