change PS board,more often, and handling power modul
(TMP) is shorted.
① Check load handling power module (TMP),
and change if needed.
(When changing the power module, change the
power supply board, too.)
② Check harness between CN4R (power supply
board) and load handling power module (TMP),
and repair or change if needed.
③ Check CN8-3 (CPU board) and CN2R-3
(power supply board), and repair or change if
needed.
④ Check load handling motor and wiring, and
repair ore change if needed.
⑤ If no defect is found throughout the above
steps, change the power supply board, too.