(6)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 862-032
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TASK 31-41-00-912-009
3. Maintenance Message Erase Procedure___________________________________
A. General
(1)
The EICAS computer keeps a record of some EICAS status and maintenance messages in non-volatile memory (NVM) because these messages have intermittent conditions or only show with special input logic. An example of special input logic is engine operation.
(2)
If a failure which caused an NVM message is removed, the message will still show until it is erased from the EICAS computer memory. This procedure gives steps to manually erase these messages.
(3)
NVM messages that have special input logic will not show after they are erased. If the failure condition continues, they still will not show until the special input logic again occurs.
B. References
(1) AMM 24-22-00/201, Electrical Power - Control
C. Access
(1) Location Zones
119/120 Main Equipment Center
211/212 Flight Compartment
D. Message Erase Procedure
S 862-010
(1)
Supply electrical power (AMM 24-22-00/201).
S 862-011
(2)
Make sure that these circuit breakers on the P11 panel are closed:
(a)
11J2, EICAS CMPTR LEFT
(b)
11J3, EICAS UPPER IND
or
11J3, EICAS UPPER DISPLAY
(c)
11J29, EICAS CMPTR RIGHT
(d)
11J30, EICAS LOWER IND
or
11J30, EICAS LOWER DISPLAY
(e)
11J31, EICAS DISPLAY SW
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(f) 11J32, EICAS PILOTS DSP
or 11J32, EICAS DISPLAY SELECT
S 912-012
(3) Do the steps that follow to erase an EICAS maintenance message:
(a)
Push the ECS MSG switch on the EICAS MAINT panel on the right side panel, P61, to see the ECS MSG page.
(b)
Make a record of all of the messages on the ECS MSG pages for trouble-shooting.
NOTE: Additional messages can show during trouble-shooting.
____ Ignore these messages.
(c)
Push the AUTO-EVENT READ switch.
(d)
Make sure that AUTO EVENT shows at the bottom of the lower display.
(e)
Push and hold the ERASE switch for 3 seconds.
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