Troubleshooting
Samsung Electronics
5-1
5. Troubleshooting
5-1 No Power (No Picture on)
Yes
Check
both terminal voltages
of C814
Check both
terminal voltages of
C806 (280~300V).
Check D801S
FB801S
No
Is IC801S Pin 3
19~22V?
Check IC801S
Check/Replace
DZ801,DZ804,
DZ802,PC801S
No
Yes
No
Yes
Check
Voltage of 8V, 12V, 6V,
20V power line..
Check whether
each power line
is short or open.
No
No
Yes
Is Q805-E
Output Voltage 5V?
Is Q901-E
Voltage 3.3V?
Check/Replace
Q901, DZ901, D901
Check
Q811-B is High
when power is On
(about 0.6~2.0v)
Check/Replace
IC902
Check /Replace
Q810, Q812, DZ805
Yes
Yes
No
No
Yes
Summary of Contents for CFTD2085X/SMS
Page 9: ...Samsung Electronics 3 1 2 Specifications ...
Page 10: ...MEMO 3 2 Samsung Electronics ...
Page 101: ...8 4 Samsung Electronics MEMO ...
Page 102: ...Schematic Diagrams 9 1 Samsung Electronics 9 1 MAIN 1 9 Schematic Diagrams ...
Page 103: ...Schematic Diagrams Samsung Electronics 9 2 9 2 MAIN 2 ...
Page 104: ...Schematic Diagrams Samsung Electronics 9 3 9 3 MAIN 3 ...
Page 105: ...Schematic Diagrams 9 4 Samsung Electronics 9 4 MAIN 4 ...
Page 106: ...Schematic Diagrams 9 5 Samsung Electronics 9 5 POWER BLOCK ...
Page 107: ...Schematic Diagrams 9 6 Samsung Electronics 9 6 DEFLECTION BLOCK ...
Page 108: ...Schematic Diagrams 9 7 Samsung Electronics 9 7 INTERFACE BLOCK ...
Page 109: ...Schematic Diagrams 9 8 Samsung Electronics 9 8 CRT BLOCK ...
Page 110: ...Schematic Diagrams 9 9 Samsung Electronics 9 9 Main Micom ...
Page 111: ...Schematic Diagrams 9 10 Samsung Electronics 9 10 AV Decoder ...