Nidek Medical CP-690, Service Manual

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4.4 The Projection Lamp does not Go On.
N
Is the voltage between the 1st and 2nd
pins of J2 connector on the BA01 board
within DC3.69 to 6.01 V? (when the
setting of SW2 is channel “2”.)
Y
Replace the BA01 board.
(See 5.2.1)
Is the voltage between the 1st and 2nd
pins of the J12 connector on the BA14
board within DC3.69 to 6.01 V? (when
the setting of SW2 is channel 2 and
LED cable is not connected.) Replace the BA14 board.
(See 5.2.3.)
N
Y
Replace the BA01 board.
(See 5.2.1)