Workstation 5 Field Service Guide
3-3
Workstation 5 Troubleshooting
Operational Troubleshooting
Operational Troubleshooting
This chapter describes the Workstation 5 boot sequence, provides
troubleshooting tips, voltage test points, and a POST error summary for the
Workstation 5 System Board, ABRD88.
Workstation 5 Boot Sequence
The following is a detailed description of the Workstation 5 boot process that
should assist in troubleshooting a unit that will not start.
1. Connect the AC Power Cable to the AC inlet at the rear of the Workstation.
If available, connect the workstation to a LAN. Press and release the power
button. The Operator LED should start flashing Blue once per second.
Does the Operator LED start flashing Blue with the Power button is
pressed?
o
If YES, proceed to Step 2.
o
If NO, see Checking the Power Supply on page 3-15.
2. The Operator LED should flash blue, and at almost the same time, the LCD
backlights should illuminate, followed by the BIOS splash screen with
MICROS logo.
Does the BIOS splash Screen appear on the LCD?
o
If YES, proceed to Step 3.
o
If NO, does the system board beeper sound more than once? This
indicates a POST failure. See page 3-14).
o
If NO, but the Operator LED is solid Blue. This condition would be
accompanied by other symptoms such as a blank screen, and no beeper.
Possible causes include:
o
Defective, corrupt or missing BIOS chip, U36. Install P/N
100111-011 or re-seat the device in the socket. See page 4-22. If the
symptoms remain, examine the socket for damage and replace if
necessary.
o
Defective System Board.
If the Operator LED remains solid Blue when you press the power
button, this is an indication that the processor is not executing
instructions. There are many possible causes for this including (in
addition to the BIOS chip and or socket) a missing clock or reset
signal, or a missing standby or working voltage.
