Alpine Ai-NET CHA-1214 Service Manual page 43

8. Disassembly and assembly methods for drive unit
assembly
(1) Remove spring rod (Refer to Figure 6.)
As the chassis tray assembly side is tightly calked,
care will be necessary when removing.
(2) Desolder solder (A) on switch tray P.C. Board. (Refer
to Figure 6-1.)
When desoldering the solder (A), take care not to
damage the flexible P.C. Board.
(3) Remove 1 screw @ and remove spring clamper.
(Refer to Figure 6-1.)
(4) Remove 1 washer (D) and remove bracket clamper
while turning it in direction of the arrow at the center
of illustration. With the bracket clamper removed,
table clamper and spring (C) can be also removed
together. (Refer to Figure 6)
(5) Remove 2 screws ® and remove guide tray side,
arm switch, switch tray P.C. Board in this order.
(Refer to Figure 6-1.)
(6) Remove 2 screws ©, @, bracket motor assembly
and 1 hook (A). (Refer to Figures 7-1, 7-2.)
And the drive unit assembly will be removed from the
chassis tray assembly.
< Assembly notes >
@ Parts for chassis tray assembly side (bracket
clamper, spring clamper, table clamper, guide tray
side, arm switch, switch tray P.C. Board) should be
assembled in order shown below.
| Set the switch tray P.C. Board, arm switch, guide
tray side in this order and secure with screws ®.
ll Set the bracket clamper to the table clamper.
Ili Set the spring clamper and secure with screw ©.
IV Load the spring (C) and fix the washer (D).
When soldering the flexible P.C. Board to the switch
tray P.C. Board, take care of following 3 points.
1 Do not give any damage to the flexible P.C.
Board.
When using a soldering iron, keep soldering iron
tip temperature within 270+20°C and make the
soldering is carried out within 3 sec.
Perform the flexible P.C. Board forming as
shown in Figures 6-1, 6-2 and set it correctly.
After loading of the spring rod, calk the tabs of the
chassis tray assembly side.
Take care on position of the spring disc hold. (Refer
to Figure 6.)
Do not use the washers used once when
assembling.
When mounting washer, take care the washer is not
deformed or damaged
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