System Error - Samsung WA45M7050 Fast Track Troubleshooting

Error Mode
Error Mode
AC - The signals between the sub and main PBAs are not sensed because of communication error.
- Check the connector connections between the sub and main PBAs carefully.
→Check for incorrect or loose connections, etc. Remove the sub PBA C/Panel and check for any
AC3 - The signals between The DR Module and main PBAs are not sensed because of communication
- Check The connector connections between The DR Module and main PBAs carefully.
→Check for incorrect or loose connections, etc.
- Remove The DR Module and Check for any faulty soldering.
AC4 - The signals between The WIFI Module and main PBAs are not sensed because of communicatio
- Check The connector connections between The WIFI Module and main PBAs carefully.
→Check for incorrect or loose connections, etc.
- Remove the WIFI Module and Check for any faulty soldering.
AC5 - The signals between The LCD Module and main PBAs are not sensed because of communicatio
- Check The connector connections between The LCD Module and main PBAs carefully.
→Check for incorrect or loose connections, etc.
- Remove The LCD Module and Check for any faulty soldering.
AC6 - The signals between the Inverter PBA and main PBA are not sensed because of communication
- Check The connector connections between the Inverter PBA and main PBA carefully.
→Check for incorrect or loose connections, etc.
- Remove the Inverter PBA and Check for any faulty soldering.

System Error

Error Mode
SF1
SF2
SF3
Hall Sensor Check
Check Voltage at Pin #4 and #3 of CN9
Tester Check = DC0.6V
Check Voltage at Pin #4 and #2 of CN9
Tester Check = DC0.6V
Motor Check
Causes
Micro Controller Operation Fail.
Corrective Actions
Corrective Actions
Corrective Actions
Replace Assy PCB.