H-LCD700 Service Manual
1、FAULT DESCRIPTION: NO SOUND
Confirm the volume isn’t in silent mode before check.
Start
Check IC105 (5) plug
has audio output or not
YES
NO
NO
YES
YES
NO
NO
YES
Check IC101 accompaniment way
Check IC105 has
supply 12V or not
Check IC105 (3)
plug has audio
input or not
Check IC 201 (3) plug
VOL has voltage or not
Speaker damaged
Check power
Check IC105 and
the around circuit
Change IC201
1
H-LCD700 Service Manual
2、FAULT DESCRIPTION: REMOTE CONTROL
Yes
No
No
Reduce the distance
No
Yes
NO
Yes
NO
Yes
Connect to
the Earth
Check the power of
remote control is it
empty or damaged
The distance is it too far
Check receiver (3) plug
is applying 5V or not
Check the receiver (2)
plug is connect to the
Earth correctly
Check the receiver
(1) plug has remote
signal output or not
Check IC606 (10) plug has
signal input or not and the
around circuit
Start
Replace battery or
remote control
Yes
Check the circuit
power supply
Receiver damaged
2
H-LCD700 Service Manual
3、FAULT DESCRIPTION: NO COLOR
YES
YES
NO
NO
YES
NO
YES
Change IC201
Check the image & accompaniment
system is it correct; the function of
deleting color is on or not
Check the input signal is
it color mode of TV
Check IC101 (26) plug,
the color control plug has
voltage or not
Check Z111, Z112 is in
normal and is the
frequency correct
Check IC101 and
around circuit
Start
Reset the image and
accompaniment system
Check C163,
C164, Z111,
Z112
3