Xerox DocuColor 2240 Service Manual page 167

7-270 Tray 1 Paper Size Sensor Failure
An abnormal A/D value was detected by the Tray 1 Paper Size Sensor.
Initial Actions
• Check that the paper size setting is correct.
• Check the Tray 1 Paper Size Sensor
replace as required.
• Check the switch actuators on Tray 1
required
Procedure
Ensure Tray 1 is closed. The voltage measured at P/J536-B9 on the I/F PWB corresponds
to the paper size in Table 1.
Y N
There is +3.3 VDC from P/J115 pin 1 to
Y N
There is +3.3VDC from P/J536-B10 to P/J536-B8.
Y N
Go to the 3.3 VDC Wirenet
Go to Figure 1. Check the wires from J536 to J115.
Go to Figure 1. Check the wire from J536-B9 to J115-2.
Check the connection between the I/F PWB and the MCU PWB. If the check is OK, replace the
I/F PWB (PL 9.1). If the problem continues, replace the MCU PWB
Table 1 Tray 1 Size Sensor Values
S1
Paper Size [007-100]
No Tray OFF
A3 SEF OFF
11x17 SEF OFF
8.5x13 SEF OFF
B5 or 16K LEF OFF
B5 or 8x10 SEF OFF
8.5x11 SEF OFF
B4 or 8K SEF ON
A4 SEF ON
8.5x14 SEF ON
A4 LEF ON
8.5x11 LEF ON
A5 or 5.5x8.5 SEF ON
Status Indicator RAPs
7-270
(PL 2.1) for damage or incorrect mounting. Repair or
(PL 2.1) for wear or damage. Repair or replace as
P/J115 pin 3 on the Tray 1 Size Sensor.
(Figure 1) to troubleshoot the power circuit.
(PL 13.1).
S2 S3 S3 Voltage
[007-101] [007-102] [007-103] (J536-B9)
OFF OFF OFF
OFF OFF ON
OFF ON OFF
OFF ON ON
ON OFF ON
ON ON OFF
ON ON ON
OFF OFF ON
OFF ON OFF
OFF ON ON
ON OFF ON
ON ON OFF
ON ON ON
Figure 1 7-270 RAP Circuit Diagram - Tray 1 Size Sensing
3.18
2.96
2.75
2.55
2.12
1.92
1.71
1.32
1.24
0.92
0.51
0.32
0.12
09/03
2-134
Initial issue
DC 3535/2240/1632, WC M24