Troubleshooting
Samsung Electronics
6-5
6-6 No FAN Voltage (+8V)
No
No
Yes
Yes
Check
the voltage of
IC805 pin 5 (12V)
Check /Replace
IC805 Regulator
IC (SI-3050C)
Check the voltage
of T801 pin12
Check L811,
D821, C836
Check
T801/Replace trans
6-7 Lamp Does Not Work
Yes
No
No
Yes
Standby/Temp LED,
Picture LED, Lamp LED flicker at
the same time? Or, check the lamp
time (6000 hrs)
Check/Replace
Lamp
Check
the DC voltage of BALLAST
(about 300V)
Check the voltage
of AB1 (connector) pin1 on the
Main Board (over 3.5V)
Check F801 (on the
Power Board), D803, and
surrounding circuitry
Check the voltage
of IC904(SAA1300) pin 6
(over 3.5V)on the Main Board
Check AB1 on the
Ballast Board
No
Yes
Summary of Contents for SP403JHAX
Page 56: ...Schematic Diagrams 12 2 Samsung Electronics 12 2 MAIN 2 Power Line Signal Line ...
Page 57: ...Schematic Diagrams 12 3 Samsung Electronics 12 3 MAIN POWER Power Line Signal Line ...
Page 58: ...Schematic Diagrams 12 4 Samsung Electronics 12 4 PROSCAN 1 Power Line Signal Line ...
Page 59: ...Schematic Diagrams 12 5 Samsung Electronics 12 5 PROSCAN 2 Power Line Signal Line ...
Page 60: ...Schematic Diagrams 12 6 Samsung Electronics 12 6 PROSCAN 3 ...
Page 61: ...Schematic Diagrams 12 7 Samsung Electronics 12 7 PROSCAN 4 ...
Page 62: ...Schematic Diagrams 12 8 Samsung Electronics 12 8 MAIN u COM ...
Page 64: ...Schematic Diagrams 12 10 Samsung Electronics 12 10 MAIN A V TERMINAL ...
Page 68: ...Schematic Diagrams 12 14 Samsung Electronics 12 14 MAIN SUB MASTER REMOCON PRE AMP ...
