Canon iPF750 series Service Manual page 237

3) Communication Test [COM-TEST]
(1) In service mode, referring to the "Service Mode Menu Tree", go to [COM-TEST] menu using
(2) Press [OK] key to start the test. ("=" is displayed at the start of the test.)
(3) During the communication test, "CHECK NOW" is displayed.
- Once the communication test is started, it cannot be cancelled.(Other operation won't be accepted until the result is obtained.)
(4) If the communication test was successful, "CHECK RSLT:OK" is displayed.
- Press key to exit this operation mode and go back to the top of [COM-TEST] menu.
(5) If the communication test was failed, "CHECK RSLT:NG" is displayed.
- Press key to exit this operation mode and go back to the top of [COM-TEST] menu.
- If you cannot obtain the result after 30 seconds from the start of a communication test, the test is considered failed and the same screen will appear.
* When the communication test was successful, it is necessary to take the interval of 5 minutes before performing the next communication test.
4) Communication Log [COM-LOG]
Communication Error Information/Detailed Communication Error Information can be displayed on the screen at the time of a communication error with the Service
Center (including proxy server error). When a communication error occurs, you can refer to this information to study how to deal with the problem.
* For the countermeasure corresponding to each Communication Error Information or Detailed Communication Error Information, see the list of error message in
"4. Troubleshoot".
(1) In service mode, referring to the "Service Mode Menu Tree", go to [COM-LOG] menu using
(2) Press key, and communication error information is displayed. On the upper line of the LCD, a log number (01-30) and an error code are shown; on the
bottom line, an occurrence date and time of the error is shown.
- COM-LOG information can be saved up to 30 cases.
- Use Right and Left keys to change logs to display.
- Logs are displayed in the sequence of the time of occurrence. (Log number 1 is the latest log.)
- Press key to exit this operation mode and go back to the top of [COM-LOG] menu.
* If the Communication Error Information is not saved, the screen below will appear.
C O M - T E S T
Y E S
F-7-27
C O M - T E S T
= Y E S
F-7-28
C O M - T E S T
C H E C K N O W .
F-7-29
C O M - T E S T
C H E C K R S L T :
F-7-30
C O M - T E S T
C H E C K R S L T :
F-7-31
E - R D S
C O M - L O G
F-7-32
N o : 0 1 X X X X X X X X H
Y Y Y Y / M M /
F-7-33
C O M - L O G
N O L O G
F-7-34
key and
.
O K
N G
key and key.
D D H H : M M
key.
Chapter 7
7-29