Diagnostics And Service Soft Switch - Sharp UX-A255U Service Manual

UX-A255U

[2] Diagnostics and service soft switch

1. Operating procedure
(1) Entering the diagnostic mode
Press FUNC 9
ROM Ver. TA18 After 2 sec: DIAG MODE
TA18
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 "WAIT A MOMENT" is indicated, press
the STOP key.
2. Diagnostic items
ITEM No. Contents
1 SOFT SWITCH MODE
2 ROM & RAM CHECK
3 AGING MODE
4 PANEL KEY TEST
5 CHECK PATTERN
6 SIGNAL SEND MODE
7 MEMORY CLEAR
8 SHADING MODE
9 ALL BLACK PRINT
10 AUTO FEEDER MODE
11 ENTRY DATA SEND
12 ENTRY DATA RECEIVE
13 FLASH MEMORY CHECK
14 FLASH MEMORY CLEAR
8 # 7 , and the following display will appear.
TA18
7
Soft switch mode
ROM & RAM check
Aging mode
Panel key test
Check pattern
Signal send mode
Memory clear
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.
Registered content is received, and its list is output.
Checks flash memory write/read.
Checks flash memory clearing.
key or the # key or select with the rapid key. Enter the mode with the START key.
DIAG MODE START
START
START
START
START
START
START
START
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
Flash memory clear
START
START Flash memory check
START
Entry data receive
START
Auto feeder mode
START
START
START
Function
Entry data send
All black print
Shading mode