
6. Replacing Parts
6-1-5. Adjusting the tension of Platen Belt and Reduction Belt
Prepare the Sonic belt tension meter (Unitta # U-507).
Weight Width Span Tension
Belt tension meter
Reference Value
g/mm (W) x m (L)
mm
mm
N
Platen Belt
752
Reduction Belt
2.5 9
188
40 - 50
<Note>
Make sure that the Connector between the Platen Motor and the Main PCB should be disconnected. (Refer to
“6-1-3. Assembling / Disassembling of the Platen”.)
Platen Belt
1.
Loosen two Bolt Sockets (1).
(1)
2.
Loosen the Nut 2 M4 (2) and adjust the Bolt Socket (3) by checking the tension with the belt tension
meter.
<Note> Move the Platen Arm at the rearmost position and check the tension at the left side of the Belt, by
flipping it with your finger.
・
The tension increases by turning the Bolt Socket clockwise.
・
The tension decreases by turning the Bolt Socket counter-clockwise.
Flipping point
GT-3
Series
133
3.
Screw the Nut 2 M4 (2) and the two Bolt Sockets (1), load and unload the Platen by hand to make it move
smooth, and then check the tension again.
<Note> Repeat the steps 1 to 3 if the tension is out of the reference value.
4.
Connect the connector from the Platen Motor to the Main PCB.
(2)
(1)
(3)
Содержание GT-3 Series
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Страница 130: ...6 Replacing Parts Bottom Parts of the Covers 0182Y 0183Y GT 3 Series 121 ...
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