Toshiba 40WH08B, Service Manual

Page: 16 / 98

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GENERAL ADJUSTMENTS
Item Name Setting Input signal Measuring point Adjusting method Adjustment standard
Screen
adjustment
Focus
adjustment
RDRV
BDRV
RCUT
BCUT
Vert. Center
voltage
adjustment
Screen
Focus
Bright part W/B
Dark part W/B
Center voltage
Factory- screen-
adjustment mode
Dynamic mode
Cinema mode
Dynamic mode
Wide mode
Retoma signal
Crosshatch signal
(PAL-I)
Phillips pattern
(PAL-I)
CRT screen
Screen adjustment
Screen adjustment
Screen adjustment
Between TP-V and
TP-G
y
Make the surrounding as dark as
possible.
x
Enter factory-screen-adjustment mode.
(Y mute, DRV.CUT. = 40 H)
c
Directly observe the CRT screen, and
adjust the screen VR to the point where
it begins to emit light.
v
Use R, G, and B tubes respectively to
perform above-mentioned adjustments.
y
Make adjustments to achieve the best
possible position by repeating electrical
and optical focusing.
x
Use jigs to protect the CRTs, except the
axis under adjustment, from any light.
c
Use R, G, ad B tubes respectively to
perform above-mentioned adjustments.
y
Adjust the color temperature of the
bright part (103cd/m
2 ).
y
Adjust the color temperature of the dark
part (17cd/m
2 ).
y
Connect a voltmeter and adjust the high
voltage to +30
±
10mV.
Point where it
begins to emit light.
For details, refer to
the focus adjust-
ment method
8750k–0.002uv
8750k–0.002uv
+30
±
10mV