MRC MCX-5000 Series, Manual

Page: 39 / 220

MARINE RADIO CO.,LTD.
주
/
선박무선
Subject : Auto Exchanger Page : (38 / 46)
Date : 2010.10.13 Doc. : MCX-5000S_ENG_R1
(QAS-ADD-008/1/10.10.13) manual\pabx\mcx-5000S\MCX-5000S_eng.doc
( MARINE RADIO CO., LTD.) MRC
Status Symptom and Fail
Unit
Check Point
No link
of some
tel.
2. The line(L1/2,
DC-24V) voltage is
normal but no link.
The
Telephone
1. Check the telephone cable and connector.
2. Replace the telephone.
3. The side tone is
normal but no signal
tone.
I/O Sw
Board
1. Check the matching trans(T1-8) of related
I/O sw board.
4. The side tone is
heard.
The
Telephone
1. Check the Tx/Rx unit.
5. The signal tone is
normal but no dial
function.
The
Telephone
1. Check the dial PCB of the telephone.
6. The voice of other
party isn't heard.
The
Telephone
1. Check the Rx unit of the telephone.
7. The voice to other
party isn't sent.
The
Telephone
1. Check the Tx unit of the telephone.
8. The ring signal of
the tel. is fail
The
Telephone
1. Replace the telephone.
9. The voice of other
party isn't heard
sometimes.
The
Telephone
1. Check the handset cord or connector.
10. The voice of another
party is mixed.
I/O Sw
Board
1. Check the IC1(M093) of related I/O sw
board.
2. Replace the board.
Paging
Fail
1. Don't link the P/A. Dial Tone
1. Check operation of the IC29.
2. Check related cable and connector.
2. Don't be heard a
introduction melody.
Dial Tone 1. Check operation of the IC13 - IC16.
3. The melody is normal
but no voice signal.
Dial Tone
Board
1. Check operation of the IC13 - IC16.
Earth
lamp
of
engine
room
is on.
1. When DC converter is
separated in main unit,
then the system is good.
Sw
Regulator
1. TR1/2/3/8/9 of DC/DC converter & voltage
regulator IC insulation is failure.
2. When DC converter is
separated in main unit,
then the system is bad.
All
System
1. Try to separate of I/O sw Board and
other PCB.
3. When the all of the
PCB is separated in
main unit, then the
system is good.
Rectifier
Unit
1. Check insolation of the noise filter (FL1/2).