Toshiba P600DL service manual Electric Circuit Explanation

Page 32

ELECTRIC CIRCUIT EXPLANATION

2. DMD Driver PCB

The processed digital signal is sent from the RGB/Control PCB to the DMD Driver PCB via the 96-pin digital signal cable. The TI driver IC controls to signal supplied to the DMD through frame memory buffers.

3.Power Supply PCB

The power supply consists of two sections, Power Factor Control and DC-DC conversion. Incoming AC is rectified and supplied to the PFC converter where the resulting power factor is 1.

The output of the PFC circuit is 370V DC and this is supplied to the main and standby DC-DC converters and also the Lamp Ballast.

The outputs of the main DC-DC converter are +12V and +4V, the outputs of the standby DC-DC converter are +12V and +5V.

Over-voltage protection is triggered when the +4V supply rises above +6.3V. SCR201 is controlled by ZD201 and this triggers the protection circuit.

Short circuit protection of the +12V and +4V lines is monitored by IC101 pin3 and the +12V and +5V standby lines are monitored by IC104 pin5

4.Lamp Ballast PCB

The Philips® 120W UHP lamp is driven by Philips ballast power supply, input voltage is 370V DC and high voltage trigger and lamp supplies are output.

5.RS232C Control PCB

RS232C control signals and remote control from optional CT90000 are accepted, if both are connected CT90000 has priority.

6.Video PCB

Accepts PAL/NTSC composite video signal and has a buffered output for loop-through.

31

Page 31 Page 33
Image 32
Page 31 Page 33
Contents P600DL Safety Precaution Contents Safety Precautions for User For use of the equipment For servicing, maintenance and inspection Safety Precautions for User Precautions for USE and Maintenance Request to UserGeneral Descriptions Features Dimensions Function of I/O Panel BNCON/OFF Function of Power PanelPower Switch and Power Indicator Specifications Acceptable Signal Type Acceptable RGB Input Signal Timing Horizontal Timing Vertical TimingUnit-4Unit-3 Connection AT a Multi Projection SystemDisassembly HOW to Replace the LampDiassembly Power Supply Module Ballast Module Control Module ．LOCATION of KEY Components and Function ModuleExploded View of the Projection Block 96pin connector ．EXPLODED View of the Screen Block and Cabinet ．WIRING Adjustment ．ENGINE Mount Adjustment Adjustment Adjustment Adjustment Colour , Tint Multiple Screen Wall system example Electronic Circuit Explanation Electric Circuit Explanation Power FAN Lamp Power onStanby FAN StopAppendix-2 Cont VN2 ID.CLR DMD Driver Board Debug Page Debugging Flow Diagram DMD Driver BoardBad image- Horizontal bands or lines Image shifted to left Parts List Location No Description 94800807 Ballast Module Assy 100W
Top Page Image Contents