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(6) System Power-up Checks

Before proceeding, ensure that all pre power-up, mechanical, and electrical 
verifications have been successfully performed and documented using the 
Installation Checklist provided in "Installation Checklist" on page D-1.

(a) Preparation

The following tests serve primarily to confirm proper system power-up; therefore, 
they can be performed while the aircraft is still in the hanger. Ensure that a 
computer, configured as instructed on page 7, is available for testing.

(b) Initial Visual LED Verification

The system's Power ON and Fault LEDs provide a visual status indication on the 
HSD and HSD-X front panel and on the optional remote panel. 

Verify that the LEDs (at both locations) repeatedly cycle ON/OFF when 
power is applied.

Once the cycle has completed (~5 seconds), verify that the power LED 
remains illuminated.

(c) Initial Computer Power up Display

With the computer connected and configured to accept Maintenance Port data, 
power-up the HSD, and verify the initial power-up screen displays as shown in 
the example, Figure 4–32. The example provides a display using a Stand-Alone 
Mode installation.

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