FO-780A
[2] Diagnostics and service soft switch
1. Operating procedure
(1) Entering the diagnostic mode
Press FUNC
→
9
→
→
8
→
#
→
7 , and the following display will appear.
ROM Ver. FMU0 After 2 sec: DIAG MODE
FMU0
Then press the START key. Select the desired item with the
key or the # key or select with the rapid key. Enter the mode with the START key.
(Diag
•
specifications)
If the diag mode cannot be set, repeat the diag mode operation, per-
forming the following operation.
After the power is turned on and "WAIT A MOMENT" is indicated, press
the STOP key.
2 – 2
In relation with the process response (request from Production
Engineering) "WAIT A MOMENT" clock indication may appear depending
on STOP key timing. If the STOP key is held down, "MEMORY CLEAR?"
appears.
2. Diagnostic items
ITEM
DIRECT
No.
key
1
1
SOFT SWITCH MODE
Soft switches are displayed and changed. List can be output.
2
2
ROM & RAM CHECK
ROM is sum-checked, and RAM is matched. Result list is output.
3
3
AGING MODE
10 sheets of check patterns are output every 5 minutes per sheet.
4
4
PANEL KEY TEST
Panel keys are tested. Result list is output.
5
5
CHECK PATTERN
Check pattern is output.
6
6
SIGNAL SEND MODE
Various signals of FAX communication are output.
7
7
MEMORY CLEAR
Back-up memory is cleared, and is set at delivery.
8
8
SHADING MODE
Shading compensation is performed in this mode.
9
—
ALL BLACK PRINT
To check the print head, whole dots are printed over the interval of 2 m.
10
—
AUTO FEEDER MODE
Insertion and discharge of document are tested.
11
—
ENTRY DATA SEND
Registered content is sent.
12
—
ENTRY DATA RECEIVE Registered content is received, and its list is output.
Contents
Function
FUNC
DIAG MODE
9
8
7
START
1
Soft switch mode
START
2
ROM & RAM check
START
3
Aging mode
START
4
Panel key test
START
5
Check pattern
START
6
Signal send mode
Shading mode
START
START
All black mode
START
Auto feeder mode
START
Entry data send
Entry data receive
START
START
8
START
KEY
STOP
KEY
+
+
"Power ON"
Memory clear
(Work + Backup)
FMU0
Memory clear
START
7
Summary of Contents for FO-780A
Page 64: ...FO 780A Control PWB parts layout Top side 6 7 ...
Page 65: ...FO 780A Control PWB parts layout Bottom side 6 8 ...
Page 68: ...FO 780A 6 11 TEL LIU PWB parts layout Top side ...
Page 69: ...FO 780A TEL LIU PWB parts layout Bottom side 6 12 ...
Page 71: ...FO 780A Power supply PWB parts layout 6 14 ...
Page 101: ...FO 780A M E M O 18 ...