Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-191
Tray 1 Error: Size Unknown
When the paper length in Slow Scan direction is measured on the paper feed path, the detected size is
different from the size detected by the Tray.
Applicable Fault Code
• 024-910: Size Mismatch Tray 1: Measured Length Mismatch
Initial Actions
• Check the paper path for debris.
• Power cycle the printer.
• If the problem persists, perform the following procedure
.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• Paper Size Switch, PL 2.1.6
• MCU PWB, PL 12.1.15
• Main Harness Assembly, PL 12.3.1
• Paper Transport on page 7-51
Troubleshooting Procedure
Step Actions and Questions Yes No
1. Check the installation of the Tray.
Is the Tray installed properly?
Go to step 2. Install the Tray.
2. Check the paper Guide.
Is the paper Guide in the Tray set correctly?
Go to step 3. Set the paper Guide.
3. Check the Paper Size Switch operation.
Perform DC330 Component Control on
page 2-26 to check the On/ Off operation of
each Switch of the Paper Size Switch.
• Switch 0 [071-106]
• Switch 1 [071-107]
• Switch 2 [071-108]
• Switch 3 [071-109]
Are the Switches working properly?
Replace the MCU PWB
(REP 12.4 MCU PWB
on page 4-206).
Go to step 4.
4. Check the connection between the Paper Size
Switch and MCU PWB.
Are the connectors P/J4653A and P/J465A
connected securely?
Go to step 5. Connect the
connectors P/J4653A
and P/J465A.