Service manual

UX-B20U/UX-B20C/B25C
2 – 2
[2] Diagnostics and service soft switch
1. Entering the diagnostic mode
2. Diagnostic items
ITEM No. Contents Function
1 SOFT SWITCH MODE Soft switches are displayed and changed. List can be output.
2 ROM & RAM CHECK ROM sum-check and RAM is matched. Result list is output.
3 AGING MODE 10 sheets of check patterns are output every 5 minutes per sheet.
4 PANEL KEY TEST Panel keys are tested. Result list is output.
5 CHECK PATTERN Check pattern is output.
6 SIGNAL SEND MODE Various signals of FAX communication are output.
7 MEMORY CLEAR Back-up memory is cleared, and is set at delivery.
8 SHADING MODE Shading compensation is performed in this mode.
9 AUTO FEEDER MODE Insertion and discharge of document are tested.
10 ENTRY DATA SEND Registered content is sent.
11 ENTRY DATA RECEIVE Registered content is received, and its list is output.
Press FUNC → 9 → → 8 → # → 7 , and the following display will appear.
ROM Ver. TC25 or TC44
After 2 sec: DIAG MODE
TC25 (UX-B20U)
TC44 (UX-B20C/UX-B25C)
Then press the START key. Select the desired item with the UP key or the DOWN 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.
In relation with the process response (request from Production Engi-
neering) "WAIT A MOMENT" clock indication may appear depending on
STOP key timing. If the STOP key is held down, "MEMORY CLEAR?"
appears.
+
"Power ON"
FUNC
DIAG MODE
9 8 7
STARTSoft switch mode
START
TC25 or TC44
STARTROM & RAM check
STARTAging mode
STARTPanel key test
STARTCheck pattern
STARTSignal send mode
START
START
START
START
START
Entry data rcv.
Entry data send
Auto feeder mode
Shading mode
Memory clear
START
KEY
STOP
KEY
START/
MEMORY