3-31
ELECTRICAL TROUBLESHOOTING GUIDE
NO
No 3.3V
Check or Replace
the IC153
Check or Replace
the D123
Is the
Vcc(3.8V)
supplied to IC153
Pin1?
NO
Check the DVD CTL
“H” signal from µ-com
Is the
IC153 Pin4
“H”?
YES
YES
YES
NO
No 5V
Check or Replace
the IC152
Check or Replace
the D132
Is the
Vcc(5.5V)
supplied to D132
anode?
NO
Check the DVD CTL
“H” signal from µ-com
Is the
IC152 Pin4
“H”?
YES
YES
YES
NO
No 12V_A
Check or Replace
the IC151
Check or Replace
the D121
Is the
Vcc(13.5V)
supplied to IC151
Pin1?
NO
Check the DVD CTL
“H” signal from µ-com
Is the
IC151 Pin4
“H”?
YES
YES
YES
NO
No 12V_L
Check or Replace
the IC154
Check or Replace
the D121
Is the
Vcc(13.5V)
supplied to IC154
Pin1?
NO
Check the DVD CTL
“H” signal from µ-com
Is the
IC154 Pin4
“H”?
YES
YES
YES
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 ...