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156
Appendix B
Servicing
Rotary Control Shaft Encoder Replacement (X50SPR-SE)
There are two possible replacement parts for a broken shaft encoder:
Rotary control shaft encoder unit (X50SPR-SE) that must be soldered to the front circuit
board
Complete OLED display circuit board unit (170-100689Q00).
To replace a complete circuit board unit because of a broken shaft encoder, see
Display/Button Board Replacement (170-100689Q00)
broken shaft encoder separately, follow the steps below:
1
Remove the OLED display circuit board as described on page 154.
2
From the back side of the circuit board, de-solder the two mounting hole pegs and the five
through-hole pegs, using a solder sucker and wick
Through-hole pegs (2)
Mounting
pegs (2)
Figure B-14. De-soldering Encoder Pegs
3
From the front of the board, remove any remaining solder.
CAUTION! The traces on the board are fragile and may break if the connections are
not totally clear. Ensure all solder is gone before you remove the shaft encoder
from the board.
4
Remove the damaged rotary shaft encoder
on page 154. To replace a
(Figure
B-14).
Through-hole pegs (3)
(Figure
B-15).
OLED
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