INSTALLATION MANUAL OPERATION MANUAL INSPECTION LOG
KANNAD 406 AF / AF-H / AF (6D)
PAGE: 401
JUN 23/2008
TROUBLESHOOTING
1. General
Procedure for fault isolation on board uses the visual indicator of the ELT’s front
panel. This visual indicator is activated by a self-test capability within the ELT.
2. Faults on Self-test
A. Visual indicator
When the self-test is carried out, the number of flashes gives an indication of
the faulty parameter detected during the self-test.
(1)3+1 flashes
- Low battery voltage:
Check battery, refer to CMM 25-63-01 for repair
(see note 1 below)
.
(2) 3+2 flashes
- Low RF power:
Check 406 MHz power, refer to CMM 25-63-01 for repair
(see note 1 below)
.
(3) 3+3 flashes
- Faulty VCO locking (faulty frequency):
Check 406 MHz frequency, refer to CMM 25-63-01 for repair
(see note 1
below)
.
(4) 3+4 flashes
- No identification programmed
Check programming
(see note 2 below)
.
NOTE: (1) Only PART/FAR 145 certified stations accredited by
KANNAD can perform these repairs.
(2) Only accredited programming stations can perform
programming.
3. Other faults detected
A. Buzzer
(1)Buzzer does not operate
- Refer to CMM 25-63-01 for repair
(see note 1 above)
.
(2) Buzzer operates permanently when ELT in ARM mode
- Refer to CMM 25-63-01 for repair
(see note 1 above)
.
