Ricoh A250 Service Manual page 591

3.1.1 D-CHANNEL LAYER MANAGEMENT
Code
7-00 Link reset
7-01 Link set-up failed because of a time-out
7-02 Link release failed because of a time-out
7-03 Link set-up parameter error
3.1.2 D-CHANNEL, LAYER 1
Code
7-10 T3 timeout (layer 1 activation error)
7-11 No connection on the S0 interface
7-12 Deactivated
3.1.3 D-CHANNEL LINK LAYER
Code
7-20 At the start of link set-up, the machine received an unsolicited S
(F=1)
7-21 At the start of link set-up, the machine received an unsolicited DM
(F=1)
7-22 At TEI release, the machine received an unsolicited UA (F=1)
7-23 At the start of link set-up, the machine received an unsolicited DM
(F=0)
7-24 At TEI release, the machine received an unsolicited UA (F=0)
7-25 SABME received at the start of network link set-up
7-26 N200 retransmission error for SABME
7-27 N200 retransmission error for DISC
7-28 N200 retransmission error for situation enquiry (RR)
7-29 N(R) sequence number error
7-30 N(S) sequence number error
7-31 FRMR received
7-32 Non-standard frame received
7-33 Abnormal frame length
7-34 N201 error; information field N in the I frame exceeded N201
7-35 T201 timeout; timeout while waiting for checking
7-36 T202 timeout; timeout while waiting for ID assignment
SM
Probable Cause
Probable Cause
Probable Cause
1-21
ERROR CODES
Action
2
2
2
2
Action
1
1
1
Action
2
2
2
2
2
No
error
2
2
2
3
3
3
3
3
3
3
3
A250