Sharp 14VT10X1, Service Manual

Page: 30 / 138

l
Before setting the drum, check that there are no
scratches or dust on the edge of the surface and
circumference of the disk.
2. Before setting the drum, check that there are no
scratches or dust on the internal surface and
edge of the surface of the upper drum.
3. On assembling these parts, insert the upper
drum onto the disk with care, so that the upper
drum is not tilted.
1.
2.
1.
2.
3.
4.
Put the unit in the cassette eject position.
Unplug the power cord.
Removal (Reverse the order in reassembly.)
Remove the
Remove the two D.D. rotor assembly setscrews
Pull out the rotor
Remove the three D. setscrews
4.
5.
When assembling these parts, do not allow dust
or dirt come between the disk and the upper
drum.
5. Remove the D.D. assembly
Notes
Do not use excessive force when driving in the
screws.
1.
2.
3.
4.
5.
When removing the rotor assembly or
assembly, use care not to hit the loading
relay gear.
Secure the D.D. rotor assembly so that the
installation positioning holes in the D.D. rotor
assembly and lower drum assembly match.
Be careful not to damage the upper drum or the
video head.
Be sure that the hall device and the D.D.
assembly are not damaged by the D.D. rotor
assembly or other parts.
After installation, adjust the playback switching
point.
1.
2.
3.
4.
Head Model]
Figure l-76.
Set the new drum.
Fasten the upper drum in place with the two
screws.
Solder the leads.
Note: Soldering should be performed quickly
and carefully without touching adjacent
patterns.
After replacement, be sure to check the tape
drive train adjustment (see page 26.) and the
following electric adjustments.
Adjustment of the playback switching point.
Checking and adjustment of the X-position
D.D. rotor
setscrew
Figure
32