Sanyo PDP-63XR7HB, Service Manual

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4.3 No picture of TV channel
First you should make sure that the problem exits in mainframe or sub frame by using the PIP
function
4.3.1 mainframe
4.3.2 sub frame
Check NS01 peripheral circuit.
4.4 No picture of YPBPR 1/2
Check if the CS15 have the
signal input.
Check if the pin12 of TUNER1
has output signal. Check periphery circuit of NS01,
crystal and power supply
Check the periphery circuit
of TUNER1, power supply
and bus line
Check the circuit between
TUNER1 and NS01
Yes
No
Yes No
Check if the pin4, pin7
and pin9 of NB05 have
signal input
Check if the CS04, CS05 and CS06
have the signal input
Check the peripheral
circuit of NS01, crystal
and power supply
Check if the pin2, 5, 11/3, 6, 10
of NB05 have signal input
Check the channel
between NB05 and NS0l
The channel between
YPBPR socket and
NB05 has problem Check the peripheral
circuit of NB05 and
power supply
No Yes
Yes No
No Yes