Cockpit switches - No reaction from CIDS-related cockpit switches
TASK 23-73-00-810-869-A
Cockpit switches - No reaction from CIDS-related cockpit switches
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 23-73-00-710-176-A ** ON A/C NOT FOR ALL
Subtask 23-73-00-810-418-A
[Rev.8 from Aug 2018]
2026.04.04 04:25:54 UTC
Cockpit switches - No reaction from CIDS-related cockpit switches
1. Possible Causes
- DIR-CIDS, 1 [101RH]
- wiring
SEAT BELTS (191RH) switch - SEAT BELTS switch.
NO SMOKING (190RH) switch - NO SMOKING switch
CALLS/FWD (181RH1) switch CALLS/AFT (181RH2) switch CALLS/ALL (181RH3) switch CALLS/EXIT (181RH4) switch CALLS/MID (181RH5) switch CALLS/EMER CALL (180RH) switch Pushbutton switch (181RH1) Pushbutton switch (181RH2) Pushbutton switch (180RH) Pushbutton switch (181RH3) Pushbutton switch (181RH4) Pushbutton switch (181RH5)
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 23-73-00-740-005 | BITE-Test of the Cabin Intercommunication Data System (CIDS) through the CFDS |
| ASM 237302 | |
| ASM 237304 | |
| AMM 23-73-34-000-001 | Removal of the CIDS Director |
| AMM 23-73-34-400-001 | Installation of the CIDS Director |
Subtask 23-73-00-710-176-A ** ON A/C NOT FOR ALL
A. Test
(1) Do the CIDS BITE test through the CFDS.
AMM 23-73-00-740-005
(2) In the cockpit, on the overhead panel 25VU:
Subtask 23-73-00-710-176-C ** ON A/C NOT FOR ALL (1) Do the CIDS BITE test through the CFDS.
AMM 23-73-00-740-005
(2) In the cockpit, on the overhead panel 25VU:
- set the switch related to the fault to the ON postion:
- the SEAT BELTS switch (191RH),
- the NO SMOKING switch (190RH),
- the EXIT switch (190RH).
- push the pushbutton switch related to the fault:
- the EMER CALL pushbutton switch (180RH),
- the FWD pushbutton switch (181RH1),
- the AFT pushbutton switch (181RH2).
A. Test
(1) Do the CIDS Interface and Power-Up test through the CFDS.
AMM 23-73-00-740-005
(2) In the cockpit, on the overhead panel 25VU:
Subtask 23-73-00-710-176-D ** ON A/C NOT FOR ALL (1) Do the CIDS Interface and Power-Up test through the CFDS.
AMM 23-73-00-740-005
(2) In the cockpit, on the overhead panel 25VU:
- set the switch related to the fault to the ON postion:
- the SEAT BELTS switch (191RH),
- the NO SMOKING switch (190RH),
- the EXIT switch (190RH).
- push the pushbutton switch related to the fault to the ON position:
- the EMER CALL pushbutton switch (180RH),
- the FWD pushbutton switch (181RH1),
- the AFT pushbutton switch (181RH2).
A. Test
(1) Do the CIDS Interface and Power-Up test through the CFDS.
AMM 23-73-00-740-005
(2) In the cockpit, on the overhead panel 25VU:
4. Fault Isolation(1) Do the CIDS Interface and Power-Up test through the CFDS.
AMM 23-73-00-740-005
(2) In the cockpit, on the overhead panel 25VU:
- set the SEAT BELTS switch (191RH) to ON,
- set the NO SMOKING switch (190RH) to ON.
- push the EMER CALL pushbutton switch (180RH),
- push the FWD pushbutton switch (181RH1),
- push the AFT pushbutton switch (181RH2),
- push the ALL pushbutton switch (181RH3),
- push the EXIT pushbutton switch (181RH4),
- push the MID pushbutton switch (181RH5).
Subtask 23-73-00-810-418-A
A. If the test gives a different maintenance message, do the trouble shooting procedure related to the maintenance message.
Subtask 23-73-00-810-419-A B. If there is no reaction of all the CIDS related cockpit-switches in the cabin:
Subtask 23-73-00-810-420-D ** ON A/C NOT FOR ALL - replace the DIR-CIDS, 1 [101RH] AMM 23-73-34-000-001 and AMM 23-73-34-400-001.
C. If no FASTEN SEAT BELT signs in the cabin come on:
Subtask 23-73-00-810-423-D ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open,
- make sure that the EMER LT (4WL) switch is in the OFF position.
- make sure that the SEAT BELTS (191RH) switch is in the ON position,
- open these CBs:
49VU: 150RH (G01) COM DIR ESS/1
49VU: 157RH (G02) COM DIR ESS/2
121VU:151RH (M06) CIDS/DIR NORM/1
121VU:156RH (M07) CIDS/DIR NORM/2, - wait for approx. 10 s and close the CBs 156RH and 157RH,
- stop for approx. 120 s,
- check if the FASTEN SEAT BELT signs in the cabin come on.
- install a new DIR-CIDS (101RH) AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS connector AB/E15 and SEAT BELTS (191RH) switch,
DIR-CIDS connector AB/D13 and SDAC1 (1WV1) connector AA/8G ASM 237302.
- replace the
SEAT BELTS (191RH) switch .
D. If no NO SMOKING signs in the cabin come on:
Subtask 23-73-00-810-420-F ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open,
- make sure that the EMER LT (4WL) switch is in the OFF position,
- make sure that the NO SMOKING (190RH) switch is in the ON position,
- open these CBs:
49VU: 150RH (G01) COM DIR ESS/1
49VU: 157RH (G02) COM DIR ESS/2
121VU:151RH (M06) CIDS/DIR NORM/1
121VU:156RH (M07) CIDS/DIR NORM/2, - wait for 10 s and close the CBs 156RH and 157RH,
- stop for approx. 120 s,
- check if the NO SMOKING signs in the cabin come on.
- install a new DIR-CIDS (101RH) AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS 101RH connector AB/D15 and NO SMOKING (190RH) switch,
DIR-CIDS 101RH connector AB/C13 and SDAC1 (1WV1) connector AA/7H ASM 237302.
- replace the
NO SMOKING (190RH) switch .
E. If no FASTEN SEAT BELT signs in the cabin come on:
Subtask 23-73-00-810-423-J ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open,
- make sure that the SEAT BELTS (191RH) switch is in the ON position,
- open these CBs:
49VU: 150RH COM/CIDS/DIR ESS/1,
49VU: 157RH COM/CIDS/DIR ESS/2,
49VU: 15WH AIR COND/CIDS/SDF/DIR 1 ESS,
49VU: 18WH AIR COND/CIDS/SDF/DIR 2 ESS,
120VU: 151RH COM NAC/CIDS/DIR NORM/1
120VU: 156RH COM NAV/CIDS/DIR NORM/2,
122VU: 14WH AIR COND/CIDS/SDF/DIR NORM/2,
122VU: 17WH AIR COND/CIDS/SDF/DIR NORM/1. - wait for approx. 10 s and close the CBs 156RH, 157RH, 14WH and 18WH,
- stop for approx. 120 s,
- check if the FASTEN SEAT BELT signs in the cabin come on.
- install a new DIR-CIDS (101RH) AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS connector AB/E15 and SEAT BELTS (191RH) switch,
DIR-CIDS connector AB/D13 and SDAC1 (1WV1) connector AA/8G ASM 237302.
- replace the
SEAT BELTS (191RH) switch .
F. If no NO SMOKING signs in the cabin come on:
Subtask 23-73-00-810-420-G ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open,
- make sure that the NO SMOKING (190RH) switch is in the ON position,
- open these CBs:
49VU: 150RH COM/CIDS/DIR ESS/1,
49VU: 157RH COM/CIDS/DIR ESS/2,
49VU: 15WH AIR COND/CIDS/SDF/DIR 1 ESS,
49VU: 18WH AIR COND/CIDS/SDF/DIR 2 ESS,
120VU: 151RH COM NAC/CIDS/DIR NORM/1
120VU: 156RH COM NAV/CIDS/DIR NORM/2,
122VU: 14WH AIR COND/CIDS/SDF/DIR NORM/2,
122VU: 17WH AIR COND/CIDS/SDF/DIR NORM/1. - wait for 10 s and close the CBs 156RH, 157RH, 14WH and 18WH,
- stop for approx. 120 s,
- check if the NO SMOKING signs in the cabin come on.
- install a new DIR-CIDS (101RH) AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS 101RH connector AB/D15 and NO SMOKING (190RH) switch,
DIR-CIDS 101RH connector AB/C13 and SDAC1 (1WV1) connector AA/7H ASM 237302.
- replace the
NO SMOKING (190RH) switch .
G. If no FASTEN SEAT BELT signs in the cabin come on:
Subtask 23-73-00-810-423-K ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open.
- make sure that the SEAT BELTS switch (191RH) is in the ON position.
make sure that the EMER EXIT LT (4WL) switch is in the OFF psition. - open these CBs:
49VU: 150RH COM/CIDS/DIR ESS/1,
49VU: 157RH COM/CIDS/DIR ESS/2,
49VU: 15WH AIR COND/CIDS/SDF/DIR 1 ESS,
49VU: 18WH AIR COND/CIDS/SDF/DIR 2 ESS,
120VU: 151RH COM NAC/CIDS/DIR NORM/1,
120VU: 156RH COM NAV/CIDS/DIR NORM/2,
122VU: 14WH AIR COND/CIDS/SDF/DIR NORM/2,
122VU: 17WH AIR COND/CIDS/SDF/DIR NORM/1. - wait for approx. 10s and close the CBs 156RH, 157RH, 14WH and 18WH.
- stop for approx. 120s.
- check if the FASTEN SEAT BELT signs in the cabin come on.
- install a new DIR-CIDS, 1 [101RH] AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS connector AB/E15 and SEAT BELTS switch (191RH),
DIR-CIDS connector AB/D13 and SDAC1 (1WV1) connector AA/8G ASM 237302.
- replace the SEAT BELTS switch. .
H. If no NO SMOKING signs in the cabin come on:
Subtask 23-73-00-810-430-D ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open.
- make sure that the NO SMOKING switch (190RH) is in the ON position.
make sure that the EMER EXIT LT (4WL) switch is in the OFF position. - open these CBs:
49VU: 150RH COM/CIDS/DIR ESS/1,
49VU: 157RH COM/CIDS/DIR ESS/2,
49VU: 15WH AIR COND/CIDS/SDF/DIR 1 ESS,
49VU: 18WH AIR COND/CIDS/SDF/DIR 2 ESS,
120VU: 151RH COM NAC/CIDS/DIR NORM/1,
120VU: 156RH COM NAV/CIDS/DIR NORM/2,
122VU: 14WH AIR COND/CIDS/SDF/DIR NORM/2,
122VU: 17WH AIR COND/CIDS/SDF/DIR NORM/1. - wait for 10s and close the CBs 156RH, 157RH, 14WH and 18WH.
- stop for approx. 120s.
- check if the NO SMOKING signs in the cabin come on.
- install a new DIR-CIDS, 1 [101RH] AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS 101RH connector AB/D15 and NO SMOKING switch (190RH),
DIR-CIDS 101RH connector AB/C13 and SDAC1 (1WV1) connector AA/7H ASM 237302.
- replace the NO SMOKING switch .
I. If there is no reaction of the AIPs, ACPs and the ATTND-loudspeakers in the cabin:
Subtask 23-73-00-810-430-F ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open,
- make sure that the EMER LT (4WL) switch is in the OFF position,
- open these CBs:
49VU: 150RH (G01) COM DIR ESS/1
49VU: 157RH (G02) COM DIR ESS/2
121VU:151RH (M06) CIDS/DIR NORM/1
121VU:156RH (M07) CIDS/DIR NORM/2, - wait for approx. 10 s and close the CBs 156RH and 157RH,
- stop for approx. 120 s,
- push all CALL pushbuttons on the cockpit overhead panel 21VU (CALLS) again,
- check that each CALL pushbutton has an associated reaction in the cabin on the AIP, ACP and ATTND loudspeaker.
- install a new DIR-CIDS (101RH) AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS 101RH connector AB/3B and CALLS/FWD (181RH1) switch,
DIR-CIDS 101RH connector AB/3C and CALLS/AFT (181RH2) switch,
DIR-CIDS 101RH connector AB/3D and CALLS/ALL (181RH3) switch,
DIR-CIDS 101RH connector AB/8K and CALLS/EXIT (181RH4) switch,
DIR-CIDS 101RH connector AB/3E and CALLS/MID (181RH5) switch,
ASM 237302
DIR-CIDS 101RH connector AB/A3 and CALLS/EMER CALL (180RH) switch
ASM 237304.
- replace the:
CALLS/FWD (181RH1) switch ,
and/orCALLS/AFT (181RH2) switch
and/orCALLS/ALL (181RH3) switch
and/orCALLS/EXIT (181RH4) switch
and/orCALLS/MID (181RH5) switch
and/orCALLS/EMER CALL (180RH) switch .
I. If there is no reaction of the AIPs, ACPs and the ATTND-loudspeakers in the cabin:
Subtask 23-73-00-810-430-G ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open,
- open these CBs:
49VU: 150RH (G01) COM DIR ESS/1
49VU: 157RH (G02) COM DIR ESS/2
49VU: 15WH (C06) ESS BUS/SHED
49VU: 18WH (H02) ESS BUS/SHED
120VU:151RH (M06) CIDS/DIR NORM/1
120VU:156RH (M07) CIDS/DIR NORM/2
122VU: 14WH (T18) NORM BUS 2
122VU: 17WH (M07) NORM BUS 2, - wait for approx. 10 s and close the CBs 156RH, 157RH, 14WH and 18WH,
- stop for approx. 120 s,
- push all CALL pushbuttons on the cockpit overhead panel 21VU (CALLS) again,
- check that each CALL pushbutton has an associated reaction in the cabin on the AIP, ACP and ATTND loudspeaker.
- install a new DIR-CIDS (101RH) AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS 101RH connector AB/3B and CALLS/FWD (181RH1) switch,
DIR-CIDS 101RH connector AB/3C and CALLS/AFT (181RH2) switch,
DIR-CIDS 101RH connector AB/A3 and CALLS/EMER CALL (180RH) switch ASM 237302.
- replace the:
CALLS/FWD (181RH1) switch ,
and/orCALLS/AFT (181RH2) switch
and/orCALLS/EMER CALL (180RH) switch .
I. If there is no reaction of the AIPs, ACPs and attendant loudspeakers in the cabin:
Subtask 23-73-00-810-430-J ** ON A/C NOT FOR ALL - make sure that at least one cabin door is open.
make sure that the EMER EXIT LT switch (4WL) is in the OFF position. - open these CBs:
49VU: 150RH (G01) COM DIR ESS/1,
49VU: 157RH (G02) COM DIR ESS/2,
49VU: 15WH (C06) ESS BUS/SHED,
49VU: 18WH (H02) ESS BUS/SHED,
120VU: 151RH (M06) CIDS/DIR NORM/1,
120VU: 156RH (M07) CIDS/DIR NORM/2,
122VU: 14WH (T18) NORM BUS 2,
122VU: 17WH (M07) NORM BUS 2. - wait for approx. 10s and close the CBs 156RH, 157RH, 14WH and 18WH.
- stop for approx. 120s.
- push all pushbutton switches on the cockpit overhead panel 21VU again.
- check that each pushbutton switch has an associated reaction in the cabin.
- install a new DIR-CIDS, 1 [101RH] AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS 101RH connector AB/3B and Pushbutton Switch (181RH1),
DIR-CIDS 101RH connector AB/3C and Pushbutton Switch (181RH2),
DIR-CIDS 101RH connector AB/A3 and Pushbutton Switch (180RH).
ASM 237302
- replace the:
Pushbutton switch (181RH1) ,
and/orPushbutton switch (181RH2) ,
and/orPushbutton switch (180RH) .
I. If there is no reaction of the AIPs, ACPs and attendant loudspeakers in the cabin:
Subtask 23-73-00-810-493-A ** ON A/C NOT FOR ALL Subtask 23-73-00-710-227-A - make sure that at least one cabin door is open.
make sure that the EMER EXIT LT switch (4WL) is in the OFF position. - open these CBs:
49VU: 150RH (G01) COM DIR ESS/1,
49VU: 157RH (G02) COM DIR ESS/2,
49VU: 15WH (C06) ESS BUS/SHED,
49VU: 18WH (H02) ESS BUS/SHED,
120VU: 151RH (M06) CIDS/DIR NORM/1,
120VU: 156RH (M07) CIDS/DIR NORM/2,
122VU: 14WH (T18) NORM BUS 2,
122VU: 17WH (M07) NORM BUS 2. - wait for approx. 10s and close the CBs 156RH, 157RH, 14WH and 18WH.
- stop for approx. 120s.
- push all pushbutton switches on the cockpit overhead panel 21VU again.
- check that each pushbutton switch has an associated reaction in the cabin.
- install a new DIR-CIDS, 1 [101RH] AMM 23-73-34-000-001.
- do a check and repair the wiring if necessary between the:
DIR-CIDS 101RH connector AB/A3 and Pushbutton Switch (180RH),
DIR-CIDS 101RH connector AB/3B and Pushbutton Switch (181RH1),
DIR-CIDS 101RH connector AB/3C and Pushbutton Switch (181RH2),
DIR-CIDS 101RH connector AB/3D and Pushbutton Switch (181RH3),
DIR-CIDS 101RH connector AB/8K and Pushbutton Switch (181RH4),
DIR-CIDS 101RH connector AB/3E and Pushbutton Switch (181RH5).
ASM 237302
- replace the:
Pushbutton switch (180RH) ,
and/orPushbutton switch (181RH1) ,
and/orPushbutton switch (181RH2) ,
and/orPushbutton switch (181RH3) ,
and/orPushbutton switch (181RH4) ,
and/orPushbutton switch (181RH5) .
K. Do the test given in Para. 3.A.