(g)
Set the IRS R switch on the mode selector unit to the OFF position. 1) Make sure the PFD shows the ATT flag.
(h)
Set the IRS L, C, and R, switches on the IRS mode selector switch to the ATT position. 1) Make sure the PFD does not show the ATT flag.
S 735-831
(5) Do a test of the AIR DATA switch:
(a)
Set the AIR DATA switch to the R position.
1) Make sure the PFD does not show the SPD, or the ALT failure flags.
(b)
Open this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7A14, ADC R PWR
2) Make sure the PFD shows the SPD, and the ALT failure flags.
(c) Close this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7A14, ADC R PWR
2) Make sure the PFD does not show the SPD, or the ALT failure flags.
(d)
Set the AIR DATA switch to the L position.
1) Make sure the PFD does not show the SPD, or the ALT failure flags.
(e)
SIA 001-008 PRE-SB 34-2332;
Open this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7A11, ADC L PWR
(f)
SIA 009-999;
SIA 001-008 POST-SB 34-2332;
Open this circuit breaker:
1) P7 overhead circuit breaker panel
a) 7A10, ADC L PWR
2) Make sure the PFD shows the SPD, and the ALT failure flags.
(g) SIA 001-008 PRE-SB 34-2332;
Close this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7A11, ADC L PWR
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31-61-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(h) SIA 009-999;
SIA 001-008 POST-SB 34-2332;
Close this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7A10, ADC L PWR
2) Make sure the PFD does not show the SPD, or the ALT failure flags.
(i)
Set the AIR DATA switch to the C position.
1) Make sure the PFD does not show the SPD, or the ALT failure flags.
(j)
SIA 001-008 PRE-SB 34-2332;
Open this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7J14, ADC C PWR
(k)
SIA 009-999;
SIA 001-008 POST-SB 34-2332;
Open this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7J15, ADC C PWR
2) Make sure the PFD shows the SPD, and the ALT failure flags.
(l)
SIA 001-008 PRE-SB 34-2332;
Close this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7J14, ADC C PWR
(m)
SIA 009-999;
SIA 001-008 POST-SB 34-2332;
Close this circuit breaker:
1) P7 Overhead circuit breaker panel
a) 7J15, ADC C PWR
2) Make sure the PFD does not show the SPD, or the ALT failure flags.
(n)
Set the captain's AIR DATA switch to the L position.
(o)
Set the first officer's AIR DATA switch to the R position.
S 865-832
(6) Remove electrical power if it is not necessary (AMM 24-22-00/201).
M. Lighting Control Panel Test
S 735-833
(1) Do a test of the captain's lighting control panel:
(a) Adjust the OUTBD CRT control knob clockwise and counterclockwise. 1) Make sure the outboard IDU becomes brighter when you adjust
the knob clockwise. 2) Make sure the outboard IDU becomes dimmer when you adjust the knob counterclockwise.
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