In failure of troubleshooting in above ① and ②, check if any cold soldering or short circuit on PCB
and replace the PCB ASSY. For CONTROL PCB ASSY(I01-221-0103), replace it referring to
section A of 5. Disassembling and Assembling Procedure. For MAIN PCB ASSY (I01-221-0101),
replace it referring to section B of 5. Disassembling and Assembling Procedure.
Carry out assembly in reverse order of disassembly.