Service manual M500 N, M520, M525 Fault finding
Doc Code 10 665 751
4-3 08/2007 Gahe
Fault finding - M500 N, M520, M525
Diagnosis LED’s
Zoom/multifoc motor controller 10714356
LED 3LED 2LED 1
LED 1 green Watchdog - blinking with 2Hz,
indicates that the main program is
running.
LED 2 red
Enable zoom - “On” when the zoom
motor is driven or short-circuited
(damaged). “Off” when the motor is
set free.
LED 3 yellow
Enable multifoc - “On” when the
multifoc motor is driven or short-
circuited (damaged). “Off” when
the motor is set free.
LED 4 green
+5V-Powering - “On” when the
switching regulator is working.
LED 4
To Next Page
