Ricoh B051 Service Manual page 462

BIT SWITCHES
Communication Switch 01
No FUNCTION
0
ECM
0: Off 1: On
1 Not used
2 Wrong connection prevention
to method
3 Bit 3 Bit 2
0 0
0 1
1 0
1 1
4-5 Not used
6 Maximum printable page length
to available
7 Bit 7 6 Setting
0 0 No limit
0 1 B4 (364 mm)
1 0 A4 (297 mm)
1 1 Not used
Communication Switch 02
No FUNCTION
0
Burst error threshold
0: Low 1: High
1 Acceptable total error line ratio
0: 5% 1: 10%
2 Treatment of pages received
with errors during G3 reception
0: Deleted from memory
without printing
1: Printed
B502
CÓPIA NÃO CONTROLADA
If this bit is set to 0, ECM is switched off for all
communications.
In addition, V.8 protocol and JBIG compression are
switched off automatically.
Do not change the setting.
(0,1) - The machine will disconnect the line without
sending a fax message, if the last 8 digits of the
Setting received CSI do not match the last 8 digits of the
None dialed telephone number. This does not work when
8 digit CSI manually dialed.
4 digit CSI (1,0) - The same as above, except that only the last
CSI/RTI 4 digits are compared.
(1,1) - The machine will disconnect the line without
sending a fax message, if the other end does not
identify itself with an RTI or CSI.
(0,0) - Nothing is checked; transmission will always
go ahead.
Note: This function does not work when dialing is
done from the external telephone.
Do not change the setting.
The setting determined by these bits is informed to
the transmitting terminal in the pre-message
protocol exchange (in the DIS/NSF frames).
If there are more consecutive error lines in the
received page than the threshold, the machine will
send a negative response.
The Low and High threshold values depend on the
sub-scan resolution, and are as follows.
Resolution 100 dpi 200 dpi
Low settings
High settings 12
If the error line ratio for a page exceeds the
acceptable ratio, RTN will be sent to the other end.
0: Pages received with errors are not printed.
72
CÓPIA NÃO CONTROLADA
SP No. 1-104-002
COMMENTS
SP No. 1-104-003
COMMENTS
400 dpi
3.85 l/mm 7.7 l/mm
6 12
24
15.4 l/mm
24
48
SM