Sharp GX15 Service Manual page 41

4.7. Password reset
SPST resets the password [handset (phone) code is set to "0000"].
<Operation>
1) Set the COM port on the SPST initial screen and click "User Password Reset". Click "Yes" to reset. Click "No" to exit.
2) When completed, the following appears.
CONFIDENTIAL
Figure 61
Figure 62
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GX15