Samsung DVD-R130/XAA, Service Manual, Page: 38 / 134

Troubleshooting
5-6 Samsung Electronics
Pin 3 In IC702
Has about p-p 1V level?
Pin 7 In IC702
Has about p-p 1V signal?
Change Main PCB
Check the connection between
Pin 3 in IC702 and L1 Pin-Jack.
Check Pin 7 in IC702
of input power(5V).
No
No
Pin 2 / 4 in IC702 is
In Low and high state
Respectively?
No
No
No
Check the connection between Pin 2 and
Pin 4 in IC702 and Pin 92 and 91 in IC601.
Pin80 in VIC1 of Main PCB
has about p-p 1V level?
Pin40 and pin 54~43 in VIC1
of Main PCB has Clock and
Digital Video Signal
normal form ?
Check the connection between Pin 80 in
VIC1 of Main PCB and Pin 7 in IC702.
Check VIC1 of Main PCB
peripheral circuit. .
Yes
Yes
Yes
Yes
Yes
AV1 CVBS Video Input Error
Pin9/10
L/L : RF Signal
L/H : Line1
H/L : Line2
H/H : Reserved
CVBS(Color -bar)
A