JVC HM-DH30000U Service Manual

Also see for HM-DH30000U - D-VHS HDTV Digital Recorder: Instructions Service manual

Contents

2-122. How to install(1) Align the notch of the loading arm gear (take-up side) tothe projection B of the loading arm gear shaft and slip itover. Then rotate it clockwise for alignment with the pro-jection A and slip it down to the bottom. (See Fig.2-2-16b.)(2) Then turn the loading arm gear (take-up side)counterclockwise. Hang the torsion arm on the pole baseassembly (take-up side) and tighten the screw (B).(3) Install the loading arm gear (supply side) so that the guidemark of the loading arm gear (take-up side) is in align-ment with the guide mark of the loading arm gear (sup-ply side). Then hang the torsion arm on the pole baseassembly (supply side) and tighten the screw (A). (SeeFig.2-2-16a.)Fig. 2-2-16bProjection A Loading arm gear shaftLoading arm gear (take-up side)Projection BFig. 2-2-15bIdler arm assemblypinTake-up leverInsertR sectionGuide hole of thecontrol plate guide1.5mm hexagonal wrench2.2.16 Loading arm gear (supply or take-up side) andloading arm gear shaft1. How to remove(1) Remove the loading arm gear (supply side) by loosen-ing the screw (A). (See Fig. 2-2-16a.)(2) Remove the screw (B) and remove the torsion arm fromthe pole base assembly (take-up side). (See Fig.2-2-16a.)Fig. 2-2-15cSection AHole ASection BHole BSection C Control platePole base assembly(supply side)Press-fitSection BHole BSection C Tension arm assemblyshaftSection D Section DSection AHole A(3) Install the control plate so that the section A of the load-ing arm gear shaft fits into the hole (A) of the control plate,the section B of the control plate guide into the hole (B),and the control plate comes under the section C of therotary encoder guide and the section D of the loading armgear shaft while press-fit the pole base assmebly (sup-ply side) as indicated by the arrow. It is important thatthe tension arm assembly shaft is positioned closer to-ward you than the control plate. (See Fig.2-2-15c.)(4) Make sure that the mark E of the control plate is in align-ment with the mark of the loading arm gear shaft. (SeeFig.2-2-15c.)(5) Pull off the hexagonal wrench for positioning.Fig. 2-2-16a(3) Turn the loading arm gear (take-up side) clockwise sothat the notch of the loading arm gear (take-up side) isin alignment with the projection of the loading arm gearshaft and lift it.Likewise, turn the loading arm counterclockwise so thatthe notch is in alignment with the projection and removethe loading arm gear (take-up side). (See Fig.2-2-16a andFig. 2-2-16b.)(4) When removing the loading arm gear shaft, be sure offirst removing the screw retaining the drum assembly (onthe back side of the loading arm gear shaft). Then re-move the screw (C) and remove the loading arm gearshaft by sliding it.Guide marksScrew(A)Screw(C)NotchPole base assembly(supply side)Pole base assembly(take-up side)Screw(B)Torsion armLoading arm gear(take-up side)Loading arm gear(supply side) Loading arm gear shaftwww.freeservicemanuals.info29/11/2016Published in Heiloo Holland