25
4.3.2 sub frame
4.4 No picture of SCART2
Check if the pin16 of N801
have the signal input.
Check if H and V sync clock
signal of N801 output is normal.
Check if the pin12 of TUNER102
in TV board has the signal output.
Check the
peripheral
circuit of N201,
crystal and
power supply.
Yes
No
Yes
No
Check the peripheral
TUNER102, power
supply and BUS
Check between
the TUNER102
and N801 circuit
Yes
No
Check the
peripheral
circuit of N801,
crystal and
power supply.
Check if the C228 and C229
have the signal input.
Check if the pin 3 and pin6 of
N708 has input signal.
Check periphery circuit of N201,
crystal and power supply
Check between the SCART2
socket and N708 circuit
Check peripheral circuit of
N708 and power supply
Yes
No
Yes
No