6-8 888-2408-002
WARNING: Disconnect primary power prior to servicing.
Troubleshooting
• PAC - Power Amplifier Controller
• COMM - Communications
• XOVER - Crossover Protection: One PA Controller crosses over to protect the
PAs controlled by the other PA Controller, should it become inoperative.
• PSC - Power Supply Controller
• PS# - Power Supply # (PS1 or PS2)
• DSCHG - Discharge
• Start - Soft Start
• HS - Heat Sink
• PHS_LS - Phase Loss
• OV - Over Voltage
• UV - Under Voltage
• TAP# - Power Supply SCR TAP# (TAP1, TAP2, TAP3, or TAP4)
6.6.4 Fault Listing
Table 6-3, Table 6-4, and Table 6-5 provide a quick reference, containing a complete
listing of all of the faults which can show up on the Diagnostics Display Menu,
including their effect on transmitter operation and a brief comment explaining the
fault.
• Table 6-3 on page 6-35 includes faults that are associated with the Master Con-
troller Board (which includes the IPA).
• Table 6-4 on page 6-37 includes faults that are associated with the PA Controller
Boards, PAs and ISO Loads.
• Table 6-5 on page 6-39 includes faults that are associated with the PS Controller
Board and the power supply itself.
These tables are meant as a summary and quick reference point. The rest of this
section will be dedicated to giving detailed information on each of these faults.
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