7200 TROUBLESHOOTING
E - 4
3.0 7200 ACU Power-Up Failures
3.1 No Audible Beep at Power-Up
If an audible beep is not heard upon power up of the ACU, check the following:
1. Verify that power is available at the unit.
2. Check the fuse in the power entry module.
3. Verify that proper voltage/frequency has been selected at power input on the
back of the unit.
3.2 Display Shows Blinking Cursor Only
If only a blinking cursor appears in the upper left corner of the screen:
1. Open the lid and check serial connection from the rear panel, connector TB6,
to the top right serial port on the display driver board.
2. With lid open, turn on power and observe the light sequence on the CPU card.
The status of the lights should be as follows:
a. D1, HALT: always green
b. D4, RESET: red, then green
3. If the lighting sequence is as listed in steps 2a and 2b, check crimps for good
connections on the power supply.
4. If the lighting sequence is not as listed in steps 2a and 2b:
a. Verify rotary switch settings:
1.) S2 should be set to 0-3, wherever current firmware is stored
2.) S3 should be set to 0
b. Verify dipswitch settings:
1.) S6 should be set to ALL OFF (UP), except pos. 8
2.) S4 should be set to ALL OFF (UP)
c. Eject the board and reinsert it.
d. Contact VertexRSI for support.
3.3 CPU boot-up failure
If a problem during boot-up occurs, or the following message is displayed: “24
System test in progress…..”, an error has occurred within the boot process.
Perform the following, depending on which version of firmware is currently
installed:
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