Destructive Ram Test Error Screen; Non-Volatile Ram Error Screen; Checkerboard Pattern - Motorola R-2001D Operator's Manual

ADDENDUM
• SELF-TEST DISPLAYS
The self-test check may be executed at anytime during
system operation by executing special function 72.
The screens for the different self tests are outlined
below. If the self test is initiated by a power up, the
destructive RAM test is performed first. It erases
volatile memory, then stores sequential numbers into
RAM to check for any addressing problems in the
RAM. If an error is detected, the following screen is
displayed, see Figure 3-41. The operator may enter a "0"
if he wishes to proceed even if an error exists. If the
operator does not respond in a minute, the testing will
proceed even without an entry.
A NON-VOLATILE MEMORY FAULT
HAS BEEN DETECTED.
CONSULT THE OPERATOR'S MANUAL
(PN68P81069A66)
FOR
TROUBLESHOOTING INSTRUCTIONS
FOR CONTINUED OPERATION:
PRESS 0 TO CONTINUE
PRESS I TO RE-INITIALIZE
WITH FACTORY PRESETS
The Test Equipment Service Center should be consulted
to remedy the error.
FIGURE 3-42.
NON-VOLATILE RAM ERROR SCREEN
SELF TEST
After the non-volatile RAM test on power up, or if the
operator initiates a self test with a special function 72, a
checkerboard pattern is displayed on the screen, see Fig.
3-43.
This serves as a visual check of the display to
verify proper alignment of the CRT.
FIGURE 3-43. CHECKERBOARD PATTERN
XX XX
XX XX
XX XX
XX
SELF TEST
XX XX
XX XX
XX XX XX
XX XX XX
XX XX XX
XX XX
XX XX XX
XX XX XX XX
XX XX XX XX XX
XX XX XX XX XX
XX XX XX XX XX
xx xx
XX
xx
xx xx
XX XX
xx xx
XX XX XX
xx xx
XX
XX XX
XX XX XX
xx xx xx
XX XX XX
XX XX
XX XX XX
*ERROR IN VOLATILE RAM*
PUSH 0 TO CONTINUE
FIGURE 3-41.
DESTRUCTIVE RAM TEST ERROR SCREEN
After the destructive RAM test is performed on volatile
memory, then a non-volatile memory check is per-
formed to check to see that a bit pattern stored there has
not been corrupted. If it has, the following screen is
displayed, see Figure 3-42. If the operator wants to
reinitialize the non-volatile RAM, a "1" is entered.
If
the
existing non-volatile memory is desired, even though an
error has been detected, a "0" is entered.
If
the error per-
sists, the battery on the microprocessor board should be
checked. After a minute, the test will proceed as if a "0"
had been entered.
3-21