11
3-1. NO POWER
SECTION 3
TROUBLESHOOTING
Troubleshooting
3-1-1 No Power – LD Board
No Power
Check Fuse
F1000
B* Board
OK
NG: DC Voltage is 0V
DC/DC converter check
NO POWER: MUFFIN
Check 19.5V_SS
JL1000
MOSFET Q1003
broken
NG: DC Voltage is 0V
Check connection
harness
CN4001
OK
OK
Symptoms
Symptoms
Check DIODE
D1001
DIODE D1001
broken
NG: Diode are shorted
FUSE F1000
broken
OK
Check Fuse
12V DDCON
F9104
OK
FUSE F9104
broken
NG: DC Voltage is 0V
Size
B* Board
G* Board
H* Board
43”
BMX
Not applicable
HSC3_S_M
50”
BMX
Not applicable
HSC3_S_M
55”
BMX
Not applicable
HSC3_S_M
Summary of Contents for KDL-50W7 C Series
Page 2: ...LCD TV SERVICE MANUAL COMMON GN1G CHASSIS Segment XM A ...
Page 16: ...16 BMX Board PWB A side Detail 3 3V_MAIN C9005 PIN1 Q9002 ...
Page 28: ...28 Troubleshooting BMX B Side JL9008 3 2 5 LED BLINKING 6x Backlight Error ...
Page 43: ...43 Troubleshooting BMX Probing Points BMX B Side JL8401 PANEL_VCC ...
Page 44: ...44 Troubleshooting F8401 12V_REG BMX Probing Points BMX A Side ...
Page 45: ...45 Troubleshooting IC9013 Pin 4 BL_ON BMX Probing Points BMX A Side ...
Page 46: ...3 4 1 Video Analog Signal Path 46 ...
Page 49: ...49 C6302 R6069 R6303 BMX BOARD A Side Troubleshooting ...
Page 52: ...52 BMX BOARD A Side C6302 R6069 R6303 Troubleshooting ...
Page 54: ...54 BMX BOARD A Side R6016 R6015 C6004 R6001 C6005 R6002 Troubleshooting ...
Page 55: ...55 R6321 R6322 BMX BOARD A Side Troubleshooting ...
Page 57: ...CN5401 R5425 R5427 R5424 RB5405 RB5406 RB5407 RB5408 57 BMX A side HDMI1 Troubleshooting ...
Page 65: ...R5445 R5444 R5443 R5424 65 BMX A side Troubleshooting ...
Page 69: ...R1124 R1062 69 BMX A SIDE Voltage check IR Muffin Pin ...
Page 71: ...R1061 71 BMX A SIDE Voltage check Opt_Sensor Muffin Pin ...
Page 94: ...94 5 3 Connector Diagram Diagrams 5 3 1 43 ...
Page 95: ...95 5 3 Connector Diagram Diagrams 5 3 2 50 ...
Page 96: ...96 5 3 Connector Diagram Diagrams 5 3 3 55 ...
Page 97: ...97 English 2015 07 Sony EMCS Malaysia Sdn Bhd RDCM 9 888 172 04 ...