(2)
AMM 20-41-02/201, Electrostatic Discharge Sensitive Devices
(3)
SSM 28-41-02
(4)
WDM 28-41-12
(5)
AIPC 28-41-02, Fig. 10
B.
Access
(1)
Location Zone 125 Area Below Forward Cargo Container Compartment, Left
(2)
Access Panel
125B Electronics Access Door
C.
Procedure
S 864-001
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
On the main power distribution panel, P6: 1) 6D5, FUEL QTY 1 2) 6D6, FUEL QTY 2
(b)
On the DC power distribution panel, P180: 1) 180M8, FUELING VALVE 2 2) 180M9, FUELING PWR - HOT BAT
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MAINTENANCE MANUAL
ELECTRONICS ACCESS DOOR,FUEL QUANTITY 125BPROCESSOR UNIT
SEE A
E6 RACK WINDOW
FWD
INPUT/OUTPUT
CARDS
REFUEL VALVE
RELAY CARD (REF) INDIVIDUAL FUEL
VTO QUANTITY CHANNEL HINGEDADJUSTMENT (IFQC) CARDS (REF)
CARD (REF) DOOR
LED
Y5CA13 Y5CA2Y5CA3
Y5CA4
Y5CA5Y5CA6Y5CA7Y5CA8Y5CA9Y5CA10
FUEL QUANTITY PROCESSOR UNIT
FWD
INDICATOR
LIGHT
FUEL QUANTITY PROCESSOR UNIT
(HINGED DOOR CLOSED)
A
HINGED
DOOR
CARD EQUIPMENT
NUMBER
(HINGED DOOR OPEN) IOC A (1) PRIMARY Y5CA002
IOC B (2) SECONDARY Y5CA003
A
Fuel Quantity Input/Output Cards
Figure 401
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3) 180C25, FUELING LTS PANEL 4) 180C26, FUELING LTS RECP
(c) On the power distribution center, P414: 1) 414F17, FUELING VALVE 2) 414F22, FUELING PWR
S 014-002
(2) Open the electronics access door, 125B, for access to the FQPU.
NOTE: The fuel quantity processor unit is immediately forward of
____
the electronics access door.
S 014-003
(3)
Open the door on the FQPU.
S 214-015
(4)
Make sure the LED indicator light on the IOC card is not on.
S 914-012
CAUTION: DO NOT TOUCH THE IOC CARD BEFORE YOU DO THE PROCEDURE FOR
_______ DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE IOC CARD.
(5)
Do the procedure for the devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).
(6)
Remove the applicable IOC card from the FQPU (AMM 20-11-22/401).
S 024-013
TASK 28-41-16-404-006
3. Input/Output Card Installation (Fig. 401)
______________________________
A. References
(1)
AMM 20-11-22/401, Rack-Mounted Electrical/Electronic Module
(2)
AMM 20-41-02/201, Electrostatic Sensitive Devices
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MAINTENANCE MANUAL
(3)
AMM 28-41-00/501, Fuel Quantity Indication System
(4)
SSM 28-41-02
(5)
WDM 28-41-12
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