Muratec MFX-2550 Field Engineering Manual page 267

No. Symptom
21 Unit will not 1. Is the power cord connected correct
power up.
2. Is the electrical outlet is on?
3. Does the DC output voltages from the
4. Is the connection between the power
5. If you replace the main board, the
What to confirm
and power switch is turned on.
power supply unit to connector P3 on
the main control boar have the follow-
ing output?
Pin 7, 9 +3.3 V
Pin 15, 17 +5.0 V
Pin 2, 4, 6 +12.0V
Pin 12, 14 +24.0V
P i n 1 , 3 , 5 , GND
8, 10, 11, 13,
19, 21, 23
supply unit and the main control board
OK?
symptom will be fixed.
Yes Check No.2.
Connect the power cord and turn the
No
power on.
Yes Check No.3.
No Connect the machine to a proper
outlet.
Yes Check No.4.
Replace the power supply.
No
Yes Check No.5.
No Reconnect the connection or replace
the harness.
Yes Replace the main control board.
No Replace the machine.
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Countermeasure