Sony KLV-40ZX1M Training Manual page 27

1) All Red Blink patterns will occur on the Front
Panel Red Power-LED
2) All voltage are measured prior to unit shutdown
3) Confirm all connections between circuit boards
before replacing
Check voltage
levels before
shut-off
CTV-54
NOTES:
Unit Shuts OFF
RED Power-LED
2X Blink Pattern
(Power Error )
Check 12V at
CN6159/pin 3 & 5
*Before Shutdown
Is voltage
No
12V
Present?
Yes
Replace
GS1-Board
Is Level
Yes
Greater-Than 12V
?
No
Check
"POWERON" at
CN6157/pin 1
Is voltage
▲
No
Replace
3V
B-Board
Present?
Yes
Replace
GS1-Board
KLV-40ZX1M Protection Mode
C1
Troubleshooting Flowchart C 1
Primary – Mostly Defect
▲
Secondary – Possible Defect
■
Last Resort – Improbable Defect
Blinking
Troubleshooting Flowcharts
3X Blink Pattern
(Regulator Error )
Check connection between
GS1-Board & B Board
Is
No Repair
connection
Connection
OK?
Yes
Replace
B-Board
FLOWCHART C1: PORTECTION MODE
FIGURE 3-4
26