Hook switch control ......................................................................................... 101 Ring detect ...................................................................................................... 102 Line current control ......................................................................................... 102 Billing- (metering-) tone filters ......................................................................... 102 Fax page storage in flash memory .................................................................................. 102 Stored fax pages .............................................................................................
102 Advantages of flash memory storage ............................................................. 102 6 Removal and replacement Removal and replacement strategy ................................................................................................. 106 General cautions during removal and replacement ......................................................... 106 Electrostatic discharge ..................................................................................................... 106 Required tools .................................................................................................................
107 Types of screws ............................................................................................................... 107 Service approach ............................................................................................................................. 108 Before performing service ................................................................................................ 108 After performing service ................................................................................................... 108 Post-service tests ............................................................................................................
109 Test 1 (print-quality test) ................................................................................. 109 Test 2 (copy-quality test) ................................................................................. 109 Test 3 (fax-quality test) .................................................................................... 109 Parts removal order ......................................................................................................... 110 Print cartridges .................................................................................................................................
111 Control-panel overlay (base model) ................................................................................................. 112 Control panel (base model) .............................................................................................................. 113 Control-panel bezel (fax/memory-card models) ............................................................................... 115 Control panel (fax/memory-card models) ......................................................................................... 116 Reinstall the control panel (fax/memory-card models) ....................................................
116 Paper-feed assemblies ..................................................................................................................... 118 Pickup roller (product base) ............................................................................................. 118 ADF pickup roller assembly ............................................................................................. 119 Separation roller (product base) ...................................................................................... 120 Transfer roller ..................................................................................................................
122 Paper-guide assembly ..................................................................................................... 124 External panels, covers, and doors .................................................................................................. 125 Front door and front-lower cover ..................................................................................... 125 Right cover ....................................................................................................................... 132 Left cover .........................................................................................................................
135 Front-right cover .............................................................................................................. 137 Reinstall the front-right cover .......................................................................... 138 Memory-card reader PCA (fax/memory-card models only) ............................................. 139 Card cover or blanking cover ........................................................................................... 140 Rear-side cover ............................................................................................................... 142 ENWW vii