Exception Error - Xerox DocuColor 2240 Service Manual

116-324 Exception Error

CPU exceptional error.
Procedure
Switch power off then on. The problem continues.
Y N
Return to Service Call Procedures.
Replace the ESS PWB (PL 13.1).
Initial issue
DC 3535/2240/1632
116-325 ESS Fan
ESS Fan failure is detected or +24 VDC is failed.
Procedure
• Remove Rear Cover (REP 14.2).
• Remove cover from +24V LVPS
• Disconnect P502 on +24V LVPS
Check that power is switched off. Measure resistance of fuse on +24V LVPS. Resistance is 1
ohm or less.
Y N
Replace +24V LVPS (PL 9.1).
Switch on the power. Measure the AC voltage between the white and black wires in
the +24 VDC. Line Voltage AC is measured.
Y N
Go to the OF 1-4 RAP.
Connect the black meter lead to ground (-). Measure DC voltage at
(Figure 1). Voltages are measured as shown
Y N
There is a problem with the +24 VDC enable circuit. Go to
Ensure P/J502 is still disconnected on the +24V LVPS. Measure the DC voltage at
the +24V LVPS (Figure 1). Voltages are measured as shown.
Y N
Replace the 24V LVPS (PL 9.1).
Connect P/J502 on the +24V LVPS. Measure the DC voltage at
(Figure 1). Voltages are measured as shown.
Y N
There is a short circuit in +24 VDC distribution. Refer to Section 7 wirenets for +24 VDC
distribution.Disconnect the connectors in the distribution network. Switch the power on.
Connect the connectors while monitoring +24 VDC. The +24 VDC supply will shut down
when the P/J with the shorted circuit is connected.
Replace the ESS Fan (PL 13.1).
If the problem continues, replace the ESS PWB
+24 VDC RET
Vio (all on top)
+24 VDC
Orn (all)
Figure 1 P502, P505 on +24V LVPS
02/03
2-463
(PL 9.1).
(Figure 1).
P/J505 on the +24V LVPS
(Figure 1).
OF 1-3.
P/J502 on the +24V LVPS
(PL 13.1).
+24V, 0V, +3.3V, +5V
Status Indicator RAPs
116-324, 116-325
P/J2 on
P/J502 on