400 SERIES MAINTENANCE MANUAL
Page 3-11
P/N 190-00140-05
Rev. C
Table 3-6. Testing Failures
Main Board
(continued)
TEST FAILURE
TEST
PARAGRAPH
RECOMMENDED ACTION
GPS Antenna Bias
5.7.6.10
Replace GPS Module (see paragraph 4.5.5)
GPS Noise
5.7.6.11
Replace GPS Module (see paragraph 4.5.5)
Replace Main Board (see paragraph 4.5.5)
Satellite Tracking Test
5.7.6.12
Replace GPS Module (see paragraph 4.5.5)
Replace Main Board (see paragraph 4.5.5)
Main Lateral Left, Right Outputs
5.7.6.13
Replace Main Board (see paragraph 4.5.5)
Main Vertical Up, Down Outputs
5.7.6.14
Replace Main Board (see paragraph 4.5.5)
Main To/From Output
5.7.6.15
Replace Main Board (see paragraph 4.5.5)
Main Lateral Flag Output
5.7.6.16
Replace Main Board (see paragraph 4.5.5)
Main Vertical Flag Output
5.7.6.17
Replace Main Board (see paragraph 4.5.5)
Main Lateral Super Flag Output
5.7.6.18
Replace Main Board (see paragraph 4.5.5)
Main Vertical Super Flag Output
5.7.6.19
Replace Main Board (see paragraph 4.5.5)
Annunciate Outputs
5.7.6.20
Replace Main Board (see paragraph 4.5.5)
OBI Serial Interface
5.7.6.21
Replace Main Board (see paragraph 4.5.5)
Discrete Switch and Altitude Inputs
5.7.6.22
ARINC 429 Xmit and Rcvr
5.7.6.23
Replace Main Board (see paragraph 4.5.5)
429 RX 1 and 2 Low Speed
5.7.6.23A
Replace Main Board (see paragraph 4.5.5)
429 RX 1 and 2 High Speed
5.7.6.23A
Replace Main Board (see paragraph 4.5.5)
GPS RS232 1
5.7.6.24A
Replace Main Board (see paragraph 4.5.5)
GPS RS232 2
5.7.6.24B
Replace Main Board (see paragraph 4.5.5)
GPS RS232 3
5.7.6.24C
Replace Main Board (see paragraph 4.5.5)
GPS RS232 4
5.7.6.24D
Replace Main Board (see paragraph 4.5.5)
OBS
5.7.6.25
Replace Main Board (see paragraph 4.5.5)
