User Manual

Maintenance and Troubleshooting
Chapter 5
55
Figure 5.1
Troubleshooting
Flowchart
START
IF NECESSAR Y , DISABLE
I/O POWER, USE
EMERGENCY ST OP SWITCH
REPLACE MINI-PLC-2/15
PROCESSOR RELOAD PROGRAM
IF NECESSAR
Y AND RECHECK
CONTROLLER
REPLACE I/O POWER CABLE
RELOAD PROGRAM IF
NECESSAR
Y RECHECK CONTROLLER
REMOVE SYSTEM POWER
REPLACE POWER SUPPL Y
RELOAD PROGRAM IF
NECESSAR
Y AND RECHECK
CONTROLLER
CORRECT LINE-VOL TAGE
RECHECK CONTROLLER
D
C
B
A
YES
NO
YES
NO
YES
YES
NO
NO
NO
YES
NO
YES
YES
NO
10138-I
CONTROLLED IN RUN OR RUN/PROG
MODE OUTPUTS DO NOT BEHAVE AS
PROGRAMMED
IS
LINEVOLTAGE
WITHIN NORMAL
RANGE?
IS
RUN
INDICATOR
ON?
IS
PROCESSOR
INDICATOR
ON?
IS
MEMORY
INDICATOR
ON?
ARE
PWER SUPPLY
OUTPUT VOLTAGES
CORRECT?
ARE
VOLATAGES
THROUGH I/O
POWER CABLE
CORRECT?
IS
DC ON
INDICATOR
ON?