Xerox WorkCentre Pro 423 Service Manual page 226

WorkCentre Pro 423/428
Chain Function Item
57 630 G3 protocol minimum scan capability
57 640 Communication Declaration Paper Size
(1)
57 641 Communication Declaration Paper Size
57 650** Sending G3M0 TSI/CIG Send
57 651 Sending G3M CSI Send
57 652 Sending local terminal name
57 660 TCF check
57 661** G3M0 Tap Hold
2-194
03/02
Content Default
0:20ms(T7.7) 1:5ms(T7.7) 07
2:10ms(T7.7) 3:20ms(2T7.7)
4:40ms(2T7.7) 5:40ms(2T7.7)
6:10ms(2T7.7) 7:0ms(T7.7)
Total value of 332(01
4=A4 LEF 8=A5 LEF 4C)
64=B5 LEF 256=Letter LEF
Total value of 1830(0
2=A3 4=A4 32=B4 256=Letter 726)
512=Legal 1024=Letter double
0:AUTO 00
1:forced sending
2:not sending
0:Send 1:No to send 00
0 : Off 1 : On 01
0:Normal 1:EQM/TCF not to be 00
checked
0:Off 1:On 00
CHAPTER 2 TROUBLESHOOTING
How to use the Diagnostic C/E Mode
Description
Selects handling of the minimum scan capability that can be instructed by ITU-
T. In the transmission with VAN service using the old type G3 Fax or
computer system, transmission failure may occur if machine instructs to use
0ms. In such a case, change the data to 2-10ms. Customer's approval is
required for changing the data as the transmission performance will be abated.
Selects the LEF paper size transmittable. Normally, set up data as described
in Chain=057 and Function=502/503. (as paper selected by user)
Selects the SEF paper size transmittable. Normally, set up data as described
in Chain=057 and Function=502/503. (as paper selected by user)
Determines whether or not to transmit the TSI/CIG signal to inform the remote
terminal of the G3 ID code data. The "Auto" setup on delivery means that the
TSI/CIG signal can be transmitted only when CSI signal from the receiving
terminal is detected. This is because the old type G3 Fax machine may
generate transmission failure when it receives the TSI /CIG signal. In the in-
company toll dialing system where voice compression rate is high (eg. 16K9,
the TSI/CIG signal may generate an error and result in the following DCS
signal not detected. In such a case, change the TSI/CIG signal to "Not to
send" and conduct transmission test.
Determines whether or not to send the CSI signal to inform the remote
terminal of the G3 ID code data. "Send" is selected on delivery. In the in-
company toll dialing system where voice compression rate is high (eg. 16K9,
the CSI signal may generate error and result in the following DIS signal not
detected. In such a case, change the CSI signal to "Not to send" and conduct
transmission test.
Determines whether or not to insert the local terminal name registered in the
non standard NSF/NSC/NSS signal and inform the remote terminal of it.
Modem training by sending 0 data for 1.5 sec. is performed before actual
transmission of images so that an appropriate mode speed to match the line
quality can be selected. This data determines whether or not to enable the
training (TCF signal). By selecting Normal, TCF will be cheched and
compared to EQM. In case error bit ("1") is detected or the EQM data is over
the standard, FTT signal will be transmitted.
At G3 FAX protocol, modem training is conducted at Phase B and Phase C1.
When the difference is over the standard, the receive side releases the line.
Tap Hold feature is to lock the modem status equalized by the TCF signal in
the environment where the line quality can be significantly changed, and to
ignore the modem status that can be reset by the training signal prior to image
data so that the line quality changes can be absorbed in the protocol.
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