5. Check flow of the power board (20”):
Power board damages
or fuse blows
Replace the fuse and check
whether N501, D501
breakdown
Replace N501, D501
Check whether C512 has 18V
Replace D502
Check whether pin1 of N501has
wave
Replace N502
Check whether N502 is damaged
Replace
N505
Check whether N505 is
damaged
Check whether N505, D507 is
damaged
Replace the damaged parts
Y
Y Y
N
Y
N
Y
N
Y
N
N
Y
20
TROUBLESHOOTING CHARTS
LCD-20XR1AU.indd Sec1:20
LCD-20XR1AU.indd Sec1:20
2006/07/13 11:59:29
2006/07/13 11:59:29
Summary of Contents for LCD-20XR1/AU
Page 13: ...11 BLOCK DIAGRAM ...
Page 16: ...14 4 Inner block diagram of TPA1517 6W stereo audio amplifier 14 IC BLOCK DIAGRAM ...
Page 23: ...21 SCHEMATIC DIAGRAM 1 INTERFACE ...
Page 24: ...22 SCHEMATIC DIAGRAM 2 TUNER AUDIO ...
Page 25: ...23 TO INFRARED BORAD SCHEMATIC DIAGRAM 3 SCALER FLI8125 ...
Page 26: ...24 SCHEMATIC DIAGRAM 4 FLASH ...
Page 27: ...25 SCHEMATIC DIAGRAM 5 OUTPUT POWER KEY BOARD ...
Page 28: ...26 SCHEMATIC DIAGRAM 6 POWER BOARD INFRARED BOARD ...
Page 29: ...27 EXPLODED VIEW 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ...