Koden MDC-2200 series, Руководство по установке

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MDC-2200/2500 Series Chapter 6 Troubleshooting and on-board repair
0092625002-07 6-17
1
Yes
Change motor brushes with new set.
Yes
Yes
No
No
Yes
Yes
No
Modulator unit
PCB failure
No
Is motor brush length within
nominal value (at least 6 mm)?
Motor failure
Error message “Error,
No echo and azimuth
signal” is displayed.
Is “synthesized bearing
signal pulse” of
modulator PCB J1-7 Pin
normal?
Modulator unit
PCB failure
Failure of wiring
in Antenna unit,
or failure of
Display unit
Failure of photo
interrupter in
pulse generator
Error message “Error, No
echo, heading line signal” is
displayed.
Is “synthesized bearing
signal pulse” in the
modulator PCB J1-7
normal?
(See the figure above.)
Is “heading signal
pulse” in the
modulator PCB J3-1
normal?
3 msec
Is “bearing signal pulse”
of modulator PCB J4-2
Pin normal?
10 ms
0 V
5 V
Failure of motor power or wiring in
Antenna unit, or failure of Display
unit power
Yes
Is motor drive power (12V for J4-5
to J4-4) normal?
No
No
Heading signal
1.2 msec
Bearing signal
5 V
2.5V
0V
J1-7 synthesized
bearing signal pulse
Failure of wiring in Antenna
unit, or failure of Display unit
Reed switch failure