PCM-18 Positioning Servo Controller
Came to our shop with the Fault "won't control"
Troubleshooting the unit exposed a damaged backup battery. The battery is used to hold the programming in the EEPROMS. Without the battery, the programs were dumped. The EEPOMS were also suspected to have sustained some damage.
Replaced the battery and both Odd and Even EEPROMs. Had to pull the programs which are saved in the the Archived file and burn the original programs in the new EEPROM Ic's. After that it was ready to be returned to the customer.
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