When assembling this set after service, let the wires connected from loading motor to MAIN board through a notch of JACK board and clamp with a lead pin so that they are not caught in by the gear (table).
JACK board
gear (table)
DESTRUCTION OF IC DUE TO SHORTCIRCUIT (Fig. 4)
In removing or mounting the back panel or MAIN board with the power supplied, an accidental shortcircuit of heatsink to the power transformer could destroy the IC on heatsink.
