Sony KDL-40SL140 Training Manual page 38

NOTE: Confirm all connections between
circuit boards before replacing
Reference Figures 3-1 & 3-2
for Test Point Locations
All Video Inputs :
Video 1 Composite & S-Video
Video 2 Composite
Video 3 Composite
Component 1, 2
HDMI 1, 2, 3
PC IN
ATSC/NTSC (Tuner)
Audio Outputs
VAR/FIX Audio
Optical
CTV-51
E
Missing or Distorted Audio
(Speaker Outputs )
Is Audio
No
Missing or Distorted
on All Inputs ?
Yes
Check
Fix Audio Output
No Replace
Is Audio
Present? BM5-Board
Yes
Check
Voltage from Power Supply
at CN4001/pin 1
▲
No
Is 13V Replace
Present? IP5Z-Board
Yes
Triage Charts & Troubleshooting Flowcharts
KDL-40, 46SL140 Missing or Distorted Audio
Troubleshooting Flowchart E
Check External Device
and Connections External Device
Swap Devices and & connection OK
connections
Repair External
Speaker Resistance at
CN9800 (or across Speakers )
& Connections
Connections
Replace
BM5-Board
Is
Yes Replace
BM5-Board
?
No
Device
Check
8 ohms
No
& Replace
Speaker(s)
OK?
Yes
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