Toshiba TLP541E Service Manual page 15

Adjust Items Input Signal
5. Gamma correction at
video input
5-1. Video bias 10-stairstep
adjustment waveform
5-2. Video black 10-stairstep
gamma adjustment waveform
5-3. Ghost adjustment Retma signal
6. Common voltage
adjustment
6-1. Common voltage Adjustment
adjustment 1
6-2. Common voltage Adjustment
adjustment 2
Table 1-4-2
Test
Equip- Test Point
ment
Oscillo- TP402 (R)
scope TP502 (G)
TP602 (B)
Oscillo- TP402 (R)
scope TP502 (G)
TP602 (B)
–––– ––––
Oscillo- ––––
signal scope,
confirm
on the
screen.
Oscillo- ––––
signal scope,
confirm
on the
screen.
Adjust
Adjust Value
mode
W03 • Adjust the 10th
W04 stairstep wave-
W05 form for following
values:
5.3 ± 20 mV
W0C • Adjust the second
W0D stairstep wave-
W0E form for following
values:
2.75 ± 20 mV
(W1A) • If ghost is high,
adjust in W1A
mode.
WM4 • Select "Standard"
WM5 in Projection
WM6 mode on "Setting"
menu.
• Adjust so that the
flicker for each R,
G, B signal
becomes
minimum.
WM4 • Invert Up/Down
WM5 contents
WM6 displayed on the
screen.
• Select "Rear
Ceiling" in
Projection mode
on "Setting"
menu.
• Adjust so that the
flicker for each R,
G, B signal
becomes
minimum.
• After adjustment,
click the standard
button (PJ0) on
the setting screen
and return to the
standard status.
1-13
Note
10th stairstep
• Trigger the scope at TP901
(H period).
Second stair step
• Trigger the scope at TP901
(H period).