Sony PMC-MD55 Service Manual page 139

DISPLAY SECITON
Dimmer Adjustment
Connection:
LCD board
TP (DIMMER)
TP (GND)
1. Connect a digital voltmeter to TP (DIMMER) and TP (GND)
on the LCD board.
2. Adjust RV550 so that the value of digital voltmeter becomes
2.83 V.
Specified Value: 2.83 to 2.93 V
Note: Connect the liquid crystal display unit (LCD500) to the LCD board
when performing adjustment.
Adjustment Location:
– LCD BOARD (Component Side) –
RV550
Dimmer Adjustment
– LCD BOARD (Conductor Side) –
TP (DIMMER)
digital voltmeter
+
–
CN553
TP (GND)
– 30 –