HP CM6040f Service Manual - Page 9

Switches ...145 Sensors ...146 Motors and fans 147 Fuser control ...149 Fuser temperature-control circuit 151 Fuser over-temperature protection 152 Fuser-failure detection 153 Fuser identification 153 Fuser-life detection 154 Relay-failure detection ...154 Low-voltage power supply 154 Overcurrent/overvoltage protection 155 Safety ...155 Voltage detection 155 Sleep (powersave) mode 155 High-voltage power supply 155 Laser/scanner system ...158 Image-formation system ...160 Image-formation process 161 Step 1: Pre-exposure 162 Step 2: Primary charging 162 Step 3: Laser-beam exposure 163 Step 4: Development 163 Step 5: Primary transfer 164 Step 6: Secondary transfer 164 Step 7: Separation 165 Step 8: Fusing 165 Step 9: ITB cleaning 166 Step 10: Drum cleaning 166 Print cartridge ...167 Imaging drum ...168 Developing roller engagement and disengagement 170 Intermediate transfer belt (ITB) unit 171 Primary-transfer-roller engagement and disengagement 171 ITB unit detection 173 Secondary-transfer-roller unit 175 Calibration ...175 Color-misregistration contol 176 Image stabilization control 177 Pickup, feed, and delivery system ...178 Pickup-and-feed unit ...181 Cassette pickup 183 Cassette paper-size and cassette-presence detection 183 Cassette lift operation 185 ENWW vii