Epson WF-C5790 Service Manual page 204

EPSON WF-C5790/WF-C5790a/WF-C5710/ET-8700/WF-C5210/WF-C5290/WF-C5290a
No. Parameter Name
111 MODEM MODE
112 CODING
113 ECM
114 SIGNAL INTERVAL
115 ---
116 ---
117 ---
118 ---
119 ---
120 TX SIGNAL LEVEL
121 RX SIGNAL DET LEVEL
122 TX EQUALIZER
123 RX EQUALIZER
124 ---
125 ---
Troubleshooting
Table 4-6. FAX Service Parameter Table
Setting Range Initial value
V.27ter
V.17
V.34
V.29
V.34
MH
MR MMR
MMR
On
On
Off
100 ms
200 ms 100 ms
300 ms
0~15 10
-48 dBm
-43 dBm
-43dBm
-38 dBm
-33 dBm
0 dB
1.8 dB
0 dB
3.6 dB
7.2 dB
0 dB
1.8 dB
3.6 dB
3.6 dB
7.2 dB
Fax Troubleshooting
Unit
Linking with communication mode of fax setting
V.34 requires ECM
MMR requires ECM
It is linked with error correction (ECM) of fax setting.
When ECM = OFF, V34 / MMR / color communication becomes invalid.
Procedure Adjust signal time between signals.
When an error occurs in communication procedure due to line echo / delay
etc.
-dBm If communication data error occurs, adjustment will improve symptoms.
When a communication data error occurs, if the line noise is high,
it is improved by lowering the sensitivity (-43 dBm → -38 dBm, -33 dBm)
When a sending error occurs due to poor line characteristics.
When there is a reception error due to poor line characteristics.
Revision A
Remark
204
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