Replacing Optical Block Assembly - Sony CBK-HD01 Maintenance Manual

7-1-5. Replacing Optical Block Assembly

m
. The optical block assembly requires periodic replacement. Refer to "6-1. Periodic Check/Replacement
Parts List" for details.
. To prevent the possibility of damage to the optical block assembly in the drive by static electricity
charged in a human body or clothes, be sure to establish a ground before cleaning the drive assembly.
(Refer to Section 1-12-1.)
. The spindle motor and the actuator around the objective lens have intense magnetic circuits. Keep
magnetic substance away from these parts. If the magnetic force makes a metallic material such as a
screwdriver, reflection block and so on hit the actuator, the objective lens will be damaged. If the
magnetic substance is moved close to these parts, their characteristics may be changed.
. Life of flexible card wire and flexible board will be significantly shortened if they are folded. Flexible
board is easily cut. Be very careful not to fold them.
Fixtures
. Cleaning liquid
. Cleaning cloth
. Parallel pin (2 x 20) : 1
Removal
1. Remove the outside panel.
(Refer to Section 1-7-1.)
2. Remove the laser caution sheet.
(Refer to Section 1-6-2 step 2.)
3. Remove the corner block with adhesive sheet
and cover sheet.
(Refer to Section 7-1-1 step 3.)
4. Remove the SW guard assembly.
(Refer to Section 1-7-6.)
5. Remove the loader assembly.
(Refer to Section 7-1-1.)
6. Disconnect the flexible card wire from the
connector on the optical block assembly.
7. Remove the three screws from the OP
position sensor on the SE-858 board.
8. Move the OP position sensor and press the
die-casting part of the optical block assembly
until entire OP rack assembly is visible.
9. Insert the parallel pin into the hole of the OP
rack assembly.
PDW-700/V1 (E)
Optical block assembly
OP rack
assembly
Parallel pin
Optical block
assembly
OP position sensor
Screw (M1.7) Tightening : 10 x 10
Flexible card wire
Screw
(M1.7)
_2
±0.01 N.m {1.0 ±0.1 kgf.cm}
7-9