Samsung WS32Z306VBXXEC Service Manual page 77

Troubleshooting
6. CXA2180 Diagnosis
The Y/Pb/Pr signal is received from VSP9405B and CXA2151Q and the
signal is output as R/G/B. It also outputs the V/H Drive, E/W and performs
the ABL and EHT operation.
If V-Drive output is not detected, check for an IC defect.
- Power supply : 5V, 9V
- Check for input defects : Y/Pb/Pr, H/V
- Check for output defects : R/G/B, ABL, EW, V/H-DRIVE
6-14 Samsung Electronics