(b)  
the yellow UNSCHED STAB TRIM light is off

 (c)  
the UNSCHED STAB TRIM message is not shown on the upper EICAS display unit.

 S 985-124
 (17)
 Push the autopilot wheel disconnect switch twice to disengage the autopilot and cancel the alerts.

 S 985-125

 (18)
 Put the vertical speed dial to 0000.

 H. Test Unscheduled Trim Interface
 S 985-126
 (1)  
Operate the control wheel trim switches to put the stabilizer to approximately six units of trim.

 S 865-159

 (2)  
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Make sure that the STAB TRIM levers on the control stand panel, P10, are in the neutral position.

 S 865-160

 (3)  
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Make sure that the ALTERNATE STAB TRIM switches on the control stand panel, P10, are in the neutral position.

 S 285-128

 (4)  
Make sure that the yellow UNSCHED STAB TRIM light on the overhead panel, P5, is off.

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 S 985-206
 (5)  GUN 051; Put the A/P ENGAGE L switch on the AFCS mode control panel in the CMD position.
 S 985-209
 (6)  GUN 001-050, 052-999; Push the L CMD button on the AFCS mode control panel.

 S 865-161
 (7)  
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Move the STAB TRIM levers forward.

 S 865-162

 (8)  
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Move the ALTERNATE STAB TRIM switches forward.

 S 285-134

 (9)  
Make sure that the yellow UNSCHED STAB TRIM light is on.

 S 285-135

 (10)
 Make sure that the UNSCHD STAB TRIM message is shown on the upper EICAS display unit.

 S 865-163

 (11)
 AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Move the STAB TRIM levers back to the neutral position.

 S 865-164

 (12)
 AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Move the ALTERNATE STAB TRIM switches back to the neutral position.

 S 285-137

 (13)
 Make sure that the UNSCHED STAB TRIM light and message are off.

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MAINTENANCE MANUAL

 S 985-138
 (14)
 Push the autopilot wheel disconnect switch twice to disengage the autopilot and cancel the alerts.

 S 985-139

 (15)
 Put the computer select switch on the EICAS display select panel in the L position.

 S 985-212

 (16)
 GUN 051; Put the A/P ENGAGE R switch on the AFCS mode control panel in the CMD position.

 S 985-215

 (17)
 GUN 001-005, 052-999; Push the R CMD button on the AFCS mode control panel.

 S 865-165

 (18)
 AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Move the STAB TRIM levers aft.

 S 865-166

 (19)
 AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Move the ALTERNATE STAB TRIM switches aft.

 S 285-151

 (20)
 Make sure that the yellow UNSCHED STAB TRIM light is on.

 S 215-178

 (21)
 Make sure that the UNSCHD STAB TRIM message is shown on the upper EICAS display unit.

 S 865-167

 (22)
 AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Return the STAB TRIM levers to the neutral position.

 S 865-168

 (23)
 AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Let the ALTERNATE STAB TRIM switches return to the neutral position.

 (24)
 Make sure that the UNSCHED STAB TRIM light and message are off.
　
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