Returning To Service - MTD 188 Professional Shop Manual

8. Attach the positive lead of a DVOM to the posi-
tive (smaller) tab of the indicator. See Figure
2.40.
Positive lead of
DVOM
Figure 2.40
9. Attach the negative lead of the DVOM to the
negative post of the battery pack.
10. Set the DVOM to the DC volts scale and place it
close to the indicator so that both can be seen at
the same time.
11. Slowly turn the variable resistor and note the
reading on the DVOM when the different LEDs
light up or go out. See Figure 2.41.
Monitor LEDs and DVOM
Figure 2.41
12.
operation
Voltage
52 - 47.9
47.9-
46.7
46.7-
Tester leads
45.2
45.2-
40.4
40.4-28

Returning to service

After diagnosing and repairing any fault in an electrical
circuit and any other repairs needed, the following
steps should be taken:
1.
2.
3.
4.
5.
19
Compare the results to Table 2.
Table 2:
LED LED LED
1 2
green green
ON ON
OFF ON
OFF OFF
OFF OFF
OFF OFF
NOTE: If the results do not match the above
table, replace the indicator. If they do match the
above results, check the harness.
Test run the machine to verify that the condition
has been fix.
Cycle the circuit at least ten times.
Allow the machine to cool down for a couple of
hours.
Re-test the machine to verify the condition does
not re-appear.
If the condition does not re-appear, return the
machine back to service.
ELECTRICAL SYSTEM
LED LED LED
3 4 5
green green red
ON ON OFF
ON ON OFF
ON ON OFF
OFF ON OFF
OFF OFF ON