MDC-1810P/1820P Series
Chapter 8
Operation Manual
Trouble Shooting And On Board Servicing
8. Others
The display synchronization
is unstable.
N
46.9us
16.66 ms
1.04
µ
s
Are the following sync signals present at TP12 and TP13 in Main
Logic PCB.
5 V
0 V
0 V
5 V
[TP13]
[TP12]
15.6
µ
s
N
Is the LVDS signal presented at
the J218 and J219 connector?
Y
Main Logic PCB is faulty.
Y
LCD monitor unit is faulty.
Main Logic PCB is faulty.
Texts and graphics displays are faulty.
Main Logic PC B is faulty.
9. Antenna unit
+12V line is shorted.
Y
Disconnect P6(J6) from the
Modulator PCB. Is the fault
removed?
Y
N
Disconnect P5(J5) from the
Modulator PCB. Is the fault
removed?
N
Y
Disconnect P1(J1) from the
Modulator PCB. Is the fault
removed?
IF PCB is faulty.
N
Performance Monitor is faulty.
Internal wirings in the
Antenna unit or Display unit
is faulty.
Modulator PCB is faulty.
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