Genuine LiftMaster K1D6761-1CC AC logic board — the UL325 main control board for LiftMaster’s commercial AC slide and swing gate operators built after 2016: the SL3000U, CSW200U, SL585U and SL595U families, including every UL, 101, 501 and other voltage and phase version listed below. LiftMaster now supplies it as kit K1D6761-1CCMC, with a mounting base plate and hardware.
How to identify it. The label reads K1D6761-1CC or K1D6761-1CCMC. Some boards carry a sticker reading 001D9038-1CC. If the label is gone, the bare green circuit board is printed 014D1412B — the circuit-board fabrication number. Any of these means this is the right board.
Order by the number on the board, not the model on the operator. Read the board itself before ordering.
Specifications
| Part number | K1D6761-1CC |
|---|---|
| Current kit number | K1D6761-1CCMC |
| Also seen on the board | 001D9038-1CC (sticker), 014D1412B (printed on the circuit board) |
| LiftMaster description | Logic Board, AC |
| Standard | UL325 (2016) |
| Supplied with | Mounting base plate and installation hardware |
| Condition | Genuine LiftMaster OEM, new |
Fits these operators
| Operator family | Model numbers |
|---|---|
| SL3000 slide | SL3000U, SL3000UL, SL3000101U, SL3000501U, SL3000101UL, SL3000501UL |
| CSW200 swing | CSW200U, CSW200UL, CSW200501U, CSW200101UL, CSW200501UL |
| SL585 slide | SL585U, SL585UL, SL585101U, SL585103U, SL585105U, SL585151U, SL585501U, SL585503U, SL585505U |
| SL595 slide | SL595U, SL595UL, SL595101U, SL595103U, SL595105U, SL595151U, SL595203U, SL595205U |
Older (pre-2016, non-UL) operators. The earlier GL board, K001A5566, is no longer available. This board is backward compatible with those second-generation units, but it enforces the 2016 UL325 rules: monitored entrapment protection is mandatory, including in the OPEN direction.
If the site has no monitored photo eyes or edges on the open side, the gate will not run after the swap. Budget for monitored devices such as the LMRRUL photo eye before ordering.
The other boards in your operator
This logic board works with a motor drive (power) board and the K1D8387-1CC UL325 expansion board. The power board and transformer depend on the operator:
| Operator | Motor drive / power board | Transformer |
|---|---|---|
| SL3000U / CSW200U | K1D8402-1CC (1PH) | K21-14182 |
| SL585U / SL595U | K1D8284-1CC (1PH) or K1D8424-1CC (3PH) | K21-3260-1, or K204A0276 on 575V |
New board showing the wrong operator type? One logic board serves four operators, so it identifies the operator from an ID resistor — on the reset switch harness, and on the SL585U/SL595U also on the power board. If the display reports the wrong operator after fitting, the fault is the ID harness or resistor, not the new board: K94-37468 (SL3000U), K94-37753 (SL585U), K94-37871 (SL595U), and the K94-38062-x power board ID resistors.
Is the logic board actually the problem?
This is the most expensive board in the box and the one most often replaced by mistake. Several faults on these operators point to a cheaper part first.
| Symptom | Check first |
|---|---|
| Operator dead, no lights on the board | The transformer — K21-14182 on SL3000U/CSW200U, K21-3260-1 or K204A0276 on SL585U/SL595U — then this board |
| Board lights and responds, but the motor will not run | The motor drive / power board (K1D8402-1CC, K1D8284-1CC or K1D8424-1CC), not the logic board |
| Display shows the wrong operator type | The ID harness or resistor — see the box above |
| Gate will not run after fitting this board to an older operator | Missing monitored entrapment protection on the OPEN side — see the older-operator box above |
| Erratic travel, missed counts, gate stops short | The K2A0878 RPM encoder board (SL3000U, SL585U) or K1D8247 hall effect board (CSW200U); on the SL595U, the K13-32087 RPM cup and drive shaft |
| Loops or accessories not responding | The K1D8387-1CC expansion board, then the loop detector itself |
| Opens but will not close | A safety loop, photo eye or edge holding it open — not the board |
| Burnt smell, scorching or a bulged capacitor on this board | This board — replace it |
Fitting it
Have a bag of K77-37683 main board standoffs on hand in case the old ones break on removal. While the box is open, check the board-to-board harness (K94-34778 on the SL3000U) and replace it if the connectors are corroded.
The new board arrives unprogrammed. Set the travel limits and force, relearn every remote and transmitter, and re-enter timer, loop and accessory settings. On a commercial or multi-family gate, re-test every entrapment protection device to UL325 before returning the gate to service.
Fit surge protection at the same time. Storm damage is a leading cause of gate operator board failure. If this board died after a storm, the replacement is at the same risk unless the installation is protected.
Common questions
My board only says 014D1412B (or 001D9038-1CC). Is this the right one? Yes — both identify the K1D6761-1CC. If your board carries a different number, send us a photo before ordering.
Is it the same board on the SL3000U, CSW200U, SL585U and SL595U? Yes. The power board and transformer differ, so check the table above before ordering those.
Can I fit it to my older SL3000 or CSW200? Yes, but only with monitored entrapment protection in both directions — see the older-operator box above.
Is this genuine? Yes, genuine LiftMaster OEM.
Related
SL3000U parts · CSW200U parts · SL585U parts · SL595U parts · safety equipment, sensors & loops
Not sure which board you need? Send a photo of your existing board to parts@gatehousesupplies.com or call 866-965-5599. We would rather confirm it than have you fit the wrong board.
