2.....…..............…............…...........................................1
(f)
Make sure you connect connector D486 to the left pack valve.
(g)
Make sure you connect connector D490 to the right pack valve.
(h)
Put the L PACK and R PACK switches to the OFF position.
(i)
Make sure the ECS PACK LEFT and ECS PACK RIGHT show OFF on the CDU display.
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737-300/400/500MAINTENANCE MANUAL
S 285-124
(6) Do the Isolation Valve Test:
(a)
Make sure that the CDU display shows the FMCS ANALOG DISC 1/3 page.
(b)
Put the L PACK and R PACK switches on the Pilot's Forward Overhead Panel (P5) to the HIGH position.
(c)
Put the ISOLATION VALVE switch on the Pilot's Forward Overhead Panel (P5) to the CLOSE position.
(d)
Make sure the ISOL VALVE output on the CDU display shows CLOSE.
(e)
Put the ISOLATION VALVE switch in the OPEN position.
(f)
Make sure the ISOL VALVE output shows OPEN on the CDU display.
S 285-125
(7) Do the Anti-Ice Switch Test:
(a)
Make sure that the CDU display shows the FMCS ANALOG DISC 1/3 page.
(b)
Put the L PACK and R PACK switches on the Pilot's Forward Overhead Panel (P5) to the HIGH position.
(c)
Put the ENC ANTI-ICE 1 and ENC ANTI-ICE 2 switches on the Pilot's Forward Overhead Panel (P5) to the OFF position.
(d)
Put the WING ANTI-ICE switch on the Pilot's Forward Overhead Panel (P5) to the OFF position.
(e)
Make sure the outputs on the FMCS ANALOG DISC 1/3 page are the same as the outputs shown below.
NOTE: The table below shows the position of the ENGINE
____ ANTI-ICE 1 and ENGINE ANTI-ICE 2 switches and the related CDU display.
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737-300/400/500MAINTENANCE MANUAL
~............................................................................. |TEST | SWITCH | SWITCH | CDU DISPLAY | |STEP | NAME | POSITION | LEFT RIGHT | ...............................................................................
| 1 | ENGINE | ON | COWL A/ICE ON OFF |
| | ANTI-ICE | | |
| | 1 | | |
| | | | |
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