Samsung SCC-B2335 Service Manual - Page 28

Trouble Shooting A Is the I/O signal of IC1 (CCD) normal? Yes No Refer to a pattern image of Table 4-3 Is the I/O signal of IC3 (AD9949) No normal? Yes Is the I/O signal of the VIDEO line No normal? Yes Is the output No signal of the rear PCB BNC normal? Yes Check the monitor screen. Check IC1 (CCD) of the CCD for the bus line, and replace it if necessary. -Check V1/V4, V3, V2A/V2, V2B/V1, SUB - Check H1, H2, RG -VOUT (CCD output signal) Ch k IC4 IC5 - Check IC4, Check IC3 (AD9949) and the bus line, and replace it if necessary. Check the bus line including CCD PCB IC7, and replace it if necessary. -IC7-4pin: VBS 1.0Vp-p -IC7-2pin: VBS 2.0Vp-p Refer to a pattern image of Table 4-4 Check of the rear PCB is connected to the CCD PCB properly, and replace FFC if necessary. 4-6 Samsung Electronics