Hofmann Megaplan Service Manual megaline SSENCE
SSENCE 400/600
Page 12 of 52
2.2.6 Exchange of limiter switch (400M and 600)
Both cables for the limiter switch are inside the vertical column. To exchange one of the
switches the column must be dismounted:
- Lay down column and remove the support on bottom side. Now you can see the three plugs
of the motor connect cable.
- Unscrew defective limiter switch and remove the silicone cap.
- Unplug the connector of the defective limiter switch. (must be a three pin connector)
- When the upper switch is defective, install a cord to the plug, and pull out the cable with cord .
With the cord you can install the new switch more easily.
- After exchange and connect the switch, switch on machine (without computer) and test
function of the switch with a wrench or a screwdriver or another piece of iron. (red LED must
flash)
- If this is OK please mount back the support and test function with software.
2.2.7 Failure/wrong signals of the LED rings
The function of the LED ring is pending on:
- IR-LED board
- Cable
- LED ring
Please check cable no. 8 (or 7 for left side) for break. (Flat cable). Plug and unplug the
connectors of the cable a few times in order to avoid poor contact to the LED rings or to the
control board
The LEDs located on the ring can be tested for function using a diode tester (or also a buzzer).
Please note that the LED (as a purebred diode) passes electricity flow only in one direction.
So please check in both directions.
If there is no result and everything seems fine, it may be that the control board (Art.No.650
220) is defect.
