Essilor AKR 750 - Page 27

27
7-15 The fixation target LED for P.K. measurement does not light up.
The main causes when the fixation target LED for P.K. measurement does not
light up:
・ Failure of the P.K. LED board, the optical control board
・ Failure of the main control board
NO
Replace the optical unit ASSY.
NO
Replace the main control board.
OK
Does P.K. LED light up?
OK
YES
Does P.K LED light up?
OK
YES
P.K. LED does not light up.
Replace the optical control board.