Xerox DocuColor 2240

09/03
2-235
DC 3535/2240/1632, WC M24
10-398
Status Indicator RAPs
Initial issue
10-398 Fan Lock
The machine logic detected a failure of the Fuser Fan, LVPS Fan or the Rear Fan.
Procedure
Enter dC330 [004-050]. Press Start. The Fuser Fan (PL 8.1) revolves at high speed.
YN
There is +24 VDC from P/J222 pin 1 to pin 4.
YN
There is +24 VDC from P/J407 pin A14 to pin A17.
YN
Replace the MCU PWB (PL 13.1)
Refer to Figure 1. Check the wires from J407 pins A14 and A17 to the Fuser Fan for
an open circuit.
There is +24 VDC from P/J407 pin A15 to pin A14.
YN
Replace the MCU PWB (PL 13.1)
Press Stop. There is +24 VDC from P/J407 pin A15 to pin A17.
YN
Refer to Figure 1. Check for an open circuit (greater than 30K ohms) from J407- A14
to J407-A15 (through the Fuser Fan). If the wires are OK, replace the Fuser Fan (PL
8.1).
Replace the Fuser Fan (PL 8.1). If the problem continues, replace the MCU PWB (PL
13.1).
The Rear Fan (PL 8.1) revolves at high speed.
YN
There is +24 VDC from P/J552 pin 1 to pin 4.
YN
Refer to Figure 2 (DC 2240/1632) or Figure 3 (DC 3535) Check the wires and con-
nectors for a short circuit. If the check is OK, replace the MCU PWB (PL 13.1). If the
problem continues replace the I/F PWB (PL 9.1).
There is +24 VDC from P/J552 pin 1 to pin 2.
YN
Replace the MCU PWB (PL 13.1).
Press Stop. There is +24 VDC from P/J552 pin 2 to pin 4.
YN
Refer to Figure 2 (DC 2240/1632) or Figure 3 (DC 3535) Check for an open circuit
(greater than 30K ohms) from J552-1 to J552-2 (through the Rear Fan). If the wires
are OK, replace the Rear Fan (PL 8.1).
Replace the Rear Fan (PL 8.1). If the problem continues, replace the MCU PWB (PL
13.1).
The LVPS Fan revolves at high speed (PL 9.1).
YN
The machine is a DC 3535.
YN
There is +24 VDC from P/J214 pin 1 to pin 4.
YN
There is +24 VDC from P/J406 pin B11 to pin B14.
YN
Replace the MCU PWB (PL 13.1)
Refer to Figure 4. Check the wires from J406 pins B11 and B14 to the LVPS
Fan for an open circuit.
There is +24 VDC from P/J406 pin B12 to pin B11.
YN
Replace the MCU PWB (PL 13.1)
Press Stop. There is +24 VDC from P/J406 pin B12 to pin B14.
YN
Refer to Figure 4. Check for an open circuit (greater than 30K ohms) from
J406- B12 to J406-B14 (through the LVPS Fan). If the wires are OK, replace
the LVPS Fan (PL 9.1).
Replace the LVPS Fan (PL 9.1). If the problem continues, replace the MCU PWB
(PL 13.1).
There is +24 VDC from P/J214 pin 1 to pin 4.
YN
There is +24 VDC from P/J406 pin B10 to pin B13.
YN
Replace the MCU PWB (PL 13.1)
Refer to Figure 5. Check the wires from J406 pins B10 and B13 to the LVPS Fan for
an open circuit.
There is +24 VDC from P/J406 pin B11 to pin B10.
YN
Replace the MCU PWB (PL 13.1)
Press Stop. There is +24 VDC from P/J406 pin B11 to pin B13.
YN
Refer to Figure 5. Check for an open circuit (greater than 30K ohms) from J406- B11
to J406-B13 (through the LVPS Fan). If the wires are OK, replace the LVPS Fan (PL
9.1).
Replace the LVPS Fan (PL 9.1). If the problem continues, replace the MCU PWB (PL
13.1).
With dC330 [004-050] entered, stack dC330 [004-200] and press Start. The display is L.
YN
Check the wires and connectors. If the check is OK, replace the MCU PWB (PL 13.1).
The Fans are operating correctly. If the problem continues replace the MCU PWB (PL 13.1).