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FC-22 TROUBLESHOOTING 4 - 36 January 2000 © TOSHIBA TEC
4.1.15 ADF related service call
C72 Error of aligning sensor automatic adjustment
1. Check if any foreign matter is present between the aligning sensor and the reflecting mirror, and if
the reflecting mirror is stained.
2. Check if the harness between the aligning sensor and PWA-F-LGC-770 is open-circuited.
3. Check PWA-F-LGC-770 for any open- or short-circuit around IC1, IC14 and CN14.
4. Replace the aligning sensor.
5. Replace PWA-F-LGC-770.
6. Initialize the RADF's EEPROM and perform the sensor automatic adjustment.
C73 EEPROM initializing error
1. Check PWA-F-LGC-770 if any open- or short circuit is present around IC7.
2. Replace PWA-F-LGC-770.
3. Initialize the RADF's EEPROM and perform the sensor automatic adjustment.
C74 Error of exit sensor automatic adjustment
1. Check if any foreign matter is present between the exit sensor and the reflecting mirror, and if the
reflecting mirror is stained.
2. Check if the harness between the exit sensor and PWA-F-LGC-770 is open-circuited.
3. Check PWA-F-LGC-770 for any open- or short-circuit around IC1, IC14 and CN14.
4. Replace the exit sensor.
5. Replace PWA-F-LGC-770.
6. Initialize the RADF's EEPROM and perform the sensor automatic adjustment.