Check Battery Capacity

TASK 33-51-00-710-003-A
Check Battery Capacity

WARNING: IF THE RESULT(S) OF THE EPSU-BATTERY CAPACITY TEST IS (ARE) UNSATISFACTORY, REPLACE THE APPLICABLE EPSU BATTERY/BATTERIES. DO NOT DO THE CAPACITY TEST AGAIN AFTER THE FAILURE OCCURRED FOR THE FIRST TIME. IF YOU DO THE TEST AGAIN, A BATTERY EXPLOSION CAN OCCUR. THIS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO THE COMPONENTS.

CAUTION: WE RECOMMEND THAT YOU DO THIS TEST IN THE SHOP. IF YOU DO IT ON THE AIRCRAFT, THE TEST CAN CONTINUE DURING 24 HOURS AND THERE IS A RISK THAT IT WILL BE STOPPED BEFORE ITS END.

NOTE: If the aircraft goes back to operation after a long parking period, connect the aircraft to the ground power supply for a minimum of 30 minutes before you do the EPSU battery capacity-test.

ZONE: 200
FIN: 10WL
FIN: 11WL
FIN: 12WL
FIN: 13WL
FIN: 14WL ** ON A/C NOT FOR ALL
FIN: 15WL ** ON A/C NOT FOR ALL
FIN: 16WL ** ON A/C NOT FOR ALL
FIN: 17WL ** ON A/C NOT FOR ALL

1. Reason for the Job
Refer to the MPD TASK: 335100-03
CHECK BATTERY CAPACITY

NOTE: As an alternative, you can do the task with the replacement of the batteries (Ref AMM 335100-710-003-A01).

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
200	UPPER HALF FUSELAGE

C. Referenced Information

REFERENCE	DESIGNATION
TASK 23-73-00-861-001-A	Energize the Cabin Intercommunication Data System (CIDS)
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 31-32-00-860-003-A	Procedure to Get Access to the SYSTEM REPORT/TEST/COM Page
TASK 33-51-00-710-003-A-01	Check Battery Capacity

3. Job Set-up

CAUTION: DO NOT USE THE TEACH-IN PROCEDURE TO CLEAR EPSU FAILURE MESSAGES. THE TEACH-IN PROCEDURE IS NOT A SYSTEM RESET. IT CAN CHANGE THE EMERGENCY LIGHT CONFIGURATION AND CAUSE HIDDEN FAILURES.

NOTE: The teach-in procedure of the EPSUs measures and keeps the load values that are related to each EPSU. The EPSU controller refers to these load values when the BITE test of the emergency lighting system operates. Thus, it is necessary that the emergency lights of the related EPSUs operate correctly during the teach-in procedure.

NOTE: If the capacity test of the EPSU battery is unsatisfactory, it is recommended that you replace the unserviceable battery. It is not necessary to do the capacity test for the new battery.

Subtask 33-51-00-860-080-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) Get access to the SYSTEM/REPORT/TEST COM Page: (Ref. AMM TASK 31-32-00-860-003).
(3) Make sure that the Cabin Intercommunication Data System (CIDS) is energized (Ref. AMM TASK 23-73-00-861-001).
(4) On Forward Attendant Panel (FAP) 120RH in the cabin make sure that the pushbutton-switch EMER is released (position out/indicator light is off).
(5) On overhead panel 25VU in the cockpit make sure that:

Switch 4WL EMER EXIT LT is in the OFF position.
Switch 190RH NO SMOKING is in the OFF position.
Indicator 5WL EMER EXIT LT OFF is on.

(6) Put a WARNING NOTICE(S) in position at the MCDU to tell persons not to use the MCDU after the test start.

Subtask 33-51-00-860-080-D ** 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) Get access to the SYSTEM/REPORT/TEST COM Page: (Ref. AMM TASK 31-32-00-860-003).
(3) Make sure that the Cabin Intercommunication Data System (CIDS) is energized (Ref. AMM TASK 23-73-00-861-001).
(4) On Flight Attendant Panel (FAP) 120RH in the cabin make sure that the pushbutton-switch EMER is released (position out/indicator light is off).
(5) On overhead panel 25VU in the cockpit make sure that:

Switch 4WL EMER EXIT LT is in the OFF position.
Switch 190RH NO SMOKING is in the OFF position.
Indicator 5WL EMER EXIT LT OFF is on.

(6) Put a WARNING NOTICE(S) in position at the MCDU to tell persons not to use the MCDU after the test start.

Subtask 33-51-00-860-080-E ** 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 procedure to get access to the SYSTEM/REPORT/TEST COM Page: (Ref. AMM TASK 31-32-00-860-003).
(3) Make sure that the Cabin Intercommunication Data System (CIDS) is energized (Ref. AMM TASK 23-73-00-861-001).
(4) In the cabin on Flight Attendant Panel (FAP) 120RH, make sure that the EMER button is released (position out/indicator light is off).
(5) In the cockpit on overhead panel 25VU, make sure that:

EMER EXIT LT switch 4WL is in the OFF position.
EXIT switch 190RH is in the OFF position.
EMER EXIT LT OFF indicator 5WL is on.

(6) Put a WARNING NOTICE(S) in position at the MCDU to tell persons not to use the MCDU after the test is started.

Subtask 33-51-00-860-080-F ** ON A/C NOT FOR ALL

EMER EXIT LT switch 4WL is in the OFF position.
No PED switch 190RH is in the OFF position.
EMER EXIT LT OFF indicator 5WL is on.

(6) Put a WARNING NOTICE(S) in position at the MCDU to tell persons not to use the MCDU after the test is started.

Subtask 33-51-00-865-052-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	2WL	H06
49VU	LIGHTING/EMER LT/CABIN	1WL	H05
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CABIN	2WL	H04
49VU	LIGHTING/EMER LT/CABIN	1WL	H03
** ON A/C ALL
122VU	LIGHTING/CABIN/EMER/LT	3WL	V07

4. Procedure
Subtask 33-51-00-710-052-B ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT THE CABIN TEMPERATURE IS BETWEEN 10 AND 30 DEG. C (50 TO 86 DEG. F) TO DO THIS TEST. WE RECOMMEND TO DECREASE THE TEMPERATURE TO 25 DEG. C (77 DEG. F.). IF YOU DO NOT OBEY THIS INSTRUCTION, THE TEST RESULT CAN BE INCORRECT AND AN EXPLOSION OF THE BATTERY CAN OCCUR. THERE IS A RISK OF INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.

A. Check of the Battery Capacity

NOTE: It is necessary that the aircraft power supply stays on during this test.

NOTE: The maximum time for the battery capacity check is 23 hours and 50 minutes.

(1) Do this test:

ACTION	RESULT
1.On Programming and Test Panel (PTP) 110RH:	On PTP 110RH:
Push the membrane switch DSPL ON.	The CIDS menu is shown.
Push the line select key SYST TEST.	The SYST TEST menu is shown.
Push CONT until the EMER LIGHT BATTERY display is shown.
Push the line select key EMER LIGHT BATTERY.	The ENTER ACCESS CODE page is shown.
Enter this user code: 3351.
Push the line select key ENTER.	The EMER BATTERY TEST page and the PUSH BAT KEY display are shown.
Push the membrane switch TEST EMER LIGHT/BAT for not less than 3 seconds.	The light of the BAT membrane switch comes on. On the PTP display, a clock is shown and shows the time used for the test.
	On PTP 110RH after approximately two hours (a maximum of four hours): The EMER BATTERY ATA 33-51-38 TEST OK status is shown. The BAT OK light comes on.
2.On PTP 110RH:	On PTP 110RH:
Push the line select key RET.	The EMER LIGHT BATTERY display is shown.
Push the line select key EMER LIGHT BATTERY.	The EMER BATTERY TEST page is shown.
Push the line select key BAT TEST RESET.	The SYST TEST menu is shown. The BAT OK light goes off. The light of the BAT membrane switch goes off.
Push the membrane switch DSPL ON.	The CIDS menu is shown.

Subtask 33-51-00-710-052-C ** ON A/C NOT FOR ALL

A. Operational Test
(1) If the EPSU system is defective, do not do the battery capacity test through the MCDU. Remove the battery for the capacity check (Ref. AMM TASK 33-51-00-710-003).

NOTE: If there is no LED emergency lighting or fluorescent-floor path markings installed, a maximum of 3 hours are necessary for the battery capacity test. When LED emergency lighting or fluorescent-floor path markings are installed, more than 3 hours are necessary for this test.
It is also necessary that the aircraft power supply stays on during the test. The batteries are discharged and charged during the test.

NOTE: The maximum time for the battery capacity check is 23 hours and 50 minutes.

NOTE: For the test result, it is necessary that the page CIDS/EPSU BAT CAP TEST is open on the MCDU during the test. It is not possible to get the test result through the menu page CIDS/EPSU BAT CAP TEST RESULT (CIDS fault).

(2) Do this test:

ACTION	RESULT
1.In the cockpit on the MCDU:	In the cockpit on the MCDU:
Push line select key CIDS 1.	The menu page CIDS 1 comes into view.
Push the line select key EPSU BAT CAP TEST.	The menu page EPSU BAT CAP TEST 1/2 comes into view.
Push the function key left/right-arrow.	The message IN PROGRESS 60S shows, then the menu page EPSU BAT CAP TEST 2/2 shows.
Make an entry of four digits 3351 with the alphanumeric keys.	In the scratchpad the user access code 3351 is shown. The < prompt in front of the message START TEST comes into view.
Push the line select key START TEST.	The message CONFIRM START OF TEST shows.
Push the line select key CONFIRM START OF TEST.	The message TEST IN PROGRESS 3HR shows, then the message TEST OK shows.
Push the line select key RETURN until the menu page MCDU MENU comes into view.

5. Close-up
Subtask 33-51-00-862-052-A

A. Put the aircraft back to the serviceable condition.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 00:57:05 UTC