JVC HR-S9850EK, Service Manual

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2-12
2. How to install
(1) Align the notch of the loading arm gear (take-up side) to
the projection B of the loading arm gear shaft and slip it
over. 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 base
assembly (take-up side) and tighten the screw (B).
(3) Install the loading arm gear (supply side) so that the guide
mark 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 base
assembly (supply side) and tighten the screw (A). (See
Fig.2-2-16a.)
Fig. 2-2-16b
Projection A
Loading arm gear shaft
Loading arm gear (take-up side)
Projection B
Fig. 2-2-15b
Idler arm assembly
pin
Take-up lever
Insert
R section
Guide hole of the
control plate guide
1.5mm hexagonal wrench
2.2.16 Loading arm gear (supply or take-up side) and
loading arm gear shaft
1. 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 from
the pole base assembly (take-up side). (See Fig.2-2-16a.)
Fig. 2-2-15c
Section A
Hole A
Section B
Hole B
Section C
Control plate
Pole base assembly
(supply side)
Press-
fit
Section B
Hole B
Section C
Tension arm assembly
shaft
Section D
Section D
Section A
Hole 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 the
rotary encoder guide and the section D of the loading arm
gear shaft while press-fit the pole base assmebly (sup-
ply side) as indicated by the arrow. It is important that
the 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. (See
Fig.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 so
that the notch of the loading arm gear (take-up side) is
in alignment with the projection of the loading arm gear
shaft and lift it.
Likewise, turn the loading arm counterclockwise so that
the notch is in alignment with the projection and remove
the loading arm gear (take-up side). (See Fig.2-2-16a and
Fig. 2-2-16b.)
(4) When removing the loading arm gear shaft, be sure of
first removing the screw retaining the drum assembly (on
the back side of the loading arm gear shaft). Then re-
move the screw (C) and remove the loading arm gear
shaft by sliding it.
Guide marks
Screw(A)
Screw(C)
Notch
Pole base assembly
(supply side) Pole base assembly
(take-up side)
Screw(B)
Torsion arm
Loading arm gear
(take-up side) Loading arm gear
(supply side)
Loading arm gear shaft