HP LaserJet M1522 MFP Series User Guide
Page 192
... Replace the print cartridge. See Paper and print media on page 63. 180 Chapter 12 Problem solve ENWW of background toner The media might be too low. Decrease the print-density setting throughHP ToolboxFX or the embedded Web server. The fuser temperature might not meet HP ...specifications. If you are using a non-HP print cartridge, no messages appear on page 155. Problem Cause Solution Vertical streaks or bands appear ...
... Replace the print cartridge. See Paper and print media on page 63. 180 Chapter 12 Problem solve ENWW of background toner The media might be too low. Decrease the print-density setting throughHP ToolboxFX or the embedded Web server. The fuser temperature might not meet HP ...specifications. If you are using a non-HP print cartridge, no messages appear on page 155. Problem Cause Solution Vertical streaks or bands appear ...
Service Manual
Page 16
...63 Figure 5-64 Figure 5-65 Figure 5-66 Figure 5-67 Figure 5-68 Figure 5-69 Figure 5-70 Figure 5-71 Figure 5-72 Figure 5-73 Replacing the ADF pickup roller assembly (5 of 6 87 Replacing the ADF pickup roller (6 of 6 87 Remove the ADF scanner glass (1 of 3 88 Remove the ADF scanner glass (2 of 3 88...-cartridge door (1 of 2 106 Remove the print-cartridge door (2 of 2 106 Remove the rear cover and fuser cover (1 of 3 107 Remove the rear cover and fuser cover (2 of 3 107 Remove the rear cover and fuser cover (3 of 3 108 Remove the front cover (1 of 4 109 Remove the front cover (2 of 4 ...
...63 Figure 5-64 Figure 5-65 Figure 5-66 Figure 5-67 Figure 5-68 Figure 5-69 Figure 5-70 Figure 5-71 Figure 5-72 Figure 5-73 Replacing the ADF pickup roller assembly (5 of 6 87 Replacing the ADF pickup roller (6 of 6 87 Remove the ADF scanner glass (1 of 3 88 Remove the ADF scanner glass (2 of 3 88...-cartridge door (1 of 2 106 Remove the print-cartridge door (2 of 2 106 Remove the rear cover and fuser cover (1 of 3 107 Remove the rear cover and fuser cover (2 of 3 107 Remove the rear cover and fuser cover (3 of 3 108 Remove the front cover (1 of 4 109 Remove the front cover (2 of 4 ...
Service Manual
Page 92
For this reason, the entire scanner assembly is opened outside of the product must be contaminated if it is replaceable only as an entire assembly replaces the scan module, the scan motor, and the cable. Figure 5-2 Parts removal order for the scanner and ADF ... assembly Print-cartridge door Front cover Scanner support-frame Engine controller unit Laser/scanner assembly Main motor Fuser assembly Pickup assembly Front cover Speaker assembly Formatter and fax card 74 Chapter 5 Removal and replacement ENWW Replacing the scanner assembly as a unit. Parts removal order Use the following...
For this reason, the entire scanner assembly is opened outside of the product must be contaminated if it is replaceable only as an entire assembly replaces the scan module, the scan motor, and the cable. Figure 5-2 Parts removal order for the scanner and ADF ... assembly Print-cartridge door Front cover Scanner support-frame Engine controller unit Laser/scanner assembly Main motor Fuser assembly Pickup assembly Front cover Speaker assembly Formatter and fax card 74 Chapter 5 Removal and replacement ENWW Replacing the scanner assembly as a unit. Parts removal order Use the following...
Service Manual
Page 126
Figure 5-61 Remove the rear cover and fuser cover (3 of the fuser cover away from the product, and remove the fuser cover. Rotate the bottom of 3) 108 Chapter 5 Removal and replacement ENWW 4.
Figure 5-61 Remove the rear cover and fuser cover (3 of the fuser cover away from the product, and remove the fuser cover. Rotate the bottom of 3) 108 Chapter 5 Removal and replacement ENWW 4.
Service Manual
Page 132
See Side covers on page 107. ● Front cover. See Rear cover and fuser cover on page 104. ● Rear cover and fuser cover. See Formatter and fax card on page 109. ● Speaker assembly. Figure 5-69 Remove the power supply (1 of 7) 1 2 114 Chapter 5 Removal and replacement ENWW See Front cover on page 113. 2. See Speaker assembly on page 111. ● Formatter and fax card. Disconnect one spade connector (callout 1) and remove three screws (callout 2). Remove the following assemblies: ● Right and left covers. Power supply 1.
See Side covers on page 107. ● Front cover. See Rear cover and fuser cover on page 104. ● Rear cover and fuser cover. See Formatter and fax card on page 109. ● Speaker assembly. Figure 5-69 Remove the power supply (1 of 7) 1 2 114 Chapter 5 Removal and replacement ENWW See Front cover on page 113. 2. See Speaker assembly on page 111. ● Formatter and fax card. Disconnect one spade connector (callout 1) and remove three screws (callout 2). Remove the following assemblies: ● Right and left covers. Power supply 1.
Service Manual
Page 136
... Front cover on page 90. ● Right and left cover. Figure 5-76 Remove the scanner support-frame (1 of 5) 1 2 118 Chapter 5 Removal and replacement ENWW Remove six screws (callout 1). CAUTION: Be careful not to drop any screws into the product. Scanner support-frame 1. See Side covers on page 107.... ● Front cover. See Rear cover and fuser cover on page 104. ● Print-cartridge door. Remove the following assemblies: ● Scanner assembly. NOTE: If you turn over the scanner...
... Front cover on page 90. ● Right and left cover. Figure 5-76 Remove the scanner support-frame (1 of 5) 1 2 118 Chapter 5 Removal and replacement ENWW Remove six screws (callout 1). CAUTION: Be careful not to drop any screws into the product. Scanner support-frame 1. See Side covers on page 107.... ● Front cover. See Rear cover and fuser cover on page 104. ● Print-cartridge door. Remove the following assemblies: ● Scanner assembly. NOTE: If you turn over the scanner...
Service Manual
Page 138
Figure 5-79 Remove the scanner support-frame (4 of 5) 6 5 120 Chapter 5 Removal and replacement ENWW If you are removing the scanner support-frame to gain access to the fuser, remove two screws (callout 5) and the chassis reinforcement bracket (callout 6). Figure 5-80 Remove the scanner support-frame (5 of 5) 6. Lift the scanner support-frame up and off of the product. 5.
Figure 5-79 Remove the scanner support-frame (4 of 5) 6 5 120 Chapter 5 Removal and replacement ENWW If you are removing the scanner support-frame to gain access to the fuser, remove two screws (callout 5) and the chassis reinforcement bracket (callout 6). Figure 5-80 Remove the scanner support-frame (5 of 5) 6. Lift the scanner support-frame up and off of the product. 5.
Service Manual
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.... See Scanner support-frame on page 109. ● Formatter and fax card. See Front cover on page 118. 2. See Rear cover and fuser cover on page 90. ● Right and left covers. Remove six screws (callout 1) and the power supply sheet-metal plate (callout 2). Remove the following ...assemblies: ● Scanner assembly. See Scanner assembly on page 107. ● Front cover. Figure 5-92 Remove the fuser (1 of 6) 2 1 2 128 Chapter 5 Removal and replacement ENWW See Side covers on page 104. ● Print-cartridge door...
.... See Scanner support-frame on page 109. ● Formatter and fax card. See Front cover on page 118. 2. See Rear cover and fuser cover on page 90. ● Right and left covers. Remove six screws (callout 1) and the power supply sheet-metal plate (callout 2). Remove the following ...assemblies: ● Scanner assembly. See Scanner assembly on page 107. ● Front cover. Figure 5-92 Remove the fuser (1 of 6) 2 1 2 128 Chapter 5 Removal and replacement ENWW See Side covers on page 104. ● Print-cartridge door...
Service Manual
Page 148
Figure 5-96 Remove the fuser assembly (5 of 6) 8 7 6. Release one tab (callout 7) and then remove the wire-harness retainer (callout 8). Remove three screws (callout 9). 5. Figure 5-95 Remove the fuser (4 of 6) 9 130 Chapter 5 Removal and replacement ENWW
Figure 5-96 Remove the fuser assembly (5 of 6) 8 7 6. Release one tab (callout 7) and then remove the wire-harness retainer (callout 8). Remove three screws (callout 9). 5. Figure 5-95 Remove the fuser (4 of 6) 9 130 Chapter 5 Removal and replacement ENWW
Service Manual
Page 149
Lift up the right side of 6) NOTE: When replacing the fuser assembly, be sure to the new one. 7. ENWW Product base 131 Figure 5-97 Remove the fuser assembly (6 of the fuser assembly to release it from the old fuser to transfer the delivery-sensor PCA from the chassis, and then remove the fuser assembly.
Lift up the right side of 6) NOTE: When replacing the fuser assembly, be sure to the new one. 7. ENWW Product base 131 Figure 5-97 Remove the fuser assembly (6 of the fuser assembly to release it from the old fuser to transfer the delivery-sensor PCA from the chassis, and then remove the fuser assembly.
Service Manual
Page 150
.... Figure 5-98 Remove the paper-pickup assembly (1 of 4) 1 132 Chapter 5 Removal and replacement ENWW Paper-pickup assembly 1. See Print-cartridge door on page 109. ● Formatter and fax card. See Front cover on page 106. ● Rear cover and fuser cover. Release one tab (callout 1). See Transfer roller on page 96. ●...
.... Figure 5-98 Remove the paper-pickup assembly (1 of 4) 1 132 Chapter 5 Removal and replacement ENWW Paper-pickup assembly 1. See Print-cartridge door on page 109. ● Formatter and fax card. See Front cover on page 106. ● Rear cover and fuser cover. Release one tab (callout 1). See Transfer roller on page 96. ●...
Service Manual
Page 178
.... Very dry (low humidity) conditions can increase the amount of background shading. Replace the print cartridge. The media might not meet HP specifications. Use media that the media meets specifications in the HP LaserJet Printer Family Print Media Guide. Clean the media guides and the paper path. ... of media on the leading edge of media on the product control panel or in the print path. Replace the print cartridge. The fuser temperature might not meet HP specifications. The toner smears easily when touched. Problem Cause Solution The amount of into a power strip....
.... Very dry (low humidity) conditions can increase the amount of background shading. Replace the print cartridge. The media might not meet HP specifications. Use media that the media meets specifications in the HP LaserJet Printer Family Print Media Guide. Clean the media guides and the paper path. ... of media on the leading edge of media on the product control panel or in the print path. Replace the print cartridge. The fuser temperature might not meet HP specifications. The toner smears easily when touched. Problem Cause Solution The amount of into a power strip....
Service Manual
Page 179
.... See Laser/scanner assembly on the page, install a new HP print cartridge. The media might not meet HP specifications. In... transparencies or light media. If so, replace the laser/scanner. appropriate media type is intended for laser printers. If the problem persists, select... a media type that is selected. cause paper curl. and that the appropriate media type is curled or wavy. ENWW Print problems 161 The paper path might be cleaned. Use a different paper, such as highquality paper that uses a lower fuser...
.... See Laser/scanner assembly on the page, install a new HP print cartridge. The media might not meet HP specifications. In... transparencies or light media. If so, replace the laser/scanner. appropriate media type is intended for laser printers. If the problem persists, select... a media type that is selected. cause paper curl. and that the appropriate media type is curled or wavy. ENWW Print problems 161 The paper path might be cleaned. Use a different paper, such as highquality paper that uses a lower fuser...
Service Manual
Page 198
... contacts check The high-voltage contacts in the product must have a good connection with the contacts on the ends of pins is measured, replace the fuser. 4. If they are dirty or corroded, clean the connection. NOTE: Normal resistance between both the product chassis and the ECU. 3. ...If no resistance is 370K ohms +/- 50K ohms at 20°C (68° F). 5. NOTE: Normal resistance is measured, replace the fuser. Check the print-cartridge contacts Remove the print cartridge and visually inspect the three connection points on the print cartridge to the media. 1. Heating...
... contacts check The high-voltage contacts in the product must have a good connection with the contacts on the ends of pins is measured, replace the fuser. 4. If they are dirty or corroded, clean the connection. NOTE: Normal resistance between both the product chassis and the ECU. 3. ...If no resistance is 370K ohms +/- 50K ohms at 20°C (68° F). 5. NOTE: Normal resistance is measured, replace the fuser. Check the print-cartridge contacts Remove the print cartridge and visually inspect the three connection points on the print cartridge to the media. 1. Heating...
Service Manual
Page 210
...defect, then use Table 6-3 Repetitive image defects on page 192 to determine which part needs to be replaced based on the measured distance between identical Dirty or damaged roller defects Solution 26.7 mm (1.05 inches) Primary charging roller... Replace the print cartridge. 29.1 mm (1.14 inches) Developing cylinder Replace the print cartridge. 39.3 mm (1.55 inches) Transfer roller Replace the transfer roller. 56.2 mm (2.21 inches) Pressure roller Replace the fuser. 56.5 mm (2.22 inches) Fuser film (fuser sleeve) Replace the fuser. 192 Chapter 6 ...
...defect, then use Table 6-3 Repetitive image defects on page 192 to determine which part needs to be replaced based on the measured distance between identical Dirty or damaged roller defects Solution 26.7 mm (1.05 inches) Primary charging roller... Replace the print cartridge. 29.1 mm (1.14 inches) Developing cylinder Replace the print cartridge. 39.3 mm (1.55 inches) Transfer roller Replace the transfer roller. 56.2 mm (2.21 inches) Pressure roller Replace the fuser. 56.5 mm (2.22 inches) Fuser film (fuser sleeve) Replace the fuser. 192 Chapter 6 ...
Service Manual
Page 279
... checklist 72 alert messages 140 Alerts tab HP ToolboxFX 38 alerts, setting up 38 answering machines, troubleshooting 175 archive print setting 189, 191 assemblies automatic document feeder (ADF), part numbers 218 control panel, replacing 82 drive-gear, removing 135 fuser, replacing 128 high-voltage connector, cleaning 181 laser/scanner, removing 121 link, removing 79 link...
... checklist 72 alert messages 140 Alerts tab HP ToolboxFX 38 alerts, setting up 38 answering machines, troubleshooting 175 archive print setting 189, 191 assemblies automatic document feeder (ADF), part numbers 218 control panel, replacing 82 drive-gear, removing 135 fuser, replacing 128 high-voltage connector, cleaning 181 laser/scanner, removing 121 link, removing 79 link...
Service Manual
Page 280
... printing 186 connectors ECU 194 fax card 196 formatter 195 control panel assembly, replacing 82 bezel part numbers 211 bezel, replacing 81 buttons, locating 6 cleaning page, printing 34 controls, locating 6 HP ToolboxFX system settings 44 locating 5 messages, troubleshooting 140 paper path, cleaning 34...copy-quality test 73 copying media, troubleshooting 167 quality, troubleshooting 166 size, troubleshooting 169 troubleshooting 169 covers front, removing 109 fuser, removing 107 part numbers 224 rear, removing 107 side, removing 104 creases, troubleshooting 162 crooked pages 161 curled media 161...
... printing 186 connectors ECU 194 fax card 196 formatter 195 control panel assembly, replacing 82 bezel part numbers 211 bezel, replacing 81 buttons, locating 6 cleaning page, printing 34 controls, locating 6 HP ToolboxFX system settings 44 locating 5 messages, troubleshooting 140 paper path, cleaning 34...copy-quality test 73 copying media, troubleshooting 167 quality, troubleshooting 166 size, troubleshooting 169 troubleshooting 169 covers front, removing 109 fuser, removing 107 part numbers 224 rear, removing 107 side, removing 104 creases, troubleshooting 162 crooked pages 161 curled media 161...
Service Manual
Page 282
Finnish laser safety statement 258 firmware updates 204 flash memory advantages, fax storage 67 fax pages, storage 67 flash memory, fax 67 flatbed lid, removing hinge-retainer ... 147 replacing 128 warranty 241 fuser assembly diagrams 200 fuser cover, removing 107 fuser sleeve locating 54 fuser unit locating 54 G Getting Started Guide 2 getting started guides, part numbers 214 glass, cleaning 30 gray background, troubleshooting 160 guidelines supplies, storing 26 guides, documentation 2 H half-self-test functional check 179 heating element check 180 Help tab, HP...
Finnish laser safety statement 258 firmware updates 204 flash memory advantages, fax storage 67 fax pages, storage 67 flash memory, fax 67 flatbed lid, removing hinge-retainer ... 147 replacing 128 warranty 241 fuser assembly diagrams 200 fuser cover, removing 107 fuser sleeve locating 54 fuser unit locating 54 G Getting Started Guide 2 getting started guides, part numbers 214 glass, cleaning 30 gray background, troubleshooting 160 guidelines supplies, storing 26 guides, documentation 2 H half-self-test functional check 179 heating element check 180 Help tab, HP...