Disconnects On The Controller Card - Lexmark 7003-050 X340n Service Manual

7003-XXX

Disconnects on the controller card

Always print a page from each paper source following a repair action. The following table is an aid to find a
problem with a cable connection.
Error or message
if cable is
unplugged
No backlight and
no text on the
operator panel
No backlight, no
text on operator
panel
917
924.01
929
931
935
936
940
Front Cover
Open Pls close
cover
Load MP Feeder
Paper Empty
Pls add paper
31.05 Missing
or invalid
print
cartridge
Unlock Scanner
Scanner Lock
2-18
Service Manual
Condition Check
required to connectio
obtain error n at:
POST. No power J7
delivered to
controller card
POST J5
POST J19
POST J15
Print multiple J18
pages
POST J12
POST J11
POST J9
POST J13
POST J13
Pick paper from J101
MPF
Pick paper from J101
tray 1
POST J14
POST J4
Connector name and description
HVPS-LVPS (low voltage power supply)
OP-PANEL (operator panel)
Go to "Dead machine service check" on
page 2-22.
FAN
TH1 (thermistor)
MPF SENSOR (multipurpose feeder sensor and
toner sensor)
LSU (laser printhead)
MMTR (mirror motor)
MAIN MOTOR (transport motor)
LVPS (low voltage power supply control)
CO (cover open switch)
SOL (multipurpose feeder solenoid)
SOL (paperfeed solenoid)
SC (smart chip)
CCD