ER-A490 (serv.man8). A490-006 Paper Take-up Gear Change - Sharp ECR Technical Bulletin (repair manual)

er-a490 (serv.man8) technical bulletin
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ER-A490 (serv.man8)
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Technical Bulletin
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Device
ECR / A490-006 Paper Take-up Gear Change
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er-a490-sm8.pdf
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CHANGE CARRIED OUT IN THE SP GEAR, PULLEY, AND SP
FRAME OF THE PR-45M, PR-58M/A/L PRINTER.
1.Model Name:
ER-A490, ER-01PU
2.General:
Within the parts of the PR-45M printer of models PR-58M, A and L, a change has been
carried out in the dimensions of the SP gear and the pulley. This action has been
carried out as a measure to improve the revolving performance of the SP gear and the
pulley, and to stabilize the winding strength of the spool.
Also within the parts of the PR-45M, PR-58M, A and L printer a change in the
dimensions of the SP frame have been carried out.
The action described above has been carried out as a measure to stabilize the overall
quality of the machine.
There has been no change carried out in any of the part codes for the concerned parts.
Old parts are interchangeable with new parts.
SP GEAR
; NGERH6643BHZZ
PULLY
; NPLYB2325BHZZ
SP FRAME
; LFRM-6698BHZZ (PR-58 M and A only)
; LFRM-6699BHZZ (PR-58L only)
The part codes for the PR-45M printer unit in models PR-58M, A, and L are as shown
below.
PR-58M
; KI-OB6777BHZZ
PR-58A
; KI-OB6777BHZA
PR-58L
; KI-OB6779BHZZ
PR-45M
; KI-OB2359BHZZ
1/3
ELECTRONIC CASH REGISTER
TECHNICAL BULLETIN
Date :
Model :
Ref :
Colour
Code :
11th January 1999
ERA490
A490-006
White
Sharp Electronics (UK) Ltd, Technical Support Group
Originators Initials_____________ Supervisors Initials_____________ Approval Date____________
3.Description:
<1> SP Gear
A change has been carried out in the dimensions of the SP gear. The dimensions 
have been changed from ø4.5 to ø4.75 mm. This action has been carried out as 
a measure to improve the revolving performance. Please refer to section “A” of 
the figure for details concerning this change. A change has also been carried 
out in the dimensions of the outer diameter of the shaft. The dimensions have 
been changed from ø7.6 to ø7.7 mm.  Please refer to section “B” of the figure 
for details concerning this change.
<Distinguishing marks>
An “A” has been marked on the side face of the changed parts.
<2> Pulley
A change has been carried out in the dimensions of the hole. The dimensions 
have been changed from ø4.5 to ø4.75 mm. This action has been carried out as 
a measure to improve the revolving performance. Please refer to section “C” of 
the figure for details concerning this change.
<Distinguishing marks>
The changed parts are black in color (parts before the change was carried out are 
white in color).
<3> SP Frame
A change has been carried out in the position of the groove for the E-ring. 
The groove for the E-ring has been moved outward from 9.5 to 10.0 mm. 
This action has been carried out as a measure to stabilize the machining 
measurements of the shaft. Please refer to section “D” of the figure for details 
concerning this change. In accordance with this change a change has also been 
carried out in the length of the shaft. The length of the shaft has been changed 
from 11.5 to 12.8 mm. Please refer to section “E” of the figure for details 
concerning this change.
<Distinguishing marks>
The length of the changed parts is longer than the length of the parts before the 
change.
2/3
3/3
Changed parts are black in color.
SP Frame
(for PR-58L)
SP Frame
(for PR-58M and A)
Spool
SP Gear
C Spring
Pulley
C section
“A” mark
B section
A section
D section
E section
SP Frame
SP Gear
Pulley
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