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37

Subject : VROS/VGOS/VBOS
2. Press the control switch or the
remote control’s mute button (to set
the gamma correction to the process
setting).

38

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

17

Video AGC

1. Feed the split colour bar signal.
Group : VIDEO 1
Subject : AGC

Using the control switches or the remote
controller buttons, adjust the setting until the
white signal becomes bit-less.

18

Tint

1. Feed the split colour bar signal.
Group : VIDEO 1
Subject : TINT
2. Connect the oscilloscope to pin (4)
of P801.

Using the control switches or the remote
controller buttons, adjust the data to have
the -(B-Y) waveform downhill straight.

After adjusting, adjust the value of TINT up 3
point.

19

NTSC colour saturation
level

1. Feed the split colour bar signal.
Group : VIDEO 1
Subject : N-COLOR
2. Connect the oscilloscope to pin (1)
of P801.

Using the control switches or the remote
controller buttons, adjust the difference
between the 100% white portion and the red
portion to 0.00 ±0.05 Vp-p. (same as 100%
white)

20

PAL colour saturation level

1. Feed the split colour bar signal.
Group : VIDEO 1
Subject : P-COLOR
2. Connect the oscilloscope to pin (1)
of P801.

Using the control switches or the remote
controller buttons, adjust the difference
between the 100% white portion and the red
portion to 0.00 ±0.05 Vp-p. (same as 100%
white)

21

SECAM colour saturation
level

1. Feed the split colour bar signal.
Group : VIDEO 1
Subject : S-COLOR
2. Connect the oscilloscope to pin (1)
of P801.

Using the control switches or the remote
controller buttons, adjust the difference
between the 100% white portion and the red
portion to 0.00 ±0.05 Vp-p. (same as 100%
white)

39

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

22

Video input panel signal
amplitude adjustment

1. Feed the NTSC 10-step signal.
2. Select the following group and
subject.
Group: VIDEO2
Subject: R1-GAIN
B1-GAIN
3. Connect the oscilloscope to
TP1101 (R) and TP1201 (G).
4. For the blue colour, connect the
oscilloscope to TP1301 (B) and
TP1201
(G).

• 

Select R1-GAIN and adjust the setting
so that the R and G signals have the
same amplitude.

• 

For the blue colour, adjust the setting
the same way.

23

Video white balance

1. Feed the NTSC monoscope pattern
signal
Group : VIDEO 2
Subject : R1-BLK
B1-BLK

Using the control switches or the remote
controller buttons, adjust so that the entire
screen looks evenly colourless.

24

DTV white balance

1. Feed the monoscope pattern
signal.
2. Group: DTV
Subject: CR-OFFSET
CB-OFFSET

Using the control switches or the remote
controller buttons, adjust so that the entire
screen looks evenly colourless.

25

Set-up

1. Group: VIDEO1
Subject: SET UP B
SET UP C

Make sure the settings are 11 for SET UP B
and 2 for SET UP C.

26

Automatic colour correction

1. Using the colour correction system
(ccdc), apply automatic colour
correction.

Make sure there is no noticeable colour
irregularity left on the screen.

27

Colour system performance
check

1. Receive the colour bar signal.

In the process mode and select L1. Check
the colour and tint.

28

Video system performance
check

1. Receive the monoscope pattern
signal.

In the process mode and select L2. Check
the picture, brightness and sharpness.

29

Audio system performance
check

In the process mode nad select L3. Check
the bass, treble.

30

RGB performance check

1. Receive the RGB signal.

In the process mode and select L4. Check
the picture, brightness, red, blue, clock,
phase, horizontal position, and vertical
position.

31

Off-timer performance
check

In the process mode and select OFF. Make
sure that the off-timer starts with “5”
(minutes), counts down each minute in 1
second, and turns off the set at “0”.

32

Thermistor performance
check

1. Heat the thermistor using a dryer.

Make sure the “TEMP” is displayed.

33

Automatic synchronisation

1. Receive the PHASE check pattern
signal.

Call the VGA/SVGA/XGA/SXGA mode and
make sure that the clock, phase, horizontal
and vertical positions can be automatically
adjusted.

34

Keystone correction
performance check

Make sure the keystone correction functions
well.

35

Factory settings

Make the following settings.

40

1. Setting the oscilloscope
Set the range to DC 1 V/div and 5µs/div.
2. Connecting the PC interface
1) Connect the PC interface to the projector. Make suret he CON2 (P8404), CON3 (P8502)
and CON4 (P8405) connectors are all tight in position.
2) Connect the cable between the computer’s ANALOG OUTPUT terminal and the DSUB
(INPUT1 on the projector) connector.
3) Set the projector’s input selector to the RGB1position.
4) Set the signal generator to the XGA mode (1024 x 768, 60Hz, 32-tone scale). Keep the
output amplitude at 700mVp-p.
5) Turn on the power.
3. Adjusting the levels and checking the tones
1) Press the SW5101 switch to call up the process mode.
2) Enter 8 for the SH-PHASE setting on the OUTPUT3 menu. (Adjust to get the on-screen
display characters clearand crisp.)
(A/D menu adjustment)
3) R-BRIGHT adjustment: Feed the black signal and adjust the R-BRIGHT setting on the A/D
menu screen until the bitless state.
4) G-BRIGHT adjustment: Feed the black signal and adjust the G-BRIGHT setting on the A/D
menu screen until the bitless state.
5) B-BRIGHT adjustment: Feed the black signal and adjust the B-BRIGHT setting on the A/D
menu screen until the bitless state.
6) R-D adjustment: Feed the white signal and adjust the R-D setting on the A/D menu screen
until the bitless state.
7) G-D adjustment: Feed the white signal and adjust the G-D setting on the A/D menu screen
until the bitless state.
8) B-D adjustment: Feed the white signal and adjust the B-D setting on the A/D menu screen
until the bitless state.
4. DTV adjustment
1) Feed the 480P Y signal to INPUT1. Keep the R (Pr) and B (Pb) without signal input.
2) G-BRIGHT adjustment: Make this setting the same as the G-BRIGHT setting on the A/D
menu screen.
3) CR-OFFSET adjustment: Feed the 56% white signal and adjust the CR-OFFSET setting
on the DTV menu screen until the bitless state.
4) CB-OFFSET adjustment: Feed the 56% white signal and adjust the CB-OFFSET setting on
the DTV menu screen until the bitless state.
5) G-BRIGHT correct adjustment = Adjust the value of G-BRIGHT up 6 point.
6) Press SW5101 and exit from the process mode.
Servicing precautions
If the convergence gets out of spec in servicing the set, call the process mode and select the
following group and subjects.
Group: NOKO
Subject: R-CNV-H, R-CNV-V
G-CNV-H, G-CNV-V
B-CNV-H, B-CNV-V
(H and V are for horizontal and vertical adjustments, respectively.)
Adjust the above settings to the range of 0 to 4.