Toshiba P600DL service manual 3Verify HSYNCZ,VSYNCZ,ACTDATA, SYNCVALIDHI Active control signal

(3)Verify HSYNCZ,VSYNCZ,ACTDATA, SYNCVALID(HI Active) control signal

4.Verify U74A PIN1 Running at 120HZ. If no color wheel spinning, check U71 data transfer on the following line MTRDATA,MTRCLK,MTRSELZ.

5.Verify motor spinning line from micro-controller U71 (PIN51) to FPGA(U76 PIN 126) is Hi.

6.Verify hardware LAMPEN (U76 PIN168) is Hi (3.3v).

7.Check LAMPLIT is Hi.

8.If everything else verified, but still no image, perform the following check

(1)Check DMD voltage at output of generation circuits, but also out of U88 (DMDSR16) IC (be careful not to probe on pins r the device could be damaged) VBIAS(22-25V), VRESET(-26V), VCC2(7.5V).

(2)Check voltage enable form FPGA are active as appropriate. If not, output Driver may be blown from previous probing.

(3)Be sure two reset lines are not tied together or the device will be damaged.

(4)Verify I2C communication by reading system status and micro-controller version.

9.Be sure front end electronics are sending one pixel per clock.

10.Elastomer and DMD are aligned properly to pads.

11.Check data transfer on the following lines: PBCLKZ, PBDAT0, PBDAT1.

12.If Color wheel has difficulty in starting or is unstable, the capacitors may need to be adjusted to match the motor parameter.

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