Toshiba P503DL service manual Overall block diagram

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Overall block diagram

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

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.

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Contents P503DL Connection AT a MULTI-PROJECTION SYSTEM··················16 Safety Precaution Safety Precautions for User Equipment Use For servicing, maintenance and inspection Safety Precautions for User Precautions for USE and Maintenance General Descriptions Features Dimensions Function of I/O Panel Power Switch and Power Indicator Function of Power PanelSpecifications Acceptable Signal Type Horizontal Timing Acceptable RGB Input Signal TimingSEGA6 Connection AT a Multi Projection SystemScreen Lock screws Page Disassemble HOW to Replace the LampCabinet Disassemble AIR FilterControl Module Location of KEY Components and Function ModuleWiring Between Function Blocks Light Engine Block DLP Engine adjustmentEngine Mount Adjustment Adjustment Electronics Adjustment or Setting Input Signal selection Adjustment parameters This is the general idea of adjustments Multiple Screen Wall system example Magnification Electronic Circuit Explanation Appendix-1 P503DL control board LED statusFAN NG Overall block diagram RS-232C pin-connection configuration Appendix-2 Control via RS-232C Command Protocol listCS4 VN5 Write Appendix-3 When lamp does not lightWhen color becomes strange When picture is strange and totally distortedWhen color wheel motor needs to replace CABINET, P503DL Cabinet K Parts List
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