Electrical Adjustment - Sharp PG-C20XU Service Manual

Hook up a signal generator, or a DOSV or Mac personal computer to the projector in order to feed the
signals specified in the Adjusting conditions.
ADJUSTMENT PRECAUTIONS
1 Precautions for initializing
It takes 5 seconds to get the memory initialized and the initial settings rewritten. To go through the initialization, the
onscreen display background on the process menu screen turns red and the message "INITIALIZE" appears
onscreen for 5 seconds after pressing the specified key. Finally turn off the AC power (unplug the power cord).
2 Initial factory settings (S4, S5)
It takes 5 seconds to get the initial factory settings written. Do not turn off the main power during this procedure. To
ensure this waiting time, "S4" or "S5" appears on the onscreen display for 5 seconds. When this sign disappears,
you can keep on the power or turn it off.
3 Video adjustment
Be careful not to cut off the signals during the video adjustment.
No. Adjusting point
1 EEPROM
initialization
2 Brightness
adjustment

ELECTRICAL ADJUSTMENT

Adjusting conditions
1. Turn on the power (with the
lamp on) and warm up the
set for 15 minutes.
2. Select the following group,
sub-group and subject.
Group : Option
Sub-group:
EEPROM Initialize
Subject : Initialize Start
1. Feed the XGA 10-step sig-
nal.
2. Select the following group,
sub-group and subjects.
Group : Adjust PC Image
Sub-group: AD
Subject :
R-Bright (In R adjustment)
G-Bright (In G adjustment)
B-Bright (In B adjustment)
3. Connect the synchroscope
(0.2V/div.) to the following
TPs.
In R adjustment TP1403
In G adjustment TP1402
In B adjustment TP1401
Adjusting procedure
» Make the following settings.
Press SW1601 to call the process mode. Initialize
the EEPROM by execution of Initialize Start. (After
the execution of Initialize Start, the EEPROM will not
be initialized unless the power is once turned off.)
» Adjust the setting just until the color tone level 0 starts
moving.
0-gradation
23
PG-C20XU
PG-C20XE
AN-Z7T
0.8Vp-p
10-gradation