154050-8420 ZEXEL 9 421 616 913 BOSCH HEADLESS SCREW 9421616913 1540508420 223401020a

Replacing a Battery
Disconnect the power supply.
To avoid damage to electronic components, do not remove the processor from the SLC 5/04 Chassis until all power is removed from the power supply.Do not expose memory modules to surfaces or areas that may typically hold an electrostatic charge.
Press the retaining clips at the top of the processor and press the retaining clips at the bottom of the processor.
Remove the processor from the chassis.
To avoid potential damage to the processor, handle all modules by the ends of the carrier or edges of the plastic housing. Skin oil or dirt can corrode metallic surfaces, inhibiting electrical contact.
Connect the new battery to the connector that is on the processor.
Align the processor and the guides in the chassis.
Gently slide the processor in the chassis. Secure the top retainer clips and secure the bottom retainer clips.
Install a wire tie in order to secure the wiring.
Illustration 1 g00563306
Cover any unused slots. This protects the chassis.
Verify that the new battery corrects the problem.