Upper cover (M651) ......................................................................................................................... 139 Before proceeding, remove the following assemblies ................................................ 139 Remove the upper cover (M651) .................................................................................. 139 Reinstall the upper cover (M651) ................................................................................. 142 Front face-down cover and right-front upper cover (M651) .........................................................
143 Before proceeding, remove the following assemblies ................................................ 143 Remove the front face-down cover and right-front upper cover ............................... 143 Intermediate cover assembly (M680) ............................................................................................. 145 Before proceeding, remove the following assemblies ................................................ 145 Remove the intermediate cover assembly (M680) ...................................................... 145 Right-rear cover ..............................................................................................................................
146 Before proceeding, remove the following assemblies ................................................ 146 Remove the right-rear cover ........................................................................................ 146 Internal assemblies ........................................................................................................................................... 147 IPTU (M680) ..................................................................................................................................... 147 Before proceeding, remove the following assemblies ................................................
147 Remove the IPTU .......................................................................................................... 147 Cassette feed guide ........................................................................................................................ 150 Reinstall the cassette feed guide ................................................................................. 151 Secondary transfer assembly ......................................................................................................... 152 Tray 1 separation pad .....................................................................................................................
154 Reinstall the secondary transfer assembly ................................................................. 153 Before proceeding, remove the following assemblies ................................................ 154 Remove the Tray 1 separation pad .............................................................................. 154 Registration density (RD) sensor assembly ................................................................................... 157 Remove the RD sensor assembly ................................................................................. 157 Before proceeding, remove the following assemblies ................................................
157 Registration assembly .................................................................................................................... 161 Before proceeding, remove the following assemblies ................................................ 161 Remove the registration assembly .............................................................................. 161 Paper-delivery fan (M651) .............................................................................................................. 166 Install a replacement registration assembly ...............................................................
165 Before proceeding, remove the following assemblies ................................................ 166 Remove the paper-delivery fan (M651) ....................................................................... 166 Paper-delivery fan (M680) .............................................................................................................. 168 Before proceeding, remove the following assemblies ................................................ 168 Remove the paper-delivery fan (M680) .......................................................................
168 Residual-toner-feed motor ............................................................................................................ 169 Before proceeding, remove the following assemblies ................................................ 169 Remove the residual-toner-feed motor ...................................................................... 169 Residual-toner transfer assembly ................................................................................................. 171 viii ENWW