10-61
Drum Life Control
DRUM (K)
PL4.1
CRUM
4
3
2
2
1
3
DRUM (C)
PL4.1
CRUM
4
3
2
2
1
MCU PWB
PL13.1
+3.3VDC
+3.3VDC
+3.3VDC
DC COM
DC COM
DC COM
DC COM
DC COM
DC COM
A8
A7
A6
A5
A4
A3
A2
A1
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
YEL
VIO
YEL
YEL
YEL
VIO
J405
P622
DC330[009-035]
DRUM (K) POWER
ON (H) +3.3VDC
DC330[009-035]
DRUM (C) POWER
ON (H) +3.3VDC
DC330[009-153]
DRUM (C) DATA
DRUM (K)
+3.3VDC CLOCK
DRUM (C)
+3.3VDC CLOCK
DC330[009-154]
DRUM (K) DATA
1
1
1
2
3
DOUBLE
PLUG
J622
J153
110
9
8
7
6
5
4
3
2
3
4
5
6
7
8
J152
DRUM (K) DATA
SIGNAL
9.31B
3
DRUM (C) DATA
SIGNAL
9.31B
NOTE:
DC330 [009-153] & [009-154]: Drum Detect
With Drum installed properly, high is displayed. However, no proper
display appears for Drum Cartridge installed at factory shipment.
Drum Cartridge installed at factory shipment has no Crum. The life of the
drum cartridge is controlled based on data in M/C NVM.
Virtual Line
7750-294
9.4 DRUM LIFE CONTROL (C,K)
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