Samsung PD22EO - Page 15

CONFIDENTIAL
LW22A13W 5-1
5 Troubleshooting
5-1 No Power
Does proper DC 14V
appear at Pin 1 of CN205?
Change a 14V adaptor. (BN44-00051C)
LAMP off, Power indicator LED off.
Yes
Yes
No
Check a connection the 14V adapter?
No
Does proper DC 14V
appear at C847?
Check a connection the 6 Pin hamess and
change a input board assy. (BN59-00339A)
Yes
No
Does proper DC +3.3V_A,
+3.3V_B appear at
C826, C867?
IC801 or IC805 are bad.
Change main assy. (BN94-00400A)
Yes
No
Does proper DC +2.5V_A,
+2.5V_B appear at
C827, C813?
IC802 or IC806 are bad.
Change main assy. (BN94-00400A)
Yes
No
Does proper DC +5V_A, +5V,
+5V_LVDS appear at
C889, C865, CP133?
IC810 or IC804 or ICP22 are bad.
Change main assy. (BN94-00400A)
Yes
No
Does proper DC +12V_3
appear at C841?
ICP23 is bad.
Change main assy. (BN94-00400A)
Yes
No
Does proper DC +8V
appear at C843?
IC843 is bad.
Change main assy. (BN94-00400A)
Yes
No
A power is supplied to set.
Check a other function. (No picture part)
Replace a assy LCD panel. (BN91-00388L)
No
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