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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
(Diag•specifications)
FUNC
9
8
7
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. Diagnostic items
ITEM
DIRECT
Contents
No.
key
1
1
SOFT SWITCH MODE
2
2
ROM & RAM CHECK
3
3
AGING MODE
4
4
PANEL KEY TEST
5
5
CHECK PATTERN
6
6
SIGNAL SEND MODE
7
7
MEMORY CLEAR
8
8
SHADING MODE
9
—
ALL BLACK PRINT
10
—
AUTO FEEDER MODE
11
—
ENTRY DATA SEND
12
—
ENTRY DATA RECEIVE Registered content is received, and its list is output.
FMU0
DIAG MODE
Soft switch mode
START
ROM & RAM check
START
Aging mode
START
Panel key test
START
Check pattern
START
Signal send mode
START
STOP
KEY
+
"Power ON"
Memory clear
(Work + Backup)
Soft switches are displayed and changed. List can be output.
ROM is sum-checked, and RAM is matched. Result list is output.
10 sheets of check patterns are output every 5 minutes per sheet.
Panel keys are tested. Result list is output.
Check pattern is output.
Various signals of FAX communication are output.
Back-up memory is cleared, and is set at delivery.
Shading compensation is performed in this mode.
To check the print head, whole dots are printed over the interval of 2 m.
Insertion and discharge of document are tested.
Registered content is sent.
key or the # key or select with the rapid key. Enter the mode with the START key.
START
1
2
3
4
5
6
START
KEY
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 – 2
START
START
START
START
8
START
7
START
Function
Entry data receive
Entry data send
Auto feeder mode
All black mode
Shading mode
Memory clear
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