Buy 146110-3220 ZEXEL 9 461 615 857 BOSCH CONTROL VALVE 9461615857 1461103220 8971381610

Replacing a Power Supply
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.
Remove the two retaining screws that secure the power supply to the chassis.
Remove the power supply 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.
Align the new power supply and the guides in the chassis.
Gently slide the power supply in the chassis. Secure the top retainer clips and secure the bottom retainer clips.
Install the two retaining screws that secure the power supply to the chassis.
Install a wire tie in order to secure your wiring.
Cover any unused slots. This protects the chassis.
Illustration 1 g00563308
Verify that the new power supply corrects the problem.