TB 9-4920-362-24
(17) Set AC POWER switch to OFF.
(18) Connect cable W1 (supplied with TI) to connector J3 (rear of TI).
(19) Connect multimeter positive to pin 4 at other end of cable W1 marked to PITCH
TRIM ACTUATOR, and multimeter negative to SIG GRD.
(20) Set AC POWER switch to ON. Multimeter will indicate between 14.5 and 15.5 V dc.
(21) Repeat technique of (17), (19), and (20) above at connections listed in table 4.
Multimeter will indicate within limits specified.
Test instrument
Multimeter indications (V dc)
PITCH TRIM
Test points position
ACTUATOR connector
XDCR
Min
Max
Pin 7
---
+14.5
+15.5
Pin 8
---
-14.5
-15.5
Pin 5
---
-14.5
-15.5
Jumper pins 5 and 9
Trim position
-14.5
-15.5
Jumper pins 5 and 6
Stick input
-14.5
-15.5
(22) Set AC POWER switch to OFF and disconnect cable W1 from TI.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Connect cable W2 (supplied with TI) to connector J3 on TI.
(2) Connect multimeter mA terminal to pin 2 of SAS ACTUATOR end of cable W2,
and LOW terminal to pin 1.
(3) Set TRIM COIL SELECT switch to BOTH.
(4) Set AC POWER switch to ON.
(5) Adjust CURRENT CONTROL cw toward INCR until valve current meter
indicates -10.00 mA. If multimeter does not indicate between -9.50 and -10.50 mA, perform b below.
(6) Set AC POWER switch to OFF.
(7) Repeat technique of (2) through (6) above at connection and switch positions
listed in table 5. Multimeter will indicate within limits specified.