Sanyo LCD-24XAZ10F, Service Manual

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4 Adjustment instruction
4.1 Unit adjustment
4.1.1 According to wiring diagram ‘9242KC4201JL’ , ‘9222KC4201JL’, ‘9219KC7201JL’ ,
‘9224KC7001J’ or ‘9232KC7001JL’, connect main board, power board, key board and IR board
correctly, switch on power supply, check if display is normal?
4.1.2
Instruction of factory menu
a
）
First press key ‘Program source’, then press number keys “
2
、
5
、
8
、
0
” in turn to enter initial
factory menu;
b
）
Press keys “ ” and “ ” to move cursor to each adjustment page of initial factory menu, then
press “ ” to enter into its adjustment menu;
c
）
Press keys “ ” and “ ” to move cursor upwards or downwards within any adjustment page;
d
）
Press keys “ ” and “ ” to adjust any item when cursor is moved onto it;
e
）
Press key “Menu” to exit to initial menu from any adjustment page;
f
）
Press key “Exit” to exit from factory menu in any case;
g
）
Set item “Aging Mode” as “On” to enter into factory aging mode.
4.2 White balance adjustment
4.2.1 Before adjustment
The unit should be working for above 30 minutes to be in stabler state; Use apparatus CA210 to
adjust white balance;
For model of which dimension is bigger than 26”, only 9300K color temperature (that is “normal”)
is needed adjustment, To guarantee BBY test requirements to be met when color temperature are
12000K and 6500K, make sure that chromaticity coordinates of bright scale are (X=285±5, Y=293±8)
and chromaticity coordinates of dark scale are (X=285±8, Y=293±12);
For model of which dimension is 26” or smaller than 26”, only 8000K color temperature (that is
“normal”) is needed adjustment, To guarantee test requirements to be met when color temperature
are 9300K and 6500K, make sure that chromaticity coordinates of bright scale are X=295±5,
Y=305±8) and chromaticity coordinates of dark scale are (X=295±8, Y=305±12);
4.2.2 White balance adjustment of HDMI channel
Input 16-grey-scale signal with format of 800×600/60 Hz (VG848: Timing is 854
，
PAT is 921),
enter into submenu “color temperature adjustment” of factory menu;
For model of which dimension is bigger than 26”, select “normal” color temperature (that is
9300K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3
rd
scale as
（
285±8, 293±12
）
and guarantee luminance within the range of 3 nit to 5 nit; fix item “G
GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3
rd
scale as
（
285±8, 293±12
）
; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until
chromaticity coordinates of both scales are all
（
285, 293
）
;
For model of which dimension is 26” and small than 26”, select “normal” color temperature (that is
8000K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3
rd
scale as
（
295±8, 305±12
）
and guarantee luminance within the range of 3 nit to 5 nit; fix item “G
GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3
rd
scale as
（
295±5, 305±8
）
; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until
chromaticity coordinates of both scales are all
（
295, 305
）
;
Set item “ALL COLOR” as “ON” after completing adjustment.