Diagnostics And Troubleshooting; Troubleshooting Overview; Performing The Initial Troubleshooting Check; Power-On Reset (Por) Sequence - Lexmark MS310 4514-220 Service Manual

Diagnostics and troubleshooting

CAUTION—SHOCK HAZARD: For personal safety and to prevent damage to the printer, remove the
power cord from the electrical outlet before you connect or disconnect any cable, electronic board or
assembly.
CAUTION—HOT SURFACE: The inside of the printer might be hot. To reduce the risk of injury from a hot
component, allow the surface to cool before touching it.

Troubleshooting overview

Performing the initial troubleshooting check

Before you start the troubleshooting procedures, perform the following checks:
•
Use genuine Lexmark supplies and parts for the best results. Third-party supplies or parts may affect the
performance, reliability, or life of the printer and its imaging components.
•
With the power cord unplugged from the electrical outlet, check that the cord is free from the breakage,
short circuits, disconnected wires, or incorrect connections.
•
Make sure the printer is properly grounded. Check the power cord ground terminal.
•
Make sure the power supply line voltage is within 10% of the rated line voltage.
•
Make sure the machine is securely installed on a level surface in a well‑ventilated area.
•
Make sure the room temperature is between 16 and 32°C (60 and 90°F) and that the relative humidity is
between 8 and 80%.
•
Avoid sites generating ammonia gas, high temperature, high humidity (near water faucets, kettles,
humidifiers), cold spaces, near open flames, and dusty areas.
•
Avoid sites exposed to direct sunlight.
•
Make sure the paper is the recommended paper for this printer.
•
Make a trial print with paper from a newly opened package, and check the result.
Power‑on reset (POR) sequence
The printer performs a POR sequence when turned on. Check for the correct sequence by observing the
following precess:
1
flashes until the device is ready.
2
The cooling fan turns on.
3
The fuser heater turns on.
Note: The fuser takes longer to warm up from a cold start than a warm start.
Diagnostics and troubleshooting
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