Checking The Fan - Samsung OfficeServ 7400 Technical Manual

OfficeServ 7400
TECHNICAL MANUAL
5) Check the LEDs of the MP40 and LP40 boards.
6) The RUN LED of the MP40 board lights green and the SM LED flashes when the
system normally starts the booting process.
7) Once the booting is complete, the RUN LED of the MP40 board flashes green, and
the SM LED stops flashing and remains lit.
8) The RUN LED of the LP40 board flashes when the power supply and processor
status of the expansion rack is normal.
If the Smart Media is not detected
If the system cannot detect the smart media, the SM LED of the MP40 board
might not light or flash. In such cases, turn off the power of the main cabinet,
replace the smart media and turn the power on again. If the smart media is still
not detected, turn off the power of the main cabinet and eject the MP40 board.
9) Check if the LED status of other interface boards are normal.
10) If the LED status of the MP40, LP40's, or interface board is abnormal, turn off the
power of the cabinet and turn the power on again.

8.3 CHECKING THE FAN

When the system fan is not operating, the 48 DC power and the system operation will
be turned off to prevent system overheating.
This function is set in programming to send notification within 24 hours.
The function can be set using the following methods:
1) Designate SYSALM key in MMC 732 and the designated key will be set on the
manager's digital phone.
2) When the alarm is generated in the phone, the cause of alarm can be checked in
MMC 851.
The MJA08 message means abnormal fan operation, therefore the system will be
turned off after 24 hours.
When the alarm occurs, the fan must be replaced within 24 hours.
REMINDER
Install blocking plates in all empty card slots of the main and expansion
cabinets.
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8.2
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INSTALLATION
PART 8 JUNE 2006