Read Sharp DV-HR300H Service Manual online
14
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
Servicing training material (S1 writer mechanism)
1.
Main parts
Description
1)
Pickup
Reads/writes signals from/to discs.
2)
Motors
_Spindle
Rotates discs.
_Thread
Moves the pickup in the radial direction.
_Loading
Opens/closes the disc tray.
3)
Insulator
Reduces/blocks the vibration.
4)
Loader system
Up/down movement of the traverse, horizontal movement of the tray, casing
2.
Cleaning
1)
Lens
Wipe with a new cotton swab dampened with isopropyl alcohol, and then with a dry cloth.
2)
Turntable
Wipe with a new cotton swab dampened with isopropyl alcohol or water, and then with a dry
cloth.
3)
Tray
Wipe with a dry Dusper
∑
, cotton waste, etc., or one dampened with water.
4)
Clamper
Wipe with a Dusper
∑
or a new cotton swab dampened with isopropyl alcohol.
3.
Removing the tray
Insert the following jigs into the both sides of the tray. Remove the tray together with jigs.
4.
Defective discs
1)
Vibration while
The cause is the unbalance. (The standard varies from disc to disc.)
recording/
playing
playing
2)
Deformation
Not properly recorded/played.
(warpage, etc.)
3)
Dirt adhesion
Not properly recorded/played.
Material
Acrylic, etc.
7 mm
2.5 mm
100 mm
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