MODELS: LT-3280D/LT-3780D
4-2. Button switch is not effective.
Is the following harness connected correctly? � Between PWB-MAIN and PWBCONTROL (MC) YES NO When it pushes the button switch, is the signal below available at pins 2, 3, of MC ? 2, 3 : 3Vp-p only when switch is not pushed. Not 3V only when switch is pushed. (It depends on switch)
NO
Poor harness connection or defective cable.
Part on PWB-CONTROL is out of order.
YES IC700 (and peripheral circuits) are out of order.(PWB-MAIN)
