Service manual

Bit Switches
SM Appendix 5-37 D127/D128
Appendix:
Fax Trouble-
Shooting
Guide
Communication Switch 01 [SP No. 1-104-002]
No FUNCTION COMMENTS
0
ECM
0: Off 1: On
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.
1 Not used Do not change the setting.
2-3
The trigger selection for the
G3 misconnecting protection
00: OFF
01: All CSI digits un-corresponded
10: The last 4 CSI digits un-corresponded
11: CSI and RTI absence
4-5 Not used Do not change the setting.
6-7
Maximum printable page
length available
Bit 7: 0 Bit 6: 0 = No limit
Bit 7: 0 Bit 6: 1 = B4 (364 mm)
Bit 7: 1 Bit 6: 0 = A4 (297 mm)
Bit 7: 1 Bit 6: 1 = Not used
The setting determined by these bits is informed to
the transmitting terminal in the pre-message
protocol exchange (in the DIS/NSF frames).
Communication Switch 02 [SP No. 1-104-003]
No FUNCTION COMMENTS
0
G3 Burst error threshold
0: Low 1: High
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.
100 dpi
6(L)
12(H)
200 dpi
12(L)
24(H)
300 dpi
18(L)
36(H)
400 dpi
24(L)
48(H)