Tables - Xerox DocuMate 252 Service Manual

4.2.2 Tables

The tables in this section provide detailed troubleshooting information.
4.2.2.1 The Power LED does not go on
Cause
Unplugged from
outlet
AC power
unplugged at
unit
Power switch is
OFF
AC voltage
failure
Power unit AC
input connector
disconnected
Power switch
connector
disconnected
Power unit-main
PCBA connection
failure
Power unit
output voltage
failure
PCBA Failure
LED board-main
PCBA connection
failure
Relevant Unit Check Method
None Visual check
None Visual check
None Visual check
None AC outlet voltage
check
None Visual check
None Visual check
None Visual check
Power unit Output voltage
(+24V) check
Main control Tester check
PCBA (+24V, GND)
LED board
None Visual check
Table 4.3
4-9
Service Manual
Maintenance
Method
Insert the AC
plug into the
outlet.
Insert the AC
cable into unit.
Turn the power
switch on.
None
Connect the
connector.
Connect the
connector.
Connect the
connector.
Replace the
power unit
Remove the
cause or replace
the PCBA.
Connect the
connector