Sharp LC-40LE280X - Troubleshooting; Troubleshooting Guide

LC-32LE280X/LC-40LE280X
4 – 1
CHAPTER 4. TROUBLESHOOTING
TABLE
[1] TROUBLESHOOTING TABLE
[1]TROUBLESHOOTINGTABLE
Nopower(frontLEDfailuretolightup)ornostartup(frontLEDfailuretoturnfromredtogreen)
Arethewireharnessesandothercablesproperlyconnectedin
theset?
NO Reconnectthewireharnessesandothercablesproperlyinthe
set.
YES
Isthere thePSONandPNLPOWsignalinputatpins
(1)ofP9601(32”)/(9),(1)ofP9601(40”)
NO Checkthe
PSON signallinePNL POWsignalline.
YES
AretheDC/DCconverteroutputsandtheoutputvoltagesalong
thecontrollinesasspecified?
NO ChecktheDC/DCconvertersandthecontrollines.Replace
defectivepartsasrequired.
1) BU1.5V(IC9606)
2) BU3.3V(IC9602)
3) D1.05V(IC9603)
4) BU3.3V(IC9602)
5) D5.1V(IC9601)