Xerox WorkCentre Pro 423 - Page 166

WorkCentre Pro 423/428 2-134 CHAPTER 2 TROUBLESHOOTING
03/02 Level 2 Troubleshooting
OPTION LVPS +12VDC POWER FIP (BSD 19.1)
Is the voltage +12 VDC between the OPTION MOTHER PWB
J320-5(+) and GND(-)?
YN
Is the voltage +12 VDC between the OPTION LVPS J507-
5(+) and GND(-)?
YN
Is +12 VDC WIRE normal (no short circuit with the
FRAME)?
YN
Repair the short circuit.
Is the voltage 100 VAC between the OPTION LVPS
J3C-4(+) and J3C-3(-)?
YN
Is the voltage 100 VAC between the
OPTIONJ11-1(+) and J11-2(-)?
YN
Is the voltage 100 VAC between the
POWER UNIT J1-2(+) and J1-5(-)?
YN
Replace the POWER UNIT. (PL7.1)
Check between the POWER UNIT and
OPTION relay connector for an open wire
or poor contact.
Check between the OPTION relay connector
and OPTION LVPS for an open wire or poor
contact.
Replace the OPTION LVPS. (PL9.5)
Check between the OPTION LVPS and MF MAIN PWB for
an open wire or poor contact.
Check between the OPTION MOTHER PWB and the
corresponding part for an open wire or poor contact.
OPTION LVPS +5VDC POWER FIP (BSD 19.1)
Is the voltage +5 VDC between the OPTION MOTHER PWB
J320-1(+) and GND(-)?
YN
Is the voltage +5 VDC between the OPTION LVPS J507-
1(+) and GND(-)?
YN
Is +5 DC WIRE normal (no short circuit with the
FRAME)?
YN
Repair the short circuit.
Is the voltage 100 VAC between the OPTION LVPS
J3C-4(+) and J3C-3(-)?
YN
Is the voltage 100 VAC between the OPTION
relay connector J11-1(+) and J11-2(-)?
YN
Is the voltage 100 VAC between the
POWER UNIT J1-2(+) and J1-5(-)?
YN
Replace the POWER UNIT. (PL7.1)
Check between the POWER UNIT and
OPTION relay connector for an open wire
or poor contact.
Check between the OPTION relay connector
and OPTION LVPS for an open wire or poor
contact.
Replace the OPTION LVPS. (PL9.5)
Check between the OPTION LVPS and MF MAIN PWB for
an open wire or poor contact.
Check between the OPTION MOTHER PWB and the
corresponding part for an open wire or poor contact.
OPTION LVPS –12VDC POWER FIP (BSD 19.1)
Is the voltage -12 VDC between the OPTION MOTHER PWB
J320-6(+) and GND(-)?
YN
Is the voltage -12 VDC between the OPTION LVPS J507-
6(+) and GND(-)?
YN
Is -12 VDC WIRE normal (no short circuit with the
FRAME)?
YN
Repair the short circuit.
Is the voltage 100 VAC between the OPTION LVPS
J3C-4(+) and J3C-3(-)?
YN
Is the voltage 100 VAC between the
OPTIONRelay connector J11-1(+) and J11-2(-)?
YN
Is the voltage 100 VAC between the
POWER UNIT J1-2(+) and J1-5(-)?
YN
Replace the POWER UNIT. (PL7.1)
Check between the POWER UNIT and
OPTION relay connector for an open wire
or poor contact.
Check between the OPTION relay connector
and OPTION LVPS for an open wire or poor
contact.
Replace the OPTION LVPS. (PL9.5)
Check between the OPTION LVPS and MF MAIN PWB for
an open wire or poor contact.
Check between the OPTION MOTHER PWB and the
corresponding part for an open wire or poor contact.