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 a)  Adapter cables - 50 ohm, unshielded, with polarized BNC plug (Amphenol 14625) to connect to the Lo-Z receptacles of the test unit and polarized BNC jack (Kings LC-33-02) to connect to the tee connector, two are necessary.
 NOTE: Shielded cables on Lo-Z connections can
____ cause EMI problems.
 b) Adapter cable - 50 ohm, with BNC plug (Amphenol 31-202) to connect to the Hi-Z receptacle on the test unit and a BNC receptacle (AMP 330885) to connect to the tee connector. 5) Ground cable
References
 (1)
AMM 24-22-00/201, Manual Control

 (2)
AMM 27-81-00/201, Leading Edge Flaps and Slats

 (3)
AMM 28-23-00/201, Defueling

 (4)
AMM 28-41-81/401, Fuel Summation UnitAccess

 (1)  
Location Zones 101 Control Cabin, Left 217 Right Main Wheel Well 303 Left Wing Inboard Leading Edge 402 Right Wing Outboard Leading Edge 403 Right Wing Inboard Leading Edge

 (2)  
Access Panels 6540 Refueling Station Access Door

Prepare for the Test
 S 865-033-002
 (1) Supply the electrical power (AMM 24-22-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 AIRPLANES WITH ANALOG FUEL QUANTITY ú  28-41-00
 INDICATORS ú CONFIG 2 ú 02A Page 517 (SIMMONDS SYSTEM TESTER) ú Jul 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-067-002
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  Extend the leading edge flaps (AMM 27-81-00/201).
 S 495-036-002
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO
_______ INSTALL THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT INSTALL THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  
Install the locks on the leading edge flaps (AMM 27-81-00/201).

 S 655-037-002

 (4)  
Remove all the fuel from the fuel tank, and the fuel in the sumps (AMM 28-23-00/201).

 NOTE: If you adjust the system for only one tank, you can move the
____
 fuel into the other tanks.

 S 865-038-002
 (5)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  P6 Main Power Distribution Panel
 1) EP GND FUELING
 2) QTY

 (6)  
Remove the fuel quantity indicator from the pilots' panel.

 S 035-040-002

 (7)  
Disconnect the electrical connector from the rear of the fuel quantity indicator.

 S 035-039-002
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 AIRPLANES WITH ANALOG FUEL QUANTITY ú  28-41-00
 INDICATORS ú CONFIG 2 ú 02A Page 518 (SIMMONDS SYSTEM TESTER) ú Jul 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 485-041-002
 (8)  Connect the test equipment (Fig. 504).
 (a)  
Connect the test harness to the airplane wire bundle.

 (b)  
Connect the test harness to the system test unit.

 S 015-065-002
 (9)  Do this procedure: "Fuel Summation Unit Removal"
 (AMM 28-41-81/401).

 E. Test Procedure
 S 975-042-002
 (1)  Measure the empty tank resistances.
 (a)  
Set the power switch on the system test unit to ON.

 (b)  
Set the FUNCTION SEL switch to MEG (not SELF TEST MEG) (PSD40-1) or set the FUNCT switch to MEASURE EXT (PSD60-1).

 (c)  
Set the FUNCTION MEASURE switch (PSD40-1) or the SELECT switch (PSD60-1) to LOZ-HIZ.

 (d)  
Read the total resistance for the tank units.

 (e)  
Make sure the resistance shown on the system test unit is larger than 250 megohms.

 (f)  
Set the FUNCTION MEASURE switch (PSD40-1) or the SELECT switch (PSD60-1) to COMP-HIZ.

 (g)  
Read the total resistance for the compensator.
　
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