Daewoo DPN-4274NHS Service Manual - page 31
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SERVICE MODE
5-3. Description of SERVICE MODE Items
1) PW181-1 : Image processor control values. Mainly used to adjust White balance.
[Note] These values need to be adjusted only after replacing MAIN PCB. These values
may vary from set to set. Therefore if these values are recorded before replacing MAIN
PCB, you do not need to adjust WHITE BALANCE additionally.
(1) Sub Brt : For BRIGHTNESS adjustment (All inputs)
(2) Sub Cont : For CONTRAST adjustment (All inputs)
(3) Bias R : For R BRIGHTNESS adjustment (All inputs)
(4) Bias G : For G BRIGHTNESS adjustment (All inputs)
(5) Bias B : For B BRIGHTNESS adjustment (All inputs)
(6) Gain R : For R CONTRAST adjustment (All inputs)
(7) Gain G : For G CONTRAST adjustment (All inputs)
(8) Gain B : For B CONTRAST adjustment (All inputs)
2) PW181-2 : Additional PW181 control values
[Note] The following values do not need to be adjusted after replacing MAIN PCB.
Therefore you do not need to change initial values..
(1) DVI Brt : For BRIGHTNESS adjustment (DVI)
(2) DVI Cont : For CONTRAST adjustment (DVI)
(3) Sharp Filter : For SHARPNESS adjustment (Video, S-video)
3) VPC3230 : VIDEO DECODER control values. Used to adjust picture quality of VIDEO/S-
VIDEO inputs.
[Note] The following values do not need to be adjusted after replacing MAIN PCB.
Therefore you do not need to change initial values.
(1) Comm Brt : For BRIGHTNESS adjustment (Video, S-video, Caption)
(2) Comm Cont : For CONTRAST adjustment (Video, S-video, Caption)
(3) Comm Peak : For SHARPNESS adjustment (Video, S-video, Caption)
(4) CVBS Color : For COLOR adjustment (Video, S-video)
(5) CVBS Tint : For TINT adjustment (Video, S-video)
(6) Comp Brt : For BRIGHTNESS adjustment (Caption only)
(7) Comp Cont : For CONTRAST adjustment (Caption only)
(8) Comp Cb : For Color (Cb) adjustment (Caption only)
(9) Comp Cr : For Color (Cr) adjustment (Caption only)
(10) Comp Tint : For TINT adjustment (Caption only)
4) 9883_G : Graphic port A/D converter control values. Used to adjust picture quality of PC
input.
[Note] The following values do not need to be adjusted after replacing MAIN PCB.