Canon MF720 Series Service Manual page 318

Item
RELAY-1
Title
Details
Use case
Adj/set/operate method
Caution
Display/adj/set range
Default value
Related service mode
RELAY-2
Title
Details
Use case
Adj/set/operate method
Caution
Display/adj/set range
Default value
Related service mode
FREQ
Title
Details
Adj/set/operate method
Caution
Display/adj/set range
Default value
G3TX
Title
Details
TESTMODE > FAX > MODEM
NCU relay test 1
N To test ON/OFF of relay and port switch of NCU.
This mode is disabled for an NCU with no relay and port switch.
When analyzing the cause of a problem
Enter the setting value, and then press Apply key.
Be sure to set the value back to 0 after the test.
0 to 6
0: All OFF
1: CML ON/OFF
2: P ON/OFF
3: S ON/OFF
4: H ON/OFF
5: HD ON/OFF
6: R ON/OFF
0
TESTMODE > FAX > MODEM > RELAY-2
NCU relay test 2
To test ON/OFF of relay and port switch of NCU.
This mode is disabled for an NCU with no relay and port switch.
When analyzing the cause of a problem
Enter the setting value, and then press Apply key.
Be sure to set the value back to 0 after the test.
0 to 7
0: All OFF
1: CIST2 ON/OFF
2: C1 ON/OFF
3: NORG ON/OFF
4: DCSEL ON/OFF
5: DCLIM ON/OFF
6: IPSEL1 ON/OFF
7: IPSEL2 ON/OFF
0
TESTMODE > FAX > MODEM > RELAY-1
To test whether the specified frequency is oscillated.
By closing or opening the DC circuit in accordance with the setting value, the specified frequency is oscil-
lated by the tone transmission function of the modem.
Check this with the speaker.
When analyzing the cause of a problem
Enter the setting value, and then press Apply key.
Be sure to set the value back to 0 after the test.
0 to 7
0: OFF
1: 462 Hz
2: 1100 Hz
3: 1300 Hz
4: 1500 Hz
5: 1650 Hz
6: 1850 Hz, 7: 2100 Hz
0
G3 signal transmission test
To test whether the specified G3 signal is transmitted.
By closing or opening the DC circuit in accordance with the setting value, the specific G3 signal pattern is
transmitted at the specified transmission speed by the G3 signal transmission function of the modem.
Check this with the speaker.
Description
310
8. Service Mode