888-2406-002
6-35
WARNING: Disconnect primary power prior to servicing.
Troubleshooting
Table 6-4 Z2 or Z2R PA Controller Related Faults
ABBREVIATION
COMMENT
ACTION
PAC#_REF
(n = 1 or 2)
+5V voltage reference fault (< 4.6V)
Transmitter will go to about 20% power as
long as only one PA Controller was affected.
Mute all PAs for the designated
PA Controller and energize all
its relays
PAC#_VOLTS
PSn fault, take out its PAs, other controller’s
PAs still operate
Mute all its PAs & energize all
its relays
PAC#_-15V
Without -15V, PACn has lost its ability to
MUTE the PAs under its control.
Request another controller to
mute the PAs controlled by
designated PAC.
PA#_OC
The designated Power Amplifier has
exceeded 14.5A (where # is a number from 1-
8).
Mute XMTR 120ms, switch out
the PA and release the mute on
the rest of the amplifiers
PA#_OT
The designated Power Amplifier has
exceeded 100
o
C (where # is a number from
1-8).
Mute XMTR 120ms, switch out
the PA and release the mute on
the rest of the amplifiers.
PA#_OUT
The designated PA is not properly seated in
the connector. Make sure the module is
properly inserted and the thumbscrews on the
PA module are engaged (where # is a number
from 1-8).
Mute XMTR 120ms, switch out
the PA and release the mute on
the rest of the PAs. Re-inserting
the PA into the connector should
clear the fault and re-initialize
the PA and the system.
PA#_MUTE_F
LT
Designated PA cannot be muted. Any time
PAs are muted the system checks to see if any
PA is drawing current. If so, then the
controller does not have the ability to mute
that PA and the mute fault is activated.
Mute XMTR (exciter and PAs)
PA#_UC
Designated Power Amplifier’s current is less
than 10% of the Foursome Ave. current.
Could Indicate a failed PA, loss of rf drive to
that PA, a power supply problem or a control
problem.
Mute XMTR 120ms, switch out
the PA and release the mute on
the other PAs.
PA#_ISO
PA isolation load temperature > 150
o
C.
These loads are located on the Isolation
Boards connected to each Z-Plane.
Mute XMTR 120ms, switch out
the PA and release the mute on
the rest of the PAs.
PAC#_ISOBZ
Designated ISO load Temp > 145
o
C. Means
ISO_APC foldback has failed to reduce
temperature of the load. Foldback level is
135
o
C.
NOTE: These are the large ceramic loads in
the middle of the Isolation Boards which are
used as the Isolation resistors for the 2 way
combiners on each Z-Plane. Heating is
caused by PA imbalance.
Will follow 3 Strike Routine
(described in Section 6)
Summary of Contents for Platinum Z2 CD
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Page 70: ...3 14 888 2406 002 WARNING Disconnect primary power prior to servicing Operator Guide ...
Page 130: ...4 60 888 2406 002 WARNING Disconnect primary power prior to servicing Overall System Theory ...
Page 194: ...6 38 888 2406 002 WARNING Disconnect primary power prior to servicing Troubleshooting ...
Page 196: ...7 2 888 2406 002 WARNING Disconnect primary power prior to servicing Parts List ...
