Harris RF-5800H - 6.2.4 BIT Troubleshooting

6-7
RF-5800H 150-WATT COMMUNICATION SYSTEM
TROUBLESHOOTING
6.2.4 BIT Troubleshooting
BIT is executed from the KDU of the RF-5800H-MP connected to the RF-5800H 150-Watt Communication System,
or from an optional terminal connected to the RF-5800H-MP. The self-test function of the RF-5800H-MP
automatically tests the system. If a problem is located, a fault code is displayed on the KDU display.
See Figure 6-2 for a sample fault code displayed on the KDU. Table 6-2 is a list of the BIT fault codes. Next to each
fault code is a recommendation of which assemblies may have caused the fault. Remove and replace the
recommended LRUs one at a time in the order listed, executing BIT after replacing each LRU. Paragraph 2.5
includes the LRU removal and installation procedures. If the unit passes BIT, the faulty LRU has been isolated.
If replacing the suspected LRU does not correct the problem, refer to Paragraph 6.3.2, the troubleshooting index, for
additional troubleshooting recommendations.
6.2.5 TAPs
TAPs are provided to help the maintainer isolate faults using procedures other than simple unit swapping. The TAP
begins with a simple description of the fault or symptom. Refer to Table 6-3 for a list of TAPs.
When applicable, begin by performing the listed initial checks. These are checks that can be performed without the
use of tools or test equipment. If the initial checks do not solve the problem, continue by performing the procedure
itself. If the problem still exists after completing the TAP, proceed to the Troubleshooting Index. Refer to
Paragraph 6.3.2.
Figure 6-2. Sample Fault Code Display
Table 6-2. RF-5800H 150-Watt Communication System Operator Initiated BIT Fault Codes
BIT Fault Observed Action
All faults beginning with A1. Replace RF-5800H-MP.
All faults beginning with A4. Replace external power amplifier.
All faults beginning with A5 or A6. Replace external pre/postselector.
All faults beginning with A7. Replace external antenna coupler.
Table 6-3. Troubleshooting Analysis Procedures
TAP Symptom Observed
TAP 1 No power up (vehicular).
TAP 2 No power up (base or transit case).
5800H-010
MODULE #: A4
FAULT
CODE
SUSPECTED
UNIT
FAULT #: 12