Troubleshooting By Blocks - Samsung CS21A530FLKXSV Service Manual

Troubleshooting

4-1-4 Troubleshooting by Blocks

1. Tuner Diagnosis
If there is no signal measured even though the RF signal received by the external antenna is input to the Main Board Tuner.
- Supplied Power: 5V, 8V, 33V
- RF Trouble Check: Check CVBS output
- AUDIO Trouble Check: Check SiF Signal output
4-10
B+5V B+33V IF
Samsung Electronics