Xerox DocuColor 2240, Service Manual

Page: 219 / 1489

09/03
2-186
DC 3535/2240/1632, WC M24
9-351
Initial issue Status Indicator RAPs
9-351 Drive Logic
The IBT Edge Sensor detected that the IBT Belt is not tracking correctly.
Initial Actions
• Check the IBT Edge Sensor for damage. Ensure that the actuator is touching the edge of
the belt.
• Check the IBT steering drives for damage.
Procedure
Switch on the power. There is +1VDC to +3VDC from P/J533 -A11 to GND.
Y N
There is +5VDC measured between
P/J533 -A10 and P/J533-A9 on the I/F PWB.
Y N
Replace the MCU PWB ( PL 13.1 ).
There is +5VDC from P/J 533-A11 on the I/F PWB to GND.
Y
N
Go to Figure 2 . Check the connectors and wires. If the check is OK, replace the IBT
Edge Sensor ( PL 5.4 ). If the problem continues, replace the MCU PWB ( PL 13.1 ).
Replace the IBT Sensor ( PL 5.4 ).
Remove the IBT Assembly. Enter dC330 [004-001]. The IBT Steering Motor rotates.
Y N
There is +24 VDC from P/J550 on the I/F PWB to GND.
Y
N
Go to the +24 VDC Wirenets ( Figure 2 ) and troubleshoot the problem.
Check the wires ( Figure 1 ) from P/J550 on the I/F PWB to P/J207 on the IBT Steering
Motor for shorts, opens, or loose connections. If the wires are OK, replace the MCU PWB
(
PL 13.1 ). if the problem persists replace the I/F PWB ( PL 9.1 ), then the IBT Steering
Motor ( PL 1.3 ).
Check the installation of the Transfer Belt and the IBT Assembly ( PL 5.3 ). Repair or replace as
required. If the check is good, replace the MCU PWB ( PL 13.1 ).
Figure 1 9-351 Rap Circuit Diagram - IBT Steering Motor
Figure 2 9-351 Rap Circuit Diagram - IBT Edge Sensor
A
A
B
B