Black Level Adjustment; White Level Adjustment - JVC LX-P1010ZU Service Manual

TP ADJ. INPUT / Test Pattern signal softwear menu
(RGB Input Connector)
70 % Red Horizontal Siganal
70 % Green Horizontal Siganal
70 % Blue Horizontal Siganal
(Right Click menu=3 Phase=2 Horizontal=
2 Red 70% / 3 Green 70% / 4 Blue 70%)
EQUIPMENT
TEST PATTERN SIGNAL
Note:
This adjustment should be done in a darkroom.
1. Supply 70 % Red Horizontal Signal and project on the screen.
2. Press 5 or ∞ button on remote control to select "VCOM R".
3. Press 2 or 3 button so that the flicker on the whole screen
becomes minimal.
4. Supply 70 % Green Horizontal Signal and project on the screen.
5. Press 5 or ∞ button on remote control to select "VCOM G".
6. Press 2 or 3 button so that the flicker on the whole screen
becomes minimal.
7. Supply 70 % Blue Horizontal Signal and project on the screen.
8. Press 5 or ∞ button remote control to select "VCOM B".
9. Press 2 or 3 button so that the flicker on the whole screen
becomes minimal.
Note:
When the flicker is hard to see in the screen in step 1, 4, 7,
press 5 or ∞ button on remote control to select "BLACK
LEVEL", and press 2 or 3 button so that it appears.
However, be sure to return "BLACK LEVEL" to previous
value after LCD COMMON adjustment.

3.4.6. WHITE LEVEL ADJUSTMENT

("WHITE LEVEL"ADUSTMENT)
Purpose:
To set the optimum signal level.
Symptom of Misadjustment:
The picture will be too light or too dark.
TP ADJ. INPUT / Test Pattern signal softwear menu
RGB Input Connector)
TP3505
3 SCALE:
EQUIPMENT
OSCILLOSCOPE
TEST PATTERN SIGNAL
Note:
TP3505: Main PWB
SPECIFICATION
Refer to Description below
=6 Bar=4 3Division
SPECIFICATION
A=3.7 V ± 0.05 V [p-p]
1. Supply Gray Scale Pattern Signal (3 scales).
2. Connect the oscilloscope to TP3505.
3. Press 5 or ∞ button on remote control to select "WHITE
LEVEL".
4. Press 2 or 3 button so that level A becomes 3.7 V ± 0.05 V [p-p].
*When vertical side of the setting is in reversal, the pattern on the screen
Fig. 3-4-10
Fig. 3-4-11

3.4.7. BLACK LEVEL ADJUSTMENT

("BLACK LEVEL"ADUSTMENT)
Purpose:
To set the optimum signal level.
Symptom of Misadjustment:
The picture will be too light or too dark.
TP ADJ. INPUT / Test Pattern signal softwear menu
(RGB Input Connector)
GREEN LEVEL ADJUSTMENT SIGNAL
(Right Click menu=4 Level=3 Green Level)
EQUIPMENT
TEST PATTERN SIGNAL
Note:
This adjustment should be done in a darkroom.
1. Supply Green Level Adjustment Signal and project on the
screen.
2. Press 5 or ∞ button on remote control to select "BLACK
LEVEL".
3. Press 2 or 3 button so that Portion (B) are invisible and Portion
(A) are visible on the screen.
LX-P1010ZU/ZE
SPECIFICATION
Refer to Description below
(PA014) 18