2-4-9 U25NAPMALIGNMENT PROCEDURES OF MECHANISMThe following procedures describe how to align theindividual gears and levers that make up the tapeloading/unloading mechanism. Since informationabout the state of the mechanism is provided to theSystem Control Circuit only through the Mode Switch,it is essential that the correct relationship betweenindividual gears and levers be maintained.All alignments are to be performed with the mech-anism in Eject mode, in the sequence given. Eachprocedure assumes that all previous procedures havebeen completed.IMPORTANT:If any one of these alignments is not performedproperly, even if off by only one tooth, the unit willunload or stop and it may result in damage to themechanical or electrical parts.Alignment points in Eject PositionAlignment 1Loading Arm, S and T AssemblyInstall Loading Arm S and T Assembly so that theirtriangle marks point to each other as shown in Fig.AL2.Alignment 2Mode GearKeeping the two triangles pointing at each other,install the Loading Arm T Assembly so that the lasttooth of the gear meets the most inside teeth of theMode Gear. See Fig. AL2.Alignment [a]Tape Guide AssemblyMeasurement of the screw must be as specified inFig. AL3.Alignment 1Alignment [a] can be done independently of anyother alignment.Alignment 2Top ViewAlignment 3Alignment [a]Bottom ViewFig. AL1Loading ArmT AssemblyTriangle Marks Loading ArmS AssemblyMode GearLast ToothAlignment 1Alignment 2Most inside teethof Mode GearFig. AL2This alignment can bedone independently ofany other alignment.3.25 – 0.1 mm0.128 – 0.004 inchScrewTape GuideAssemblyFig. AL3