Sony BVW-55 - Main Parts Replacement; Threading Motor Replacement

4-1
BVW-55 P2
Section 4
Main Parts Replacement
4-1. Threading Motor Replacement
Outline
Replacement
VH cleaner assembly removal
AT head assembly removal
Threading motor assembly removal
Threading motor replacement
Threading motor assembly installation
AT head assembly installation
VH cleaner assembly installation
Adjustment after replacement
AT head position adjustment
Precautions
. The threading motor can be replaced with the cassette compartment installed.
. The following new loading motor pulley is required when replacing the threading
motor.
Loading motor pulley: 3-611-492-01
Preparations
1. Put the unit into the unthreading end state.
2. Turn off the power.
3. Remove the upper frame.
(Refer to the maintenance manual Part 1, Section 1-6.)
Tools
. Torque screwdriver (3 kg.cm): J-6325-400-A
. Torque screwdriver bit (for M1.4): J-6325-110-A
. Torque screwdriver bit (for M2): J-6325-380-A
Replacement
1. VH cleaner assembly removal
Remove the VH cleaner assembly.
(Refer to Section 3-6.)
2. AT head assembly removal
Remove the AT head assembly.
(Refer to Section 3-15.)