HP — HP LaserJet M9059 MFP service manual

Toner level detection ....................................................................................... 138 Pickup and feed system ................................................................................................................... 139 Media-size detection ........................................................................................................ 139 Media-level detection ....................................................................................................... 139 Multifeed prevention ........................................................................................................

139 Transparency media detection ........................................................................................ 139 Fuser-wrapping jam detection ......................................................................................... 139 Jam detection .................................................................................................................. 140 Tray 1 ............................................................................................................................................... 145 Tray 1 driver PCA ............................................................................................................

145 Tray 1 power supply ........................................................................................................ 145 Tray 1 sequence of operation .......................................................................................... 145 Tray 1 pickup and feed .................................................................................................... 146 Tray 1 jam detection ........................................................................................................ 146 Tray 4 ...............................................................................................................................................

147 Tray 4 driver PCA ............................................................................................................ 147 Tray 4 power supply ........................................................................................................ 147 Tray 4 sequence of operation .......................................................................................... 147 Tray 4 pickup and feed .................................................................................................... 148 Tray 4 media level and media size detection ...................................................................

148 Tray 4 jam detection ........................................................................................................ 148 6 Removal and replacement Removal and replacement strategy .................................................................................................. 150 Repair notices .................................................................................................................................. 150 Electrostatic discharge .....................................................................................................................

151 Required tools .................................................................................................................................. 151 Product orientation ........................................................................................................................... 152 Front and right side orientation ........................................................................................ 152 Back and left side orientation ........................................................................................... 153 Scanner assembly covers ................................................................................................................

154 Control panel ................................................................................................................... 154 Reinstall the control panel ............................................................................... 155 ADF feeder cover ............................................................................................ 155 Reinstall the ADF feeder cover ....................................................................... 156 ADF feeder cover handle .................................................................................................

157 ADF back cover ............................................................................................................... 157 ADF front cover ................................................................................................................ 159 Lower delivery roller cover ............................................................................................... 159 Reinstall the delivery roller cover .................................................................... 160 White board cover ............................................................................................................

160 Copy processor/connect board ........................................................................................ 161 Reinstall the copy processor/connect board ................................................... 162 ENWW vii