Ready And Power Led Does Not Light On - Lexmark OptraImage 443 Service Manual

3.1.1.10 3.1.1.10 3.1.1.10 3.1.1.10

Ready and Power LED does not light on

Ready and Power LED does not light on Ready and Power LED does not light on Ready and Power LED does not light on
Cause Cause
Cause Cause
ADF control board-
main control PCBA
connection failure
ADF control board-
main control PCBA
cable failure
Home position sensor
board failure
Power supply-main
control board
connection failure
Power supply fails
= See section 1.4.3 Wiring configuration
= Refer to section 4.6
Lexmark Internal Use Only
Relevant Unit Relevant Unit Check Method Check Method
Relevant Unit Relevant Unit Check Method Check Method
None Visual check
Sensor board-main Tester or visual
control PCBA cable check
Sensor board Tester check
None Visual check
Power supply Tester check (+5V,
+24V, GND)
Table 3.6 Table 3.6 Table 3.6 Table 3.6
3-10
Maintenance Method Maintenance Method Remark Remark
Maintenance Method Maintenance Method Remark Remark
Check connector and None
the cable between
the ADF control
board and main PCBA
board.
Check ADF control
board.
Check PCBA main None
board.
Connect the None
connector.
Replace the power None
supply.