Use The Test Tool To Check The Power Supply - WMF 5000 S+ Service Manual

Service

2.7.1 Use the test tool to check the power supply

Preparatory activities:
Check 24 V and 30 V:
 Unplug the 7-pole connector (for the power supply) from the power stage
 Use the adapter cable to connect the test tool to the power stage and the STV cable (see illustration)
 Plug in the connector cable
 Briefly press the ON button
 All LEDs light up: >> power supply OK
 24 V or 30 V LED does not light up >> power supply is defective
 No LEDs light up: >> continue with 5 V check
Check 5 V: (Test tool still plugged into adapter cable)
 Unplug the main power cord
 Unplug test tool adapter cable from power stage (see illustration)
 (Adapter cable between test tool and STV cables remains in place)
Plug in the connector cable

 Briefly press the ON button
 5 V LED lights up:
>> 5 V from power supply OK
>> 5 V short circuit is present inside the machine
 5 V LED does not light up:
>> Power supply defective
Additional note:
If no LEDs light up during the check, this can also be due to a defective on/off button or a defective cable connection between the power supply and power stage.
 Unplug the main power cord!
 Access the power stage
 Plug the 7-pole adapter cable from the adapter cable set into the test tool
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