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1-6-9. Cylinder Assembly Inspection and
Replacement
<Inspection>
1. Check if the tape transport surface on the lower
cylinder assembly are not damaged.
2. Check if the rotation of the upper cylinder assembly is
not abnormal.
When any abnormality is found according to the inspec-
tion procedures described above | and 2, replace the
cylinder assembly.
<Replacement>
1. Remove the ground brush assembly.
2. Remove the head cleaner. (Refer to item "1-6-14.
Head Cleaner Replacement.")
Remove the FPC (1) on the Preamplifier.
Remove three screws (2) and the cylinder holding
plate (3) and (4). (Refer to item "1-6-12. Cylinder
Holding Plate Replacement".)
. Remove the cylinder assembly (5).
. Remount the cylinder assembly (5) in the reverse
order of removal. Fix the cylinder pressing slightly in
the direction shown by the arrow (A) and the cylinder
holding plate (3) pressing slightly in the direction
shown by the arrow (B). (Tightening torque: 294 —
392 mNem (3 — 4 kgecm))
Head cleaner
Screw (2)
Cylinder
holding plate (4)
es
FPC (1)
Cylinder
holding plate (3)
Cylinder assembly (5)
Fig. 6-9-1
2-14
Note:
¢ When replacing, take much care not to touch the video
head directly and damage the cylinder.
7. Perform the tape transport adjustment.
1-6-10. Upper Cylinder Assembly Inspection and
Replacement
<Inspection>
1. Check if the video heads are damaged or worn out.
2. Check the video heads for clogging. (In case that the
clogging is not remedied after cleaning.)
<Replacement>
1. Remove the ground brush assembly.
2. Remove two securing screws (1) and remove the
upper cylinder assembly (2).
. Clean the new upper cylinder assembly (2) and the
flange (3) mounting surface with a cleaning kit.
. Align the head A (green) and the marker on the
rotary transformer PC board (4) and then mount the
upper cylinder assembly (Tightening torque : 294 —
392 mNem. (3 — 4kgecm)
Upper cylinder
assembly (2)
4
Flange (3)
Ground brush
Rotary transformer
PC board (4)
Fig. 6-10-1
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