TROUBLESHOOTING GUIDE
4. CH DON’T STOP
Check the input signal conditions
NG : Loss of signal or weak signal
OK : Go to the figure g
h | 33V | 5V |
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5V/33V LINE |
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| U102 | IF OUT |
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| TUNER |
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SF101
SAW FILTER
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| C103 |
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#29 | #30 |
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| #15 |
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| #4 |
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| RF AGC OUTPUT |
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| RF AGC Voltage |
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| #14 | AFT |
| #10 |
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I701 |
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MICOM |
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AFT window Voltage |
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| 2.1V~2.5V |
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| #27 | SDA |
| #11 |
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| #28 | SCL |
| #12 | #49 | L501 |
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| #48 | VCO COIL |
#10 | #11 | #12 | SDA | SCL |
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XC701 |
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32.768KHz |
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#5 | #6 |
| VCO coil |
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| 5V |
| I703 | Check |
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Check |
| EEPROM | SDA/SCL |
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| #8 |
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the crystal |
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5V
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