Panasonic PT-56DLX25 Service Manual page 50

PT-56DLX75 / PT-61DLX75
COLOR WHEEL INDEX DELAY
ADJUSTMENT
Purpose:
To set the standard color index.
Symptom of Misadjustment:
Many vertical stripes will appear.
O P T H P O S I
O P T V P O S I
C W I N D E X
W B
D D P
G C : 0 5 0 6 0 1 0 1
SET UP:
1. Install the Optical Block Unit into the Cabinet.
2. Enter Work Mode. Then, enter Factory Adjust Mode.
3. Press the CH UP/DOWN key on the remote to select
"OTHER" on menu and press the OK key. (OTHER
menu will appear.)
4. Press the CH UP/DOWN key on the remote to select
"CW INDEX DELEY" on menu and press the ASPECT
key once to select "Red ramp pattern."
To release this mode:
1. After completing the adjustment, press the CH UP/DOWN
key on the remote to return to the OTHER menu.
2. Then, press RECALL key twice to return to Work Mode, and
press and hold the VOLUME DOWN button on the unit and
the RECALL key on the remote for more than 5 seconds.
Alternatively, turn off the power.
O T H E R 1 / 1
8 0 0 0
8 0 0 0
D E L A Y 0 0 F D
0 0
<Red ramp pattern>
1. Display the Red100% ramp pattern by pressing the
ASPECT key.
2. Adjust "CW INDEX DELAY" value by pressing the
VOLUME UP/DOWN key so that red ramp pattern is
even, with no discoloration.
O T H E R
O P T H P O S I
O P T V P O S I
C W I N D E X
W B
D D P
G C : 0 5 0 6 0 1 0 1
<Red ramp pattern>
3. Display the Green100% ramp pattern by pressing the
ASPECT key.
4. Confirm the green ramp pattern is even, with no
discoloration. If not, adjust "CW INDEX DELAY" value
by pressing the VOLUME UP/DOWN key.
O T H E R
O P T H P O S I
O P T V P O S I
C W I N D E X
W B
D D P
G C : 0 5 0 6 0 1 0 1
<Green ramp pattern>
5. Display the Blue100% ramp pattern by pressing the
ASPECT key.
6. Confirm the blue ramp pattern is even, with no
discoloration. If not, adjust "CW INDEX DELAY" value
by pressing the VOLUME UP/DOWN key.
O T H E R
O P T H P O S I
O P T V P O S I
C W I N D E X
W B
D D P
G C : 0 5 0 6 0 1 0 1
<Blue ramp pattern>
7. Repeat the above steps until all patterns are even, with
no discoloration.
Note:
After this adjustment, do not copy using the EEP COPY L->DG
in the Factory Adjust Mode.
Otherwise, the factory default data of the Optical Block Unit will
be copied to EEPROM IC on the Main C.B.A. (Circuit Board
DG), and re-adjustment will be necessary.
48
1 / 1
8 0 0 0
8 0 0 0
D E L A Y 0 0 F 0
0 0
Fig. E5-1
1 / 1
8 0 0 0
8 0 0 0
D E L A Y 0 0 F 0
0 0
Fig. E5-2
1 / 1
8 0 0 0
8 0 0 0
D E L A Y 0 0 F 0
0 0
Fig. E5-3