Chapter 5 Troubleshooting and on board repair
MDC-5000 Series
5-18
0092653004-00
+250 V and frame is
shorted.
Pulse width control
failure
TP_PLUSE_W shape
A
B
5 V
0 V
Pulse length A (us) B (ms)
L2
1.4
1.5 to 1.6
Does status recover by
disconnecting P2 (J2)
connector from modulator
PCB?
No
Antenna unit wiring failure
Yes
Modulator PCB failure
No
Yes
Is transmitter unit drive signal
(modulator PCB TP_PLUSE_W)
normal?
Modulator PCB failure
Yes
Modulator PCB
failure
Is +24V (Control PCB Pin
J2-1) normal?
Antenna unit wiring
failure
No
Please check the following points and measure.
1) Rope is winding around antenna.
2) Failure of rotating mechanism such as
“Gear unit”
Failure of motor,
failure wiring in Antenna unit
or failure of Processor unit power
No
Yes
No
Change fuse with a
new one.
End
Is antenna rotating normally?
Yes
No
Can antenna rotate by hand?
Is Processor unit motor
fuse blown?
Yes
Antenna does not rotate.
1
Содержание MDC-5004
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