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35

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

1

Initialisation of EEPROM

1. Turn on the power (the lamp lights
up) and warm up the system for 15
minutes.

1. Make the following settings.
Press S2002 to call the process mode and
execute "SS2" on SS menu.

2-1

R/G/B Brightness
adjustment

1. Select the following group and
subjects.
Group : AD
Subject : R-Bright
G-Bright
B-Bright
(Process GAMMA interlock)
2. Feed the SVGA 16-step signal with
an amplitude level of 50% (0.35 Vp-
p).

1.Check the setting valve.
R/G/B-Bright: 63

2-2

R/G/B Contrast adjustment

1. Select the following group and
subjects.
Group : AD
Subject : R-Contrast
G-Contrast
B-Contrast
(Process GAMMA interlock)
2. Feed the SVGA white signal with
an amplitude level of 96% (0.67 Vp-
p).

1.Watching the screen, adjust the R-, G- and
B-Contrast settings so that because of some
pixel dropouts, the bright colour zone should
become just about a half.

3

DTV Brightness / Contrast
adjustment

1. Feed a 480P component 10-step
signal with 100% amplitude.
2. Select the following group and
subjects.
Group : DTV
Subject : Bright
Contrast
(Process GAMMA interlock)

1. Check the setting value.
Contrast (White Level): 45
Bright (Black Level): 32

4

DVD Brightness / Contrast
adjustment

1. Feed a 480P component 10-step
signal with 100% amplitude.
2. Select the following group and
subjects.
Group : DVD
Subject : Bright
Contrast
(Process GAMMA interlock)

1. Check the setting value.
Contrast (White Level): 46
Bright (Black Level): 34

5

Video Brightness / Contrast
adjustment

1. Feed an NTSC composite video
10-step signal (no setup) with 100%
amplitude.
2. Select the following group and
subjects.
Group : VIDEO
Subject : Bright
Contrast
(Process GAMMA interlock)

1. Check the setting value.
Contrast (White Level): 43
Bright (Black Level): 142

6

PSIG adjustment

1. Select the following group and
subjects.
Group : OUTPUT2
Subject : PSIG-H
PSIG-L
2. Check the fixed value.
PSIG-H: 140
PSIG-L: 105

1. Feed the SVGA signal and adjust to make
the following PSIG waveform. (TP1201)

36

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

7

R/G/B Black
Level Signal
Amplitude adjustment

1. Select the following group and
subjects.
Group : OUTPUT1
Subject :
On Green adjustment
G1-BLK
G1-GAIN
On Red Adjustment
R1-BLK
R1-GAIN
On Blue Adjustment
B1-BLK
B1-GAIN
2. Make sure the process adjustment
colour bags appear onscreen.
3. Connect a oscilloscope to pin(2) of
P1302 for the G setting.
4. Connect the oscilloscope to pin(1)
of P1302 and pin(3) of P1302 for the
R and B settings, respectively.

1. Select G1-GAIN. Using the set's control
switch or the remote controller's button,
adjust the signal amplitude to 4.30 Vp-p
± 0.05 V.
2. Now select G1-BLK. Using the set's
control switch or the remote controller's
button, adjust the white-to-white level to 1.20
Vp-p 

± 0.05 V.

3. Do the same for the R and B settings.

8

Panel ghost
adjustment

1. Get the SVGA60Hz ghost test
pattern on the project screen (thick
black characters on RGB halftone
background).
Group: OUTPUT3
2. Sample hold pulse phase
adjustment
Make sure the RCKPHASE setting is
282 (initial value).
Make sure the GCKPHASE setting is
282 (initial value).
Make sure the BCKPHASE setting is
282 (initial value).
3. ENBX width adjustment
Make sure this setting is the fixed
value of 4 (initial value).
4. ENBXR phase adjustment
(R-LCD ghost adjustment)
5. ENBXG phase adjustment
(G-LCD ghost adjustment)
6. ENBXB phase adjustment
(B-LCD ghost adjustment)
Make sure these three settings are all
the initial value of 13.

1. ENBXR phase adjustment (R-LCD ghost
adjustment) Increase the setting until the
ghost (Note) becomes visible on the left of
the black characters on the R halftone
background.
Decrease the setting by 1 point until the
above ghost disappears.
Lower the setting by another 1 point.
2. ENBXG phase adjustment (G-LCD ghost
adjustment)
Take the steps as 1 above on the G halftone
background.
3. ENBXB phase adjustment (B-LCD ghost
adjustment)
Take the steps as 1 above on the B halftone
background.
Note: Left-hand ghost ÅcA faint duplicate
image of characters or the like seen 12 dots
leftward on a screen
Reference: The above adjustments are
needed because the EPSON panels may
have 1- or 2-point deviation between the
LCD lot productions.

9

RGB counter voltage
adjustment

1. Feed the counter voltage
adjustment signal. (SVGA)
2. Select the following group and
subjects.
Group : OUTPUT3
Subject : RC
GC

1. Using the remote controller’s button,
adjust the setting so that the flickering be
minimum.
2. Adjust the setting so that the image
comes to the centre of the screen.

10.

RGB white balance
adjustment

1. Feed the RGB 50% grey signal.
(SVGA)
2. Select the following group and
subjects.
Group : OUTPUT1
Subject : R1-BLK(R)
B1-BLK(B)

1. Adjust the R1-BLK and B1-BLK(B)
settings so that the chromaticity based on
CL200 becomes as follows (8500K).
x=290±5 y=325±5