SKY899
Installation Manual
009-11900-001
Maintenance - Page 4-25
Revision F
July 18, 2013
Table 4-2: Fault Isolation (Continued)
SYMPTOM
CORRECTIVE ACTION
WX-1000 processor has been removed for service;
SKY899 fails to operate.
Check position of the WX-1000 maintenance switch
(NORMAL/OVERRIDE). When the WX-1000 has been
removed for service, it should be set to the OVERRIDE
position. This switch may be located in the avionics bay.
SKY899 paints own aircraft as an intruder (e.g., TA).
a. Verify suppression bus shielded cable is grounded
correctly at both ends.
b. Connect an oscilloscope to the suppression bus and
verify that the SKY899 suppression pulse (100
µ
s
±
5
µ
s) e15 V dc.
c. If less than +15 V dc, the suppression bus is
overloaded.
d. Check all equipment connected to the bus.
e. Repair/replace the offending device.
SKY899 TRC899 has been removed for service; the WX-
1000
Stormscope
fails to operate.
Check the adapter plug (see para 4.7). If the TRC899 is
removed for service, an adapter plug is required to permit
continued operation of the WX-1000.
Alternate dislay does not show traffic information.
a. Access the Service Menu and verify that an alternate
display driver has been selected.
b. Check connection to TRC.
Alternate Display Output:
P1-42 (A429TX1-A)
P1-43 (A429TX1-B)
4.6 ERROR MESSAGES
The 20 most recent errors detected by the system are saved in the System Log (see paragraph 4.4.2.2). For
your convenience, in Table 4-3, we have listed the error messages that have been associated with SKY899
installations. Where appropriate, procedures that may assist in resolving installation problems are
provided. When a severe error occurs SKY899 will fail.
Table 4-3: Installation Related Error Messages
ERROR NO.
MESSAGE
REMARKS
ERROR 06
I2C Bus Error
a. Configuration module is present, however the BUS communication (SDA or SCL) is
incorrect check associated wiring.
b. Replace TRC.
c. Replace configuration module.
ERROR 07
Config Module Error
a. Configuration module is not found check associated wiring.
b. Replace configuration module.
c. Replace TRC.
ERROR 10
Compact Flash Error
a. Unable to read the compact flash information correctly, verify compact flash is inserted
into J12 correctly. Refer to figure 4-40.
b. Try a different compact flash.
c. Replace TRC.
ERROR 14
RF Amplitude Error
a. Check directional antenna and associated cables.
b. Calibrate directional antenna (para 4.4.3)
NOTE
Ensure transponder is in standby and DME is OFF while doing calibration
c. Cycle power and run pilot initiated self-test.
The document reference is online, please check the correspondence between the online documentation and the printed version.