Notes On Fault Tree

This step checks for an open 800 CKT.
The last step established that CKT 800 is not open. This step will check CKT 800 while it is operating. Normal operating voltage on CKT 800 is between 0.1 and 5 volts, fluctuating continuously.
If the data line is functioning properly, a loss of ground to the IPC may be the cause of a blank IPC.

Fig 1: Chart B: Data Circuit Problem

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