Mitsubishi Q170MCPU User Manual page 150

6 INSPECTION AND MAINTENANCE
Error-occurrence description
"POWER" LED turns off
" ." does not flash in the first digit of
7-segment LED
"A00" displays on 7-segment LED
"AL" "L01" displays on 7-segment LED
"AL" "A1"
Motion LED
CPU area
"BT " displays on 7-segment LED
" . . ." displays on 7-segment LED
Servo amplifier does not start
"AL" "S01" displays on 7-segment LED
"MODE" LED does not turn on
"MODE" LED is flickering
"RUN" LED turns off
PLC
"RUN" LED is flickering
CPU area
"ERR." LED turns on/is flickering
"USER" LED turns on
"BAT. " LED (Yellow) turns on
(1) Troubleshooting flowchart
The followings show the contents of the troubles classified into a variety of
groups according to the types of events.
" " displays on 7-segment
(a) "Flowchart for when "POWER" LED turns off"
(b) "Flowchart for when "
7-segment LED"
(c) "Flowchart for when "A00" displays on 7-segment LED"
(d) "Flowchart for when "AL"
LED"
(e) "Flowchart for when "AL"
7-segment LED"
(f) "Flowchart for when "BT " displays on 7-segment LED"
(g) "Flowchart for when " . . ." displays on 7-segment LED"
(h) "Flowchart for when servo amplifier does not start"
(i) "Flowchart for when "AL"
LED"
(j) "Flowchart for when "MODE" LED does not turn on."
(k) "Flowchart for when "MODE" LED is flickering."
(l) "Flowchart for when "RUN" LED turns off."
(m) "When "RUN" LED is flickering."
(n) "Flowchart for when "ERR." LED turns on/is flickering."
(o) "When "USER" LED turns on."
(p) "When "BAT. LED turns on (yellow)."
."
6 - 15
." does not flash in the first digit of
"L01" displays on 7-segment
"A1" " " displays on
"S01" displays on 7-segment