Mitsubishi Electric SD420U Service Manual page 18

DMD BIAS VOLTAGE ADJUSTMENT
Procedure:
1. Check the bias voltage setting code printed on the DMD chip to be mounted on the DMD
PCB ASSY.
2. Change the setting of the DIP switch on the DMD PCB ASSY according to the last letter (B to E)
of the code.
∗
Instruction for setting the DIP switch according to the last letter of the code is indicated on the
DMD PCB ASSY.
J1
1
3
DMD bias Bin settings
BINSEL1
0
0
1
1
Fig.1. DMD bias voltage setting code
2
BINSEL0 2/A5
4 2/A5
BINSEL1
BINSEL0 DMD BIN
0 B
1 C
0 D
1 E
Fig.2. Position and setting of DIP switch.
Bias voltage
setting code
DIP switch
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