TROUBLESHOOTING AND DIAGNOSTICS
DIAGNOSTICS
6 - 4
3. When main board and operator interface board tests are com-
pleted, press any key to continue. The third diagnostics screen (I/O
tests) will appear. The
READ AI
test will be highlighted. From this
point, choose to run any, all, or none of the remaining six tests. To run
any of the remaining tests, press or until the test desired is
highlighted. Press
. If any of the tests show
FAIL
, refer to Table
for corrective action.
4. Once tests are completed, press any soft key and a soft key sub-
menu appears. Press the key below your selection.
WARNING
The output tests could cause process upsets if the unit is con-
nected to the process while the tests are performed. Some pro-
cess upsets can lead to injury and equipment damage. The last
six tests on the diagnostics screen verify the I/O operation
without configuration interaction.
AVERTISSEMENT
Les tests de sortie pourraient causer des dérangements au
procédé si le contrôleur est raccordé au procédé au moment
où ces tests sont effectués. Certains dérangements du procédé
pourraient causer des blessures ou des dommages à l’équipe-
ment. Les six (6) tests indiqués à l’écran des diagnostiques
vérifient le fonctionnement des entrées/sorties sans l’interac-
tion de la configuration.
L1: BYP
L2: BYP
DIAGS
READ AI
SET AO
READ DI
SET DO
BYP AO
KEYPAD
PRESS ANY KEY
TO CONTINUE
Input/Output Tests
Read analog input. Same as a monitor function.
User can set AO, 0 to 100%.
Read digital input. Same as monitor function.
User can set DO, 0 or 1.
Tests operator interface board. User can set
AO, 0 to 100%.
Checks functions of all pushbuttons and keys.
SET
MENU
PROC
DSPL
MAIN
MENU
▲
t
SEL
3
Table 6-1. Diagnostic Tests
Board or
Test
Display
Description
Checking Procedures
Corrective Action
Main board IBL [FAIL]
Check ribbon connector cable connections
between operator interface board and main
board.
If cable connections are bad,
replace ribbon connector (refer
to
SRAM [FAIL]
None.
Replace main board (refer to
).
NVRAM [FAIL]
Replace NVRAM (U10, U11).
If test still fails, replace main
board. Refer to
board and NVRAM or ROM
replacement instructions.
ROM [FAIL]
Replace ROM (U12).