Ricoh SP 8400DN Field Service Manual page 1147

Ricoh a3 size black and white laser printer.

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Remove the HVPS [A].

NEVER touch the areas outlined in red in the photos below, to prevent electric shock caused by residual

A residual charge of about 100V-400V remains in the AC circuits on the PSU board for several months

even when the board has been removed from the machine after turning off the machine power and

unplugging the power cord.

The procedure to discharge residual charge from the machine by unplugging the power cord from the

AC wall outlet and pressing the main power switch works only for the DC circuits on this board.

4.Replacement and Adjustment

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