(g)
Push the RESET switch to erase the PSEU memory.
(h)
Push the VERIFY switch to do a test of the on-ground system.
(i)
Make sure the display shows the code 999 at the end of the test.
NOTE: The display will flash the code EEE when you erase the
____ memory. The display will flash the code CCC when you do the test. The test is approximately 2 minutes. When the test is completed, the code 999 is shown. All the panel indicators will go off 60 seconds after they come on.
When you do the test, the air/ground relays are cycled to the air mode then to the ground mode. This will cause some nuisance EICAS messages and flashing lights in the flight compartment. There can be some electrical power bus switching. This is normal.
(j) Write down then erase all the maintenance messages in the EICAS memory as follows: 1) Push the ECS/MSG switch on the EICAS maintenance panel,
P61. 2) Push the EVENT AUTO READ switch to show the EICAS
maintenance messages. 3) Write down all the messages that show. 4) Push the ERASE switch. 5) Push the EVENT AUTO READ switch again to show the second
page of the maintenance messages. 6) Write down the messages that show.
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7) Push the ERASE switch. Continue this procedure until no more show when you push the EVENT AUTO READ switch.
E. Put the Airplane Back to Its Usual Condition
S 864-016
(1)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 414-023
(2)
Close the access door, 119BL, for the main equipment center.
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PROXIMITY SWITCH ELECTRONICS UNIT CIRCUIT CARD - REMOVAL/INSTALLATION
_____________________________________________________________________
1. General________
A. This procedure contains three tasks. The first task removes the circuit cards from the proximity switch electronics unit (PSEU). The second task installs the circuit card in the PSEU. The third task does a test for the PSEU.
B. It is not necessary to remove the PSEU from the shelf to remove the circuit cards. The code which identifies the circuit card is the same as the number of the card slot of the PSEU (Fig. 401).
TASK 32-09-06-004-001
2. Remove the Circuit Card from the Proximity Switch Electronics Unit (Fig. 401)__________________________________________________________________
A. References
(1)
06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels
(2)
20-41-01/201, Electrostatic Sensitive Devices
(3)
32-09-02/201, Air/Ground Relays
B.
Access
(1)
Location Zones
119/120 Main Equipment Center
211/212 Control Cabin
(2)
Access Panels
119BL Main Equipment Center
C.
Prepare to Remove the Circuit Cards
S 044-020
WARNING: PREPARE THE SAFETY-SENSITIVE SYSTEMS FOR THE AIR MODE BEFORE
_______ YOU OPEN THE AIR/GROUND CIRCUIT BREAKERS. IN THE AIR MODE, MANY OF THE AIRPLANE SYSTEMS CAN OPERATE AND CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Prepare the safety-sensitive systems for air mode simulation (Ref 32-09-02/201).
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