Power Supply
The power supply converts 100-120/200-240v AC to DC voltages. It has three functions :
Supplies stable DC to loads on the basis of the switching control
system
Protects loads and itself with an overvoltage/overcurrent
detection circuit
Automatically switches input voltages, controls AC on/off timing,
and displays error messages with a control circuit.
Power Supply LEDs
POWER ON (amber)
Lights when power is applied.
PWR ALM (red)
Power is cut off and this LED lights when one of the following alarm states is detected:
Overvoltage/overcurrent or low voltage on +5v power
Overvoltage/overcurrent or low voltage on -5.2v power
Overcurrent on +12v power
Overvoltage/overcurrent or low voltage on +24v power
DEVICE ALM (red)
When the drive fails, a fault signal is sent to the power supply to interrupt the power supply and turn this LED on. Before setting the POWER ON/OFF switch to ON after an alarm, set the LOCAL/REMOTE switch to LOCAL and the POWER ON/OFF switch to OFF.
Power-On Sequence
Turn on the POWER switch on the MTC. When the REMOTE/LOCAL switch on the MTU power supply is set to REMOTE, the power of the MTU is turned on automatically.
Messages on the MTC operator panel move as follows and finally no message is displayed.
VERIFY PROM CRC
ADDRESS : XXXXXXXX
IMPLING...
IMPL COMPLETE CU ONLINE
When the REMOTE/LOCAL switch on the MTU power supply is set to LOCAL, turn on the power to the MTU with the ON/OFF switch on the MTU power supply.
Just after power on, all LEDs on the MTU operator panel light for 2 seconds and "SELFTEST" message blinks for 6 seconds. After that " *N" or " * " is displayed. The MTU is now ready. "N" indicates the drive address.
Cleaning
For cleaning insert an approved cleaning cartridge and cleaning will be performed automatically. When cleaning is finished, the cleaning tape is rewound and ejected automatically. Cleaning takes about 60 seconds. Cleaning is required when the message *CLEAN is displayed on the operator panel. However, it recommended to clean in the following periods according to the number of processed cartridges in a day regardless of any cleaning message.
5 cartridges/day : once every 2 weeks
10 cartridges/day : once every week
50 cartridges/day : once every day
Tape Capacity
Storage capacity per tape can vary dramatically according to the formatted block size. Below is a comparative list of those block sizes :
Block Size Capacity Percentage
1K 54MB 25%
4K 126MB 59%
8K 163MB 76%
16K 191MB 89%
24K 202MB 95%
32K 208MB 97%
64K 213MB 100%