Repair
Replacing Display Circuit Board
CAUTION
To avoid damaging circuit board, wear a grounding strap.
1.Remove User Interface cover. See page 16.
2.Disconnect wires from display board (410). FIG. 4.
404
413 | 418 | N |
| ||
407 |
|
|
406
405 
419
403
401
TI4755a
FIG. 4
3.Remove two screws (411).
4.Loosen setscrew (419) from knob (405) and remove knob assembly. Remove jam nut (N).
5.Remove and replace display board (410).
6.Reassemble. Refer to Electrical Schematic, page 22.
410
411
407
403
416 406
416
TI4756a
18 | 309909H |
