Xerox Phaser 7750DXF, Service Manual

Page: 385 / 505

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) DA
TA
DRUM (K)
+3.3VDC CLOCK
DRUM (C)
+3.3VDC CLOCK
DC330[009-154] DRUM (K) DA
TA
1 1
1 2 3
DOUBLE
PLUG
J622
J153
11
0
9 8 7 6 5 4 3
2 3 4 5 6 7 8
J152
DRUM (K) DA
TA
SIGNAL
9.31B
3
DRUM (C) DA
TA
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 factor
y shipment.
Drum Cartridge installed at factor
y 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)