10-75
Image Transfer to Paper (cont’d)
9.25
9.28
2
3
9.23
4.1
8.7
REGISTRATED
PAPER
TRANSFERRED
IMAGE (Y+M+C+K)
TO OBT
2ND BTR
DRIVE
MCU PWB
PL13.1
DC COM
J406
B7
I/F PWB
PL9.1
J553
DC COM
+24VDC
INTLK
+24VDC INTLK
+24VDC INTLK
4
3
2
1
2ND BTR SELECT
TRANSFER (L) +5VDC
CLEAN (H) +5VDC
BLU
1
DC COM
DC COM
VIO
ORN
ORN
VIO
P/J570
15,16,17
18
8
7
6
10
11
12
13
J501
DC COM
+24VDC
INTLK
ANALOG GND
+5VDC REF
2ND BTR CLEAN
VOLTAGE MONITOR
2ND BTR
CLEAN REMOTE
2ND BTR TRANSFER
VOLTAGE MONITOR
DC140 [009-204]
2ND BTR TRANSFER
CURRENT MONITOR
DC140 [009-052]
2ND BTR
TRANSFER REMOTE
P/J571
HVPS T5
PL9.1
2ND BTR
POWER
CONTROL
10
11
HVPS CONTROL PWB
PL9.1
J574
BLU
3
+5VDC
2ND BTR
POWER
ZONE
C3
UNFUSED COPY
CONTAMINATED
IBT
2nd BTR Bias switching
For the image area on IBT, 2nd BTR is charged with Transfer Bias
(negative) so that toner on IBT will be transferred to paper. (Transfer)
For the non-image area on IBT, 2nd BTR is charged with Reverse
Bias (positive) so that toner will be prevented from attaching to the
roll. (Clean)
HVPS Control PWB performs 2nd BTR on/off control and remote control
by conducting serial communications with MCU PWB.
For the wiring from MCU PWB to HVPS Control PWB, see CH3.1B
Turning on DC140 [009-052] allows Transfer Bias to be output.
1
NOTE:
2
3
7750-316
9.24B IMAGE TRANSFER TO PAPER (2 OF 2)
2ND BTR POWER
ZONE
J2
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