System Maintenance Manual GTN 6XX/7XX Part 23 AML STC 190-01007-A1Page 7-6 Rev. 57.2 GMA 35The following steps must be performed when replacing a GMA 35 audio panel.1. Configure audio panel per Section 7.2.1.2. Perform ground check per Section 7.2.2.7.2.1 GMA 35 Audio Panel Configuration (GTN 7XX Only)7.2.1.1 GMA 35 Audio Panel SettingsIn configuration mode, touch the External Systems key (See Figure 3-8) followed by the Audio Panelkey. The Audio Panel page (Figure 7-1) will be displayed. Touch the Configure key to accessconfiguration settings for audio routing, volume, and miscellaneous options. See Figure 7-1. Touch Backto return to the Audio Panel page.Touch the Connected Radios key to set the status (Present or Not Present) of COM 2, COM 3, NAV 1,NAV 2, RCVR 3, RCVR 4, RCVR 5, TEL, Music 1, Music 2 and Marker Beacon. Touch Back to return tothe Audio Panel page.Review the GMA 35 audio panel configuration settings on the GTN and compare them against the GTNConfiguration Log. A copy of the GTN Configuration Log form may be found in the appendices of thisdocument. If any of the settings differ from the checkout log, update the settings to the correct value. Forinformation regarding individual settings, refer to the GTN 6XX/7XX AML STC Installation Manual.Figure 7-1. Audio Panel Page
