How To Remove The Major Parts <Vhs Section; Disassembly Flow Chart; Disassembly/Assembly Method <Vhs Section - JVC SR-VS30U Service Manual

1.5 HOW TO REMOVE THE MAJOR PARTS <VHS section>

1.5.1 Disassembly flow chart

This flowchart shows the disassembly procedure for the ex-
terior parts and electrical parts.
Basically, reverse this procedure when assembling them.
However, it is required to remove the common section parts
as far as [1] "Top cover Bracket" and [2] "Front panel as-
sembly" in advance. (See section 1.4.)
[1] Drum assembly
[2] Mechanism assembly
[3] Main board assembly
1.5.2 DIsassembly/assembly method <VHS section>
Step/
Part name Fig. No.
Loc No.
[1] Drum assembly V1
(Inertia plate)
(Roller arm assy)
(Cleaner assy)
[2] Mechanism V2
assembly
[3] Main board V3
assembly
<Note 1a>
When attaching or removing the FPC, take care not to dis-
connect any of the wires.
<Note 1b>
• When attaching the FPC, be sure to connect it in the cor-
rect orientation.
• When removing or attaching the WIRE/FPC, refer to "1.7
CONNECTION"(page 1-8) at same time.
<Note 2a>
When it is required to remove the screws ((S7a), (S7b),
(S7c) and (S7d)) retaining the Mechanism assembly, please
refer to the "Procedures for Lowering the Cassette holder
assembly"(See on page 1-4).
<Note 2b>
• When reattaching the Mechanism assembly to the Main
board assembly, take care not to damage the sensors on
the Main board assembly (D3001: LED, Q3002: Start sen-
sor, Q3003: End sensor, S3002: S cassette switch).
• When reattaching the Mechanism assembly to the Main
board assembly, CN2 of LOADING MOTOR BOARD
should not be floated.
<Note 2c>
• When removing the Mechanism assembly only, unhook the
two spacers connecting it with the Main board assembly
with pliers from the back side of the Main board assembly
first, and then remove the Mechanism assembly.
1-4
Point Note
CN1(WR6a), <Note 1a,1b>
CON1(WR6b),
(S6a), (S6b), (S6c)
4(L6a)
(P6a), (L6b)
(L6c)
(S7a), (S7b), (S7c), <Note 1b,
(S7d), 2(L7a), 2a, 2b, 2c>
CN1(WR7a)
(S8a), 6(L8a), <Note 1b>
CN701(WR8a),
CN2601(WR8b),
CN3014(WR8c)
Procedures for Lowering the Cassette holder assembly
As the mechanism of this unit is integrated with the Housing
assembly, the holder must be lowered and the two screws un-
screwed when removing the Mechanism assembly.
Fig. 1
Turn the loading motor pulley in the direction as indicated by
Fig.2. As both A and B levers are lodged twice, push the
levers in the direction as indicated by Fig.3 to release them.
When pushing the levers, do it in the order of A , B , B , A .
When the holder has been lowered, turn the pulley until the
cassette holder is securely in place without allowing any up/
down movement.
Procedures for Lowering the Cassette holder assembly
Note: When installing the Drum assembly, secure the screws
(S6a to S6c) in the order of a, b, c.
Inertia plate
(S6a)
(L6a)
(P6a)
(L6b)
Roller arm
assy
[1]
Drum
assembly
Fig. V1
Fig. 2
Fig. 3
(S6c)
(WR6b)
<Note 1b>
CON1
(WR6a)
(S6b)
<Note 1a,1b>
Cleaner assy
(L6c)
CN1