8 Blinks Error Code (TC-P42X1) Circuit Explanation
On this model, only the circuit used to monitor for physical connection between the
panel and the SS board is used to trigger an 8 blinks condition. The energy-recovery-
circuit portion used to monitor the operation of the sustain drive circuit is located
on the SC board.
Under normal condition, Q16280 is on.
When Q16280 is on, a low is provided to the anode of D16280 (D280).
If one of the FPC cables is open, Q16280 turns off and a high is provided to the
anode of D16280 (D280). This high is provided to pin 66 of the CPU in the
A board. When this happens, the TV shuts down and the power LED blinks
8 times.
To determine if the 8 blinks is caused by the A board, SS board, or the Panel:
•
Isolate the SS board and check if the TV stays on when it’s turned on.
•
If the TV does not stay on after disconnecting the SS board, the A board is
defective.
•
If the TV stays on, then the SS is bad, the FPC cables are open, or the Panel is
defective.
To isolate the SS board for 8 blinks condition:
Remove SS23 and see if the TV stays on
https://www.werbemousepads.de/pdf/
Summary of Contents for Viera TC-P42S1
Page 12: ...VIErA Technology https www werbemousepads de pdf ...
Page 22: ...S Series Full HD https www werbemousepads de pdf ...
Page 23: ...Connectors Boards Location TC P42S1 https www werbemousepads de pdf ...
Page 25: ...Standby Operation https www werbemousepads de pdf ...
Page 27: ...Power On https www werbemousepads de pdf ...
Page 29: ...Sub Voltages https www werbemousepads de pdf ...
Page 33: ...SOS Blinking Timing Chart https www werbemousepads de pdf ...
Page 34: ...SOS Detect Block Diagram TC P42S1 https www werbemousepads de pdf ...
Page 35: ...Panel Drive SOS Detect Block Diagram TC P42S1 https www werbemousepads de pdf ...
Page 36: ...Panel Drive SOS Detect Block Diagram TC P42X1 https www werbemousepads de pdf ...
Page 46: ...6 Blinks Error Code TC P42X1 https www werbemousepads de pdf ...
Page 48: ...DRV RST Block Diagram TC P42S1 https www werbemousepads de pdf ...
Page 50: ...DRV RST Block Diagram TC P42X1 https www werbemousepads de pdf ...
Page 52: ...8 Blinks Error Code TC P42S1 https www werbemousepads de pdf ...
Page 56: ...11 Blinks Error Code https www werbemousepads de pdf ...
Page 62: ...SU SD Boards Isolation https www werbemousepads de pdf ...
Page 66: ...Signal Process Block https www werbemousepads de pdf ...
Page 67: ...Signal Process Block Diagram https www werbemousepads de pdf ...
Page 69: ...Service Notes https www werbemousepads de pdf ...
Page 72: ...Self Check Menu https www werbemousepads de pdf ...