Suzuki S-1800H80/180, Technical Manual

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LED does not light even if the Hoist is lowered.
Is Limit Switch for LED in the Hoist
portion normal?
Remove the Connector J3 in
Monitor Control PCB and check if
there is short circuit in the
connector No.1 and No.3 you pulled
or not.
Limit Switch for LED.
Disconnection
Control PCB
Display does not change even if the tilt has been changed.
The depth readout is abnormal when Bottom Scanning is selected.
Check 15V is present at J2-
No.10 in Motor Drive PCB.
Power Supply PCB in Hull Unit portion
Are the waveforms of J2-No.6,
No.7, No.8, and No.9 normal?
Soundome
Are the waveforms of J1-No.5,
No.6, No.7, and No.8 normal?
Motor Drive PCB
Hull Unit portion Main PCB