Samsung DMT300 Series Service Manual page 41

Error type Error mode
Main-PBA DC None
Voltage Error
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Checking Method
1) Check the DC voltage of the Main PBA.
• Measure the voltage between pin 6 (amber) of the main PBA CN302
connector and pin 7 (pink) of the CN302 connector.
• Normal: 4.5V to 5.5V
• Measure the voltage between pin 6 (amber) 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
Corrective actions
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)
4. Troubleshooting
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