Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-73
6.3.17 Drive Assembly failure Continued
4. MAIN MOTOR ANALYSIS
Unplug the AC power cord from the back of the printer.
Is there continuity (0
ΩΩ
) between J14–1 and J14–3 on the MCU PWB?
Is there continuity (0
ΩΩ
between J14–1 and J14–5 on the MCU PWB?
Is there continuity (0
ΩΩ
) between J14–2 and J14–4 on the MCU PWB?
Is there continuity (0
ΩΩ
) between J14–2 and J14–6 on the MCU PWB?
Yes No
Go to Step 5. Replace the Drive Assembly.
5. Install a new MCU PWB.
Is the problem still present?
Yes No
Replace the Drive Assembly. Problem Solved.
6. OPTIONAL FEEDER ASSEMBLY ANALYSIS
Disconnect P/J111 from the HVPS.
Remove the Optional Feeder Assembly.
Hand rotate (counter-clockwise) the Drive Assembly transmission gear located directly above the
motor. (NEVER rotate the transmission gear clockwise).
Does the gear on the Main Motor shaft rotate counterclockwise?
Yes No
Go to Step 7. Replace the Optional Feeder Assembly.
7. FEEDER ASSEMBLY ANALYSIS
Disconnect P/J111 from the HVPS.
Remove the Feeder Assembly.
Hand rotate (counter-clockwise) the Drive Assembly transmission gear located
directly above the motor. (NEVER rotate the transmission gear clockwise.)
Does the gear on the Main Motor shaft rotate counterclockwise?
Yes No
Go to Step 8. Replace the Feeder Assembly.