Samsung DVD-P401, Manual

Page: 28 / 63

Troubleshooting
Samsung Electronics 3-7
CVBS output error
27MHz clock
input is normal at
pin 159 in ZIC1?
Digital output
is normal at pin 21~30
in ZIC1?
Check the connection between
pin 6 in ZIC4 and pin 129 in ZIC1.
Check the soldering of ZIC1.
Yes Yes
No No
Analog signals are inputted normally
pin 2 in VIC3?
Yes
No
Power is
normal at pin 1, 28
in VIC3?
Yes
No
Pin 7 in VIC3
is in high stste?
Yes
Analog output
is normal at pin 30
in PIC7?
Check the soldering of PIC7.
No
Yes
Check the connection netween
pin 30 in Pic7 and VIC3.
Check the connection betwen
VIC3 and PICS4-2.
Check the connection between
VIC3 and VSW1-6.
Check the soldering of VIC3.
No No
Check the connection between
VIC3 and output jack.
Pin of VDD_2.5 &
VDD-3.3 in Zic1 has
normal level?
Check the connection between
pin 1 in PCNS1 and pin 3 in ZIC5.
Yes
No
Peak to peak
voltage level of pin 27
in VIC3 is 2V?
Video signal of
about 1V appears at
output jack?
Yes
No
Yes
Check the RCA cable.
D
Y/Pr/Pb output error
(Interface)
VSW1 video select
switch is down position?
VR121 of VSW1
is high state?
Move the select switch to down position.
Check the soldering of VSW1.
Yes
No No
Pin 6 in PIC8, 9, 10
is high state?
Check the connection between
PIC8, 9, 10 and VR121.
Check the connection between
PIC8 and VIC2.
Yes
No
Yes
Analog input
is normal at pin 2, 4, 7
in VIC2?
Peak to peak
Voltage level of pin 15, 13, 10
in VIC2?
Check the soldering of VIC2.
Yes
No No
Video signal of
about 1V appears at
output jack?
Check the connection between
VIC2 and output jack.
Yes
No
Yes
Check the RCA cable.
E