Control Data Corporation CDC CC63X Hardware Maintenance Manual page 56

I
6-6
• Internal Modem - This test checks the modem assembly ROM,
UART, and modem board (modem loopback section) and
displays an appropriate error message plus the revision
level of the modem if a failure occurs (see figure 6-1).
The modem loopback section takes approximately 10 seconds
and is enabled/disabled by the third bit in the F4 field
of terminal installation parameters. If the loopback
section is to run with the rest of the internal modem
test, that parameter bit must be a 1.
• Serial Port Test Switch - If the TEST/NORMAL switch on the
dual serial interface board is in the TEST· position, the
message SERIAL PORT TEST SWITCH ENABLED will be displayed.
• Diagnostic ROM Pack - If a ROM PACK containing a
diagnostic is installed, a call will be made to the ROM
PACK diagnostic input. The ROM PACK diagnostic should
perform a ROM checksum, test any additional hardware used, (~~'
display any error messages, and display the ROM PACK name
and revision level. ' , ,-
• Revision Level and Copyright - On terminals having the
enhanced firmware, this section displays the revision
level of the firmware plus a Control Data copyright
message (see figure 6-1). This occurs at the end of the
test when the mode selection menu appears (the message and
menu do not appear if automatic mode selection is in
effect). On terminals that do not have the enhanced
~
firmware, this section displays only the revision level of
(~/
the firmware when a failure occurs.
• Completion of test
1
is signaled by the audible alarm
sounding at a soft, loud, then soft level. See Figure 6-1
for internal diagnostic failure format after test.
DISPIAYED 00
TERMmALS HAVING
ENHANCED FIRMWARE
Figure 6-1.
CHARACTER RAM FAIL
RAM FAIL XXXX xx xx~
GRAPHIC FAIL XXXX xx xx
----.::=_
X
I
s
REPRESENT VARYING VALUES
GRAPHIC FAIL
I
ROM FAIL xx xx xx xx
NVM ALTERED
NVM F A I L - - - - - - - - - - - - - - - DISPIAYED ON
COMM FAIL TERMmALS THAT
KEYBOARD FAIL DO NOT HAVE
TIMER FAIL ENHANCED FIRMWARE
BATTERY LOW
PORT A FAIL
PORT B FAIL
KBD CLOCK FAIL
EXT KBD LOOPBACK FAIL
TEST SWITCH ENABLED
mTERNAL MODEM CHECKSUM FAIL
INTERNAL MODEM UART FAIL
mTERNAL MODEM IDOPBACK FAIL
INTERNAL MODEM REV X.X
SERIAL PORT TEST SWITCH ENABLED
(DIAGNOSTIC ROM PACK MESSAGES HERE)
RES REV X.X
COPYRIGHT CONTROL DATA 198X
Display After Test
1
If Everything Failed
62940034 E