Sony KDL-40SL140 Training Manual page 32

B
Unit will Not
Power-ON
Press
TV & Remote
POWER
Button
Does
"Power" LED
illuminate
GREEN?
Confirm Unit is
securely plugged into
an active AC Outlet
Is
110VAC Present
At CN6000?
Check Main Fuse
F6001
(0 ohms)
Is Fuse
Open?
CTV-51
KDL-40, 46SL140 Power-ON
Troubleshooting Flowchart B
NOTE: Confirm all connections
between circuit boards before replacing
Primary – Mostly Defect
▲
Secondary – Possible Defect
■
Last Resort – Improbable Defect
Confirm Remote
Control Operation
What is the
Yes
State of the
"Power" & "Timer/
PIC" LEDs?
"Timer/PIC" Red LED
No
Blink Pattern
GO TO
FlowCharts C1, 2, 3
Protection Modes
OK
No Repair AC Outlet or
Replace AC-Power Cord
Yes
IP5Z-Board
Replace
Yes
IP5Z-Board
No
"Power" Glows Steady
Green
Initial Power -ON OK
Troubleshoot Video ,
Backlight , Panel, or Audio
Problem
Triage Charts & Troubleshooting Flowcharts
Check STBY 3.3V
at CN6150/pin 3
IP5Z-Board
Is voltage Disconnect
No
3.3V CN6150 at
Present? IP5Z-Board
Yes
Check STBY 3.3V
again at
▲
Replace CN6150/pin 3
BM5-Board
Is voltage
Yes
3.3V
Present?
No
Replace
IP5Z-Board
31