Lexmark C734dn Service Manual

2-102 Service Manual
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920.10—POST—Three toner sensors not connected error service check
920.11—POST (power-on self test)—Two toner sensors not connected error service
check
Step Questions / actions Yes No
1 Remove the left cover. See “Left cover
removal” on page 4-21. Check all the toner
level sensor cables connected to the rear of
the HVPS.
Are any of the cables damaged?
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 4-160.
Go to step 2.
2
Reconnect the HVPS cable. Disconnect one
of the toner level sensors and POR the
printer.
Does the 920.10 error occur again?
• 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 4-160.
Repeat this step for the
other toner level sensors
until the 920.10.
Step Questions / actions Yes No
1 Remove the left cover. See “Left cover
removal” on page 4-21. Check all the toner
level sensor cables connected to the rear of
the HVPS.
Are any of the cables damaged?
If only one of the toner level
sensor is damaged:
• Disconnect the sensor.
• Go to step 6.’
If two toner level sensors
are damaged, replace the
damaged sensors. See
“Toner level sensor
removal” on page 4-160.
Go to step 2.

Lexmark C734dn Specifications

General

Brand	Lexmark
Model	C734dn
Category	Printer
Language	English