DC controller The DC controller controls the operational sequence of the product.
Figure 1-3 DC controller block diagram Solenoids Table 1-2 Solenoids Component abbreviation Component name SL1 Primary transfer roller disengagement solenoid SL2 Duplex reverse solenoid (HP Color LaserJet CP4525dn, HP Color LaserJet CP4025dn, and HP Color LaserJet CP4525xh only) SL3 Multipurpose-tray pickup solenoid SL4 Cassette pickup solenoid ENWW Engine-control system 5 Motor Solenoid High-voltage ITB unit power supply T Secondary transfer roller Print cartridge (Y/M/C/Bk) Motor High-voltage power supply D Fan interrupter Fuser Low-voltage AC input power supply Laser scanner unit DC controller Fan Motor Clutch Solen Switc Photo Senso LED Option Control panel ICB NVRAM Formatter