Sharp PG-M20S Serviceanleitung Seite 23

No. Adjustment Items
13 Automatic adjust-
ment of video
white balance
14 Automatic adjust-
ment of DTV white
balance
15 Adjustment of
DLP voltage (For
reference)
16 Confirmation and
re-adjustment of
white balance
17 Confirmation of
color-related
operation
18 Confirmation of
picture-related
operation
19 Confirmation of
RGB
20 Confirmation of
off-timer operation
21 Confirmation of
thermistor opera-
tion
Adjustment Conditions
1. Feed the 50% gray pattern signal
(NTSC, burst signal).
2. Select the following group and sub-
ject.
Group: DLP
Subjects: V-R1-GAIN (Red)
V-B1-GAIN (Blue)
1. Feed the 50% gray pattern signal
(480I, color difference signal).
2. Select the following group and sub-
ject.
Group: DLP
Subjects: C-R1-GAIN
C-B1-GAIN
1. Read voltage rank of DLP descrip-
tion.
2. Set the switch corresponding to the
rank which has been read. (on the
formatter PWB)
1. The adjusting conditions for each
item are as follows:
For RGB input, see Item 11
For SRGB input, see Item 13
For video input, see Item 14
For DVT input, see Item 12
1. Receive the color bar signal.
1. Receive monoscope pattern signal.
1. Receive the RGB signal.
1. Heat the thermistor by dryer.
Adjustment Procedures
1. Adjust V-R1-GAIN and V-B1-GAIN so
that x-value should be 265±3 and y-
value should be 298±3.
1. Adjust C-R1-GAIN and C-B1-GAIN
so that x-value should be 263±3 and
y-value should be 295±3.
1. Carry out adjustment when DLP chip
has been replaced or combination of
chip and formatter has been changed.
2. Rank:
Setting value: 1 2 3 4
Confirm that there is no deviation in white
balance from that of the monitoring
equipment.
For readjustment, proceed in the order
of RGB input, video input and DTV in-
put.
1. Select L1 in the process mode.
Check the performance of color and
tint.
1. Select L2 in the process mode.
Check Picture, Brightness and Sharp-
ness.
1. Select L4 on the process mode.
Check Picture, Brightness, Red, Blue,
Clock, Phase, H-POS and V-POS.
1. Select OFF in the process mode.
Confirm that the off-timer starts with
5-minute display, counts 1 minute for
1 second, and turns off when 0 minute
is displayed.
1. Confirm that the temperature is dis-
played.
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PG-M20S
PG-M20X
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