Lexmark MB790MFP Service Manual page 144

Error
code or Error contents
message
990.53 HCIT tray lift motor
ramp error
990.54 HCIT tray lift motor
lost encoder failure
Description/Action
The HCIT tray lift motor does
not reach the specified speed
at the specified time.
The HCIT tray lift motor is not
reporting pulses back to the
engine.
Possible repair actions
1. Check for obstruction in the
HCIT tray lift area.
2. Check the connections on
the HCIT tray lift motor
assembly for proper
connection.
3. Replace the HCIT tray lift
drive motor assembly if
problem remains. Go to "High
capacity input tray (HCIT)
tray lift drive motor assembly
removal" on page 4-167.
1. Check for obstruction in the
HCIT tray lift area.
2. Check the connections on
the HCIT tray lift motor
assembly for proper
connection.
3. Replace the HCIT tray lift
drive motor assembly if
problem remains. Go to "High
capacity input tray (HCIT)
tray lift drive motor assembly
removal" on page 4-167.
2-107
Diagnostic information
7462
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