Xerox WorkCentre Pro 423 Service Manual page 153

E5-1 IOT Interlock Open (BSD 1.7A)
Open the R/H COVER and cheat the R/H INTERLOCK SW.
Does the error display disappear?
Y N
Is the voltage +24VDC between the MCU/SW PWB
J406-A15(+) and GND(-)?
Y N
Is the voltage +24VDC between the MCU/SW PWB
J406-A16(+) and GND(-)?
Y N
Is the voltage +24VDC between the MCU/SW
PWB J458-6(+) and GND(-)?
Y N
Is the voltage +24VDC between the
MCU/SW PWB J400-1(+) and GND(-)?
Y N
Perform +24VDC FIP.
Replace the MCU/SW PWB. (PL7.2)
Is the voltage +24VDC between the MCU/SW
PWB J458-5(+) and GND(-)?
Y N
Is the voltage +24VDC between the R/H
INTERLOCK SW FS234(+) and GND(-)?
Y N
Check betwee the R/H INTERLOCK
SW FS234 and MCU/SWPWB J458-6
for an open wire or poor contact.
Is the voltage +24VDC between the R/H
INTERLOCK SW FS233(+) and GND(-) ?
Y N
Replace the R/H INTERLOCK SW.
(PL2.3)
Check between the MCU/SW PWB J458-5
and R/H INTERLOCK SW FS233 for an
open wire or poor contact.
Replace the MCU/SW PWB. (PL7.2)
Check between the MCU/SW PWB J406-A16
and J406-A15 for an open wire or poor contact.
Replace the MCU/SW PWB. (PL7.2)
Check the R/H COVER actuator for damage or misalignment.
WorkCentre Pro 423/428
E5-2 IOT Interlock Open (BSD 1.7A)
Open the FRONT COVER and cheat the FRONT INTERLOCK
SW.
Does the error display disappear?
Y N
Is the voltage 0VDC between the MCU/SW PWB J458-1(+)
and GND(-)?
Y N
Is the voltage 0VDC between the MCU/SW PWB
J458-2(+) and GND(-)?
Y N
Replace the MCU/SW PWB. (PL7.2)
Is the voltage 0 VDC between the FRONT
INTERLOCK SW J621-4(+) and GND(-)?
Y N
Check between the FRONT INTERLOCK SW
J621-4 and MCU/SW PWB J458-2 for an open
wire or poor contact.
Is the voltage 0 VDC between the FRONT
INTERLOCK SW J621-3(+) and GND(-)?
Y N
Replace the FRONT INTERLOCK SW. (PL2.3)
Check between the MCU/SW PWB J458-1 and
FRONT INTERLOCK SW J621-3 for an open wire
or poor contact.
Replace the MCU/SW PWB. (PL7.2)
Check the FRONT COVER actuator
misalignment.
03/02
2-121
E6-1 CABINET Interlock Open (BSD 1.7B)
Open the CABINET R/H COVER and press the CABINET
INTERLOCK SW by hand or with a screwdriver.
Does the error display disappear?
Y N
Close the R/H COVER. Is the voltage 0 VDC between the
MCU/SW PWB J417-A14 (+) and GND(-)?
Y N
Is the voltage 0 VDC between the CABINET DRIVE
PWB J480-A1 (+) and GND(-)?
Y N
Is the voltage 0 VDC between the CABINET
DRIVE PWB J483-A11(+) and GND(-)?
Y
for damage or
Replace the CABINET DRIVE PWB. (PL9.1)
Check between the CABINET DRIVE PWB J480-A1
and MCU/SW PWB J417-A14 for an open wire or
poor contact.
Replace the MCU/SW PWB. (PL7.2)
Check the CABINET R/H COVER actuator for damage or
misalignment.
CHAPTER 2 TROUBLESHOOTING
N
Is the voltage 0 VDC between CABINET
DRIVE PWB J483-A10(+) and GND(-)?
Y N
Replace the CABINET DRIVE PWB.
(PL9.1)
Is the voltage 0 VDC between the
CABINET INTERLOCK SW J111-2(+)
and GND(-)?
Y N
Check between the CABINET
INTERLOCK SW J111-2 and
CABINET DRIVE PWB J483-A10 for
an open wire or poor contact.
Is the voltage 0 VDC between the Cabi-
net Interlock SW J111-1(+) and GND(-)?
Y N
Replace the CABINET INTERLOCK
SW. (PL9.10)
Check between the CABINET Interlock SW
J111-1 and CABINET Drive PWB J483-
A11 for an open wire and poor contact.
Level 2 Troubleshooting