Service Modes, Error Codes, and Fault Finding
EN 16
TCM2.0E LA
5.
Figure 5-13 Picture OK, No sound
Figure 5-14 No colour
Picture OK, No
s
ound
Check the volta
g
e of
Pin
3
,1
3
of u600,i
s
it 12v?
Check Q800
Check the wave of
pin186,185 of
U20
3
,i
s
it OK?
Check
R & L
s
peaker
Check the wave
of Pin of
s
ource
input,
s
uch a
s
pin170~177.
Check
Pin 7 of U600 i
s
6V
No
Check C of Q602 i
s
5V,B of Q602 i
s
Low
OK?
Ye
s
No
Check
s
tby
Pin 7 & Mute Pin6 of U600,i
s
it OK?
Ye
s
Ye
s
Replace
u20
3
Ye
s
NO
Ye
s
Chan
g
e the
dama
g
e
component
No
No
Ye
s
Check IF circuit
or Replace
U100
TV
s
ource
Check
the input circuit
No
NO
Replace U600
I_17950_012.ep
s
0
8
050
8
No colour
Colour
s
y
s
tem i
s
Ri
g
ht & another
channel colour i
s
ri
g
ht ?
Do
s
e the TV
s
i
g
nal too weak?
Check
Pin 17 of U100
OK?
Check
U100
Re
s
et
To
Local
s
y
s
tem
Check
Tuner Input
cable & antenna
Check E2PROM
U205
Ye
s
NO
NO
No
YE
S
YE
S
Fine Frequency
YE
S
I_17950_01
3
.ep
s
0
8
050
8