Canon CXDI-50C Service Manual page 28

5.1.2 Connecting to the Power Box
(1) Removing the cover
Remove the 5 screws from the back of the power box and the 2 screws on each side at the
bottom of the power box.
(2) Check the jumper pin settings on the PWB-40XRAY board in the power box. The power
supplies for 7m and 3m are not compatible due to having different output voltages. This
short pin is for determining the power, not for changing the voltage.
With changing the jumper pin settings, the signal sent to PLD (IC1) of the PWB-40XRAY
board has either state High or Low. By using this state, the PBIF50XRAY PLD code which
written in the PLD can distinguish whether the power supply is for 3m or 7m.
The Imaging unit determines the cable length based on the dip switch setting (SW1-7:
OFF) on the PWB-50Di board. If cable connector P4 #1-#2 is open, cable length is 7m. If
#1-#2 is connected, cable length is 3m.
2. Installation Manual
50 power unit setting
50 Power（7m）: Short between JP1 6-8p
50 power（3m）: Short between JP1 7-8p
This setting is done when shipping
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Also remove screws on the
far side