FZ-103-3-2. Power PCB~=3-12FZ-103-4. Service Notes and Precaution• When servicing the Main PCB, cover the Power PCB with Power PCB Cover for your safety.• Be careful not to touch metal portion and parts of the power section to prevent high voltage.• When servicing with playing a CD, tape SW720 to be pressed as shown in figure below:SW720 TapeOpen/CloseSWltch■ Precaution for measuring waveformWhen you observe waveform at points '3 and '4 on the schematic diagram, measure It from bottom side of thebuilt-up unit. (See figure below.)Bottom Cabin,et□□□□□ nnooo on □□□ □□□□□ □□□□□D Do O 0•4CJ 000 0'30 0~0::------;~ VREF (approx. 2.5V)lControl Port3-13