Phaser 6121MFP Service Manual 8-5Service Parts DisassemblyFastener TypesThe following table lists the primary types of Posi-Drive screws used to assemblethe printer. The procedures provide dimensional specifications for screws beingremoved.CautionUse care when installing self-tapping screws in plastic. To properly start thescrew in plastic, turn the screw counter-clockwise in the hole until you feel thescrew engage the threads, then tighten as usual. Improperly aligning or overtightening the screw can result in damage to previously tapped threads.Always use the correct type and size screw. Using the wrong screw candamage tapped holes. Do not use excessive force to remove or install either ascrew or a printer part.Posi-Drive Screw Types Used in this ProductType Application Shape CharacteristicsSelf-tapping,plastic1. Silver colored.2. Screw thread is coarsecompared to metalscrew.3. Screw tip is thin.Sheet Metal,silver1. Silver colored.2. Diameter is uniform.Sheet Metal,with flange1. Silver colored.2. Screw has a flange.3. Diameter is uniform.Sheet Metal,silver with lockwasher1. Silver colored.2. Includes a toothedwasher.3. Diameter is uniform.4. Used for groundingterminals.Parts etc.PlasticCoarseParts etc. SheetMetalParts etc.SheetMetalParts etc. SheetMetal
