U0-1 Main Motor Stop Error; U1-1 Main Motor Rotation Error - Xerox WorkCentre 5020 Service Documentation

U0-1 Main Motor Stop Error

BSD-Reference: CH4.1 (Figure 1)
Explanation
The motor runs for over 120 seconds without any paper being fed.
Procedure
The problem can be solved according to RAP U1- 1 Main Motor Rotation Error (U1-1).
Y N
Execute diagnostics [29-49] (How to Enter the Diagnostic Mode) to check the ROM ver-
sion. The ROM is the latest version.
Y N
Upgrade the ROM to the latest version.
Replace the IOT Motor (PL 1.1) (REP 1.1.1) and the AIOC PWB (PL 8.1) (REP 8.1.1) in
that order.
Completed
Initial Issue
WorkCentre 5020

U1-1 Main Motor Rotation Error

BSD-Reference: CH4.1 (Figure 1)
Explanation
500 ms after the IOT Motor starts, the IOT Motor Lock signal is Low.
Procedure
Close the Left Hand Cover and the Front Cover. Execute diagnostics [04--01 Main Motor On].
(How to Enter the Diagnostic Mode) The IOT Motor can be heard rotating.
Y N
Check P/J504 and P/J201. Both P/J504 and P/J201 are connected securely.
Y N
Connect P/J504 and P/J201 securely.
Measure the voltage between LVPS PWB P504-1 ( P/J504) (+) and GND (-). The
age is approximately +24VDC.
Y N
Replace the LVPS (PL 8.1) (REP 8.1.2).
Check the wire between J504-3 ( P/J504) and J201-3
shorted or open.
Y N
Repair the wire.
Replace the IOT Motor (PL 1.1) (REP 1.1.1) and the AIOC PWB (PL 8.1) (REP 8.1.1) in
that order.
Check the installation of the IOT Motor (PL 1.1 ) (REP 1.1.1). The IOT Motor is installed
properly.
Y N
Install the IOT Motor (PL 1.1 ) (REP 1.1.1) properly.
Turn the rotor of the IOT Motor (PL 1.1 ) counterclockwise by hand. It
without any abnormal load.
Y N
Check for any foreign substances that obstruct the drive and for any incorrectly installed
parts. There are foreign substances or incorrectly installed parts.
Y N
Replace the IOT Motor (PL 1.1) (REP 1.1.1).
Remove any foreign substances and fix any installation errors.
Check the wire between J504-3 ( P/J504) and J201-3 ( P/J201).
or open.
Y N
Repair the wire.
Replace the IOT Motor (PL 1.1) (REP 1.1.1) and the AIOC PWB (PL 8.1) (REP 8.1.1) in that
order.
July, 2007
2-25
volt-
( P/J201). The wire is not
rotates smoothly,
The wire is not shorted
Status Indicator RAPS
U0-1, U1-1