Diagnostics And Service Soft Switch - Sharp FO-475TH Service Manual

[2] Diagnostics and service soft switch

1. Operating procedure
(1) Entering the diagnostic mode
Press FUNC 9
ROM Ver. FKD0 After 2 sec: DIAG MODE
FKD0
Then press the START key. Select the desired item with the
(Diag specifications)
FUNC 9 8
If the diag mode cannot be set, repeat the diag mode operation, per-
forming the following operation.
After the power is turned on and "ESPERE POR FAVOR" 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 MODE Check pattern is output.
6 6 SIGNAL SEND MODE
7 7 MEMORY CLEAR MODE Back-up memory is cleared, and is set at delivery.
8 8 SHADING MODE
9 9 ALL BLACK MODE
10 10 AUTO FEEDER MODE
11 ENTRY DATA SEND
12 ENTRY DATA RECEIVE Registered content is received, and its list is output.
13 FLASH MEMORY CHECK Flash memory is checked.
14 FLASH MEMORY CLEAR Data of flash memory is cleared.
8 # 7 , and the following display will appear.
FKD0
7 DIAG MODE
Soft switch mode
ROM & RAM check
Aging mode
Panel key test
Check pattern mode
Signal send mode
Memory clear mode
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.
Various signals of FAX communication are output.
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
START 1
START 2
START 3
START 4
START 5
START 6
START 7
START
In relation with the process response (request from Production
KEY
Engineering)
+
appear depending on STOP key timing. If the STOP key is
held down,
"
Function
2 – 2
START Flash memory clear
START Flash memory check
START
START
10 START
9 START
8 START
clock indication may
"ESPERE POR FAVOR"
MEMORY CLEAR? appears.
"
UX-258TH
FO-475TH
Entry data receive
Entry data send
Auto feeder mode
All black mode
Shading mode