Xerox DocuColor 1632 Service Manual

6/02
2-52
DC1632/2240
4-345, 4-346
Prelaunch Training/Review
Status Indicator RAPs
4-345 MCU HVPS Communication
Communication error between MCU PWB and HVPS Control PWB
Procedure
BSD: CH3.1B CH3.6A
Between MCU PWB j406-B1(+) and GND(-). +5 VDC is measured.
YN
Between MCU PWB j406-B1(+) and GND(-). +3.3 VDC is measured.
YN
Check frame short between MCU PWB j406-B1 and HVPS Control PWB j574-9. If
the check is good, replace MCU PWB (PL 13.1).
Check for wire breakage and bad connection between MCU PWB j406-B1and HVPS
Control PWB j574-9.
Turn the power OFF. Measure resistance of following.
Between HVPS CONTROL PWB j574-7 and MCU PWB j406-B3
Between HVPS CONTROL PWB j574-6 and MCU PWB j406-B4. 10 ohms or less is mea-
sured.
YN
Repair wire breakage and bad connection.
10 ohms or less is measured between HVPS Control PWB j574-8 and MCU PWB j406-B2.
YN
Repair wire breakage and bad connection.
Replace MCU PWB (PL 13.1). If this does not solve the problem, replace HVPS Control PWB
(PL 9.1).
4-346 IBT Home Sensor
IBT Home Sensor does not detect Belt Home signal.
Procedure
BSD: CH9.19 CH9.31A
If the IBT was just serviced, verify the installation is correct (REP 9.15).
If any Developer Housings were just serviced, verify installation is correct (REP 9.9).
If a Finisher status code occurred just before the 4-346 in fault history, go to the RAP for the
Finisher status code.
Check the Belt Home Marker. A Belt Home Marker is present.
YN
Replace IBT Belt (PL 5.3).
Block Belt Home Sensor with paper. Enter dC330 [004-100] and press Start. Display indi-
cates Hi.
YN
Between I/F PWB j533-A13(+) and GND(-). +5 VDC is measured.
YN
Between I/F PWB j533-A9(+) j533-A12(-). +5 VDC is measured.
YN
Replace MCU PWB (PL 13.1).
Check for wire breakage and bad connection between IBT Home Sensor j121 and I/
F PWB j533. If the check is good, replace IBT Home Sensor (PL 5.4).
Replace MCU PWB (PL 13.1).
If the problem continues, replace I/F PWB (PL 9.1).
Reinstall IBT Assembly (REP 9.15). Enter dC330 [004-002] and press Start. IBT Motor ener-
gizes.
YN
Between I/F PWB j551-3(+) and GND(-). +24 VDC is measured.
YN
By following Ch7 Wire Network, check +24VDC circuit up to I/F PWB j551-3
Between IBT MOTOR j208-3(+) and GND(-). +24 VDC is measured.
YN
Check wire breakage and bad connection between IBT MOTOR j208-3 and I/FPWB
j551-3.
Check wire breakage and bad connection between IBT MOTOR j208 and I/FPWB j551.
There are broken wires or bad connections.
YN
Replace IBT MOTOR (PL 1.1).
Repair broken wire and bad connection.
Replace MCU PWB (PL 13.1).
If the problem continues, replace I/FPWB (PL 9.1).

Xerox DocuColor 1632 Specifications

General

Brand	Xerox
Model	DocuColor 1632
Category	Printer
Language	English