Samsung SDC-415 Series Service Manual page 41

MOTHER PCB
1
Check the +12V at the TP3
NA/PA MODEL : Check the SMPS module
If there is no +12V DC LEVEL at CN4 #4
the SMPS is bad
PROCESS PCB
Check the +12V at CN1 #1
Check the VBS signal on the CN1 #6
Check the Terminal Resistor at R108, R126
Check Output Voltage of the DDC Block
Check +12V at L5 (CCD SIDE)
Check +15V at L1 (DSP SIDE)
Check +5V at L4 (DSP SIDE)
Check -7.5V at L3 (DSP SIDE)
Check +3.2V at C54 (CCD SIDE)
Check +1.8V at L112 (DSP SIDE)
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
Check the SMPS module
NO
Connector connector exactly
NO
Set DC/VIDEO S/W to "DC"
NO
Check the R108, 126
NO
Check the +12V line
NO
Check the +15V line
NO
Check the +5V line
NO
Check the -7.5V line
NO
Check the +3.2V line
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