Sharp UX-B20, Service Manual

Page: 17 / 124

UX-B20U/UX-B20C/B25C
2 – 4
4. Entering the printer diagnostic mode
5. Printer diagnostic items
6. Printer diagnostic items description
6.1. 4% data print aging
This mode is the aging mode that prints the text pattern of 4%
6.2. ASF aging (all white)
This mode is the aging mode that tests the performance of the ASF
function.
6.3. ASF skew check aging
This mode is the aging mode that tests the performance of the ASF
function.
Detailed of check patterns
1. Top skew
2. Bottom skew
3. Top margin
4. Bottom margin
6.4. Cross pattern
This mode prints the test pattern that tests the performance of the
printer.
6.5. Initial cartridge data setting
This mode makes the dot counter the setting for initial cartridge, and
this mode resets the following counter.
1. Replacement counter of the cartridge
2. Paper jam counter
Item No. Contents Function
1 4% DATA PRINT AGING 4% of printing data continue to be printed.
2 ASF AGING The feed of the paper is continued.
3 ASF SKEW CHECK AGING The frame pattern continues to be printed to check the inclination performance.
4 CROSS PATTERN The image data of the cross pattern to be printed.
5 INITIAL CARTRIDGE DATA SETTING It makes the dot counter the setting for the initial cartridge.
6 IJP LIST MODE The maintenance data is printed.
7 PRINTER ERROR CHECK MODE The cause of “PRINTER ERROR” message is displayed.
Press FUNC 9 8 # 6 , and the following display will appear.
PRINT DIAG MODE
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 diagnostic mode cannot be set, repeat the diagnostic mode operation, performing 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
Engineering) "WAIT A MOMENT" clock indication may appear depending
on STOP key timing. If the STOP key is held down, "MEMORY CLEAR?"
appears.
FUNC
PRINT DIAG MODE
9 8 6
START 4% DATA PRINT AGING
ASF AGING
ASF SKEW CHECK AGING
CROSS PATTERN
INITIAL CARTRIDGE DATA SETTING
START
START
KEY
STOP
KEY
+
"Power ON"
START
START
START
START
START IJP LIST MODE
START PRINTER ERROR CHECK MODE
START/
MEMORY