(2)
Access Panels
6540 Refuel Station Access Door
B. Procedure
S 865-002-001
(1) Make sure these circuit breakers are closed:
(a) P6 Main Power Distribution Panel
1) QTY
2) EP GND FUELING
S 975-003-001
(2)
Write the values shown on the fuel quantity indicators.
S 715-004-001
(3)
Push and hold the QTY TEST switch adjacent to the fuel quantity indicators.
S 715-005-001
(4)
Make sure the fuel quantity indicators go to a value of zero and show ERR 4 on the display.
NOTE: ERR 4 will not show on MOD 4 or subsequent indicators
____ unless you hold the QTY TEST switch for more than 30 seconds. The indicator will show ERR 2 on the display if the indicator has error code 3 in its memory.
S 715-006-001
(5) Release the test switch and make sure the indicators do these steps in this sequence:
(a)
The indicators show all of the segments of the display for two seconds.
(b)
The fuel quantity indicators show no segments for two seconds.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH SIMMONDS DIGITAL FUEL ú
28-41-02 QUANTITY INDICATORS ú CONFIG 1
ú 01 Page 502 (GULL SYSTEM TESTER) ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(c)
The fuel quantity indicators show each of the error codes in the indicator memory for two seconds each.
(d)
The fuel quantity indicators show the tank capacity value.
(e)
The fuel quantity indicators show the value that you wrote before this step with a tolerance of 10 pounds (10 kilograms).
S 015-007-001
(6)
Open the access door, 6540, for the refuel control panel (P15).
S 975-008-001
(7)
Write the values shown on the refuel quantity indicators.
S 715-009-001
(8)
Set and hold the test switch to TEST GAGES.
S 715-010-001
(9)
Make sure the refuel quantity indicators do these steps in this sequence:
NOTE: The indicators will do these steps again until you
____
release the switch.
(a)
The refuel quantity indicators show all of the segments of the display for two seconds.
(b)
The refuel quantity indicators show no segments for two seconds.
(c)
The refuel quantity indicators show the tank capacity value for two seconds.
S 715-011-001
(10)
Release the test switch, and make sure the indicators show the values that you wrote before this step with a tolerance of |10 pounds (|10 kilograms).
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