Install The Receiver; Wiring The Receiver; Set Security Mode; Programming The Remote To The Receiver - Chamberlain MEGA ARM / MEGA ARM TOWER Installation And Service Manual

WARNING
WARNING WARNING
To prevent possible SERIOUS INJURY or DEATH from a moving
gate or garage door:
• ALWAYS keep remote controls out of reach of children.
NEVER permit children to operate, or play with remote control
transmitters.
• Activate gate or door ONLY when it can be seen clearly, is
properly adjusted, and there are no obstructions to door travel.
• ALWAYS keep gate or garage door in sight until completely closed
NEVER permit anyone to cross path of moving gate or door.

WIRING THE RECEIVER

AVERTISSEMENT
Contacts 1 and 2 on the receiver terminal strip are for power. The
power terminals are unpolarized. Connect terminals 1 and 2 to
the accessory power terminals on the J4 terminal strip at the
bottom of the logic board (Figure 1).
AVERTISSEMENT
Contacts 3 and 4 on the receiver terminal strip are for a common
and a relay. Connect terminals 3 and 4 to terminals 1 and 10 on
the J5 terminal strip at the top of the logic board.
NOTE: Auxiliary Pin 4 can be used for push to open/push to close
functionality.

SET SECURITY MODE

The Universal Receiver can be used with up to 15 rolling code
remotes or passwords in HIGH security mode. Alternately, it can
be used with up to 31 of any type remote in NORMAL security
mode, including any combination of rolling code, billion code
(390Mhz only), or dip switch remotes.
The jumper must be set at the HIGH position for the receiver to
operate in HIGH security mode. It must be set at NORMAL
position to operate at the NORMAL mode (Figure 2).
When changing from NORMAL to HIGH security mode, any
previous remote codes must be erased. Repeat Steps 2 and 3 in
the Programming Section below to reprogram the receiver for
ADVERTENCIA
each remote control in use.
The receiver is factory set at HIGH.

PROGRAMMING THE REMOTE TO THE RECEIVER

ADVERTENCIA
STEP 1: Pry open the front panel of receiver case with a coin or
a screwdriver. Re-connect power to opener (Figure 3).
STEP 2: Press and release the "learn" button on the receiver.
The learn indicator light will glow steadily for 30 seconds.
STEP 3: Within 30 seconds, press and hold the button on the
hand-held remote that you wish to operate your gate.
The opener will now operate when the push button on either the
receiver or the remote control is pressed.
Repeat Steps 2 and 3 for each remote control that will be used to
operate the gate.

TO ERASE ALL REMOTE CONTROL CODES

Press and hold the "learn" button on the receiver panel until the
indicator light turns off (about 6 seconds). All remote codes are
now erased. Then follow the steps above to reprogram each
remote control.
I N S T A L L T H E R E C E I V E R
TS
DC
OPENING RECEIVER
FIGURE 3
11
NOTICE: To comply with FCC and or Industry Canada (IC) rules, adjustment or modifications of
this receiver and/or transmitter are prohibited, except for changing the code setting or replacing
the battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.
MANUAL
1
J5
OPEN
Q2
M/S J3
R14
S3 T2
D1Ø
1 2 3 4 5 6 7 8 9 1Ø 11 12
1 1 MANUAL R18
J2
J5
Q2 OPEN T1
AUX LIMITS M/S J3
R14
S3 T2 T4 T6 T8
D8 D1Ø R18
T1 T3 T5 T7
S2 R17
S1 S2 R17 OPEN 1 OPEN 2 OPEN 3
OPEN 1 OPEN 2 OPEN 3 AUX 4 SAFETY 5CLOSE 6 BACK 7SHADOW 8
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 CLOSE
8 R1 1 2 R12 3 4 5 6 R16 7 8 R21 C16
CLOSE
R24 R35 R41 R46 R5Ø R61
C3
R16
R12 U4 U8 U9 U11 U13 U14 U15 R21
C2
U1
R23 R34 R4Ø R45 R49 R6Ø
OLS
R24
D7
R22 R33 R39 R44 R48 C3 R59
OPEN R43
X1 R26 R43
R1Ø U6
D6
R63
D21
R9 U16
IRD1 R25 U8
BRAKE U4 R58
C12
R8
D5
U5 U12
U7 DX3
CLOSE
U1Ø
DX4
D4
C2
R7
CLS R57
D3
C13
R6 R56
IRD C4 DX2
U3 R38
D2 CPU R23
JP2
R5 U2
R37
R51
F2 R55
R4 R19
D2Ø
1A DC
R3 R2Ø C8 WARNING FOR
R62
+
Q1 C2Ø CONTINUOUS
F1
D9 C5 + PROTECTION
AGAINST FIRE
DX1
D1 REPLACE ONLY R22
+ F4
WITH THE SAME
B1
R2 R11 TYPE AND RATING
HBEAT BAT LO AC POWER OF FUSE
F3
K1 D11 D12 D14
X1
R26
R13
J4 MOTOR
U19 BAT– MOV U6
Aux Relay
TR
J1 C NC NO DC
1
1
PWR ACC+ ACC– BAT– BAT+ 24VAC XFMR MOTOR
IRD1
U5
U7
HBEAT BAT LO AC POWER
D11 D12 D14
R13
J4
U19
BAT–
C4
U3
CPU
1
JP2
U2
F2
R19
ACC+ ACC– BAT–
1A DC
R2Ø
+
F1
C5 J4
+ F4
B1
R11
HBEAT BAT LO AC POWER
F3
K1
D11 D12 D14
–
+
FIGURE 1
R13
J4
U19
BAT– MOV
1
Security Mode
Jumper
Terminals
HIGH
SECURITY MODE
FIGURE 2
OPEN RECEIVER
Connect
Antenna
24V
J5
1 2 3 4 5 6 7 8 9 1Ø 11 12
T4 T6 T8
T3 T5 T7
AUX 4 SAFETY 5CLOSE 6 BACK 7SHADOW 8
C16
R35 R41 R46 R5Ø R61
U9 U11 U13 U14 U15
R34 R4Ø R45 R49 R6Ø
R33 R39 R44 R48 R59
R43
R43
R63
D21
R25
R58
C12
U12
DX3
P1 to J4 Accessory Power
U1Ø
DX4
P2 to J4 Accessory Power
P3 to J5 Terminal 1
R57
C13
MOV
P4 to J5 Terminal 10
R56
DX2
R38
R37
R51
R55
D2Ø
BAT+
C8 WARNING FOR
R62
C2Ø CONTINUOUS
+
PROTECTION
AGAINST FIRE
DX1
REPLACE ONLY
WITH THE SAME
10
TYPE AND RATING
1
OF FUSE
1
2
3
4
MOTOR
P1 - P4 TR
Security Mode Jumper
Terminals
NORMAL
SECURITY MODE
Indicator Light
Learn Button
Output Duration
C
P2
Terminals
M
Security Mode
Power Supply
12V
Jumper
(Not Provided)
U16