Check - Lexmark C734 Service Manual

920.10—POST (power-on self test)—Three toner sensors not connected error service

check

Step Questions / actions
1 Remove the left cover. See
removal" on page
level sensor cables connected to the rear of
the HVPS.
Are any of the cables damaged?
2
Disconnect one of the toner level sensors and
POR the printer.
Does the 920.10 error occur again?
"Left cover
4-21. Check all the toner
Yes
If only one or two of the
toner level sensor are
damaged:
• Disconnect the
sensor(s).
• Go to step 6.
If three toner level sensors
are damaged, replace the
damaged sensors. See
"Toner level sensor
removal" on page 4-146.
• Then this sensor is one
of the three bad
sensors'
• Continue disconnecting
the toner level sensors
until three sensors are
disconnected and the
920.10 error occurs.
• Replace the toner level
sensors that are
disconnected. See
"Toner level sensor
removal" on
page 4-146.
5026
No
Go to step 2.
Repeat this step for the
other toner level sensors
until the 920.10.
2-99
Diagnostic information