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TOSHIBA
60
Protection Item Memory error (EERR)
Internal overheat
(OH)
DC circuit
overvoltage (DCOV)
DC circuit overcurrent
(DCOC)
LCD Message
MAIN EEPROM ERROR OVERHEAT; INTERNAL DC OVERVOLTAGE DC OVERCURRENT
Cause
Control board chip error Fan failure; high ambient Chopper malfunction Inverter / chopper fault
Operation Mode
after Fault
Start is inhibited Bypass operation; chopper and inverter are stopped
Audible Alarm
Yes; continuous buzzer
Visible Alarm
RED fault lamp “ON”
Relay Contact
Alarm
Fault relay closed; bypass relay closed
Auto-Retransfer
NO
7.0 Authorized Factory Service
7.1 Start-up
The startup of the UPS equipment is broken up in several steps. These steps are as follows:
1. Initial Condition: This is where the service technician checks the unit for physical damage
and verifies the installation of the UPS (electrically).
2. Static Checks: This step verifies the proper settings within the UPS logic.
3. Wiring Check: The wiring to (power cables) and from (control wires) the battery cabinet.
4. Main Voltage Check: The input voltages are checked to verify they are within the range.
5. Energizing the UPS: This step begins the internal self-checks within the processor logic.
6. Output Voltage Check: The output voltages are checked to verify they are within range.
7. EPO (Emergency Power Off): The EPO is operated to verify its operation in case of an
emergency.
8. Load Testing: Performed if load is available.
9. Generator Testing: Performed if Generator is available.
10. Internal Maintenance Bypass: This verifies the operation of the Maintenance Bypass.
7.2 Preventive Maintenance
Toshiba's 4200FA Uninterruptible Power Systems have been designed to provide years of
trouble-free operation requiring a minimum of preventive maintenance.
The best preventive measure that the UPS user can take is to keep the area around the unit,
particularly the air inlet vents, clean and free of moisture and dust accumulations. If the
atmosphere of the installation site is very dusty, use a vacuum cleaner to periodically remove
dust accumulations from the system. Schedule authorized Toshiba service centers to perform
internal parts inspections annually.
CAUTION
Before performing any maintenance the technician should be familiar
with and follow the important safety instructions within this manual.
WARNING
Proper maintenance of the battery system of this unit by a qualified service
technician is essential to the safety and reliability of your UPS system. Refer
to service manual.