Information Required For Service; Self Diagnosis Functions Provided; Alarm Messages - Koden MDC-1840BB Operation Manual

MDC-1840BB/1841BB/1860BB/1810BB/1820BB Series
Operation Manual
Chapter 8 Trouble Shooting And On Board Servicing
This chapter covers simplified fault locating procedures to enable faulty areas to be
identified on your vessel.

8.1 Information required for service

Please advise the following details:
(1) Name of vessel, Satcom number if available.
(2) Equipment type name
(3) Equipment serial number
(4) Software type name, shown on the standby screen and stated in this manual.
(5) Next port of call, ETA and ship's agent
(6) Faulty conditions and the result of on board check

8.2 Self diagnosis functions provided

The equipment provides on-screen alarm messages and the status indicator inside
the display unit.

8.2.1 Alarm messages

The following alarm messages will be shown as a result of diagnosis by the built-in
self-check function if the equipment becomes faulty. Details are as follows:
Table 8.1 Alarm messages shown on the screen
Alarm messages
ANTENNA ABNORMAL
(NO RESPONSE)
AZIMUTH ABNORMAL
HEADING LINE ABNORMAL
TRIGGER ABNORMAL
MAGNETRON CURRENT
ABNORMAL
250V ABNORMAL
MAGNETRON HEATER
CURRENT ABNORMAL
93142122-07
Trouble Shooting And On Board Servicing
Faults detected
Communication between Antenna and Display is
faulty. Suspect no Antenna connection.
The azimuth pulse signal is erratic in timing or
frequency or no signal input to the display.
The Heading Line signal is erratic or no signal
input to the display.
Master trigger pulse is erratic in timing and level or,
not present at all.
Magnetron current is not within specified range.
High voltage supply for Modulator Unit is not within
specified range.
Magnetron heater current is not within specified
range.
Chapter 8
8-1