Slide 4
Power LED Error Code Definition and the Failure-Causing-
Boards
LIST OF BOARDS POSSIBLY CASUSING THE FAILURE
POWER LED
ERROR
CODE
CIRCUIT MONITORED
CONDITIONS TRIGGERING
THE SHUTDOWN
MOST
COMMON
2
ND
OCCASIONALLY
RARELY
1 BLINLK
Panel Information SOS
Panel Alarm SOS
Communication problem between CPUs on A board.
A
¤
¤
¤
2 BLINKS
P15V form the P board
Missing P15V
•
P15V is not been generated by the P board.
•
P15V is been affected by one of the boards it is
connected to (A short circuit of the P15V).
Wrong diagnostic by the A board
SC P SS
A
3 BLINKS
P3.3V from the A board
Missing P3.3V
Reasons:
•
The A board is not generating the 3.3V
•
The 3.3V is been affected by one of the C boards
or the Panel (A short circuit of the P3.3V).
Wrong diagnostic by the A board
C1 or C2
A
Panel
¤
4 BLINKS
Power Supply output
voltages
Regulation issues with any of the voltages output from the
power supply.
Wrong diagnostic by the A board
P A
¤
¤
5 BLINKS
P5V from the A board
Missing P5V
Reasons:
•
The A board is not generating the 5V
•
The 5V is been affected by the SC, SS, A, or C2
board (A short circuit of the P5V).
Wrong diagnostic by the A board
SC,SS C2
A
¤
6 BLINKS
SC Energy Recovery Circuit
An increase or reduction of the Energy Recovery Circuit
output (MID).
Open connection between connector A33 on the A board
and SC20 on the SC board.
Open connection between any of the ribbon cables on the
C boards and the A board.
Open connection between the ribbon cable/cables
interconnecting the C boards.
Wrong diagnostic by the A board.
SC A
¤
C
Summary of Contents for G20 Series
Page 11: ...Detailed Troubleshooting Procedure for Shorted Vsus Slide 11...
Page 13: ...Detailed Troubleshooting Procedure for Shorted P15 Slide 13...
Page 15: ...Detailed Troubleshooting Procedure for Shorted Vda Slide 15...
Page 17: ...Troubleshooting 1 Blink Failure Slide 17...
Page 19: ...Troubleshooting 2 Blinks Failure Slide 19...
Page 22: ...Troubleshooting 3 Blinks Failure Slide 22...
Page 25: ...Troubleshooting 4 Blinks Failure Slide 25...
Page 28: ...Troubleshooting 5 Blinks Failure Slide 28...
Page 32: ...Troubleshooting 6 Blinks Failure Slide 32...
Page 35: ...Troubleshooting 7 Blinks Failure Slide 35...
Page 38: ...SU SD boards Together Isolation Procedure Slide 38...
Page 42: ...Vfo VSCN F 5V_F Resistance Measurements SU SD boards Slide 42...
Page 45: ...Troubleshooting 8 Blinks Failure Slide 45...
Page 48: ...Troubleshooting 9 Blinks Failure Slide 48...
Page 50: ...Troubleshooting 10 Blinks Failure At Plug in Slide 50...
Page 52: ...Troubleshooting 10 Blinks Failure At Power on Slide 52...
Page 54: ...Troubleshooting 12 Blinks Failure Slide 54...
Page 57: ...Troubleshooting No Power Dead Unit Slide 57...
Page 60: ...TV s Behavior After Connectors Removal Slide 60...
Page 62: ...End Slide 62...