XOCECO TQ2426, Руководство по обслуживанию

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16
Troubleshooting guide
1. no raster, no sound
2. with picture, without sound
If the power
indicator is
light?
Check if
FU501 is
melted?
Check if
C510 has
300V? Check D501
and its
periphery
Check N501
N502 and
their
periphery
There is short circuit
at primary or
secondary coil of
power
The light is red, press
POWER can’t turn on
the TV
Check if N102 56#
output high level
Check if it is X-RAY
protection
Press POWER to
turn on and the
light is blue
Check if N102 and
N101are normal
Refer to 2 and 3
Yes No
Yes
No
No
Yes
Check if sound
amplifier NV01 has
output
Speaker is
damaged
Check if NV01 power supply is
normal, if pin9 (mute) is high level
If NV01 pin 6 and
pin8 have input
signal Check if N102
46# and 48# have
output signal
Yes
Yes
No
No