Service manual

Page 26 of 64
5、White-Balance Adjustment
5-1 Equipments list
Chroma7100 1set
VG828 video signal generator 1set
Chroma-2326 1set
5-2 Preparation and Adjustment process
1、Preparation:
z Connect correctly the ports that one is HDTV of PDP and the other is VG-828.
z Connect correctly the ports that one is D-SUB of PDP and the other is VG-828.
z Connect correctly the ports that one is AV of PDP and the other is VG-828.
z Turn on the power both of the PDP and VG-828
z Cover the camera lens of Chroma-7100, then press the “0-CAL” button, when the display of chroma-7100 flicker, move
the covering from the camera lens.
2、Adjustment process
z HDTV（YPBPR）adjustment
Switch PDP input source to HDTV mode, to be sure temperature is set standard, brightness is set 50 and contrast is set 50，
and we’ll correct it if situation in fact don’t meet the request.
1). High brightness adjustment：VG-828 is set TIM954&PAT936（the value of full white is 0.7255），measure the temperature
of the currently picture by Chroma7100,then compare the value measured and the standard value, if over the specification,
then press the button MTS,9,5,1,and display on the Remote control ,and in the factory mode ,adjust the high brightness, so
that make the value meet specification.
①. Enter into factory mode by the remote control, and the menu is shown as below:
Remark: Adjust of D-SUB、HDTV signal source： choose “ADC LINER” and adjust separately RGB ‘s
BRIGHTNESS and CONTRAST.
②. Adjust the value of R Contrast、B Contrast, so that meet the temperature specification.
③. The value of G Contrast keep fixed in adjustment period.
Version
Note this data