CAUTION
To reduce the risk of FIRE or INJURY to persons use ONLY
Chamberlain part 922GA for replacement batteries.
2 Connect BatteriesThe batteries are charged in circuit by using the transformer (provided).
Locate the two white battery plugs on the
NOTES: Batteries will degrade over time depending on temperature and usage. For best performance, the batteries should be changed every 3 years.
Batteries do not perform well in extremely cold temperatures. For locations where the temperatures are below
Battery Connectors
Board Connectors
Battery Connection (GA400D Only)
| C1Ø1 |
| R182 |
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| P1 |
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| J19 |
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| D36 |
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| J18 |
| SOL |
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| GND |
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| L1 |
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| MAGR |
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| K5 |
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| U4 |
LOCK |
| D42 |
| F12 |
| ON | OFF | C75 | ||
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| Z1 | R2 |
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| LEARN | LOCK / |
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| XMITTER | BIPART DELAY |
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GATE 1 | R1 |
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| D1Ø |
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| C7Ø |
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| BR |
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| C71 |
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| K2 |
| C72 |
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| GR |
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| C73 |
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| WH |
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| 18 |
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| YL |
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| BL |
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| GATE 1 |
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| RD |
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| SET |
| SET | LEARN |
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Battery Connectors |
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| K1 | OPEN |
| CLOSE |
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| LIMIT |
| LIMIT | LIMITS |
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| Q9 |
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| TIMER | |
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| GATE 2 | ||
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| RUNNING | |
Control Board
C66 C65
| C68 |
| Z22 |
| Q6 |
| C33 |
| Q12 |
F11 | R93 |
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| Q1 |
CTRL PWR |
OVLD |
OR
GATE 2
F9
24V | R9Ø |
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BR R1ØØ | R1Ø1 |
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GR |
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WH |
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YL |
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BL |
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| D44 |
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RD |
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| K3 |
| D8 |
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| D4 |
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D16 |
| Q22 |
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| R196 |
| R9 |
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J21 |
| J23J24 |
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| D1 | R329 |
| F3 |
| R27 | |||
F1 |
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30 | AØ3 | AØ3 | 30 | C64 | R22 |
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| 32V | 32V |
| U2 | DB1 | |
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ØJ2
MAX |
| R186 | OFF | MAX |
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| C12 |
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| Z4 | F7 |
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| D2 | C13 |
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| D129 |
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| C69 | F2 |
C11 | JU1 | R42Ø | MOV1 | |
R423 | ||||
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| K6 |
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| JU2 |
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| JU1 |
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SINGLE BUTTON |
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| RESET |
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| STOP |
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| COM |
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| COM |
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| R184 |
CHGR |
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OVLD |
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AC PWR |
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/SOLAR | C2 |
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| R4 | MOV2 |
Board Connectors
Battery Connection (GA420D Only)
31 | Wiring |