Automatic Power Control (Apc) - Ricoh G176 Service Manual

Printing Process
After you replace the LD unit, adjust its position (see Replacement and Adjustment).
The thermistor next to the laser unit (not shown) checks the temperature inside the
machine. The machine automatically corrects the charge roller and transfer voltages for
this temperature.

Automatic Power Control (APC)

The LD control IC on the engine board automatically controls power for the laser diodes.
The laser diode power is adjusted in the factory.
Never touch the variable resistors on the LD unit in the field.
G176/G177/G176L 6-8 SM