Sharp FO-1660 Service Manual page 18

UX-600MU/MC
FO-1660U/C
3. Diagnostic items description
3. 1. Soft switch mode
Used to change the soft switch settings.
The soft switch which is stored internally is set by using the keys.
The available soft switches are SW-A1 to SW-M2.
The content of soft switches is shown in page 2-5 to 2-16.
The contents are set to factory default settings.
3. 2. ROM & RAM check
ROM executes the sum check, and RAM executes the matching test.
The result will be notified with the number of short sounds of the
buzzer as well as by printing the ROM & RAM check list.
Number of short sounds of buzzer 0 → No error
3. 3. Aging mode
If any document is first present, copying will be executed sheet by
sheet. If no document is present, the check pattern will be printed
sheet by sheet. This operation will be executed at a rate of one sheet
per 5 minutes, and will be ended at a total of 10 sheets.
3. 4. Panel key test
The mode is used to check whether each key properly operates or
not. Since the key is displayed on LCD when the key on the operation
panel is pressed, press all the keys. Here, finally press STOP key.
When STOP key is pressed, the keys not judged as "pressed" are
output in the result list. (The result list is not output in the process-di-
agnosis mode.) Here, the LED port can be turned on for CCD adjust-
ment during the time from the start of the panel check mode to the
end with the stop key.
3. 5. Check pattern
The mode is used to check the state of the printing head. It is ended
with the following pattern printed on one printing sheet.
1
Longitudinal stripe 2 Approx. 30 mm
2 black dots and 2 white dots are repeatedly progressed on
one line.
2
Full black
1 → ROM error
2 → RAM error (32Kbyte)
Approx. 30 mm
1
2
3. 6. Signal send mode
The mode is used to send various signals to the circuit during FAX
communication. Every push of START key sends a signal in the
following sequence. Moreover, the signal sound is also output to the
speaker when the line monitor of the soft switch is on.
[1] No signal (CML signal turned on)
[2] 9600bps
[3] 7200bps
[4] 4800bps
[5] 2400bps
[6] 300bps (FLAG)
[7] 2100Hz (CED)
[8] 1100Hz (CNG)
[9] END
The signal can be checked by plugging the handset into the TEL line
connector on the rear of the machine.
3. 7. Memory clear
This mode is used to clear the backup memory and reset to the
default settings.
3. 8. CCD adjust mode
This mode is used to adjust the optical system. Since the copy is
function performed, set the original. To abort the copy operation,
press the STOP key. To restart press the START key. When the copy
is completed or when the STOP key is pressed in the interruption
state, exit from this mode occurs.
3. 9. All black print
The mode is used to check the state of the printing head and inten-
tionally overheat it. Whole dots are printed over the interval of 2 m. If
it is overheated or the printing sheet is jammed, press STOP key for
the end.
3. 10. Auto feeder mode
The mode is used to check the auto feed function by inserting and
discharging the document. In this mode, the feed of the document will
be automatically tested if the document is set. Moreover, the number
of fed documents will be counted and be displayed on LCD.
3. 11. Entry data send
This mode is used to send the registered data to the remote machine
and make the remote machine copy the registered information. When
this mode is used for sending, the remote machine must be set to the
entry data receive mode.
The information to be sent is as follows.
1. Telephone number registration list
2. Sender registration list
3. Setting of optional setting
4. Soft switch setting
5. Junk FAX number
6. Timer reservation data (timer-communicatable type)
7. Bus code No. (only for the type with hold function)
8. Program/group information
9. Security switch for hold time
10. Registration data of caller ID and concerned
11. Setting of printer and concerned
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