York 00497VIP manual Service

Models: 00497VIP

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Service

displayed, indicating the Serial Port is defective. A FAIL result would be indicative of a defective Microboard. The following is a description of each test.

COM 1 – Two tests are performed. Test data is sent from TX (J2-4) to RX (J2-3) at 9600 Baud and DTR (J2-5) is set to a Logic High level and read at DSR (J2-2). If any test fails, COM 1 tests are terminated.

COM 2 – Three tests are performed. Test data is sent from TX (J13-5) to RX (J13-3) at 19200 Baud. DTR (J13-7) is set to a Logic High and read at DSR (J13-2) & DCD (J13-1). RTS (J13-4) is set to a Logic High and read at CTS

(J13-6) & R1 (J13-8). If any test fails, COM 2 tests are terminated.

RS-485 (COM 3 & 4a) – Test data is sent from COM 3 RS-485 port to COM 4a RS-485 Port at 19200 Baud. Test data is then sent from COM 4a to COM 3 at the same rate. If either test fails, RS-485 tests are terminated.

COM 4b – Test data is sent from GTX (J2-7) to GRX (J2-6) at 19200 Baud.

3.After all desired tests have been performed, press the DIAGNOSTICS key to return to the MAIN DIAGNOSTICS Screen.

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York 00497VIP manual Service