Diagnostic Information; Troubleshooting Overview; Performing The Initial Troubleshooting Check - Lexmark T652 Service Manual

Diagnostic information

•
"Troubleshooting overview" on page 35
•
"Fixing print quality issues" on page 37
•
"Paper jams" on page 55
•
"Understanding the printer messages" on page 158
•
"User attendance messages" on page 180
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"Printer hardware errors" on page 194
CAUTION—SHOCK HAZARD: Remove the power cord from the electrical outlet before you connect or
disconnect any cable or electronic card or assembly for personal safety and to prevent damage to the
printer. Disconnect any connections between the printer and PCs/peripherals.
CAUTION—SHOCK HAZARD: If the printer is kept on, never touch the conductive parts if not
specifically required. The power switch and inlet of the low voltage power supply card (LVPS card)
assembly is live even while the power supply is cut off. Never touch the live parts.
CAUTION—POTENTIAL INJURY: The printer weight is greater than 18 kg (40 lb) and requires two or
more trained personnel to lift it safely. Use the hand holds on the side of the printer. Make sure your
fingers are not under the printer when you lift or set the printer on the floor or another stable surface.
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.
Warning—Potential Damage: When operating the driving units using the diagnostics or other tools, be sure
to keep them covered unless otherwise specified.
Warning—Potential Damage: When operating the driving units using the diagnostics or other tools, never
touch the driving units. When operating the driving units using diagnostics or other tools, be sure to follow
the procedures in this manual.
Warning—Potential Damage: Servicers should wear a wrist band or the like to remove static electricity from
their body, grounding their body while working. Go to
Note: There may be printer error messages that are not contained in this service manual. Call your next level
support for assistance.

Troubleshooting overview

•
"Performing the initial troubleshooting check" on page 35
•
"Power‑on Reset (POR) sequence" on page 36
•
"Using Safe Mode" on page 36

Performing the initial troubleshooting check

Before you start the troubleshooting procedures, perform the following checks:
•
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.
"Handling ESD‑sensitive parts" on page
Diagnostic information
35
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263.