- do a check of the current value with an ammeter (Ref. TASK 24-38-00-810-843).
(2) If the value of the discharge current is less than 1 ampere:
- replace the BAT-1 (2PB1), (Ref. AMM TASK 24-38-51-000-001) and (Ref. AMM TASK 24-38-51-400-001)
- wait at least 15 minutes and do the BITE test of the BCL1 given in Para. 4.C.
(a) If the BITE test gives the maintenance message CHECK HOT BUS 1 POWER CONSUMPTION:
- replace the BCL-1 (1PB1), (Ref. AMM TASK 24-38-34-000-001) and (Ref. AMM TASK 24-38-34-400-001).
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(b) If the BITE test gives the maintenance message TEST OK:
- make sure that after the subsequent flight, the maintenance message CHECK HOT BUS 1 POWER COSUMPTION does not appear.
1 If the maintenance message CHECK HOT BUS 1 POWER CONSUMPTION
_
appear:
- replace the BCL-1 (1PB1), (Ref. AMM TASK 24-38-34-000-001) and (Ref. AMM TASK 24-38-34-400-001).
B. Preparation for the test
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
C. Do this test to make sure that the system operates correctly
NOTE : Wait at least 15 minutes and do this BITE test of the BCL1.
____
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
On the ELEC panel 35VU:
- push the BAT 1 pushbutton switch.
1. On the center pedestal, on the MCDU:
- push the line key adjacent to the BCL indication.
2. On the MCDU:
- push the line key adjacent to the TEST indication.
5. Close-up
________On the ELEC panel 35VU:
- the OFF legend of the BAT 1 pushbutton switch goes off.
On the MCDU:
- the BCL page comes into view.
On the MCDU, on the BCL/TEST page:
- the TEST OK message comes into view.
A. Put the aircraft back to its initial configuration.
R (1) On the MCDU, push the line key adjacent to the RETURN indication until the MCDU MENU comes into view.
R R (2) Fully decrease the brightness of the MCDU screen (display off).
(3) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
TASK 24-38-00-810-835
Abnormal Power Consumption on the 28VDC HOT BUS (702PP)
1. Possible Causes
_______________
- BAT-2 (2PB2)
- BCL-2 (1PB2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-38-00-810-838 Incorrect Discharge of the Battery 2 AMM 24-38-34-000-001 Removal of the Battery Charge Limiter (BCL) (1PB1, 1PB2) AMM 24-38-34-400-001 Installation of the Battery Charge Limiter (BCL)
(1PB1, 1PB2) AMM 24-38-51-000-001 Removal of the Batteries (2PB1, 2PB2) AMM 24-38-51-400-001 Installation of the Batteries (2PB1, 2PB2) AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power AMM 31-32-00-860-004 Procedure to Get Access to the SYSTEM REPORT/TEST/ELEC Page 24-38-00-991-002 Fig. 202
3. Fault Confirmation
__________________
(Ref. Fig. 202/TASK 24-38-00-991-002)
A. Job Set-Up
(1) Aircraft Maintenance Configuration
(a) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(b) On the overhead panel, on the ELEC panel 35VU, make sure that the BAT2 pushbutton switch is pushed (the OFF legend is off).
R (c) Adjust the brightness of the MCDU screen.
R (d) On the MCDU, get the SYSTEM REPORT/TEST/ELEC page (Ref. AMM TASK 31-32-00-860-004).
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BAT2 - Ammeter Installation
Figure 202/TASK 24-38-00-991-002
「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 ∞∞24-38-00∞∞∞∞∞∞∞∞∞∞Page 253
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