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 SD/Smart Media/MMC+ is not detected
If the system cannot detect the media card, 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 media card 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 is normal.
10) If the LED status of the MP40, LP40s, 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 48V 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.
Home Page Home Page
8.2
Table of Contents Table of Contents
INSTALLATION
PART 8 MAY 2010