Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 115

7. Remove two frame holding screws from assembly securing plate.
8. Pull the converter assembly out from the back of the cabinet.
REPLACEMENT
1. Remove assembly securing plate from faulty assembly by removing two
holding ·screws and install plate onto replacement assembly.
2. Replace replacement assembly by reversing removal procedure steps 2
through 8.
3. If battery backup option is not installed, remove jumper plug J3 from
faulty assembly and install it on·the replacement assembly.
4. Power up computer cabinet following Compute~ Cabinet Power Up
procedure.
CONTACT DRIVER MODULE ASSEMBLY
REMOVAL
1. Remove ac to de converter assembly following AC to DC Converter
Assembly Removal procedure.
WARNING
If backup battery option is installed,
make sure three cable connectors to the
battery packs are disconnected.
2. Open the converter assembly cover by removing four holding screws.
3. Locate the contact driver (circuit board) assembly along the wall of
the assembly.
4. Disconnect five wire connectors on the terminal and label them for
replacement.
5. Disengage contact driver assembly from standoffs.
REPLACEMENT
1. Engage new contact driver assembly to its standoffs.
2. Reconnect wire connectors to the assembly.
3. Close the converter assembly cover by installing its holding screws.
60469500 A 6-21