
ISHIDA 
SCALES 
C8 
.. 
300/600 
Electronic Balance 
SERVICE 
MANUAL 
ISHIDA 
SCALES MFG.CO.g LTD 
.. 
44 
SANNO~CHO 
SHOGOIN SAKYO-KU KYOTO 606 JAPAN 
Ishida CB-300 CB-600 Service and calibration Manual

\ 
TABLE 
OF 
CONTENTS 
II 1 Introduction 
1 
.. 
1 
Specifications 
' 
.. 
1 
External 
View 
II 
2 Mechanical 
Components 
2-1 
Packing 
2-2 
. Procedure 
to 
Open 
Main 
Unit 
2 
.. 
3 
Load Cell Limit 
Adjustment 
II 
3 Electrical 
Components 
3 
.. 
' 
Block Diagram 
3-1 
Main 
Board 
3-3 
Battery 
(Option) 
3-3 
Load Cell 
3 
.. 
4 
ACAdapter 
3-4 
High-low 
Range 
II 
4 Electrical 
Adjustments 
4-1 
Test Program 
to 
Check AID 
and Area Values 
4-2 
Area Setting 
4 
.. 
3 
Initial 
AID Value 
Adjustment 
4-3 
Span 
Adjustment 
II 
5 Maintenance 
5-1 
Main 
Circuit Board P-584 
Replacement 
5-2 
Fuse 
Replacement 
5-3 
Troubleshooting 
You can help improve this manual 
by 
calling 
attention 
to 
errors 
and 
recommending improvements. 
Please 
convey 
your 
comments 
to 
the nearest Ishida 
Scales 
regional 
representatives. 
Thank 
you. 
C8-300/600 0 
SERVICE 0 REV 
0 
i 

\ 
1 Introduction 
SPECIFICATIONS 
• 
CB-300 
I 
(B·600 
Remarks 
Capacity 
300g 
(1 
50 
g) 
I 
600g (300g) 
() 
indicates 
LOW 
range. 
Min. Grad.  0.19 (0.05g) 
I 
0.29 (0.19) 
Same 
as 
above. 
Auto 
Zero 
Standard 
feature. 
Accuracy 
1/3000 
Display 
Ishida custom 
made 
extra-large 
LCD. 
Checker 
Buzzer rings and 
weight 
display flashes 
Function 
when 
weight 
exceeds 
target 
weight. 
Battery Level 
Warning 
"B" 
displayed and 
weight 
flashes 
when 
battery 
level 
is 
low. 
External Dim.  192 mm (D) x 190 mm (W) x 
67 
mm (H) 
Platter 
Circular 
1  Rectangular 
Optional 
platters avail-
Dimensions 
130 
mm 
dia. 
170 
mm 
x 130 
mm 
able. 
Electrical 
Standard 
AC 
adapter. 
AC100V± 
10%. 
Batteries 
optional. 
Power 
Batteries (nickel-cadmium). 
Detector 
Ishida 
high-performance 
load cell. 
Carrying 
Case 
Portable 
case 
is 
standard 
equipment. 
EXTERNAL 
VIEW 
C8-300/600 • SERVICE. 
REV 
(I 
AC ADAPTER PLUG 
POWER/RANGE 
SWITCH 
External 
View 
of 
Electronic Balance 
1-1 

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