Symptom Tables; Base Printer Symptoms; High-Capacity Feeder (2000-Sheet) Symptoms - Lexmark T640 Service Manual

Symptom tables

Base printer symptoms

Symptom
Dead machine
Operator panel—one or more buttons do
not work.
Operator panel—none of the buttons work.
Operator panel—display is blank. Printer
sounds 5 beeps.
Operator panel—display is blank.
Operator panel continuously displays all
diamonds and does not complete POST.
Paper feed problems—base printer or
integrated 500-sheet paper tray
Paper jams at exit of redrive assembly—
duplex option not installed.
Paper jams at exit of redrive assembly—
duplex option installed.
Fuser solenoid fails to operate.
Print quality—black page
Print quality—blank page
Print quality—light print
Print quality—background
Print quality—residual image
Print quality—skew
Print quality—banding
Print quality—random marks
Print quality—toner on backside of printed
page.
Print quality—vertical black bands on edge
of copy.
Unable to clear a 32-Unsupported Print
Cartridge user error message.

High-capacity feeder (2000-sheet) symptoms

Symptom
The printer does not recognize the high-
capacity feeder installed.
Paper feed problem with the high-capacity
feeder.
Action
Go to "Dead machine service check" on page
Go to "One or more operator panel buttons fail" on
page 2-106.
Go to "No buttons work" on page
Go to "Operator panel display" on page
Go to "Operator panel display" on page 2-107
Go to "Operator panel service check" on page
Go to "Paper feed service check" on page
Go to "Paper feed service check" on page
Go to "Duplex option service check" on page
Go to "Fuser solenoid service check" on page
Go to "Print quality—all black page" on page
Go to "Print quality—blank page" on page
Go to "Print quality—light print" on page
Go to "Print quality—background" on page
Go to "Print quality—residual image" on page
Go to "Paper feed service check" on page
Go to "Print quality—banding" on page
Go to "Print quality—random marks" on page
Go to "Print quality—toner on backside of printed page" on
page 2-121.
Go to "Print quality—black bands on outer edges of the
page" on page 2-120.
Go to "Signature button assembly service check" on
page 2-122.
Action
Go to "High-capacity feeder input tray service check" on
page 2-95.
Go to "High-capacity feeder input tray service check" on
page 2-95.
4061-xx0
2-80.
2-106.
2-107.
2-106.
2-112.
2-112.
2-82.
2-94.
2-116.
2-117.
2-121.
2-118.
2-120.
2-112.
2-119.
2-117.
2-5
Diagnostic information