MAINTENANCE MANUAL
IFR 4000
2-2-2
Page 5
Aug 1/04
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE
ACTION
8
Self Test Failure
1. RAM Test
fails
Probable source of failure is the Processor PCB A ssy.
2. Flash
fails
Probable source of failure is the Processor PCB A ssy.
3. CPLD
fails
Probable source of failure is the Processor PCB A ssy.
4. NVRAM
fails
Probable source of failure is the Processor PCB A ssy.
5. FPGA
fails
Probable source of failure is the Multi-Function PCB Assy.
6. USB
fails
Probable source of failure is the Multi-Function PCB Assy.
7. Keypad
fails
Probable sources of failure are the Multi-Function PCB A ssy, Keypad PCB
Assy and the interconnecting cables.
8. LCD
fails
Probable sources of failure are the Multi-Function PCB A ssy, LCD PCB
Assy and the interconnecting cables.
9. Battery
fails
Probable source of failure is the Battery.
10. Lock Detect
fails
Probable source of failure is the RF Assy.
11. Level Detect
fails
Probable source of failure is the RF Assy.
12. SWR
fails
Probable source of failure is the RF Assy.
13. Frequency Counter
fails
Probable source of failure is the RF Assy.
14. Localizer
fails
Probable source of failure is the RF Assy.
15. Marker
fails
Probable source of failure is the RF Assy.
Summary of Contents for IFR 4000
Page 1: ...NAV COMM Test Set Maintenance Manual 1002 5600 4P0 IFR 4000...
Page 3: ...MAINTENANCE MANUAL IFR 4000 FOR QUALIFIED SERVICE PERSONNEL ONLY...
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Page 166: ...MAINTENANCE MANUAL IFR 4000 2 3 1 Page 6 Aug 1 04 STEP PROCEDURE 4 Remove the Fuse...
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