Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

2. HARDWARE B–62755EN/012.8HOW TO REPLACETHE BATTERIESWARNING1 Memory backup battery replacementWhen replacing the memory backup batteries, keep thepower to the machine (CNC) switched on, and hold themachine at an emergency stop. Because this work must becarried out while the power is kept switched on and thecabinet is open, only the personnel who have been trainedfor safety are allowed to engage in the work. Whenreplacing the batteries, be careful not to touch thehigh–voltage circuit section (marked and shielded witha shock hazard prevention cover). If you touch thehigh–voltage circuit section when it is uncovered, you willget an electric shock.2 Absolute pulse coder battery replacementWhen replacing the memory backup batteries, keep thepower to the machine (CNC) switched on, and hold themachine at an emergency stop. Because this work must becarried out while the power is kept switched on and thecabinet is open, only the personnel who have been trainedfor safety are allowed to engage in the work. Whenreplacing the batteries, be careful not to touch thehigh–voltage circuit section (marked and shielded witha shock hazard prevention cover). If you touch thehigh–voltage circuit section when it is uncovered, you willget an electric shock.168