8. V-COM Adjustment (PD-92 board)9. White Balance Adjustment (PD-92 board)
Set the DC bias of the common electrode drive signal of LCD to theCorrect the white balance.
specified value.If deviated, the LCD screen color cannot be reproduced.
If deviated, the LCD display will move, producing flicker andModeVTR stop
conspicuous vertical lines.
SignalNo signal
ModeVTR stopMeasurement pointCheck on LCD display
SignalNo signalMeasuring instrument
Measurement pointCheck on LCD displayAdjustment pageE
Measuring instrumentAdjustment addressD1, D2
Adjustment pageESpecified valueThe LCD screen should not be colored.
Adjustment addressD7
Note1: Check the white balance only when replacing the following
Specified valueThe brightness difference between theparts. If necessary, adjust them.
section A and section B is minimum.
1. LCD panel
Note1 :Perform OBright Adjustment" and OContrast Adjustment�2. Light induction plate
before this adjustment.3. IC5502
Adjusting method:Adjusting method:
1) Select page: 0, address: 01, and set data: 01.1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 51, and pr2) Select paess the Pge: 3,AUSE address: 01, set data: 51, and press the PAUSE
button of the adjusting remote commander.button of the adjusting remote commander.
3) Select page: 2, address: 7D, and set data: 87.3) Select page: 2, address: 7D, and set data: 03.
4) Select page: E, address: D7, change the data so that the brightness4) Select page: E, address: D1 and D2, and set the data to the initial
of the section A and that of the section B is equal.value.
5) Press the PAUSE button of the adjusting remote commanderNote: To wr.ite in the non-volatile memory (EEPROM), press
6) Select page: 3, address: 01, set data: 00, and press the Pthe PAUSE bAUSEutton of the adjusting remote commander each
button of the adjusting remote commander.time to set the data.
7) Select page: 2, address: 7D, and set data: 00.
Address Data
8) Select page: 0, address: 01, and set data: 00.D194
D281
5) Check that the LCD screen is not colored. If colored, change the
BAdata of page: E, address: D1 and D2 so that the LCD screen is
not colored.
ABNote: To write in the non-volatile memory (EEPROM), press
the PAUSE button of the adjusting remote commander each
time to set the data.
BA6) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
7) Select page: 2, address: 7D, and set data: 00.
AB
8) Select page: 0, address: 01, and set data: 00.
Fig. 5-1-27.
5-30 |
ACEC
