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3
Yes
Check to see if the voltage of
pin 15 and pin16 of N201 is
normal
Yes
Change N201 and
repair circuit
Normal
4.
Not exist
Check to see if RAGC is
Yes
Enter D-MODE with
customer remote controller.
Make RAGC tuned to 25 or
so. Noise on picture just
disappears.
All manuals and user guides at all-guides.com
Horizontal bright line
Make R401 open. Multimeter is at range RΧ1K. Red probe
connects to ground. Touch No.5 of N401 with black probe.
Bright line flashes for a moment
No
Check to see if the deflection
Inspect N201
and peripheral
yorks are connected, C408 is
components of
peripheral component of N401
N201
No sound and picture
Snowy noise exist
at 00 mode
No
Inspect Z101、
N201and PIF part
27
Check to see if voltage of pin2 at
N401 is normal
Yes
open or weldless. Inspect
and N401 itself
Check to see if voltage
output available at tuner
Yes
Antenna
or tuner is
abnormal
No
No
Inspect +28V
power supply
Exist
No
Inspect the
circuit from
CPU to tuner
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