Service manual

2 - 12
<In case pre-adjustment before aging is not carried out >
(1) Input timing No. 12 (106.25kHz/85Hz, 1600x1200) with the signal generator (R, G and B
OFF).
(2) Set each adjustment item to the following value.
BRIGHTNESS : 7F
(FACT3)
R-BS1(R-BIAS-H) : 00
G-BS1(G-BIAS-H) : 8A
B-BS1(B-BIAS-H) : 00
BTCEN (BRIGHT-CENT) : 5E0
BTMAX (BRIGHT-MAX) : 800
(3) Connect PWB-CRT TP (R200G lead wire) to the probe.
(4) Select BTCEN (BRIGHT-CENT) in FACT3, set the black level voltage of PWB-CRT TP
(R200G lead wire) to 70 +/- 0.5V with the oscilloscope (refer to the following picture).
* In use of the digital voltage meter, set it to 73 +/- 0.5V.
(5) Set the back raster luminance to 0.3 +/- 1cd/m
2
with FBT screen VR.
(6) Adjust the back raster color coordination to the value listed in the following table with R-
BS1 (R-BIAS-H) and B-BS1 (B-BIAS-H).
(7) Adjust the back raster luminance to 0.3 +/- 0.1cd/m
2
with BTCEN.
(8) If the back raster color coordination is deviated from the values listed in the following table,
repeat steps (6) and (7).
(9) Adjust the back raster luminance to 3.0 +/- 0.2cd/m
2
with BTMAX.
* The following table is applicable for the monitor without the back cover.
2.4.4.2 Adjusting BS2 (BIAS-M) / BS3 (BIAS-L)
(1) Set R-BS2 (R-BIAS-M), G-BS2 (G-BIAS-M) and B-BS2 (B-BIAS-M) to the value listed in the
following table.
(2) Set R-BS3 (R-BIAS-L), G-BS3 (G-BIAS-L) and B-BS3 (B-BIAS-L) to the value listed in the
following table.
As the values listed in the following table are the finite differences from the values of BS1
(BIAS-H), this adjustment should be carried out after adjustment of BS1 (BIAS-H).
(9300K)
Adjustment item
Color temperature
BS1 (BIAS-H)
Adjustment value of BS1 (BIAS-H)
0.283±0.015
0.297±0.015
Color coordination
x
y
(6500K)
Adjustment item
Color temperature
BS2 (BIAS-M)
Data
R-BS
G-BS
B-BS
+3
same value
-4
(5000K)
BS3 (BIAS-L)
+5
same value
-8
Adjustment data of BS2 (BIAS-M) / BS3 (BIAS-L)
(*The following data is the finite difference from BS 1 (BIAS-H).)
70±0.5V
G-K
GND