Roadstar lcd 5607 schematic
R
- LCD-5607
- LCD-5607
LCD-5607
Service Manual
Service Manual
Fault description•No color or AV no color.
n
NO.
Check if signal inputting is black and white or the
system can not meet with the model of TV.
No.
Check if Z301 4.43MHz illusive
jointing or damaged.
Check if capacitor C314(0.1UF)
damaged.
IC301 M52045 • plug ca
control the power or not.
No.
No.
Add jointing or replacement.
Ye s.
Check the voltage of IC201
CTV222S•plug output to IC301
for color control.
Check if other plug of IC301 M52045 or outside
components illusive jointing or IC damaged.
I
f the voltage of IC301
plug is too high.
Ye s.
•
Maybe signal is too weak,
No.
function of deleting color is on.
Ye s.
Fault description•no channel•no picture.•
d
t
g
f
r
t
r
d
d
Ye s.
If Brightness and contrast is
too high or too lower.
Adjust to regulation.
search•if all wave ban
has no channel.
Normal.
No.
unnormal.
Check 28V circuit IC601 •outside
34063•and control circuit of wave
band voltage outside the CPU.
Check if control voltage of all
wave band of T101 TEPZ5 is
normal when searching.
No.
Yes.
Check voltage o
wave band of tune
T101 TEPZ5.
Check the voltage control
circuit of outside the CPU.
yes
No.
Tuner is damaged.
no. yes.
Check powe
circuit.
no.
Check IC302
LM393 an
IC301 M52045
•24 • plug has
5V or not.
Ye s.
IC301 •plug has
no.
•
yes.
HD signal inpu
or not.
no.
yes.
Check if IC101M513498
plug has signal outpu
•18•
or not.
Check if AV socket J101
has video si
Check if IC 301 M52045••plug
has signal output or not.
nal or not.
outside circuit.
no.
Check if Q1012SC9018and soun
wave and IC and power illusive
jointing or not.
Check circuit of IC101
plug to AV socket.
•
No.
Check circuit around of capacitor C301•10UF/16V
R301 1•K•and Q301•2SC1815•.
•
Ye s.
r
Other outside circuit of IC301 o
IC301 is damaged.
continued
IC301 •••has
signal output or not.
To be continued
Yes.
If panel is damaged or not by replacement method•if panel is
damaged pls exchange the panel.
Check CN601 have
signals output or not.
No.
Circuit from IC301’s R•G•B signal to socket is break
d
r
d
V
m
Fault description•no power.
Check if transformer an
power has 12V or not.
No.
Yes.
exchange transformer o
battery pack.
Panel.
Check the problem is from panel
or PCB by replacement method.
Exchange the panel.
PCB
Yes.
Switch is damaged
or not.
Exchage the switch.
No.
No.
Check Q601 2SB1203 C
top has 12V or not.
Yes .
Yes.
Voltage of 2SB1203
B pole is low or not.
No.
no.
Check if CN601 has
12V or not.
2SB1203 is illusive jointing or damaged.
No.
yes.
Check 12
circuit fro
1K Resister connecte
with 2SB1203 B pole is
earth or not.
9601C to CN601.
n
Maybe the panel is
damaged.
If power butto
is damaged..
Resister is damaged or illusive jointing.
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