HP LaserJet 1100 Service Manual - Page 44
High-voltage power supply circuit
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This circuit also controls the image density by changing the primary AC voltage and the developing AC bias according to the print density setting. High voltage is disabled when the printer door is open. Figure 3-4 High-voltage power supply circuit C4224-90962 Engine Control Unit (ECU)/power system 47
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C4224-90962
Engine Control Unit (ECU)/power system
47
This circuit also controls the image density by changing the primary AC voltage and the
developing AC bias according to the print density setting.
High voltage is disabled when the printer door is open.
Figure 3-4
High-voltage power supply circuit