Ricoh Pro C751EX - Page 230

Condition Cause Solution
Cannot connect with the TWAIN
driver.
User authentication has been
rejected.
Confirm the user name and login
name with the administrator of
the network in use if using
Windows authentication, LDAP
authentication, or Integration
Server authentication.
Confirm with the user
administrator if using basic
authentication.
Cannot connect with the TWAIN
driver.
The encryption key specified in
the driver does not match the
machine's driver encryption key.
Specify the driver encryption key
registered in the machine.
See p.155 "Specifying a Driver
Encryption Key".
Cannot connect with the TWAIN
driver.
The SNMPv3 account,
password, and encryption
algorithm do not match settings
specified on this machine.
Specify the account, password
and the encryption algorithm of
SNMPv3 registered in the
machine using network
connection tools.
Cannot authenticate using the
TWAIN driver.
Another user is logging in to the
machine.
Wait for the user to log out.
Cannot authenticate using the
TWAIN driver.
Authentication is taking time
because of operating conditions.
Make sure the LDAP server
setting is correct.
Make sure the network settings
are correct.
Cannot authenticate using the
TWAIN driver.
Authentication is not possible
while the machine is editing the
Address Book data.
Wait until editing of the Address
Book data is complete.
Cannot log out when using the
copying or scanner functions.
The original has not been
scanned completely.
When the original has been
scanned completely, press [ ],
remove the original, and then log
out.
9. Troubleshooting
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