Panasonic TC-26LX20 Technical Manual page 4

Standby Power Supply............................................................................................ 21
Primary Power Supply............................................................................................. 21
Power Supply Operation (TC-32LH, TC-26/32LX20).............................................. 22
Power On Operation of the DC-to- DC converter .................................................. 22
Power Off Operation of the DC-to-DC converter................................................... 23
Protection of the DC-to-DC converter.................................................................... 23
AP Board - Secondary Power Supply .................................................................... 25
Secondary Voltages ............................................................................................... 26
Video Circuit Explanation........................................................................................... 27
A Board ........................................................................................................................ 27
DG Board ..................................................................................................................... 28
Video Signal Processing ............................................................................................ 28
Video Signal Processing ............................................................................................ 29
Low Voltage Differential Signaling ............................................................................ 30
HDMI Signal Path......................................................................................................... 32
Self-Check Function for TV Section .......................................................................... 33
Self-Check Access ...................................................................................................... 33
Servicing the TV Portion............................................................................................. 34
Service Adjustment Mode for TV............................................................................ 34
How to exit Adjustment mode................................................................................. 35
Servicing the DVD ....................................................................................................... 36
Shutdown Problems.................................................................................................... 38
LED Flashes Three Times ..................................................................................... 38
LED Flashes Once every 5 seconds ...................................................................... 39
LED Flashes Five Times ........................................................................................ 39
LED Flashes Eight Times....................................................................................... 39
Unit shuts down and the Power on LED is off. ....................................................... 39
SOS Shutdown Problem ........................................................................................ 39
Does Not Record Video to Disc ................................................................................. 42
Does Not Record Audio to Disc ................................................................................. 43
Primary Power Supply Check .................................................................................... 44
Secondary Power Supply Check ............................................................................... 45