Lexmark T640 - Page 66

2-24 Service Manual
4061-xx0
927 .02 Cartridge fan stalled. • Loose connector.
• External blockage of the fan,
preventing it from turning.
• Bad fan.
Go to “Cartridge fan service
check” on page 2-76.
927 .03 Main fan took too long to
ramp up.
• Loose connector.
• External blockage of the fan,
preventing it from turning.
• Bad fan.
Go to “Main fan” on
page 2-76.
927 .04 Main fan underspeed or
stalled during speed
adjustment state.
• Corrupted feedback signal.
• Fan input voltage may be too low.
Go to “Main fan” on
page 2-76.
927 .05 Main fan overspeed
during speed
adjustment state.
• Corrupted feedback signal.
• Fan input voltage may be too low.
Go to “Main fan” on
page 2-76.
927 .06 Main fan capture data is
invalid and speed
control is at maximum in
fan control idle state.
Corrupted or non-existent feedback
signal.
Go to “Main fan” on
page 2-76.
927 .07 Main fan capture data is
invalid and speed
control is at maximum in
fan control adjustment
state.
Corrupted feedback signal. Go to “Main fan” on
page 2-76.
929 .00 Toner sensor error—a
problem has been
detected with the toner
sensor.
• Check the toner sensor
• Check cable
• Check system board
Go to “Toner sensor service
check” on page 2-127.
929 .66 An error has been
detected. No home
windows has been
detected.
• Check toner cartridge.
• Check toner sensor
Go to “Toner sensor service
check” on page 2-127.
929 .67 No toner sensor
transition.
• Check toner sensor
• Check toner cartridge
Go to “Toner sensor service
check” on page 2-127.
930 .00 An incorrect printhead
has been detected
Check the printhead Go to “Printhead service
check” on page 2-122.
932 .00 Printhead lost HSYNC. • Check printhead
• Check cables and connections
• Check system board
Go to “Printhead service
check” on page 2-122.
933 .00 Mirror motor locked, no
first HSYNC received.
• Check printhead
• Check cables and connectors
• Check system board.
Go to “Printhead service
check” on page 2-122.
934 .00 Mirror motor lost lock • Check printhead
• Check cables and connections
• Check system board
Go to “Printhead service
check” on page 2-122.
Service error codes (9xx.xx) (continued)
Error
code
Sub
codes
Display text Description Action