61-101-00802.EF2 (REV. G) CH. 2
January 7, 2015 Page 27 of 44
D. Test
(1) Set test set ON/OFF switch to ON.
(2) Press and hold PRESS TO READ CAP (pF) pushbutton while
adjusting CAP SIM (pF) control knob to obtain a test set reading
according to the following table.
Aircraft Add For Full Simulator (pF)
1900/1900C,
UA and UB
104.0
1900C/1900D,
UC and UE
135.9
Table 8 Add for Full
(3) Release the pushbutton.
(4) Connect the aircraft battery.
(5) Close the circuit breakers.
Caution: Do not tap bezel of instrument to vibrate. To remove
friction, gently tap adjacent panel or rear housing of
indicator before taking readings.
(6) Verify the indicator reads slightly below zero (approximately one
needle width).
(7) If pointer position is not acceptable, use the EMP 1/E 1 or E/EMP
adjustment on rear of indicator to obtain the correct pointer position.
(8) Rotate the TEST FUNCTION switch to ADD CAP.
(9) Verify the indicator reads 1400 lbs (UA and UB) or 1600 lbs (UC and
UE).
(10) If the indicator does not give the appropriate reading, use the F/FULL
adjustment located on the rear of the indicator to obtain correct
reading.
Note: AUX calibration is applicable only for 1900C/1900D (UC
and UE). If testing 1900/1900C (UA and UB) skip to step
(16).
(11) Rotate the TEST FUNCTION switch to CAP SIM CAL (NORM SYS).
(12) Set the aircraft fuel panel select switch to AUX/NAC and hold.
(13) Verify the indicator shows zero lbs
(14) If pointer position is not acceptable, use the EMP 2/E 2 adjustment
located at rear of the indicator to obtain a desirable pointer position.
(15) Repeat steps (2) thru (14) until an accurate calibration is obtained.
(16) Set the test set ON/OFF switch to OFF.
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