Sanyo 164 081 00, Service Manual

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TP4
TP3
TP7
CT102
T101
L102
TP1
L101
TP2
TP6 CT101
TP5
TP8
TP9
• 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
TUNER ADJUSTMENTS
This is a basic adjustment.
1. AM ADJUSTMENT
Step Adjusting Tuning Adjust- VTVM
Circuit Frequency Instrument Input Instrument Output ment Oscilloscope
1 IF 999 KHz AM sweep Loop ANT. VTVM Speaker T103 Max.
(450 KHz) generator oscilloscope
2 Tuning 522 KHz --- --- Digital TP7(H) T101 1.5V
±
0.05V
3 coverage 1611 KHz --- --- voltmeter TP2(E) --- 7.4V ± 0.1V
4 Tracking 603 KHz AM signal Loop ANT. VTVM Speaker AM COIL Max.
5 1404 KHz generator oscilloscope CT102
Input Connection Output Connection
1. FM ADJUSTMENT BAND SELECT SWITCH : FM FM Dummy Antenna:75 Ω unbalance
Step Adjusting Tuning Adjust- VTVM
Circuit Frequency Instrument Input Instrument Output ment Oscilloscope
1 IF 98.0MHz FM sweep TP3(H) VTVM TP5(H) --- Non Adjustment
10.7NHz generator TP4(E) oscilloscope TP4(E)
2 Tuning 87.5Hz --- --- Digital TP6(H) L102 2.0V
±
0.1V
3 coverage 108.0MHz --- --- voltmeter TP2(E) --- 7.2V ± 0.1V
4 Tracking 90.0.MHz FM signal TP1(H) VTVM TP8(H) L101 Max.
5 106.0MHz generator TP2(E) oscilloscope TP9(E) CT103
Input Connection Output Connection