Lexmark T650 Service Manual - Page 121

4062 Error code or message 916.01 920.00 920.01 920.02 Error contents Internal duplex drive motor over speed failure Fuser under temperature Fuser type = 1 Fuser warm-up failure Fuser type = 1 Fuser warm-up failure Fuser type = 1 Description/Action The duplex drive motor does not rotate at the specified speed. Fuser does not maintain proper operating temperature within steady state control. The fuser hot roll took too long to heat up after transitioning to new enhanced mode within standby control only. The fuser hot roll fell to far below desired temperature while in standby control. Possible repair actions 1. Check all the connections on the duplex drive motor assembly. 2. Check all the connections on the system card assembly. 3. Replace the duplex drive motor assembly if problem remains. Go to "Duplex drive motor assembly removal (T652, T654)" on page 4-19. 1. Turn the machine off/on and ensure the fuser unit assembly is properly installed. 2. Ensure the proper voltage fuser is installed in the machine. 3. Replace the fuser unit assembly if problem remains. Go to "Fuser unit assembly removal (T650, T652, T654)" on page 4-23. 1. Turn the machine off/on and ensure the fuser unit assembly is properly installed. 2. Ensure the proper voltage fuser is installed in the machine. 3. Replace the fuser unit assembly if problem remains. Go to "Fuser unit assembly removal (T650, T652, T654)" on page 4-23. 1. Turn the machine off/on and ensure the fuser unit assembly is properly installed. 2. Ensure the proper voltage fuser is installed in the machine. 3. Replace the fuser unit assembly if problem remains. Go to "Fuser unit assembly removal (T650, T652, T654)" on page 4-23. Diagnostic information 2-87