6 ADJUSTMENT PROCEDURES 1
WHEN INSTALLING THE BASE BODY
UNIT INTO THE UNIT AT THE USER’S
LOCATION:
The following adjustments of the Optical Block Unit must be
performed.
a. Focus Adjustment
Note:
Perform this adjustment only if necessary. (Normally, it will
not be necessary.)
b. Mechanical Picture Position Adjustment (Tilt)
c. Electrical Picture Position Adjustment
WHEN INSTALLING THE OPTICAL
BLOCK UNIT INTO THE UNIT AT THE
USER’S LOCATION:
The following adjustments of the Optical Block Unit must be
performed.
a. Focus Adjustment
Note:
Perform this adjustment only if necessary. (Normally, it will
not be necessary.)
b. Mechanical Picture Position Adjustment (Tilt)
c. Electrical Picture Position Adjustment
d. Copying the adjustment data of the Optical Block Unit to
EEPROM IC on the Main C.B.A. (Circuit Board DG)
e. Verifying the Color Wheel Index Delay and the white
balance on the screen
Adjustment Preparations:
1. Install all parts except the Front Cover Unit and the Optical
Cover.
Fig. M1-1
Note:
When the rear cover is disassembled, the screen can be
moved back and forth, which could affect the video display
vertical position. This could also cause the vertical adjust
to be at or near its limit.
Only try the picture position adjustment with the rear cover
assembled!
2. Turn the power on.
3. Press and hold the VOLUME DOWN button on the unit and
the RECALL key on the remote for more than 5 seconds in
power on condition. The unit will go into Work Mode.
("WORK MODE" will appear on the screen.)
Optical Block Unit
<Front View>
(With Front Cover Unit and Optical Cover removed)
4. 1) Press and hold the VOLUME DOWN button on the unit
and the SWAP key on the remote for more than 1
second. The unit will go into the Factory Adjust Mode.
(FACTORY ADJUST menu will appear.)
Fig. M1-3
2) Press the CH UP/DOWN key on the remote to select
"OTHER" on menu and press the OK key. (OTHER
menu will appear.)
Fig. M1-4
<Factory Adjust Mode>
FACTORY ADJUST 1/1
M:2.020
VIDEO ADJ
SOUND
FAN
OTHER
PARTIAL
DT BOARD
EEP COPY L->DG
DEFAULT SET
To release this mode:
1. After completing the adjustments, press the CH UP/DOWN
key on the remote to return to the OTHER menu.
2. Press the 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.
Or, turn off the power.
3. Install the Optical Cover with the 2 Screws and the Front
Cover Unit.
<Factory Adjust Mode>
(OTHER menu 1/1)
OTHER 1/1
OPT HPOSI 8000
OPT VPOSI 8000
CW INDEX DELAY00ED
WB 00
DDP
GC:05071401
PT-56DLX75 / PT-61DLX75
42
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