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2-2.
Capstan assembly
The unit employs 2 sets of capstan assemblies to drive a
capstan motor using 1 capstan belt.
Following figure shows a layout of capstan assemblies as
viewed from rear side of chassis with the bottom plate
removed.
Note : It is a difference between actuality and indicate of belt label to put on.
Put the belt on upper V groove in flywhee.
Capstan moter
A
Original
Transformer
2-2-1. Speed lag between original MD and
copy MD
In the CCP-1100SF, the speed in the copy MD is slower by
1 % than that in the original MD in order to prevent an
unrecorded portion that will otherwise be present due to
the fact that the copy tape is rewound faster than original
tape.
This speed lag is done with difference in diameter of
flywheels.
2-2-2. Kind and arrangement of capstan
assemblies
The kind of capstan assemblies are as shown below.
Original
Capstan(A) Assy
Copy
Capstan(B) Assy
CCP-1100SF
B
Copy
A-2109-010-C
A-2109-009-C
2-2-3. Identification and dimension of
capstan assemblies
Identification of capstan assemblies:
1. Capstan(A) assembly ...... Upper groove in flywheel
2. Capstan(B) assembly ...... No groove
Flywheel inner diameter (Unit : mm)
Capstan(A) assy
Dimension A
19.87
Dimension B
20.07
Note : Replace the capstan assembly with the same kind of capstan
assembly when replacement is necessary.
Also, engage the belt at the same position, otherwise the speed will
change.
Capstan (A)
Dimension A
Dimension B
2-2-4. When eliminating speed lag between
original and copy
To make a tape without speed lag, the CCP-1100SF must
be modified since there is a 1 % speed lag between original
MD and copy MD in the CCP-1100SF. Modification is
made by replacing the capstan(A) assy used for original
MD in the CCP-1100SF with capstan(B) assy.
Capstan(B) assy
20.00
20.00
Capstan (B)
Upper
groove
2-3
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