- do a check for 28VDC at pin A/A of the wiper motor converter 6DB1(6DB2) (Ref. ASM 30-45/01).
(1) If there is no 28VDC:
- do a check and repair the wiring from pin 2 of the circuit breaker 4DB1(4DB2) to pin A of the wiper motor converter 6DB1(6DB2)
(2) On the panel 21VU(22VU):
- set the WIPER control switch to SLOW.
(3) If there is 28VDC:
- do a check for ground at pin C of the wiper motor converter 6DB1(6DB2).
(a) If there is no ground signal:
- do a check of the wiring from pin C of the wiper motor converter 6DB1(6DB2) to pin 3 of the WIPER control switch 5DB1(5DB2).
1 If there is no continuity:
_ - repair the above wiring.
2 If there is continuity:
_
- replace the CTL SW-WIPER, CAPT (5DB1) (CTL SW-WIPER, F/O (5DB2)).
(b) If there is a ground signal:
replace the MOTOR CONVERTER-WIPER, CAPT (6DB1) (MOTOR R CONVERTER-WIPER, F/O (6DB2)) (Ref. AMM TASK 30-45-51-000-001) and R (Ref. AMM TASK 30-45-51-400-001).
(4) On the panel 21VU(22VU):
- set the WIPER control switch to FAST.
(5) If there is 28VDC:
- do a check for ground at pin E of the wiper motor converter 6DB1(6DB2).
(a) If there is no ground signal:
- do a check of the wiring from pin E of the wiper motor converter 6DB1(6DB2) to pin 4 of the WIPER control switch 5DB1(5DB2).
1 If there is no continuity:
_ - repair the above wiring.
2 If there is continuity:
_
- replace the CTL SW-WIPER, CAPT (5DB1) (CTL SW-WIPER, F/O (5DB2)).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞30-45-00∞∞∞∞∞∞∞∞∞∞Page 204
Nov 01/00 CES
R R (b) If there is a ground signal: - replace the MOTOR CONVERTER-WIPER, CAPT (6DB1) (MOTOR CONVERTER-WIPER, F/O (6DB2)) (Ref. AMM TASK 30-45-51-000-001) and (Ref. AMM TASK 30-45-51-400-001).
C. Do the test given in Para. 3.
The Wiper Does not Go Back Correctly to the Park Position
1. Possible Causes
_______________
- 6DB1(6DB2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 30-45-00-200-001 Inspection/Check of the Operation of the Windshield
Wipers. AMM 30-45-00-720-001 Functional Test of the Windshield Rain Protection. AMM 30-45-51-000-001 Removal of the Wiper Motor Converter (6DB1, 6DB2) AMM 30-45-51-400-001 Installation of the Wiper Motor Converter (6DB1,
6DB2) R AMM 30-45-52-400-002 Installation of the Wiper Arm (306DM, 307DM)
3. Fault Confirmation
__________________
A. Test Do the functional test of the windshield rain protection (Ref. AMM TASK 30-45-00-720-001).
4. Fault Isolation
_______________
A. Table of the circuit breakers used in this procedure:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU ANTI ICE/F/O/WIPER 4DB2 W12 122VU ANTI ICE/WIPER/CAPT 4DB1 X12
B. If the wiper(s) does(do) not go back correctly to the park position:
(1) On the panel 21VU (22VU), make sure that the WIPER control switch 5DB1(5DB2) is at OFF.
(2) Do a check for the correct sweeping angle and park position of the wiper(s) (Ref. AMM TASK 30-45-00-200-001) and do a check for the correct operation of the wiper(s) given in Para. 4.D. of the
R installation of the Wiper Arm (Ref. AMM TASK 30-45-52-400-002).
- If wiper does not go back correctly to parking position or if wiper does not stop in parking position: adjust/replace microswitches (CMM 304551 p104)
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