Service
Manual
12. Troubleshooting
12
8
438 9152-31/06
05.03
4. Disassemble the contactor X172 on the transformer
T10. Verify that the voltage supplies from T10 are as
shown in the table below. Measure on card terminal
X172.
X172:5 - 6 approx. 1.75 V
X172:6 - 7 approx. 1.75 V
X172:3 - 4 approx. 14.5 V
X172:1 - 2 approx. 13.5 V
One of the voltages is incorrect All voltages are correct
Troubleshoot the cabling
between the transformer and
programme unit.
5. Verify the voltage supply to T10. Measure on
contactor X178 (230 V).
Voltage OK Voltage incorrect
Troubleshoot the cabling for
the voltage supply (between
the main power switch Q1
and X178).
6. Check for correct placement of the short-circuit pin
Short-circuit pin OK Short-circuit pin incorrectly set
T1 probably Change the position of
defective the short-circuit pin
Continued from previous page
8
Fig.
8
5199
X178
X172
1.75 V 1.75 V 14.5 V
13.5 V
12
34
56
7
240
230
208
120
Fig.
8
Voltage supply
Short-circuit pin for
voltage supply
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