Xerox DocuColor 2240, Service Manual

Page: 682 / 1489

09/03
2-649
DC 3535/2240/1632, WC M24
116-324, 116-325
Status Indicator RAPs Initial issue
116-324 Exception Error
CPU exceptional error.
Initial Actions
Switch power off then on. If the problem persists, continue with the procedure.
Procedure
Perform GP 3 . If the problem continues, reload system software. If the problem persists,
replace the ESS PWB ( PL 13.1 ).
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 ( PL 9.1 ).
• Disconnect P502 on +24V LVPS ( Figure 1 ).
Check that power is switched off. Measure resistance of fuse on +24V LVPS. Resistance is 1
ohm or less.
Y
N
R24V LVPS ( PL 9.1 ).
Switch on the power. Measure the AC voltage between the white and black wires in P/J2 on
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 P/J505 on the +24V LVPS
( Figure 1 ). Voltages are measured as shown ( Figure 1 ).
Y N
There is a problem with the +24 VDC enable circuit. Go to OF 1-3 .
Ensure P/J502 is still disconnected on the +24V LVPS. Measure the DC voltage at P/J502 on
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 P/J502 on the +24V LVPS
( 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 moni24 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 ( PL 13.1 ).
Figure 1 P502, P505 on +24V LVPS
+24V, 0V, +3.3V, +5V
+24 VDC RET
Vio (all on top)
+24 VDC
Orn (all)