Operating instructions

Maintenance and service
12.4 Removing and installing hardware components
SIMATIC Panel PC 677B
Operating Instructions, 05/2007, A5E01035609-01
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Warning
Risk of explosion and release of harmful substances!
For this reason, do not burn lithium batteries, do not solder on the cell body, do not open,
do not short circuit, do not reverse polarity, do not heat above 100°C, dispose of correctly,
and protect against direct sunlight, dampness and dew.
Disposal
Caution
Batteries must be disposed of in accordance with local regulations.
Preparation
Note
For the BIOS setting "Profile: Standard" the configuration data of the device is deleted when
the battery replacement takes more than 20 seconds.
For the BIOS setting "Profile: User" the configuration data of the device is retained; only the
date and time has to be reconfigured.
The content of the SRAM is deleted when the battery replacement takes more than 20
seconds.
1. Note down the current settings of the BIOS Setup.
A list in which you can note down this information is found in the BIOS manual.
2. Isolate the device from mains and disconnect all connection cables.
Notice
You can also replace the battery while the device is running; do not touch anything with
the device in this case. We recommend switching off the device beforehand.