ELECTRICAL ADJUSTMENT-1/1
TUNER C.B (PARTS SIDE)
L5
5
L4PVC1C
T2
PVC1A
1
L3
PVC1
4
PVC1DPVC1B
23
IC2~
16
3test point
T1
6
< TUNER SECTION >
1. AM IF Adjustment4. AM Tracking Adjustment
Settings : Y Test point IC2(KA22425D)23PINSettings : Y Test point IC2(KA22425D)23PIN
Y Adjustment location: T2Y Adjustment location: L5,PVC1D
T2 ................................................................................L5 .......................................................455kHz600kHz Waveform max
Method : Set to 455kHz and adjust T2 so that the Wave.(AP20AEZ,AP20WAU MODEL)
L5 ...................150kHz Waveform max (AP21AEZ MODEL)
2. AM Frequency Range Adjustment(AP20AEZ,AP20WAUPVC1D .......... 1400kHz Waveform max (AP20AEZ MODEL)
MODEL)PVC1D ............ 285kHz Waveform max (AP21AEZ MODEL)
Settings : Y Test point IC2(KA22425D)23PINPVC1D ........ 1500kHz Waveform max (AP20WAU MODEL)
Y Adjustment location: T1,PVC1CMethod : Set to 600kHz,150kHz and adjust L5 so that the Wave
T1 .......................... 517kHz(AP20AEZ,AP20WAU MODEL)to maximum.
PVC1C .................................... 1635kHz (AP20AEZ MODEL)Method : Set to 1400kHz,285kHz,1500kHz and adjust PVC1D so
PVC1C .................................. 1750kHz (AP20WAU MODEL)that the Wave to maximum.
Method : Set to 517kHz and adjust T1 so that the Wave .
Method : Set to 1635kHz,1750kHz and adjust PVC1C so that the5. FM Frequency Range Adjustment
Wave .Settings : Y Test point IC2(KA22425D)23PIN
Y Adjustment location: L4,PVC1A
3. LW Frequency Range Adjustment(AP21AEZ MODEL)L4 ......................... 87.4MHz(AP20AEZ,AP21AEZ MODEL)
Settings : Y Test point IC2(KA22425D)23PINL4 ........................................... 87MHz (AP20WAU MODEL)
Y Adjustment location: T1,PVC1CPVC1A ................ 108.3MHz(AP20AEZ,AP21AEZ MODEL)
T1 ................................................................................PVC1A ...................................145kHz109MHz(AP20WAU MODEL)
PVC1C .........................................................................Method : Set to 87.4MHz,87MHz and adjust L4 so that the Wave.295kHz
Method : Set to 145kHz and adjust T1 so that the Wave .Method : Set to 108.3MHz,109MHz and adjust PVC1A so that
Method : Set to 295kHz and adjust PVC1C so that the Wave .the Wave .
6. FM Tracking Adjustment
Settings : Y Test point IC2(KA22425D)23PIN
Y Adjustment location: L3,PVC1B
L3 ....................................................... 88MHz Waveform max
PVC1B ............................................. 108 MHz Waveform max
Method : Set to 88MHz and adjust L3 so that the Wave to
maximum.
Method : Set to 108MHz and adjust PVC1B so that the Wave to
maximum.
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