Setting The G2 Adjustments - Sony 1270Q CRT Setup And Operation Manual

2.5

Setting the G2 Adjustments

I've taken these notes from 2 threads b/w Eric van Ballegoie and Chuck
Williams. With this set up properly my picture got a lot better. It' amazing
how black the blacks can be with the screen still being bright. Sure makes
DLP's look funny ;-)
Keep in mind that your grey scale will be messed up after you do this so
continue knowing that it'll have to be reset. This is impossible to do
accurately yourself and expensive to get done professionally.
NOTE: This is slightly different on other 12xx series PJ's
1. Set brightness and contrast
Brightness: 50
Contrast: 80
2. Disable the AKB (Auto Cathode Bias)
On the CF2 board there is a connector with only 2 pins
Short these pins
3. Call up the pluge pattern (-5 IRE, 0 IRE and +5 IRE)
4. Set the Bias and Gain to factory defaults if possible
Press the right and left arrow at the same time
Else, set Bias to 140 and Gain to 180
Adjust the bias to make the +5 IRE barely visible in each color
5. Enable AKB
6. Reset Gain and Bias controls for proper grey scale. (such a short
sentence to describe such a major procedure J)
Note: be sure to turn the status display off while making these
adjustments.