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Section 4 — Maintenance
Draining the Control Processor RAM
If, after installing a software update, your floppy disk drive does not
respond, you need to drain the Control Processor RAM on the two Control
Processor modules. Follow the procedure listed below:
1. Remove the Control Processor I module located in the Switcher
Processor Frame Slot A1 in the Model 2200 frame.
2. Remove the jumper located near the Lithium battery.
3. Wait 15 minutes for the dielectric-capacitors to discharge. Or, to
expedite the discharge process, connect the left jumper-pin to the
nearest ground. This action drains the capacitor’s charge immediately.
4. Replace the Control Processor module into the Processor Frame.
5. Then remove the Control Processor II module located in slot A2 in the
Switcher Processor Frame.
6. Remove the jumper across J9. Jumper J9 is located near the Lithium
battery.
7. Wait 15 minutes for the dielectric-capacitors to discharge. Or, to
expedite the discharge process, connect the right jumper-pin to the
nearest ground. This action drains the capacitor’s charge immediately.
8. Replace the Control Processor II module into the Processor Frame.
9. Replace the Control Processor module(s) and return power to the
frame.