Error (143) 5 V / 24 V Supply Failure; Error (144) Temperature/Humidity Sensor Failure; Error (145) Density Sensor Failure - Lexmark Optra C Service Manual

Error (143) 5 V / 24 V Supply Failure

FRU
1 Power supply
unit (low
voltage)
DC controller
PCB

Error (144) Temperature/Humidity Sensor Failure

FRU
1 Temperature/
humidity
sensor unit
Mechanical
controller PCB
DC controller
PCB

Error (145) Density Sensor Failure

FRU
1 Density sensor
unit / cable
DC controller
PCB
2-26
Action
Check the connections on the DC controller PCB
connector J101 and power supply unit connector J4.
Replace and check as follows:
1. Power supply unit.
2. DC controller PCB see "DC Controller Board
Information" on page 2-2.
Action
Check the connections on the temperature/humidity
sensor unit connector J73, connector J15, and
mechanical controller PCB connector J2005.
Replace and check as follows:
1. Temperature/humidity sensor unit.
2. Mechanical controller PCB.
3. DC controller PCB, see "DC Controller Board
Information" on page 2-2.
Action
Check the connections on the density sensor unit
PCB connector J501 and DC controller PCB
connector J103.
Replace and check as follows:
1. Cable.
2. Density sensor unit.
3. DC controller PCB, see "DC Controller Board
Information" on page 2-2.