Aiphone LEF3510 Instructions User Manual

							– 11 –
 9 LEF-10S with BG-10C and 1 Door Station
  2 LEF-10 with 9 Door Stations and Selective Door Release
: PS-1225UL, PS-1225S, 
  PS-1225, PS-1215DINPS12
: PT-1210N in North America 
  or AC trans.PT
PTPTPTPTPTPTPTPTPT
: PS-1225UL, PS-1225S, PS-1255, PS-1215DINPS12
56789DA11
ERY+–
1
E
–
P1P2P3
DC IN
+–
321
4
56789101
ERY+–LP1P2P3
32C 4
BG-10C LEF-10S #1
1
E
–
1
E
1
E
1
E
1
E
1
E
1
E
1
E
1
E
56789102
ERY+–LP1P2P3
3C1
4
LEF-10S#2
56789103
ERY+–LP1P2P3
C21
4
LEF-10S#3
56789104
ERY+–LP1P2P3
321
C
LEF-10S#4
C6789105
ERY+–LP1P2P3
321
4
LEF-10S #5
5C789106
ERY+–LP1P2P3
321
4
LEF-10S #6
56C89107
ERY+–LP1P2P3
321
4
LEF-10S #7
567C9108
ERY+–LP1P2P3
321
4
LEF-10S #8
5678C109
ERY+–LP1P2P3
321
4
LEF-10S #9
+ –
5678910
ERY+–
LK2K3
K10K9K8K7K6K5K4
32
C1
4
LEF-10S
5678910
ERY+–
LK2K3
K10K9K8K7K6K5K4
32
1C
4
LEF-10S
Yellow (2)
Black (2)
RY-PA
–
Yellow (2)
Black (2)
RY-PA
–
Yellow (2)
Black (2)
RY-PA
–
Yellow (2)
Black (2)
RY-PA
–
Yellow (2)
Black (2)
RY-PA
–
Yellow (2)
Black (2)
RY-PA
–
Yellow (2)
Black (2)
RY-PA
–
Yellow (2)
Black (2)
RY-PA
–
Yellow (2)
To Strike
&            #10 To Strike
&            #9 To Strike
&            #8 To Strike
&            #7 To Strike
&            #6 To Strike
&            #5 To Strike
&            #4 To Strike
&            #3 To Strike
&            #2
Black (2)
RY-PA
+–
PS12
PS12
Note: In this 
system, masters
communicate on
channel 1. Door
stations are on 
channels 2 ~ 10.
LE-D or
LE-DA
LE-D or
LE-DALE-D or
LE-DALE-D or
LE-DALE-D or
LE-DALE-D or
LE-DALE-D or
LE-DALE-D or
LE-DALE-D or
LE-DA
LE-D or LE-DA
Connect 12V DC power supply only. Do not connect AC.
Connect 12V DC power supply 
only. Do not connect AC.
Remove the shorting link between  E  and  -  terminals at 
all the LEF masters and door/sub stations.
Remove the shorting link between E  and  -  terminals at all the LEF 
masters and door/sub stations. 
						

							– 12 –
 2 LEF-10S, 6 Indoor Subs, 2 Door Stations with BG-10C for Chime & All Call
: PS-1225UL, PS-1225S, PS-1225,
  PS-1215DINPS12
PS12Capacitors shown are 15-33  μfd, 
25V Non-Polarized (NP-25V)
Connect 12V DC power supply only. 
Do not connect AC.
5678DBDA11
ERY+–
1
E
–
P1P2P3
DC IN
+–
321
4
56789101
ERY+–LP1P2P3
32C 4
BG-10C LEF-10S #1
1
E
–
LE-A or
LE-AN LE-A or
LE-AN LE-A or
LE-AN LE-A or
LE-AN LE-A or
LE-AN
1
E
–
56789102
ERY+–LP1P2P3
3
1
4
LEF-10S #2
+
–
1
E
–
LE-A or LE-AN
1
E
–
1
E
–
1
E
–
1
E
–
C
LE-D or
LE-DALE-D or
LE-DA
Remove the shorting link between  E  and  -  terminals at all the 
LEF masters and door/sub stations. 
						

							– 13 –
6
6 OPERATIONS on LEF
  LEF is a single talkpath system.  While the Occupied LED is lit, do not attempt to select 
a station or initiate an All Call.
   If called by a master and sub at the same time, reply to the master’s call handsfree first.  
When the Occupied LED goes off, select the sub station that called.
  Calling a master or sub:
  1.  Depress a station selector button 1 ~ 10.
  2.  Push the TALK button to speak, and release to listen to the reply.
  3.  If you wish to ring a tone as an attention-getter, press the PRIV (priv\
acy) and TALK buttons together. Release the PRIV  
    button and hold the TALK button down to speak to the called station.
  4.  To conclude, depress OFF button.
 Receiving a call from a sub station:
  1.  Sub station calls in with tone and call-in LED, which stays lit for approx. 20 seconds.
  2.  Depress the lit station selector button.
  3.  Push the TALK button to speak, and release to listen.
  4.  Depress OFF button when finished.
 Receiving a call from another master:
  1.  When a master calls to another master, no station LEDs light up, and the\
 responding master answers back handsfree.
  2.  In-use LED will be on while the initiating master has a station selected.
  3.  Do not press any buttons on the master when responding to another master’s call.  If the pri\
vacy feature is engaged,    
    push TALK button momentarily to release before responding. To set the ma\
ster in privacy mode after communication,   
    press PRIV button again.
 Door answering (from a master station only):
  1.  Audio door station calls in with an electronic call tone & LED, which stays lit for approx. 20 se\
conds.
    NOTE: A 4-stroke chime tone can be heard through the inside stations whe\
n a door station calls in if the BG-10C is    
    included in the system. (Up to 3 door stations can activate chime sound.)
  2.  Depress the lit selector button, then press TALK to speak, release to listen.
 Door release with “　　” button:
  LEF-5, LEF-10, and LEF-10S provide selective door release to multiple doors (one RY-PA for each door).  When      
  communication is established to a door station, press the  “       ” button to release the corresponding door strike.
 All Call with “ALL CALL” button:
  On LEF-10S station only, the all call feature allows an announcement to be made to all the stations in the system. 
  IMPORTANT: The BG-10C is required to make this feature operable.
  1.  Press ALL CALL button.
  2.  Press TALK to make an announcement.
  3.  Press ALL CALL button again to release.
Speaker
Call-in LED
1~10
Station-selector  button 1~10
Voice volume control
In-use LED (occupied)
All Call transmit button 
& LED (LEF-10S only)Door release button
Privacy button 
& LED 
Talk (listen)
switch 
Microphone
ON LED
OFF switch
LEF-5, 10, 10S
Speaker Microphone
In-use LED 
(occupied)
Privacy button 
&  LED 
Talk (listen) 
button
Call-in LED 1~3
Station-selector
 button 1~3
OFF button (w/ON LED)
Voice volume 
control 
LEF-3
123OFFOCCUPIED PRIV
TALK
CALL1
234 56 78 910OFF
OCUPIED
VOICE VOL
PRIV
ALL CALL TALK
CALL
– 14 –
 LEF-10S only
Operation Plate for LEF-3
Operation Plate for LEF-5, 10, 10S
7 7 LEF system Troubleshooting Guide
Single-master
system
Mulit-master
system
Problem Solution
 BG-10C All Call, Chime, and Music Adaptor:
Music is selectively distributed to all LEF station speakers, controlled by switch settings in BG-10C.
When any station initiates a call, the music mutes automatically.
When door station calls in, chime tone is transmitted to selected inside stations, controlled by switch settings.
 Privacy (PRIV) feature:
When PRIV button is depressed, the calling master can call into a station in “privacy” mode, but the “listen” mode is c\
ut off.  
To release from PRIV, press TALK momentarily.
 LE sub stations:
To call a master station:
  1.  Simply press the CALL button, which rings an electronic tone (for as long as button is held)\
.  The corresponding LED on
              the called master station(s) will be lit for approximate\
ly 20 seconds.
  2.  When master replies, speak handsfree.
  When called by a sub station while talking to another station:
The station’s call-in LED will light for approx. 20 sec., but call tone is muted.  (NOTE: If A/B switch is set to B position, the 
call tone will be heard at a muted level, even if the receiving station has another station selected.) Depress OFF button to 
disconnect from original call, the depress the selector button with lit call-in LED to answer the next call.
1.  No call tone or call-in LED when sub
  calls master  (2-wire connection).
2.  Call tone works, but no    
  communication, or communication  
  works, but no call tone.
3.  Master stations cannot call each    other.
4.  Call tone is too loud or too soft. Make sure jumper is installed between  E  &  
–
  at the subs and the master 
station.
Same as above;  E  &   –
  jumper must be in place.  If 3 wires are used,  1  &
 –  are for call-in, and  1  &  E  are for communication.  Check cont\
inuity and 
connection of wires.
The  C  terminal of the master means “CALL”, and allows master-to-\
master 
communication.   Make sure the  C  terminal of each master is connected \
to 
a designated # terminal on all other masters.  (example:  C  at master \
1 
connects to the 
 1  terminal of all other masters.)
Adjust call tone volume with slide switch located under operation plate.\
  
(Remove plate and use small screwdriver to adjust.)
OFF
OCCUPIED PRIV.
VOICE VOL.
TALK
CALL
AIPHONE
LEF-10SALL CALL
10
9
8
7
6
5
4
3
2
1Fill in
directory
Station-
selector 
(5 or 10) Sub/door call-in
ON LED
Privacy
Door release
Voice vol.
All call 
In-use OFF 
(standby)
OFF
OCCUPIEDPRIV.
VOL.
VOICE TALK
CALL
AIPHONE
LEF-3
1 23Fill in
directory
Station-
selector (3) Sub/door call-in
ON LED
Privacy
OFF (standby)
Voice vol. In-use 
						

							– 13 –
6
6 OPERATIONS on LEF
  LEF is a single talkpath system.  While the Occupied LED is lit, do not attempt to select 
a station or initiate an All Call.
   If called by a master and sub at the same time, reply to the master’s call handsfree first.  
When the Occupied LED goes off, select the sub station that called.
  Calling a master or sub:
  1.  Depress a station selector button 1 ~ 10.
  2.  Push the TALK button to speak, and release to listen to the reply.
  3.  If you wish to ring a tone as an attention-getter, press the PRIV (priv\
acy) and TALK buttons together. Release the PRIV  
    button and hold the TALK button down to speak to the called station.
  4.  To conclude, depress OFF button.
 Receiving a call from a sub station:
  1.  Sub station calls in with tone and call-in LED, which stays lit for approx. 20 seconds.
  2.  Depress the lit station selector button.
  3.  Push the TALK button to speak, and release to listen.
  4.  Depress OFF button when finished.
 Receiving a call from another master:
  1.  When a master calls to another master, no station LEDs light up, and the\
 responding master answers back handsfree.
  2.  In-use LED will be on while the initiating master has a station selected.
  3.  Do not press any buttons on the master when responding to another master’s call.  If the pri\
vacy feature is engaged,    
    push TALK button momentarily to release before responding. To set the ma\
ster in privacy mode after communication,   
    press PRIV button again.
 Door answering (from a master station only):
  1.  Audio door station calls in with an electronic call tone & LED, which stays lit for approx. 20 se\
conds.
    NOTE: A 4-stroke chime tone can be heard through the inside stations whe\
n a door station calls in if the BG-10C is    
    included in the system. (Up to 3 door stations can activate chime sound.)
  2.  Depress the lit selector button, then press TALK to speak, release to listen.
 Door release with “　　” button:
  LEF-5, LEF-10, and LEF-10S provide selective door release to multiple doors (one RY-PA for each door).  When      
  communication is established to a door station, press the  “       ” button to release the corresponding door strike.
 All Call with “ALL CALL” button:
  On LEF-10S station only, the all call feature allows an announcement to be made to all the stations in the system. 
  IMPORTANT: The BG-10C is required to make this feature operable.
  1.  Press ALL CALL button.
  2.  Press TALK to make an announcement.
  3.  Press ALL CALL button again to release.
Speaker
Call-in LED 1~10
Station-selector  button 1~10
Voice volume control
In-use LED (occupied)
All Call transmit button 
& LED (LEF-10S only) Door release button
Privacy button 
& LED 
Talk (listen)
switch 
Microphone
ON LED
OFF switch
LEF-5, 10, 10S
Speaker Microphone
In-use LED 
(occupied)
Privacy button 
&  LED 
Talk (listen) 
button
Call-in LED 1~3
Station-selector
 button 1~3
OFF button (w/ON LED)
Voice volume 
control 
LEF-3
123OFFOCCUPIED PRIV
TALK
CALL1
234 56 78 910OFF
OCUPIED
VOICE VOL
PRIV
ALL CALL TALK
CALL
– 14 –
 LEF-10S only
Operation Plate for LEF-3
Operation Plate for LEF-5, 10, 10S
7
7 LEF system Troubleshooting Guide
Single-master
system
Mulit-master
system
Problem Solution
 BG-10C All Call, Chime, and Music Adaptor:
Music is selectively distributed to all LEF station speakers, controlled by switch settings in BG-10C.
When any station initiates a call, the music mutes automatically.
When door station calls in, chime tone is transmitted to selected inside stations, controlled by switch settings.
 Privacy (PRIV) feature:
When PRIV button is depressed, the calling master can call into a station in “privacy” mode, but the “listen” mode is c\
ut off.  
To release from PRIV, press TALK momentarily.
 LE sub stations:
To call a master station:
  1.  Simply press the CALL button, which rings an electronic tone (for as long as button is held)\
.  The corresponding LED on
              the called master station(s) will be lit for approximate\
ly 20 seconds.
  2.  When master replies, speak handsfree.
  When called by a sub station while talking to another station:
The station’s call-in LED will light for approx. 20 sec., but call tone is muted.  (NOTE: If A/B switch is set to B position, the 
call tone will be heard at a muted level, even if the receiving station has another station selected.) Depress OFF button to 
disconnect from original call, the depress the selector button with lit call-in LED to answer the next call.
1.  No call tone or call-in LED when sub
  calls master  (2-wire connection).
2.  Call tone works, but no    
  communication, or communication  
  works, but no call tone.
3.  Master stations cannot call each    other.
4.  Call tone is too loud or too soft. Make sure jumper is installed between  E  &  
–
  at the subs and the master 
station.
Same as above;  E  &   –
  jumper must be in place.  If 3 wires are used,  1  &
 –  are for call-in, and  1  &  E  are for communication.  Check cont\
inuity and 
connection of wires.
The  C  terminal of the master means “CALL”, and allows master-to-\
master 
communication.   Make sure the  C  terminal of each master is connected \
to 
a designated # terminal on all other masters.  (example:  C  at master \
1 
connects to the 
 1  terminal of all other masters.)
Adjust call tone volume with slide switch located under operation plate.\
  
(Remove plate and use small screwdriver to adjust.)
OFF
OCCUPIED PRIV.
VOICE VOL.
TALK
CALLAIPHONE
LEF-10SALL CALL
10
9
8
7
6
5
4
3
2
1Fill in
directory
Station-
selector 
(5 or 10) Sub/door call-in
ON LED
Privacy
Door release
Voice vol.
All call In-use
OFF 
(standby)OFF OCCUPIEDPRIV.
VOL.
VOICE TALKCALL
AIPHONE
LEF-3
1 23Fill in
directory
Station-
selector (3) Sub/door call-in
ON LED
Privacy
OFF (standby)
Voice vol.In-use 
						

							– 15 –
Mulit-master system
ProblemSolution
Call-in LEDs only light when a sub station calls.  A responding master 
answers handsfree, and therefore does not have to select a station numbe\
r.
Make sure all masters are in the OFF (standby) position. The station w\
hose 
LED above the OFF button is lit is the one that’s on.  Check 
 R  wire for a 
short to ground.  Take  R  wire off of terminal. If Occupied light remai\
ns lit, the 
unit is damaged and needs repair.
Check  E  &   –
  wires from sub for proper connection to master.  See #2 
solution above.
Make sure station number wires are not shorted together.  Remove all 
jumpers between  E  &   –
  (in multi-master system).  Test master station by 
taking wires off of affected station  #
 ’s, then touch a jumper wire between a 
station  #  and   –
  .  If multiple call-in LEDs light up, the unit has sustained 
power surge damage and must be sent in for repair.
RY-PA relay is required for each door to be released.  Connect black wir\
es to  
 L  &  – . For selective door release, connect RY-PA between   K#  
(matching station # that door is on) and  L  , which provides 12V DC when
 “     ” button is pressed.
All Call requires the BG-10C Adaptor with power supply.
BG-10C must be installed.  Wire from door station must connect to BG-10C\
, 1  of door to  DA / DB / DC  of BG-10C.   –  must be connected from LEF 
master to BG-10C.
Door station should be wired directly to BG-10C or first master.  Make s\
ure 
the A/B switch on the back of the LEF master is in the “A” positio\
n.  Make 
sure
  R  line is connected between LEF master and BG-10C.
Check connection from  P1 ,  P2 ,  P3  terminals from LEF-10S to BG-10C.\
 
 P1  should be 10V DC or higher when All Call button is engaged.  P2  an\
d
 P3  carry the voice signal from the initiating master to the BG-10C.  B\
e sure 
to press TALK while making an All Call announcement, and press All Call \
button when finished.
Adjust volume levels on front of BG-10C (located behind metal cover pla\
te).
Make sure jumpers between  E  &   –
  are removed.  When using the BG-10C 
for All Call in a system with sub stations, a non-polarized capacitor (\
NP-25V) 
must be installed in series on each station # line that a sub station is\
 on 
between the BG-10C and LEF-10S. (See diagram on pg. 12)
Intercom stations should not be mounted back-to-back on the same wall.  \
If 
they are, they must be installed at least 60cm (2’) apart with insu\
lation 
isolating them.  Adjust voice volume control downward to eliminate feedb\
ack.
Adjust “Voice Vol.” upward.  Make sure the 
 1  and   –  terminals from sub to 
master are not reversed.
System wiring must be run at least 50cm (20”) away from AC wiring, \
fluorescent lights, or dimmer switches.  Wires can cross AC at 90 degree\
s.  If 
shielded wire was used, tie all of the shields together and ground one e\
nd to 
an earth ground.  If noise persists, isolate source of the noise and sep\
arate 
the intercom from the source.
5.  Call-in LED lights don’t light up 
when calling master-to-master.
6.  In-use LED is always on.
7.  Call tone and call-in LED from subs  work fine, but no communication, or 
vice versa.
8.  When sub calls in, multiple call-in  LED lights come on.
9.  Door release doesn’t work.
10. All Call from LEF-10S doesn’t work.
11. Chime from door station doesn’t  work.
12. Chime from door works, but  electronic call tone in LEF masters 
also is heard.
13. All Call doesn’t work, but BG-10C is  included in system.
14. All Call pretone and voice volume  are too loud or too soft. 
15. When an All Call is initiated, all of  the LEDs corresponding to sub 
station channels light up.
16. Feedback is heard between  intercom stations in adjacent rooms.
17. Communication to another station is  very weak.
18. LEF system has AC hum when  listening to another station from a 
master station.
– 16 –
9 9 SPECIFICATIONS (LEF) 
8
8 
TECHNICAL PRECAUTIONS
IMPORTANT:
•  Aiphone is not responsible for improper installations of its product which result in interference generated by dimmer switches, 
fluorescent lighting fixtures or other similar electrical devices.  Any such installation must be corrected at the source by the 
installing party.  Aiphone also recommends that when installing any of its communication products that the intercom wiring be 
run at least 50cm (20”) away from any AC wiring.
•  Cleaning: Clean the units with a soft cloth and gentle cleaner. Do not spray cleaner directly on unit.  Do not use an abrasive  cleaner or cloth.
Power source:  12V DC, 300mA per station.
  Use one PS-1225UL, PS-1225S, PS-1225, or PS-1215DIN power supply per system.
Communication:  Push-to-talk, release-to-listen at master station.
   Master-to-master calling does not turn on station LED at receiving master.
Talk channel:  1 channel (talkpath).  Occupied LED is lit when the system is in use.
Output:   800mW at 20Ω  (reception).  500mW at 20Ω  (transmission).
Wiring:  • Single-master system:  2 wires homerun.
   • Between LEF masters: Min. 4 common
(*) + 1 wire per number of stations in the system, looped 
    (See pg. 3)
  
(*)9 common wires are required if All Call and Door Release are included, plus total number   
     of stations in the system (plus add'l wire per door if selective door release is included).
   • Intermixed system:  3 wires per sub, homerun to the nearest master, or 2 common + 1    
    individual wire per sub, looped.
Door release button contact:  30V DC, 0.1A (resistance load).
("　　")
Select switch contact:  12V DC, 30mA (for external device control).
Wiring distance:   0.65mm  0.8mm  1.0mm  22AWG  20AWG  18AWG
    200m  300m  480m  650'  1,000’  1,600'
Dimensions & weight:
   LEF-3:  180 H x 143 W x 55 D (mm).  7-1/16" H x 5-5/8" W x 2-3/16" D.
    420g, 0.93 lbs. approx.
  LEF-5, 10, 10S:  206 H x 190 W x 55 D (mm).  8-1/8" H x 7-1/2" W x 2-3/16" D.
    550g, 1.21 lbs. (LEF-5).  650g, 1.43 lbs. (LEF-10, 10S).
http://www.aiphone.net/
WARRANTY
Aiphone  warrants  its  products  to  be  free  from  defects  of  material  and  workmanship  under  normal  use  and  service  for  a 
period  of  one  year  after  delivery  to  the  ultimate  user  and  will  repair  free  of  charge  or  replace  at  no  charge,  should  it 
become  defective  upon  which  examination  shall  disclose  to  be  defective  and  under  warranty.  Aiphone  reserves  unto 
itself  the  sole  right  to  make  the  final  decision  whether  there  is  a  defect  in  materials  and/or  workmanship;  and  whether 
or  not  the  product  is  within  the  warranty.  This  warranty  shall  not  apply  to  any  Aiphone  product  which  has  been  subject 
to  misuse,  neglect,  accident,  power  surge,  or  to  use  in  violation  of  instructions  furnished,  nor  extended  to  units  which 
have  been  repaired  or  altered  outside  of  the  factory.  This  warranty  does  not  cover  batteries  or  damage  caused  by 
batteries  used  in  connection  with  the  unit.  This  warranty  covers  bench  repairs  only,  and  any  repairs  must  be  made  at 
the  shop  or  place  designated  in  writing  by  Aiphone.  This  warranty  is  limited  to  the  standard  specifications  listed  in  the 
operation  manual.  This  warranty  does  not  cover  any  supplementary  function  of  a  third  party  product  that  is  added  by 
users  or  suppliers.  Please  note  that  any  damage  or  other  issues  caused  by  failure  of  function  or  interconnection  with 
Aiphone  products  is  also  not  covered  by  this  warranty.  Aiphone  will  not  be  responsible  for  any  costs  incurred  involving 
on  site  service  calls.  Aiphone  will  not  provide  compensation  for  any  loss  or  damage  incurred  by  the  breakdown  or 
malfunction  of  its  products  during  use,  or  for  any  consequent  inconvenience  or  losses  that  may  result.
AIPHONE CO., LTD., NAGOYA, JAPAN
Issue Date: Nov. 2015
83492 N  P1115 AZ 58293
The  object  area  of              is  the  EU. 
						

							– 15 –
Mulit-master system
ProblemSolution
Call-in LEDs only light when a sub station calls.  A responding master 
answers handsfree, and therefore does not have to select a station numbe\
r.
Make sure all masters are in the OFF (standby) position. The station w\
hose 
LED above the OFF button is lit is the one that’s on.  Check 
 R  wire for a 
short to ground.  Take  R  wire off of terminal. If Occupied light remai\
ns lit, the 
unit is damaged and needs repair.
Check  E  &   –
  wires from sub for proper connection to master.  See #2 
solution above.
Make sure station number wires are not shorted together.  Remove all 
jumpers between  E  &   –
  (in multi-master system).  Test master station by 
taking wires off of affected station  #
 ’s, then touch a jumper wire between a 
station  #  and   –
  .  If multiple call-in LEDs light up, the unit has sustained 
power surge damage and must be sent in for repair.
RY-PA relay is required for each door to be released.  Connect black wir\
es to  
 L  &  – . For selective door release, connect RY-PA between   K#  
(matching station # that door is on) and  L  , which provides 12V DC when
 “     ” button is pressed.
All Call requires the BG-10C Adaptor with power supply.
BG-10C must be installed.  Wire from door station must connect to BG-10C\
, 1  of door to  DA / DB / DC  of BG-10C.   –  must be connected from LEF 
master to BG-10C.
Door station should be wired directly to BG-10C or first master.  Make s\
ure 
the A/B switch on the back of the LEF master is in the “A” positio\
n.  Make 
sure
  R  line is connected between LEF master and BG-10C.
Check connection from  P1 ,  P2 ,  P3  terminals from LEF-10S to BG-10C.\
 
 P1  should be 10V DC or higher when All Call button is engaged.  P2  an\
d
 P3  carry the voice signal from the initiating master to the BG-10C.  B\
e sure 
to press TALK while making an All Call announcement, and press All Call \
button when finished.
Adjust volume levels on front of BG-10C (located behind metal cover pla\
te).
Make sure jumpers between  E  &   –
  are removed.  When using the BG-10C 
for All Call in a system with sub stations, a non-polarized capacitor (\
NP-25V) 
must be installed in series on each station # line that a sub station is\
 on 
between the BG-10C and LEF-10S. (See diagram on pg. 12)
Intercom stations should not be mounted back-to-back on the same wall.  \
If 
they are, they must be installed at least 60cm (2’) apart with insu\
lation 
isolating them.  Adjust voice volume control downward to eliminate feedb\
ack.
Adjust “Voice Vol.” upward.  Make sure the 
 1  and   –  terminals from sub to 
master are not reversed.
System wiring must be run at least 50cm (20”) away from AC wiring, \
fluorescent lights, or dimmer switches.  Wires can cross AC at 90 degree\
s.  If 
shielded wire was used, tie all of the shields together and ground one e\
nd to 
an earth ground.  If noise persists, isolate source of the noise and sep\
arate 
the intercom from the source.
5.  Call-in LED lights don’t light up 
when calling master-to-master.
6.  In-use LED is always on.
7.  Call tone and call-in LED from subs  work fine, but no communication, or 
vice versa.
8.  When sub calls in, multiple call-in  LED lights come on.
9.  Door release doesn’t work.
10. All Call from LEF-10S doesn’t work.
11. Chime from door station doesn’t  work.
12. Chime from door works, but  electronic call tone in LEF masters 
also is heard.
13. All Call doesn’t work, but BG-10C is  included in system.
14. All Call pretone and voice volume  are too loud or too soft. 
15. When an All Call is initiated, all of  the LEDs corresponding to sub 
station channels light up.
16. Feedback is heard between  intercom stations in adjacent rooms.
17. Communication to another station is  very weak.
18. LEF system has AC hum when  listening to another station from a 
master station.
– 16 –
9
9 SPECIFICATIONS (LEF) 
8
8 TECHNICAL PRECAUTIONS
IMPORTANT:
•  Aiphone is not responsible for improper installations of its product which result in interference generated by dimmer switches, fluorescent lighting fixtures or other similar electrical devices.  Any such installation must be corrected at the source by the 
installing party.  Aiphone also recommends that when installing any of its communication products that the intercom wiring be 
run at least 50cm (20”) away from any AC wiring.
•  Cleaning: Clean the units with a soft cloth and gentle cleaner. Do not spray cleaner directly on unit.  Do not use an abrasive  cleaner or cloth.
Power source:  12V DC, 300mA per station.
  Use one PS-1225UL, PS-1225S, PS-1225, or PS-1215DIN power supply per system.
Communication:  Push-to-talk, release-to-listen at master station.
   Master-to-master calling does not turn on station LED at receiving master.
Talk channel:  1 channel (talkpath).  Occupied LED is lit when the system is in use.
Output:   800mW at 20Ω  (reception).  500mW at 20Ω  (transmission).
Wiring:  • Single-master system:  2 wires homerun.
   • Between LEF masters: Min. 4 common
(*) + 1 wire per number of stations in the system, looped 
    (See pg. 3)
  
(*)9 common wires are required if All Call and Door Release are included, plus total number   
     of stations in the system (plus add'l wire per door if selective door release is included).
   • Intermixed system:  3 wires per sub, homerun to the nearest master, or 2 common + 1    
    individual wire per sub, looped.
Door release button contact:  30V DC, 0.1A (resistance load).
("　　")
Select switch contact:  12V DC, 30mA (for external device control).
Wiring distance:   0.65mm  0.8mm  1.0mm  22AWG  20AWG  18AWG
    200m  300m  480m  650'  1,000’  1,600'
Dimensions & weight:
   LEF-3:  180 H x 143 W x 55 D (mm).  7-1/16" H x 5-5/8" W x 2-3/16" D.
    420g, 0.93 lbs. approx.
  LEF-5, 10, 10S:  206 H x 190 W x 55 D (mm).  8-1/8" H x 7-1/2" W x 2-3/16" D.
    550g, 1.21 lbs. (LEF-5).  650g, 1.43 lbs. (LEF-10, 10S).
http://www.aiphone.net/
WARRANTY
Aiphone  warrants  its  products  to  be  free  from  defects  of  material  and  workmanship  under  normal  use  and  service  for  a 
period  of  one  year  after  delivery  to  the  ultimate  user  and  will  repair  free  of  charge  or  replace  at  no  charge,  should  it 
become  defective  upon  which  examination  shall  disclose  to  be  defective  and  under  warranty.  Aiphone  reserves  unto 
itself  the  sole  right  to  make  the  final  decision  whether  there  is  a  defect  in  materials  and/or  workmanship;  and  whether 
or  not  the  product  is  within  the  warranty.  This  warranty  shall  not  apply  to  any  Aiphone  product  which  has  been  subject 
to  misuse,  neglect,  accident,  power  surge,  or  to  use  in  violation  of  instructions  furnished,  nor  extended  to  units  which 
have  been  repaired  or  altered  outside  of  the  factory.  This  warranty  does  not  cover  batteries  or  damage  caused  by 
batteries  used  in  connection  with  the  unit.  This  warranty  covers  bench  repairs  only,  and  any  repairs  must  be  made  at 
the  shop  or  place  designated  in  writing  by  Aiphone.  This  warranty  is  limited  to  the  standard  specifications  listed  in  the 
operation  manual.  This  warranty  does  not  cover  any  supplementary  function  of  a  third  party  product  that  is  added  by 
users  or  suppliers.  Please  note  that  any  damage  or  other  issues  caused  by  failure  of  function  or  interconnection  with 
Aiphone  products  is  also  not  covered  by  this  warranty.  Aiphone  will  not  be  responsible  for  any  costs  incurred  involving 
on  site  service  calls.  Aiphone  will  not  provide  compensation  for  any  loss  or  damage  incurred  by  the  breakdown  or 
malfunction  of  its  products  during  use,  or  for  any  consequent  inconvenience  or  losses  that  may  result.
AIPHONE CO., LTD., NAGOYA, JAPAN
Issue Date: Nov. 2015
83492 N  P1115 AZ 58293
The  object  area  of              is  the  EU.