Toshiba P503DL - Manual (Page 35)

35
Overall block diagram
Note: When color balance adjustment is necessary, this is a small hint to perform.
1. Use internal test signal so that flat field is displayed to all the displays.
2. Offset/Gain cannot be performed since these adjustments are located before the test signal generator
section.
3. Supply low signal level about 10 or 20% amplitude and adjust “CUTOFF” of each displays and obtain
the same white balance.
4. Supply high level signal about 70-80-90% whichever suite to the occasion.
Adjust “DRIVE” so that all the displays have the same white balance.
5. Repeat Cutoff/Drive adjustments several times since each adjustments affect each other.
6. When a magnification/picture-insertion signal processor is used, connect each output wire to each
display.
7. Adjust “OFFSET/GAIN” so that all the colors/white balances are the same. This is to compensate
the difference of output signal level of each input, do not touch or readjust Cutoff/Drive, these
adjustments are done in previous stage.
8. When RGB signal distribution amplifier/buffer is used and each signals are connected to each
displays, follow the same way to adjust the Cutoff and Drive by one signal source and compensate by
Offset/Gain for each signal level differences.
Note: DVI signal Link output
is converted to XGA/60 signal
Note:
1. RS232C is connected to PW166B Scaler
2. Lamp ballast is using reduced flicker ignition system, use specified lamp listed in the parts list