Micromod Micro-DCI: 53IT5100A Indicator/Totalizer - Manual (Page 59)

5.4 ERROR AND HARDWARE MALFUNCTION MESSAGES
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Entire Display Flashes - The watchdog timer has timed out.
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CPU RAM FAILURE - IC U1 is bad.
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ROM CHKS FAILURE - IC U3 is bad.
5.5 RESETTING THE INSTRUMENT
The instrument can be reset either by cycling the power, or by carefully pressing the reset button
by inserting a thin wire, such as a paper clip, through the small hole in the upper left corner of the
front bezel. (See Figure 1-2 for the location of the reset hole.) When the instrument restarts, it im-
mediately checks to determine if any of the horizontal keypad push buttons are held pressed.
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If the 1 push button is held pressed during instrument reset, the instrument enters a factory
test mode. The test mode can be exited by resetting the instrument again using the thin
wire with no push buttons pressed.
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If the 2 push button is held pressed during instrument reset, the instrument database is set
to the defaulted values.
Section 5. Maintenance
5-3