DOS HOSPITALITY (serv.man44). UP5700-004 Changes to the Main and CPU PWB - Sharp EPOS Technical Bulletin (repair manual)

dos hospitality (serv.man44) technical bulletin
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Technical Bulletin
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EPOS / UP5700-004 Changes to the Main and CPU PWB
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CHANGES CARRIED OUT IN MODEL UP-5700.
1.
CHANGE CARRIED OUT IN THE MAIN PWB.
2-1. DISCONTINUANCE OF THE CPU TEMPERATURE DETECTING CIRCUIT.
2-2. CHANGE CARRIED OUT IN THE CPU PWB (2).
2-3. CHANGE CARRIED OUT IN THE CPU PWB (3).
2-4. CHANGE CARRIED OUT IN THE CPU PWB (4).
 1. Change carried out in the main PWB. 
1.Model Name:
UP-5700
2.General:
A change has been carried out on the main PWB.  This action has been carried out as
a measure to establish uniformity of the main PWB between model UP-5700 and model
BE-8500.
3.Description:
A change has been carried out on the main PWB. The main PWB version has been
changed from X7537BH-81 to X7537BH-84. Details of the content of the change are as
follows.
<1> A pull-up resistor R256 (10 K
) has been added to the PWB pattern at the DSR8# 
signal (pin IC10-40).
<2> A pull-up resistor R257 (10 K
) has been added to the PWB pattern at the SHEN2# 
signal (pin IC10-65).
<3> A pull-down resistor R258 (10 K
) has been added to the PWB pattern at the STH2 
signal (pin IC10-68).
These resistors have not been packaged.
4.Action:
For production: Running change carried out from 1998 July production.
(Interchangeability): Old parts are interchangeable with new parts for model UP-5700.
5.Other:
Attached supplementary documents: Circuit diagram, Figure 1.
1/11
ELECTRONIC CASH REGISTER
TECHNICAL BULLETIN
Date :
Model :
Ref :
Colour
Code :
11th January 1999
UP5700
UP5700-004
White
Sharp Electronics (UK) Ltd, Technical Support Group
Originators Initials_____________ Supervisors Initials_____________ Approval Date____________
 2-1. Discontinuance of the CPU temperature detecting circuit (1). 
1.Model Name:
UP-5700
2.General:
The redundant CPU temperature detecting circuit of the CPU PWB has been
discontinued.
3.Description:
Changed parts:
Ref. No.
Parts Code
Description
C2
VCKYTV1HB103K
Discontinued
C3
VCKYTV1HB103K
C4
VCKYTV1HF104Z
IC5
VHIKIA555F/-1
IC6
VHILM334S8/-1
R17
VRS-TS2AD202J
R18
VRS-TS2AD221J
There is no problem whether or not the parts listed above are packaged or not.
4.Action:
For production: From March 1998 production.
5.Other:
Attached supplementary documents: Circuit diagrams of the changed section.
 2-2. Change carried out in the CPU PWB (2). 
1.Model Name:
UP-5700
2.General:
An OS capacitor has been packaged in the 2.9 V power supply line of the CPU PWB. 
In accordance with this, the redundant OS capacitor on the main PWB side has been
discontinued.
3.Description:
C18 (RC-EZ1572RC01) of the main PWB has been discontinued.
4.Action:
For field: No field action is necessary.
For production: From December 1997 production.
5.Other:
Attached supplementary documents: Circuit diagrams of the changed section, Figure 3.
2/11
 2-3. Change carried out in the CPU PWB (3). 
1.Model Name:
UP-5700
2.General:
A change has been carried out in the CPU PWB. This action has been carried out as a
measure to improve productivity concerning the finishing operations on the added
capacitor.
3.Description:
A change has been carried out in the CPU PWB. The PWB version has been changed
from X7550BH-70 to X7550BH-83. Details of the content of the change are as follows.
<1> C59: 150 
µ
F / 6.3 V
Added PWB pattern
<2> C60: 1000 pF
Added PWB pattern
4.Action:
For production: Running change from March 1998 production.
5.Other:
Attached supplementary documents: PWB silk screening of the changed section,
Figure 4.
 2-4. Change carried out in the CPU PWB (4). 
1.Model Name:
UP-5700
2.General:
A change has been carried out in the pattern of the CPU PWB. This action has been
carried out as a measure to improve productivity of the finishing operations on the
added jumper wire.
3.Description:
A change has been carried out in the CPU PWB. The PWB version has been changed
from X7550BH-83 to X7550BH-84. The finishing operations on the added jumper wire
have been discontinued.
4.Action:
For production:
<1> UP-5700 : Running change carried out from August 1998 production.
5.Other:
Attached supplementary documents: PWB pattern of the changed section, Figure 5.
3/11
4/11
Fig. 1
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