System Maintenance Manual

Page 4-20 G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air
Revision G 190-00682-01
4.9 Slip Clutch Torque Check Procedure and Servo Current Display Check
Sections 4.9.1 thru 4.9.4 are applicable as follows:
• Section 4.9.1: Automatic test for GSM 85A or GSM 86 with SW version 0636.03 and subs
o Includes servo current check
• Section 4.9.2: Manual test for GSM 85A with SW version 0636.02 and earlier
o Includes servo current check
• Section 4.9.3: Fixture procedure for GSM 85A or GSM 86
• Section 4.9.4: Servo current check
o The servo current check can be accomplished as part of Section 4.9.1 or Section 4.9.2. If
neither of those sections is being performed, this section is required.
4.9.1 Automatic Slip Clutch Test Procedure (SW Version 0636.03 and Subs)
To ensure proper operation during this test, it is necessary to remove power from the aircraft prior to
starting.
1. Press and hold the enter button on PFD1, and restore power to the aircraft.
2. With PFD1 in Configuration Mode, verify the correct type of servo gearbox is configured for each
servo per Section 3.9.4.13. Step 9.
2. Go to the GFC Page Group and select the GFC STATUS page using the FMS knobs.
3. With the MFD in Normal Mode, press the red DISPLAY BACKUP button on the pilot’s GMA audio
panel to place the MFD in reversion mode.
Figure 4-4 GFC Status Page
NOTE
The displayed test results on the PFD are not stored in G1000 memory. If power
is cycled, these values will be lost. However, these test values are not lost by
changing configuration mode pages.