Hofmann geodyna 7600, Service Manual

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4.14 CHECK AND REPLACEMENT OF OPTOENCODER BOARD OF THE MAIN SHAFT
" : Medium and big Phillips screwdriver, scissors.
6 : 1h
i
: Defective optoencoder board may cause the following malfunctions:
1. The balancer shows error codes with module C10.
2. Machine shows E300
3. The wheel balancer shows 001021
TO CHECK THE OPTOENCODER BOARD
Ø Turn on the balancer.
Ø Check the encoder with service code C74, C54, C75
REPLACEMENT OF THE OPTOENCODER BOARD
Ø Turn the machine off.
Ø Disconnect power supply.
Ø Remove the weight tray.
Ø Disconnect the 10 Pin ribbon cable from the encoder PCB.
Ø Remove all dirt from the region where the Optoencoder is positioned, preferably with a moisturized cloth.
Ø Remove the phillip screw holding the encoder PCB to the shaft tube.
Ø Clean the encoder board lens.
Ø Clean the polygon ring
Ø
Clean the polygon ring with humid or dry cotton bud. Use only water .
Do not use alcohol glass cleaner, degreaser or any other
aggressive liquids: This kind of substances are too aggressive
for the polygonal ring.
NOTE: BE CAREFUL NOT TO LET FOREIGN DEBRIS FALL INSIDE
THE TUBE.
Ø Install the encoder board.
Ø Apply again the plastic protection immediately.
Ø Connect Connector X3 onto the Optoencoder.
SM HOF GEODYNA 7600 Rel.D