Sharp LC-30HV4U Service Manual page 23

1) Analog adjustment
(1) Voltage adjustment
Item
1 3.3 V Adjustment
2 1.8 V Adjustment
Adjusting conditions/points
Page: 2
Location: TP4
Page: 2
Location: Pin (6) of CN9
23
Adjusting procedure
• Connect a DC voltmeter to TP4 on the PC I/F unit.
Move the cursor to "Ë+Badj.3.3V" and use "VOL" (+)
and (–) keys to adjust the voltage to 3.30 ± 0.01 V.
PC I/F unit
TP4 TP4 TP4
• After adjustment to 3.3 V, move the cursor to the
"Ë+Badj.1.8V" line and press the "ENTER" key on
the remote controller. Adjustment will be made
automatically.
If "ERR" appears, adjust the voltage at pin (6) of
CN9 on the PC I/F unit to 1.90 ± 0.01 V.
LC-30HV4U
LC-30HV4D
6 6
CN9 CN9