Sanyo PLV-Z2000 Service Manual

Also see for PLV-Z2000: Owner's manual Owner's manual

Contents

-85--85-Troubleshooting● No PictureNo pic ture w i t h a l l o finput sources Check signal processing stage and LCD driving stage;Check power supply circuit 15.5V and peripheral circuit.Check IC501, IC531, IC561, IC401, IC4401, IC301 and peripheral circuits.No picture withHDMI (RGB digital)input sourceGo to next pageYesYesNoNoCheck following steps.SG: Digital RGB signals from IC8001 are sent to IC301, and the other signals areA/D converted in IC8201 and sent to IC301. They are scaled in IC301. After cor-recting for picture quality in IC4401 and IC401, they are sent to IC501, IC531,IC561(sampling & holding, D/A conversion).Sync: PW_ DHS,DVS,DCLK from IC301 to IC4401No picture withCOMPONENT1/2 (YCbCr)input sourcesCheck Component source input stage;Check IC301 and peripheral circuit.YesNo Component 1 : Y1_pin 210/101, CB1_pin 311, CR1_pin 209Component 2 : Y2_pin 211/103, CB2_pin 212, CR1_pin 102Check HDMI (RGB digital) source input stage;Check IC8001 and peripheral circuit.Check sync signals SIHS and SIVS.Check 5VHDMI power supply line.SG: TMDS data signals are converted to RGB digital signals in IC8001, and sent toIC301.Receiving video content encrypted with HDCP(High-bandwidth DigitalContent Protection), IC8001 reads the HDCP keys and it allows the signalprocessing.Sync: SIHS and SIVS signals from IC8001 are sent to IC301.SG: Description of visual signal flowSync: Description of sync signal flow