W DOC AIRBUS | AMM A320F

Check Firing Circuit Continuity and Perform Operational Check of Priority Switching

TASK 26-23-00-710-003-A-01
Check Firing Circuit Continuity and Perform Operational Check of Priority Switching

CAUTION: BEFORE YOU INSTALL/REMOVE THE GSE-TOOL, READ THE INSTRUCTIONS IN THE APPLICABLE GSE INSTRUCTION MANUAL. WHILE YOU OPERATE THIS TOOL, CAREFULLY OBEY THEM. IF YOU DO NOT OBEY THE INSTRUCTIONS, DAMAGE TO EQUIPMENT CAN OCCUR.
ZONE: 132
ZONE: 162
ZONE: 172
ZONE: 210
1. Reason for the Job
Refer to the MPD TASK: 262300-06
CHECK FIRING CIRCUIT CONTINUITY AND PERFORM OPERATIONAL CHECK OF PRIORITY SWITCHING
NOTE: There are alternative procedures for the check of firing circuit continuity and perform the operational check of priority switching. This task gives one of the procedures. For the other procedures, refer to the related task in this page block.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
BOOMSET 600 OHMS
No specific
AR
CAP - BLANKING
No specific
AR
ELECTRICALLY GROUNDED WRIST STRAP
No specific
1
HEADSET 600 OHMS
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
10-101950-81
AR
SHUNT PLUG-FIRE EXTINGUISHER CARTRIDGE,HTL
2-100831-1
AR
PLUG-SHUNT
99L26208849001
1
TESTBOX-CIRCUIT, FES
M83723-60-110AN
AR
PROTECTIVE CAP-FIRE EXTINGUISHER CARTRIDGE
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.14QEB1)
Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
132
FORWARD CARGO COMPARTMENT
162
BULK CARGO COMPARTMENT
172
AFT CABIN U/FLOOR COMPARTMENT
210
CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
161DW, 826
132MW, 825
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 25-54-12-000-003-A
Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A
Installation of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-55-12-000-001-A
Removal of the Aft Cargo-Compartment Partition at FR65
TASK 25-55-12-400-001-A
Installation of the Aft Cargo-Compartment Partition at FR65
TASK 26-16-00-710-001-A
Operational Check of Cargo Compartment Smoke Detection by PTT
TASK 31-60-00-860-001-A
EIS Start Procedure
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
F Test Tool (99L26208849001 - TESTBOX-CIRCUIT, FES) ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 26-23-00-861-062-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
Subtask 26-23-00-010-062-A ** ON A/C NOT FOR ALL
B. Get Access
   (1) Open forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001).
   (2) Set CARGO COMPT LIGHT switch 6LU to the ON position.
   (3) Remove sidewall panel 132MW (Ref. AMM TASK 25-54-12-000-003).
Subtask 26-23-00-010-062-D ** ON A/C NOT FOR ALL
B. Get Access
   (1) Open aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-001).
   (2) Set CARGO COMPT LIGHT switch 8LU to the ON position.
   (3) Remove partition panel 161DW (Ref. AMM TASK 25-55-12-000-001).
Subtask 26-23-00-865-082-A ** ON A/C NOT FOR ALL
C. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
49VUAIR COND/SDCU/CHAN111WQC06
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC05
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
122VUAIR COND/SDCU/CHAN212WQT18
** ON A/C NOT FOR ALL
122VUAIR COND/CARGO/FIRE/EXTIG1WXT19
4. Procedure
Subtask 26-23-00-710-061-A ** ON A/C NOT FOR ALL
A. Operational Test
   (1) Do the operational test of the cargo-compartment smoke-detection system with the Push-To-Test (PTT) pushbutton switch (Ref. AMM TASK 26-16-00-710-001).
Subtask 26-23-00-865-083-A ** ON A/C NOT FOR ALL
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
49VUAIR COND/CIDS/SDF/DIR2 ESS18WHC06
49VUAIR COND/CIDS/SDF/DIR1 ESS15WHC05
** ON A/C NOT FOR ALL
49VUAIR COND/SDCU/CHAN111WQC06
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC05
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
122VUAIR COND/CIDS/SDF/DIR NORM/214WHT18
122VUAIR COND/CIDS/SDF/DIR NORM/117WHT17
** ON A/C NOT FOR ALL
122VUAIR COND/SDCU/CHAN212WQT18
** ON A/C NOT FOR ALL
122VUAIR COND/CARGO/FIRE/EXTIG1WXT19
Subtask 26-23-00-020-058-B ** ON A/C NOT FOR ALL
C. Preparation for the Test
F Test Tool (99L26208849001 - TESTBOX-CIRCUIT, FES) ** ON A/C NOT FOR ALL
NOTE: For this test procedure, it is recommended that a minimum of two persons speak with each other through the service interphone system. One person to monitor cockpit overhead panel 22VU and the other person to be at zone 162.
   (1) On the CAPT jack panel, connect the HEADSET 600 OHMS to the related connector.
   (2) On overhead panel 50VU, make sure that the ON legend on the SVCE INT OVRD pushbutton switch is off.
   (3) In zone 162, connect the BOOMSET 600 OHMS to the service interphone jack.
   (4) Prepare the 99L26208849001 TESTBOX-CIRCUIT, FES (referred to as the test tool):
     (a) Make sure that the battery (9V) is in the battery housing.
     (b) Set the power switch to the ON position.
     (c) Make sure that the green LED POWER is on.
     (d) Make sure that the voltmeter and the ammeter display units are on.
     (e) If necessary, push and hold the DISPLAY BACKLIGHT pushbutton:
       1 Make sure that the voltmeter and the ammeter display-unit lights are on.
     (f) Connect the correct adapter cable to the test tool.
   (5) At the fire extinguisher bottles:
     (a) Make sure that you are grounded with the ELECTRICALLY GROUNDED WRIST STRAP.
     (b) At the cartridges of the fire extinguisher bottles:
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
       1 Remove and discard the lockwire from the electrical connector.
WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
       2 Disconnect the electrical connectors from the cartridges as follows:
  • Electrical connector 4015WX-A from cartridge 4016WX
  • Electrical connector 4015WX-C from cartridge 4018WX
  • Electrical connector 4020WX-A from cartridge 4021WX
  • Electrical connector 4020WX-C from cartridge 4023WX.
       3 Put the 10-101950-81 SHUNT PLUG-FIRE EXTINGUISHER CARTRIDGE,HTL on each cartridge.
       4 Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Subtask 26-23-00-020-058-C
C. Preparation for the Test
F Test Tool (99L26208849001 - TESTBOX-CIRCUIT, FES) ** ON A/C NOT FOR ALL
NOTE: For this test procedure, it is recommended that a minimum of two persons speak with each other through the service interphone system. One person to monitor cockpit overhead panel 22VU and the other person to be at zone 132.
   (1) On the CAPT jack panel, connect the HEADSET 600 OHMS to the related connector.
   (2) On overhead panel 50VU, make sure that the ON legend on the SVCE INT OVRD pushbutton switch is off.
   (3) In zone 132, connect the BOOMSET 600 OHMS to the service interphone jack.
   (4) Prepare the 99L26208849001 TESTBOX-CIRCUIT, FES (referred to as the test tool):
     (a) Make sure that the battery (9V) is in the battery housing.
     (b) Set the power switch to the ON position.
     (c) Make sure that the green LED POWER is on.
     (d) Make sure that the voltmeter and the ammeter display units are on.
     (e) If necessary, push and hold the DISPLAY BACKLIGHT pushbutton:
       1 Make sure that the voltmeter and the ammeter display-unit lights are on.
     (f) Connect the correct adapter cable to the test tool.
   (5) At the fire extinguisher bottles:
     (a) Make sure that you are grounded with the ELECTRICALLY GROUNDED WRIST STRAP.
     (b) At the cartridges of the fire extinguisher bottles:
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
       1 Remove and discard the lockwire from the electrical connector.
WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
       2 Disconnect the electrical connectors from the cartridges as follows:
  • Electrical connector 4005WX-A from cartridge 4001WX
  • Electrical connector 4005WX-C from cartridge 4003WX
  • Electrical connector 4010WX-A from cartridge 4011WX
  • Electrical connector 4010WX-C from cartridge 4013WX.
       3 Put the 2-100831-1 PLUG-SHUNT on each cartridge.
NOTE: The M83723-60-110AN PROTECTIVE CAP-FIRE EXTINGUISHER CARTRIDGE can be used an alternative to the 2-100831-1 PLUG-SHUNT.
       4 Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Subtask 26-23-00-020-058-D ** ON A/C NOT FOR ALL
C. Preparation for the Test
F Test Tool (99L26208849001 - TESTBOX-CIRCUIT, FES) ** ON A/C NOT FOR ALL
NOTE: For this test procedure, it is recommended that a minimum of two persons speak with each other through the service interphone system. One person to monitor cockpit overhead panel 22VU and the other person to be at zone 132.
   (1) On the CAPT jack panel, connect the HEADSET 600 OHMS to the related connector.
   (2) On overhead panel 50VU, make sure that the ON legend on the SVCE INT OVRD pushbutton switch is off.
   (3) In zone 132, connect the BOOMSET 600 OHMS to the service interphone jack.
   (4) Prepare the 99L26208849001 TESTBOX-CIRCUIT, FES (referred to as the test tool):
     (a) Make sure that the battery (9V) is in the battery housing.
     (b) Set the power switch to the ON position.
     (c) Make sure that the green LED POWER is on.
     (d) Make sure that the voltmeter and the ammeter display units are on.
     (e) If necessary, push and hold the DISPLAY BACKLIGHT pushbutton:
       1 Make sure that the voltmeter and the ammeter display-unit lights are on.
     (f) Connect the correct adapter cable to the test tool.
   (5) At the fire extinguisher bottles:
     (a) Make sure that you are grounded with the ELECTRICALLY GROUNDED WRIST STRAP.
     (b) At the cartridges of the fire extinguisher bottles:
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
       1 Remove and discard the lockwire from the electrical connector.
WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
       2 Disconnect the electrical connectors from the cartridges as follows:
  • Electrical connector 4005WX-A from cartridge 4001WX
  • Electrical connector 4005WX-C from cartridge 4003WX
  • Electrical connector 4010WX-A from cartridge 4011WX
  • Electrical connector 4010WX-C from cartridge 4013WX.
       3 Put the 2-100831-1 PLUG-SHUNT on the cartridges of fire extinguisher bottle 4005WX.
NOTE: The M83723-60-110AN PROTECTIVE CAP-FIRE EXTINGUISHER CARTRIDGE can be used an alternative to the 2-100831-1 PLUG-SHUNT.
       4 Put the 10-101950-81 SHUNT PLUG-FIRE EXTINGUISHER CARTRIDGE,HTL on the cartridges of fire extinguisher bottle 4010WX.
       5 Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Subtask 26-23-00-865-084-A ** ON A/C NOT FOR ALL
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC05
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
122VUAIR COND/CARGO/FIRE/EXTIG1WXT19
Subtask 26-23-00-210-061-A ** ON A/C NOT FOR ALL
E. Visual Check of the toggle switches 5WX and 6WX
   (1) On the cargo-smoke overhead panel 22VU:
     (a) Make sure that the guards of the toggle switches 5WX and 6WX are not bent in AGENT 1 or AGENT 2 position and do not push the toggle switches in AGENT 1 or AGENT 2 position.
     (b) Lift the guards of the toggle switches 5WX and 6WX and make sure that the toggle switches do not move freely and are in the neutral positions.
     (c) Lower the guards of the toggle switches 5WX and 6WX.
Subtask 26-23-00-720-056-A ** ON A/C NOT FOR ALL
F. Functional Test of the Firing Circuit Continuity
F Test Tool (99L26208849001 - TESTBOX-CIRCUIT, FES) ** ON A/C NOT FOR ALL
WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.
WARNING: MAKE SURE THAT ALL THE ELECTRICAL CONNECTORS ARE DISCONNECTED FROM THE CARTRIDGES OF THE FIRE EXTINGUISHER BOTTLES BEFORE YOU DO THIS TEST. IF AN ELECTRICAL CONNECTOR IS CONNECTED, AN ACCIDENTAL EXPLOSION OF THE CARTRIDGE WILL OCCUR. THIS CAN CAUSE INJURY TO PERSONS.
   (1) Do this test:
ACTION
RESULT
1.In the cargo compartment, on the electrical connector 4005WX-C:
  • Remove the blanking cap and connect the adapter cable of the test tool.

2.In the cargo compartment, on the test tool:
  • Select PIN 1/2.
In the cargo compartment, on the test tool:
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
CAUTION: DO NOT APPLY FORCE TO THE TOGGLE SWITCH WHEN THE SWITCH GUARD IS IN POSITION. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE GUARD AND TO THE TOGGLE SWITCH MECHANISM.
3.On the cargo-smoke overhead panel 22VU:

In the cargo compartment, on the test tool:
  • Apply a light force with your finger to the toggle switch 5WX. Make sure that the toggle switch cannot be pushed in AGENT 1 position.
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
  • Lift the guard, set the toggle switch 5WX to the AGENT 1 position.
  • The green LED CURRENT IN comes on.
  • The indication on the ammeter is between 0.8 and 1.2 A.
  • The indication on the voltmeter is between 21 and 33 VDC.
  • Set the toggle switch 5WX to the neutral position. Lower the guard of the toggle switch 5WX.
  • The green LED CURRENT IN goes off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
WARNING: DO NOT CONNECT THE CONNECTOR TO THE CARTRIDGE BEFORE THE TEST IS COMPLETED. IF YOU OPERATE THE FIRE EXTINGUISHING SWITCH WHILE THE CONNECTOR IS CONNECTED, YOU WILL CAUSE A DISCHARGE OF THE FIRE EXTINGUISHER BOTTLE TO OCCUR.
4.Disconnect the adapter cable of the test tool.

5.Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
6.In the cargo compartment, on the electrical connector 4005WX-A:
  • Remove the blanking cap and connect the adapter cable of the test tool.

7.In the cargo compartment, on the test tool:
  • Select PIN 1/2.
In the cargo compartment, on the test tool:
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
CAUTION: DO NOT APPLY FORCE TO THE TOGGLE SWITCH WHEN THE SWITCH GUARD IS IN POSITION. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE GUARD AND TO THE TOGGLE SWITCH MECHANISM.
8.On the cargo-smoke overhead panel 22VU:

In the cargo compartment, on the test tool:
  • Apply a light force with your finger to the toggle switch 6WX. Make sure that the toggle switch cannot be pushed in AGENT 1 position.
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
  • Lift the guard, set the toggle switch 6WX to the AGENT 1 position.
  • The green LED CURRENT IN comes on.
  • The indication on the ammeter is between 0.8 and 1.2 A.
  • The indication on the voltmeter is between 21 and 33 VDC.
  • Set the toggle switch 6WX to the neutral position. Lower the guard of the toggle switch 6WX.
  • The green LED CURRENT IN goes off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
WARNING: DO NOT CONNECT THE CONNECTOR TO THE CARTRIDGE BEFORE THE TEST IS COMPLETED. IF YOU OPERATE THE FIRE EXTINGUISHING SWITCH WHILE THE CONNECTOR IS CONNECTED, YOU WILL CAUSE A DISCHARGE OF THE FIRE EXTINGUISHER BOTTLE TO OCCUR.
9.Disconnect the adapter cable of the test tool.

10.Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
11.In the cargo compartment, on the electrical connector 4010WX-C:
  • Remove the blanking cap and connect the adapter cable to the test tool.

12.In the cargo compartment, on the test tool:
  • Select PIN 1/2.
In the cargo compartment, on the test tool:
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
CAUTION: DO NOT APPLY FORCE TO THE TOGGLE SWITCH WHEN THE SWITCH GUARD IS IN POSITION. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE GUARD AND TO THE TOGGLE SWITCH MECHANISM.
13.On the cargo-smoke overhead panel 22VU:

In the cargo compartment, on the test tool:
  • Apply a light force with your finger to the toggle switch 5WX. Make sure that the toggle switch cannot be pushed in AGENT 2 position.
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
  • Lift the guard, set the toggle switch 5WX to the AGENT 2 position.
  • The green LED CURRENT IN comes on.
  • The indication on the ammeter is between 0.8 and 1.2 A.
  • The indication on the voltmeter is between 21 and 33 VDC.
  • Set the toggle switch 5WX to the neutral position. Lower the guard of the toggle switch 5WX.
  • The green LED CURRENT IN goes off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
WARNING: DO NOT CONNECT THE CONNECTOR TO THE CARTRIDGE BEFORE THE TEST IS COMPLETED. IF YOU OPERATE THE FIRE EXTINGUISHING SWITCH WHILE THE CONNECTOR IS CONNECTED, YOU WILL CAUSE A DISCHARGE OF THE FIRE EXTINGUISHER BOTTLE TO OCCUR.
14.Disconnect the adapter cable of the test tool.

15.Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
16.In the cargo compartment, on the electrical connector 4010WX-A:
  • Remove the blanking cap and connect the adapter cable to the test tool.

17.In the cargo compartment, on the test tool:
  • Select PIN 1/2.
In the cargo compartment, on the test tool:
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
CAUTION: DO NOT APPLY FORCE TO THE TOGGLE SWITCH WHEN THE SWITCH GUARD IS IN POSITION. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE GUARD AND TO THE TOGGLE SWITCH MECHANISM.
18.On the cargo-smoke overhead panel 22VU:

In the cargo compartment, on the test tool:
  • Apply a light force with your finger to the toggle switch 6WX. Make sure that the toggle switch cannot be pushed in AGENT 2 position.
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
  • Lift the guard, set the toggle switch 6WX to the AGENT 2 position.
  • The green LED CURRENT IN comes on.
  • The indication on the ammeter is between 0.8 and 1.2 A.
  • The indication on the voltmeter is between 21 and 33 VDC.
  • Set the toggle switch 6WX to the neutral position. Lower the guard of the toggle switch 6WX.
  • The green LED CURRENT IN goes off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
WARNING: DO NOT CONNECT THE CONNECTOR TO THE CARTRIDGE BEFORE THE TEST IS COMPLETED. IF YOU OPERATE THE FIRE EXTINGUISHING SWITCH WHILE THE CONNECTOR IS CONNECTED, YOU WILL CAUSE A DISCHARGE OF THE FIRE EXTINGUISHER BOTTLE TO OCCUR.
19.Disconnect the adapter cable of the test tool.

20.Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Subtask 26-23-00-720-056-B ** ON A/C NOT FOR ALL
F. Functional Test of the Firing Circuit Continuity
F Test Tool (99L26208849001 - TESTBOX-CIRCUIT, FES) ** ON A/C NOT FOR ALL
WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.
WARNING: MAKE SURE THAT ALL THE ELECTRICAL CONNECTORS ARE DISCONNECTED FROM THE CARTRIDGES OF THE FIRE EXTINGUISHER BOTTLES BEFORE YOU DO THIS TEST. IF AN ELECTRICAL CONNECTOR IS CONNECTED, AN ACCIDENTAL EXPLOSION OF THE CARTRIDGE WILL OCCUR. THIS CAN CAUSE INJURY TO PERSONS.
   (1) Do this test:
ACTION
RESULT
1.In the cargo compartment, on the electrical connector 4015WX-C:
  • Remove the blanking cap and connect the adapter cable of the test tool.

2.In the cargo compartment, on the test tool:
  • Select PIN 1/2.
In the cargo compartment, on the test tool:
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
CAUTION: DO NOT APPLY FORCE TO THE TOGGLE SWITCH WHEN THE SWITCH GUARD IS IN POSITION. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE GUARD AND TO THE TOGGLE SWITCH MECHANISM.
3.On the cargo-smoke overhead panel 22VU:

In the cargo compartment, on the test tool:
  • Apply a light force with your finger to the toggle switch 5WX. Make sure that the toggle switch cannot be pushed in AGENT 1 position.
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
  • Lift the guard, set the toggle switch 5WX to the AGENT 1 position.
  • The green LED CURRENT IN comes on.
  • The indication on the ammeter is between 0.8 and 1.2 A.
  • The indication on the voltmeter is between 21 and 33 VDC.
  • Set the toggle switch 5WX to the neutral position. Lower the guard of the toggle switch 5WX.
  • The green LED CURRENT IN goes off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
WARNING: DO NOT CONNECT THE CONNECTOR TO THE CARTRIDGE BEFORE THE TEST IS COMPLETED. IF YOU OPERATE THE FIRE EXTINGUISHING SWITCH WHILE THE CONNECTOR IS CONNECTED, YOU WILL CAUSE A DISCHARGE OF THE FIRE EXTINGUISHER BOTTLE TO OCCUR.
4.Disconnect the adapter cable of the test tool.

5.Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
6.In the cargo compartment, on the electrical connector 4015WX-A:
  • Remove the blanking cap and connect the adapter cable of the test tool.

7.In the cargo compartment, on the test tool:
  • Select PIN 1/2.
In the cargo compartment, on the test tool:
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
CAUTION: DO NOT APPLY FORCE TO THE TOGGLE SWITCH WHEN THE SWITCH GUARD IS IN POSITION. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE GUARD AND TO THE TOGGLE SWITCH MECHANISM.
8.On the cargo-smoke overhead panel 22VU:

In the cargo compartment, on the test tool:
  • Apply a light force with your finger to the toggle switch 6WX. Make sure that the toggle switch cannot be pushed in AGENT 1 position.
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
  • Lift the guard, set the toggle switch 6WX to the AGENT 1 position.
  • The green LED CURRENT IN comes on.
  • The indication on the ammeter is between 0.8 and 1.2 A.
  • The indication on the voltmeter is between 21 and 33 VDC.
  • Set the toggle switch 6WX to the neutral position. Lower the guard of the toggle switch 6WX.
  • The green LED CURRENT IN goes off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
WARNING: DO NOT CONNECT THE CONNECTOR TO THE CARTRIDGE BEFORE THE TEST IS COMPLETED. IF YOU OPERATE THE FIRE EXTINGUISHING SWITCH WHILE THE CONNECTOR IS CONNECTED, YOU WILL CAUSE A DISCHARGE OF THE FIRE EXTINGUISHER BOTTLE TO OCCUR.
9.Disconnect the adapter cable of the test tool.

10.Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
11.In the cargo compartment, on the electrical connector 4020WX-C:
  • Remove the blanking cap and connect the adapter cable to the test tool.

12.In the cargo compartment, on the test tool:
  • Select PIN 1/2.
In the cargo compartment, on the test tool:
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
CAUTION: DO NOT APPLY FORCE TO THE TOGGLE SWITCH WHEN THE SWITCH GUARD IS IN POSITION. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE GUARD AND TO THE TOGGLE SWITCH MECHANISM.
13.On the cargo-smoke overhead panel 22VU:

In the cargo compartment, on the test tool:
  • Apply a light force with your finger to the toggle switch 5WX. Make sure that the toggle switch cannot be pushed in AGENT 2 position.
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
  • Lift the guard, set the toggle switch 5WX to the AGENT 2 position.
  • The green LED CURRENT IN comes on.
  • The indication on the ammeter is between 0.8 and 1.2 A.
  • The indication on the voltmeter is between 21 and 33 VDC.
  • Set the toggle switch 5WX to the neutral position. Lower the guard of the toggle switch 5WX.
  • The green LED CURRENT IN goes off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
WARNING: DO NOT CONNECT THE CONNECTOR TO THE CARTRIDGE BEFORE THE TEST IS COMPLETED. IF YOU OPERATE THE FIRE EXTINGUISHING SWITCH WHILE THE CONNECTOR IS CONNECTED, YOU WILL CAUSE A DISCHARGE OF THE FIRE EXTINGUISHER BOTTLE TO OCCUR.
14.Disconnect the adapter cable of the test tool.

15.Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
16.In the cargo compartment, on the electrical connector 4020WX-A:
  • Remove the blanking cap and connect the adapter cable to the test tool.

17.In the cargo compartment, on the test tool:
  • Select PIN 1/2.
In the cargo compartment, on the test tool:
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
CAUTION: DO NOT APPLY FORCE TO THE TOGGLE SWITCH WHEN THE SWITCH GUARD IS IN POSITION. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE GUARD AND TO THE TOGGLE SWITCH MECHANISM.
18.On the cargo-smoke overhead panel 22VU:

In the cargo compartment, on the test tool:
  • Apply a light force with your finger to the toggle switch 6WX. Make sure that the toggle switch cannot be pushed in AGENT 2 position.
  • The green LED CURRENT IN is off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
  • Lift the guard, set the toggle switch 6WX to the AGENT 2 position.
  • The green LED CURRENT IN comes on.
  • The indication on the ammeter is between 0.8 and 1.2 A.
  • The indication on the voltmeter is between 21 and 33 VDC.
  • Set the toggle switch 6WX to the neutral position. Lower the guard of the toggle switch 6WX.
  • The green LED CURRENT IN goes off.
  • The indication on the ammeter is less than 5 mA.
  • The indication on the voltmeter is less than 1 VDC.
WARNING: DO NOT CONNECT THE CONNECTOR TO THE CARTRIDGE BEFORE THE TEST IS COMPLETED. IF YOU OPERATE THE FIRE EXTINGUISHING SWITCH WHILE THE CONNECTOR IS CONNECTED, YOU WILL CAUSE A DISCHARGE OF THE FIRE EXTINGUISHER BOTTLE TO OCCUR.
19.Disconnect the adapter cable of the test tool.

20.Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
Subtask 26-23-00-865-085-A ** ON A/C NOT FOR ALL
G. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC05
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
122VUAIR COND/CARGO/FIRE/EXTIG1WXT19
Subtask 26-23-00-420-058-A ** ON A/C NOT FOR ALL
H. After the Test Procedure
   (1) Make sure that you are grounded with the ELECTRICALLY GROUNDED WRIST STRAP.
   (2) Connect the electrical connectors as follows:
WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.
     (a) Remove the shunt plugs from the cartridges.
     (b) Remove the CAP-BLANKING from each electrical connector and receptacle.
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
     (c) Connect the electrical connectors to the cartridges as follows:
  • Electrical connector 4005WX-A to cartridge 4001WX
  • Electrical connector 4005WX-C to cartridge 4003WX
  • Electrical connector 4010WX-A to cartridge 4011WX
  • Electrical connector 4010WX-C to cartridge 4013WX.
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
   (3) Safety the electrical connectors with 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
   (4) On the CAPT jack panel, disconnect the HEADSET 600 OHMS from the related connector.
   (5) In zone 132, disconnect the BOOMSET 600 OHMS from the service interphone jack.
Subtask 26-23-00-420-058-B ** ON A/C NOT FOR ALL
H. After the Test Procedure
   (1) Make sure that you are grounded with the ELECTRICALLY GROUNDED WRIST STRAP.
   (2) Connect the electrical connectors as follows:
WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.
     (a) Remove the shunt plugs from the cartridges.
     (b) Remove the CAP-BLANKING from each electrical connector and receptacle.
CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.
     (c) Connect the electrical connectors to the cartridges as follows:
  • Electrical connector 4015WX-A to cartridge 4016WX
  • Electrical connector 4015WX-C to cartridge 4018WX
  • Electrical connector 4020WX-A to cartridge 4021WX
  • Electrical connector 4020WX-C to cartridge 4023WX.
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
   (3) Safety the electrical connectors with 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
   (4) On the CAPT jack panel, disconnect the HEADSET 600 OHMS from the related connector.
   (5) In zone 162, disconnect the BOOMSET 600 OHMS from the service interphone jack.
Subtask 26-23-00-865-086-A ** ON A/C NOT FOR ALL
I. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
49VUAIR COND/CIDS/SDF/DIR2 ESS18WHC06
49VUAIR COND/CIDS/SDF/DIR1 ESS15WHC05
** ON A/C NOT FOR ALL
49VUAIR COND/SDCU/CHAN111WQC06
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC05
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO FIRE/EXTIG/BTL28WXC04
** ON A/C NOT FOR ALL
49VUAIR COND/CARGO/FIRE/EXTIG/BTL11WXC03
** ON A/C NOT FOR ALL
122VUAIR COND/CIDS/SDF/DIR NORM/214WHT18
122VUAIR COND/CIDS/SDF/DIR NORM/117WHT17
** ON A/C NOT FOR ALL
122VUAIR COND/SDCU/CHAN212WQT18
** ON A/C NOT FOR ALL
122VUAIR COND/CARGO/FIRE/EXTIG1WXT19
Subtask 26-23-00-710-062-A ** ON A/C NOT FOR ALL
J. Operational Test
   (1) Do the operational test of the cargo-compartment smoke-detection system with the Push-To-Test (PTT) pushbutton switch (Ref. AMM TASK 26-16-00-710-001).
5. Close-up
Subtask 26-23-00-410-067-A ** ON A/C NOT FOR ALL
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install sidewall panel 132MW (Ref. AMM TASK 25-54-12-400-003).
   (3) Set CARGO COMPT LIGHT switch 6LU to the OFF position.
   (4) Close forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
Subtask 26-23-00-410-067-D ** ON A/C NOT FOR ALL
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Install partition panel 161DW (Ref. AMM TASK 25-55-12-400-001).
   (3) Set CARGO COMPT LIGHT switch 8LU to the OFF position.
   (4) Close aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).
Subtask 26-23-00-862-062-A ** ON A/C NOT FOR ALL
B. Put the aircraft back to its initial configuration.
   (1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
[Rev.10 from 2021] 2026.03.31 23:45:57 UTC
"Aviabrain" 2025