Sanyo PLC-SU40 Service Manual

Also see for PLC-SU25: Owner's manual Specifications

From previouspage-44-TroubleshootingCheck AV source selecting stage;Check S-video signal (Y/C) on the AV board.Check IC2101, Video/S-Video-sw, and IC3101, Video decoder, andperipheral circuit.S/CV-SW signal (S-Video:H) is applied on pins 2, 7 and 12 of IC2101,output from pin 17 of IC1804.No picture with S-VIDEOinput sourceCheck AV source selecting stage;Check component signal (Y/Cr,Pr/Cb,Pb) on the AV board.Check IC5201, PC/AV RGB SW, and IC8201, A/D conversion andperipheral circuit.Check IC2101, Video/S-Video-sw, and IC3101, Video decoder, andperipheral circuit.PC/AV_SW5 signal (PC: H) is applied on pin 26 of IC5201, output frompin 16 of IC1804 through IC1351, buffer IC.No picture withComponent input sourceCheck AV source selecting stage;Check composite video signal (Video) on the AV board.Check IC2101, Video/S-Video-sw, and IC3101, Video decoder, andperipheral circuit.S/CV-SW signal (Video:L) is applied on pins 2, 7 and 12 of IC2101, out-put from pin 17 of IC1804.Check IC2101, Video/S-Video-sw, and IC3101, Video decoder, andperipheral circuit.PC/AV_SW5 signal (PC: H) is applied on pin 26 of IC5201, output frompin 16 of IC1804 through IC1351, buffer IC.No picture with videoinput sourceNoYesYesYesNo