CO schlage button not

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Make sure the lock AA batteries are good. 4.8 VDC or higher.
When in its “Active state”, the mechanical key switch can prevent USB connection. Make sure the lock key cylinder and tailpiece are properly installed.
Make sure the mechanical triangles on the back of the outside escutcheon are aligned properly.  See the installation instructions at www.schlage.com/support Schlage Technical Support.&nbs...
If the Schlage Utility Software pops up a "E201 error", just ignore it, and tap "Device Options" or update your firmware. See 78451  
Make sure the HHD/SUS is set to USB communication by checking the small icon right of the "No Device Connected" message.  The symbol should be a USB symbol when working with USB enable product...
Use a multi-meter in series with the batteries to measure battery current.  Be sure your multi-meter can accurately measure very low current, in the micro-amp range. See the attached Technical Not...
When the SUS and HHD are used in the “Auto Update” mode, the audit info will be automatically gathered each time the SUS is successfully connected with a lock.
If a 4600 clicks, but won't open the door: Verify proper connection of all the control box connectors. Verify correct manual operation of door. Verify actuator connections and any strike/maglo...
ND-series locks manufactured on or after January 30, 2017 use a different levers for cylinders and push/push-to-turn buttons.03-230 - Closed03-231 - Privacy & Cylinder- Schlage KIL (P,L)03-232 ...
ND-series locks manufactured prior to January 30, 2017:03-030 - Closed03-031 - Privacy, Cylinder- Schlage KIL (P,L) & Push or Push & Turn Button03-032 - Schlage FSIC 03- 000 - Schlage ...
If the error "Device does not support this action - E802" appears when trying to couple the lock, it is generally because the user is not pressing the SW1 tamper button 3 times, but instead pressin...
In order to properly couple, the interior pushbutton must be held down while tapping the SW1 (tamper switch) three times.  This will enable the lock to couple to the HHD.
On power-up the CO-Series locksets will provide 5 quick RED Schlage Button flashes and 5 quick beeps to indicate that the electronics (credential reader) has been changed.  In order to recover...
When/If the electronics (Credential Reader) changed on a CO-Series lockset, the lock will respond with 3 RED Schlage button flashes and 3 beeps for any key press or credential presentation.&nb...
CO Reader Modules cannot be replaced by Reader Modules with a different credential type; for example, a magnetic swipe credential reader cannot be replaced with a proximity credential rea...
A Credential Reader MAY be replaced with another Credential Reader of the same type; however, a Factory Default Reset must be performed before the lock will function properly.
This change was implemented in firmware package CO.A.6 (or later) to help the customer in the communication and coupling process between the CO200 (CO250) and the hand held device (HHD). ...
The green LED is to be lit up until the spindle (Triangles and Key Switch) are aligned properly; providing a visual indication of the problem.  
If the mechanical alignment of the triangles on the back of the outside escutcheon are not aligned, the CO200 or CO250 will not connect with the SUS/HHD and will appear to be unresponsive...
In firmware CO.A.6 (or later) the Schlage button on the CO200 (CO250) will turn green anytime that the spindle triangles on the front escutcheon are out of alignment or the mechanical key switch is...
When unlocking the CO200 door by mechanical key override, the green led will be continuously ON until the key is released. This will occur after firmware CO.A.6 (or later) has been installed int...
A design change occurred in 2001 to address a locking/unlocking issue with the discontinued D73 lever locks.  This included modifying the cam and plug, spindle and using a different plung...
CO Reader Modules are not individually replaceable, nor can they be swapped between locks. The inside and outside assemblies of a CO lock are a matched/mated set and cannot be swapped to change rea...
Causes for AA battery drain in CO-Series LOCKS - Possible Cause Fix/Corrective Actions  One of the four AA batteries was inserted reversed and the reserved battery drains the other batteries. ...
The only Schlage lock with a toggle was the discontinued K-Series mortise lock.
1. Press and hold the Schlage button. Wait for the lock to beep twice and two green blinks of the Schlage button, indicating a confirmation. 2. After confirmation signals, release the Schlage butt...