S 865-004
(3) Make sure these circuit breakers are closed:
(a)
P6 Main Power Distribution Panel
1) 6E32, C IRS DISCONNECT
(b)
P7 Overhead Circuit Breaker Panel
1) 7F8, UPR EICAS
2) 7F9, EIU L
3) 7F10, EIU C
4) 7F11, EFIS CONT L
5) 7F12, ND L
6) 7F14, LWR EICAS
7) 7F15, EIU R
8) 7F16, EFIS CONT R
9) 7F17, ND R
S 865-194
CAUTION:_______SOME SWITCHES MUST BE PULLED AND THEN TURNED. IF YOU TRY TO TURN THESE SWITCHES BEFORE YOU PULL THEM, YOU CAN CAUSE DAMAGE TO THEM.
(4)
Set all of the switches on the IRS mode select unit (MSU) to the OFF position.
S 865-006
(5)
Set the INBD CRT switches on the captain's display transfer module (P1-3) to the NORM position.
S 865-061
(6)
Set the LWR CRT switches on the captain's display transfer module (P1-3) to the NORM position.
S 865-007
(7)
Set the INBD CRT switches on the first officer's display transfer module (P3-3) to the NORM position.
S 865-062
(8)
Set the LWR CRT switches on the first officer's display transfer module (P3-3) to the NORM position.
(9)
Set the NAV switch on the P1-1 panel to the L FMC position.
S 865-008
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S 865-009
(10)
Set the NAV switch on the P3-1 panel to the R FMC position.
S 865-263
(11)
Set the FMC switch on the P2-4 panel to the L position.
E. EIU Interface Test
S 865-070
CAUTION:_______SOME SWITCHES MUST BE PULLED AND THEN TURNED. IF YOU TRY TO TURN THESE SWITCHES BEFORE YOU PULL THEM, YOU CAN CAUSE DAMAGE TO THEM.
(1) Set all of the switches on the MSU to the NAV position.
(a) Make sure that after 20 seconds none of these messages comes into view on the main EICAS display: ~....................... | IRS ALIGN MODE L | | IRS ALIGN MODE C | | IRS ALIGN MODE R | 2.......................1
S 865-071
CAUTION:_______SOME SWITCHES MUST BE PULLED AND THEN TURNED. IF YOU TRY TO TURN THESE SWITCHES BEFORE YOU PULL THEM, YOU CAN CAUSE DAMAGE TO THEM.
(2)
Set all of the switches on the MSU to the OFF position.
S 865-195
(3)
Set the EIU SEL switch on the P2-4 panel to the L position.
S 865-072
(4)
Close the 6D7 IRS AC LEFT circuit breaker on the P6 Main Power Distribution Panel.
S 865-073
(5)
Open the 7F10 EIU C circuit breaker on the P7 Overhead Circuit Breaker Panel.
S 865-074
(6)
Open the 7F15 EIU R circuit breaker on the P7 Overhead Circuit breaker Panel.
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MAINTENANCE MANUAL
(7) S 865-075Set the IRS L mode switch on the MSU to the ATT position. (a) Make sure that the IRS ALIGN MODE L and >IRS DC LEFT messages come into view on the main EICAS display. 1) Make sure that the IRS ALIGN MODE L message goes out of view within 30 seconds.
(8) S 865-076Close the 7F10 EIU C circuit breaker on the P7 panel.
(9) S 865-077Set the EIU SEL switch on the P2-4 panel to the C position.
S 865-078
(10) Open the 7F9 EIU L circuit breaker on the P7 panel.
(a) Make sure that >IRS DC LEFT comes into view on the main EICAS display.
S 865-079
(11)
Close the 7F15 EIU R circuit breaker on the P7 panel.
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