1
A
B
C
C
D
F
E
G
Logic Board
Model 050DCRJWFMC
WARNING: This product can expose you to chemicals
including lead, which are known to the State of California to
cause cancer or birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.
To prevent possible SERIOUS INJURY or DEATH:
• Disconnect ALL electric and battery power BEFORE performing ANY
service or maintenance.
To prevent damage to the receiver/logic board, DO NOT touch printed
circuit board of replacement receiver/logic board during installation.
ALWAYS wear protective gloves and eye protection when changing the
battery or working around the battery compartment.
NOTICE: This device complies with Part 15 of the FCC rules and Industry Canada’s license-
exempt RSSs. 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.
Any changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
This device must be installed to ensure a minimum 20 cm (8 in.) distance is maintained between
users/bystanders and device.
This device has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC rules and Industry Canada ICES standard. These limits are
designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Before you begin. Your new MyQ
®
serial number is located on the
replacement label with your replacement logic board. You will need this new MyQ
serial number to connect your opener to the network.
1. Disconnect power.
2. Open the front panel (A).
3. Remove the battery cover.
Disconnect the battery. Remove
the battery and set aside (B).
4. Add the Step Saver sticker under
the yellow program button.
5. Add the Step Saver sticker under
the yellow program button.
Disconnect the wires coming from
the safety reversing sensors,door
control, door lock and cable
tension monitor from the logic
board (C).
6. Remove the receiver logic board
cover (D).
7. Disconnect all the wiring harnesses
from the logic board (E).
8. Remove the four screws securing
the logic board. Rmove the logic
board (F), and discard.
9. Install the new logic board and
connect the wiring harnesses.
Route the antenna through the
channel in the cover.
10. Adhere the new MyQ serial
number label over the original
label on the logic board cover.
11. Reprogram the travel and test the
safety reversal system (see pages
and 3).
12. Program all remote controls and
keyless entries (see page 4)..
13. Use the MyQ app to add the
new MyQ serial number to your
account.
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