Duplo DP-S Series, Service Manual

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89
m
Drum Section
chap.2
2. "NO INK" Display Timing
When HIGH (5V) is output by detecting ink while the drum continues to rotate 20 times (the number of
rotations varies depending on the printing speed.*) during printing, it is detected that the ink pack is empty,
"NO INK" is displayed on the error display, and printing stops. At the same time the power for the ink pump
motor is turned off.
*The drum rotates until "NO INK" is displayed after HIGH is output from the ink detection PCB unit during
printing. The number of drum rotations varies depending on the printing speed as follows:-
Drive PCB unit Output CN6-24
Drum stop/JAM detect position sensor
JAM detect position
Drum stop position
R8S02G13
+24V
2
"NO INK" Display Timing