Read Sony ICF-CD863V Service Manual online
13
ICF-CD863V
Adjustment Location:
AUTO BRIGHTNESS ADJUSTMENT
Connecting:
1. Set to power off state.
2. Connect a digital voltmeter to TP (DIMMER) and TP (GND)
2. Connect a digital voltmeter to TP (DIMMER) and TP (GND)
on the LCD board and confirm that the voltage is 0 V.
3. Turn on the power.
4. Connect the digital voltmeter to TP (DIMMER) and TP (GND)
4. Connect the digital voltmeter to TP (DIMMER) and TP (GND)
on the LCD board and adjust RV401 so that the voltage be-
comes 1.5
comes 1.5
± 0.05 V.
5. Turn off the power.
6. Applied sufficient light to IC403 (brightness sensor) on the
6. Applied sufficient light to IC403 (brightness sensor) on the
DIMMER board and confirm that the voltage is 3.3
± 0.3 V.
7. Short the BP404.
Adjustment Location:
digital voltmeter
TP (DIMMER)
TP (GND)
100 k
Ω
LCD board
+
–
– MAIN BOARD (Component Side) –
L1 AM VCO Voltage Adjustment
RV1 FM Stereo Adjustment
RV2 AM IF Adjustment
AM
Tracking
Adjustment
Tracking
Adjustment
CT1
L5
L5
}
FM/TV (2 – 6 ch)
Tracking Adjustment
Tracking Adjustment
L2
CT2
CT2
}
TV (7 – 13 ch)
WEATHER (1 – 7 ch)
Tracking Adjustment
WEATHER (1 – 7 ch)
Tracking Adjustment
CT3
L3
L3
}
– MAIN BOARD (Conductor Side) –
TP (ANT)
TP (FM GND)
TP (RADIO B+)
TP (VT)
TP (FM ST)
TP (AM GND)
– LCD BOARD (Component Side) –
RV401 Auto Brightness Adjustment
– LCD BOARD (Conductor Side) –
TP (GND)
TP (DIMMER)
– DIMMER BOARD (Conductor Side) –
IC403
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