4-2
Section 4 — Maintenance
Servicing Precautions
CAUTION
Do not operate the signal processor frame with its doors open for an extended
period of time. Failure to observe this precaution may result in improper air flow and
cause overheating of components.
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. The Model 4000 has two Control
Processor modules. Follow the procedure listed below:
1.
Remove the Control Processor I module located in Slot A1 in the Model 4000
Switcher Processor Frame.
2.
Remove the jumper located near the Lithium battery.
3.
Rremove the Control Processor II module located in slot A2 in the Switcher
Processor Frame.
4.
Remove the jumper across J9. Jumper J9 is located near the Lithium battery.
5.
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.
6.
Replace the Control Processor I and II module into the Processor Frame.
7.
Repower the Signal Processor Frame.
Summary of Contents for Grass Valley 4000
Page 3: ...iii Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Page 4: ...iv Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Page 34: ...1 20 Section 1 System Overview ...
Page 138: ...2 104 Section 2 Installation ...
Page 196: ...3 58 Section 3 Functional Description ...
Page 286: ...Index 6 Index ...