3-30
ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER SUPPLY (SMPS)
YES
no 5.3va
Power line of main PcB is short
replace F101 (same fuse)
NO
is the
F101 normal?
replace Bd101
NO
is Bd101 normal?
YES
replace r101
NO
is the r101 normal?
YES
YES
is d102 normal?
check or replace the d102
NO
is vcc (13v~27v)
supplied to ic101
Pin4?
YES
replace ic103
NO
is there about
2.5v at the ic103
Pin1?
YES
YES
replace ic102
NO
is the ic102 normal?
Summary of Contents for XV-BP1A
Page 13: ...2 6 MEMO ...
Page 54: ...3 41 3 Video Part 1 100 Full Color bar 7 9 10 8 11 14 CVBS_I 7 Y 8 Pb 9 Pr 10 ...
Page 56: ...3 43 5 AUDIO PART S PDIF 15 17 16 18 19 21 ASPDIF 15 ...
Page 57: ...3 44 6 HDMI PART 17 16 18 19 21 20 HDMI_SDA 16 HDMI_SCL 17 HDMI_CLK 18 HDMI_DATA 19 ...
Page 58: ...3 45 7 FRONT I F PART 21 20 T_TX 20 R_RX 21 ...
Page 59: ...3 46 BLOCK DIAGRAMS 1 OVERALL BLOCK DIAGRAM ...
Page 60: ...3 47 2 SMPS BLOCK DIAGRAM ...
Page 61: ...3 48 3 SYSTEM BLOCK DIAGRAM ...
Page 62: ...3 49 4 MT8520 DDR2 SDRAM NAND FLASH EEPROM BLOCK DIAGRAM ...
Page 63: ...3 50 5 MT8520 HDMI ETHERNET USB AV BLOCK DIAGRAM ...
Page 65: ...3 52 7 SMPS POWER SIGNAL BLOCK DIAGRAM ...
Page 66: ...3 53 8 MAIN BOARD POWER SIGNAL BLOCK DIAGRAM ...
Page 68: ...3 55 10 LEVEL SHIFTER CEC EFUSE BLOCK DIAGRAM ...
Page 69: ...3 56 MEMO ...
Page 71: ...3 60 3 59 2 POWER TIMER USB CIRCUIT DIAGRAM ...
Page 72: ...3 61 3 62 3 MT8520 1 CIRCUIT DIAGRAM ...
Page 73: ...3 63 3 64 4 MT8520 2 CIRCUIT DIAGRAM ...
Page 74: ...3 65 3 66 5 KEY CIRCUIT DIAGRAM ...
Page 75: ...3 67 3 68 6 TIMER CIRCUIT DIAGRAM ...
Page 76: ...3 69 3 70 7 DDR2 SDRAM CIRCUIT DIAGRAM ...
Page 77: ...3 71 3 72 8 NAND FLASH ETHERNET CIRCUIT DIAGRAM ...
Page 78: ...3 73 3 74 9 AV HDMI CIRCUIT DIAGRAM ...
Page 79: ...3 75 3 76 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Page 80: ...3 77 3 78 2 SMPS P C BOARD TOP VIEW BOTTOM VIEW ...
Page 105: ...4 24 MEMO ...
Page 106: ...4 26 4 25 CIRCUIT DIAGRAM ...
Page 108: ...4 29 4 30 PRINTED CIRCUIT BOARD DIAGRAMS TOP VIEW ...
Page 109: ...4 31 4 32 BOTTOM VIEW ...