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1. POWER SWITCH

1. POWER SWITCH

2

Push the power switch "on", than power LED indicator is turn on.

3. GROUND  FAULT INDICATOR OFF SWITCH

This is LED indicator which is indicating of speaker line situation.

LED indicator will be flashed when ground fault, recommend not 

to switch "OFF" under the normal situation.

4. AMP FAULT LED

Indicating of spare amplifier operating situation when spare amplifier

is out of oder.

6. GROUND FAULT LED

LED indicator is flashed when speaker line is grounded.

9. AMP FAULT

When main amplifier is out of oder or not connecting which amplifier,

AMP FAULT LED will be flashed.

8. RESET

This is a compulsory "OFF" against operating of amp fault LED.

This is for protection against mis operating to push reset switch of 

channel which is not connected amplifier.

7. SIGNAL LEVEL

This is volume control of input signal from amplifier.

Recommend volume control of amplifier at 2~3 o'clock towards and 

adjust speaker volume by master level.

5. FAULT SIGNAL IN SWITCH

Fault signal in switch "ON" will make supply of fault detecting signal

and turn on fault signal LED.

When operating more than 8main ampl1spare amplifier, if you

push "IN" switch of spare amplifier, than fault signal will be supplied to

spare amplifier.

2. BUZZER OFF SWITCH

Buzzer makes sound automatically when amplifier is out of oder

or speaker line is grounded, if you do not want buzzer sound, 

push buzzer "off" switch

주전원 스위치로서 누르면 전원이 공급되고 POWER LED가 켜집니다.

2. BUZZER OFF SWITCH

파워앰프가 고장 또는 스피커 신호가 접지되면 부저 경고음을 발생
하게 됩니다.
사용시 이 스위치를 누르지 않은 상태로 사용하십시오, 경고음 발생
시 이 스위치를 누르면 경고음이 멈추게 됩니다.

3. GROUND FAULT INDICATOR OFF SWITCH

스피커 신호가 접지된 채널 GROUND FAULT LED가 깜박이게 됩니다.
사용시 이 스위치를 누르지 않은 상태로 사용하십시오.

4. AMP FAULT LED

예비 앰프의 동작 상태를 알려주는 LED로서 예비앰프가 고장났을 경우에

LED가 깜박입니다.

6. GROUND FAULT LED

앰프의 스피커 선로가 접지되면 이 LED가 깜박이게 됩니다.

9. AMP FAULT

주앰프가 연결되지 않거나, 고장일 경우에는 "AMP FAULT LED가
깜박이게 됩니다.
FAULT LED가 동작되는 순간 예비앰프쪽으로 앰프의 입,출력신호
가 전환 되도록 설계되어 있습니다.

8. RESET

AMP FAULT LED 동작을 강제적으로 OFF시키는 기능입니다.
이 기능은 앰프가 연결되지 않는 채널의 RESET스위치를 눌러
AMP FAULT LED가 ON되지 않도록 하여, 운용시 혼란을 방지하기
위한 수단입니다.

7. SIGNAL LEVEL

앰프에 공급되는 신호의 레벨을 설정하는 볼륨입니다.
통상운용시, 앰프 자체의 볼륨위치를 2 3시 방향으로 설정하고,
SIGNAL LEVEL볼륨으로 시스템의 스피커 음량을 결정하는 마스터
레벨로 조정 하십시오.

5. FAULT SIGNAL IN SWITCH

누르면 예비앰프에 고장진단 신호가 공급되고 FAULT SIGNAL LED가
켜집니다.
1:8이상 확장 운용시 예비앰프 채널중 1개만 "IN" 스위치를 누르면
고장진단 신호가 예비 앰프에 공급되도록 설계되어 있습니다.

CAUTION : 

Be sure to use, JFA-242U under not pushing  reset switch

for operating  amplifier.

중요사항 : 운용시 앰프가 연결된 채널의 RESET스위치는 누르지

않은 상태로 운용하십시오.

F

RONT PANEL CONTROLS 

(전면기능)

RESET

AMP FAULT

RESET

RESET

RESET

SIG LEVEL

RESET

RESET

RESET

RESET

GROUND FAULT

INDICATOR OFF

BUZZER OFF

SIG LEVEL

SIG LEVEL

SIG LEVEL

SIG LEVEL

SIG LEVEL

SIG LEVEL

0

10

SIG LEVEL

0

10

0

10

0

10

0

10

0

10

0

10

0

10

IN

FAULT SIGNAL

IN

GROUP-A

GROUP-B

 

 

FAULT AUTO EXCHANGER  

JFA-242U

AMP 1

AMP 2

AMP 3

AMP 4

SPARE AMP SPARE AMP

AMP 1

AMP 2

AMP 3

AMP 4

GROUND

FAULT

GROUND

FAULT

GROUND

FAULT

GROUND

FAULT

GROUND

FAULT

GROUND

FAULT

GROUND

FAULT

GROUND

FAULT

AMP FAULT

AMP FAULT

AMP FAULT

AMP FAULT

AMP FAULT

AMP FAULT

AMP FAULT

AMP FAULT

AMP FAULT

FAULT SIGNAL

POWER

8

9

7

6

4

5

3 2

1

Summary of Contents for JFA-242U

Page 1: ...WWW JEDIA COM FAULT AUTO EXCHANGER JFA 242U...

Page 2: ......

Page 3: ...ot bending curved Do not install this apparatus in a confined space such as a book case or similar unit Locate this apparatus away from heat source such as radiators or other device that produce heat...

Page 4: ...main amplifiers 1spare amplifier if you push IN switch of spare amplifier than fault signal will be supplied to spare amplifier 2 BUZZER OFF SWITCH Buzzer makes sound automatically when amplifier is o...

Page 5: ...MINAL Connect this to output terminal of amplifier Br sure to connect amplifier built inoutput transformer if not ground fault LED will be turn on 4 SPEAKER TERMINAL Connect this to terminal of amplif...

Page 6: ...DEL NO JFA 242U POWER CHECK NON PULSE FAULT CHECK NON PULSE FD 20 SLOT Priority Relay COM N O N C Ground Lift AC POWER REMOTE SERIAL NO G COM 25V 50V 100V COM 1 3 5 2 20 8 AC 230V 50Hz 1420W MODEL JPA...

Page 7: ...S 232C UNIT NO RESET DC INPUT SUM OUTPUT 24V INPUT CHECK SIGNAL CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 CH 9 1 8 CH 10 CH 11 CH 12 CH 13 CH 14 CH 15 CH 16 1 8 9 16 9 16 NON PULSE PULSE CHANNEL USE OFF...

Page 8: ...EQUIPMENT TO RAIN OR MOISTURE 480DPT G Off Fault On Normal G GND OUT PRI CTL 24V 400Hz Normal FD20 Max 0 5A 0dBu 0 775V Priority Input 60k BAL 0dBu 0 775V PGM Input 60k BAL Level 0 10 DC POWER 24V 40...

Page 9: ...espones Less than 0 5dB 20Hz 20KHz Signal to Noise Ratio More than 86dB No test signal 1 1 Level variable Power option AC 120V 220V 230V 240V 50 60Hz DC 24V Dimensions Weight 4 2Kg 9 3Ibs 483 W x 88 H...

Page 10: ...F D R F D R VCC BUZZER GROUND FAULT LED OFF A SPARE AMP INPUT A SPARE AMP OUTPUT B SPARE AMP INPUT B SPARE AMP OUTPUT 2 3 4 2 3 4 SPARE AMP EXT FAULT SIGNAL OUT GROUP A GROUP B DC FUSE POWER SWITCH P...

Page 11: ...M EMO...

Page 12: ...JFA 242U OPERATING INSTRUCTIONS 4M OP207090 080106 FAULT AUTO EXCHANGER...

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