4. Troubleshooting
4-13
Error type
Error mode
Checking Method
Corrective actions
Power error
None
1. Check the connections for the power cable
- Reconnect the power cable.
2. Check the voltage of the power outlet.
Normal: AC 120V
¯
- Connect to a 120V power source.
3. Check the wires of the Main PBA power part.
- Measure the voltage between the black wire
and the yellow wire of CN101.
Normal: AC 120V
¯
- Faulty: Check and replace the wires of the power part.
- Check
voltage
4. Check the DC voltage of the Main PBA.
- See “Main PBA DC voltage error”.
Main-PBA DC Voltage
Error
None
Check the DC voltage of the Main PBA.
- Measure the voltage between pin 4 (orange)
of the main PBA CN302 connector and pin 7
(pink) of the CN301 connector.
Normal: 4.5V to 5.5V
¯
- Measure the voltage between pin 10 (blue)
of the main PBA CN302 connector and pin 9
(white) of the CN302 connector.
Normal (Power Key On): 9.5V to 12.5V
¯
Normal (Power Key Off): 5.5V to 7.0V
¯
- Faulty: Replace the Main-PBA Assy.
- Remove
retainer.
- Check voltage (4.5V~5.5V).
- Check voltage (9.5V~12.5V or 5.5V~7.0V)
Содержание DMT400 series
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Страница 33: ...3 23 3 Disassembly and Reassembly Memo ...