Manual No. 085-3435-07
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IGB/IGX Series (Overseas Specifications) Service Manual
4.4 Troubleshooting
Symptoms Causes
Remedies
1. AC power is not supplied.
(IGX Series only)
•
Check the voltage of the main
power outlet.
•
Check the power cable, and replace
if necessary.
•
Check the FUSE (1A 250V)
•
Check the TRANS ASSY
•
Check the main board PS-016
connector XJ2.
2. Battery voltage is low.
(IGB Series only)
•
Check batteries, and replace if
necessary.
•
When using the AC adapter, confirm
that the adapter voltage is within the
range of 3.2 to 6VDC.
3. The ON/OFF key is
defective.
•
Using the tester, check that the key
is conducting, and replace if
necessary.
The display does not appear when
ON/OFF is pressed.
Each ON/OFF key is shown below
for the IGB or IGX Series.
or
4. The main board is
defective.
•
Replace the main board PS-016
(IGX) or PS-018 (IGB) with a normal
one, then check.
“Err” is displayed when the
ON/OFF key is pressed.
1. E2ROM data is garbled.
•
Initialize E2ROM (all) in Test Mode
C6.
•
(Span adjustment is required after
initialization)
•
If recovery is not possible, the main
board may be defective. Replace if
necessary.
Test mode “C1” is displayed when
the ON/OFF key is pressed.
Scale data is in initialized
state.
•
Perform span adjustment.
1. A/D value at Zero point is
outside of start range, or
unstable.
Out of AD initial value
Load cell is defective.
•
Remove items from the weighing
platter.
•
Check A/D value and adjust.
Perform Test Mode C1, and if the
value is unstable, first replace the
main board, then replace the load
cell.
If outside of the start range, perform
Zero and Span adjustments.
When performing Zero and Span
adjustments, if the weight that is
less than the weighing capacity
reaches the lower limit, replace the
load cell.
“-----“ is displayed after the
ON/OFF key is pressed and the
display is checked.
2. Main board is defective.
•
Replace the main board PS-016
(IGX) or PS-018 (IGB) with a
normal one, then check.
