Touch Key Pad Test; Linearity Test; Clerk Key Diagnostics; Clerk Key Check - Sharp UP-5700 Service Manual

2) Touch Key Pad Test

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The driver function call is used.
is displayed at the four corners of the LCD sequentially.
(In the sequence of upper right, upper left, lower left, lower right.)
When is touched by the operator, it turns to
Display
Touch Key Pad Test
Touch Cursor !!
Terminating method
Touch all the four or press Esc key to terminate.

3) Linearity test

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Red lines are displayed at the both sides of the blue line at the
center. The operator must touch the blue line without touching the
red lines.
The touched part of the blue line is changed to white.
If the red line is touched, an error message is issued.
Display
Linearity
Test
Complete!
(Error!!)
Displayed after termination.
Red line
Blue line
Terminating method
Press Esc key to terminate,
.
About 2cm
About 1cm
Red line

3-7. Clerk Key Diagnostics

The clerk key input test is performed.
Pressing Esc key returns to the serviceman diagnostics menu.

1) Clerk Key Check

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Key code inserted to the clerk key switch is displayed in decimal.
Display
Clerk Key Check
Clerk Key Code :
The clerk code is displayed at XX.
Terminating method.
Press Esc key to terminate.

3-8. Printer Diagnostics

Parallel interface (standard) and ER-A8RS parallel interface (option)
are tested.
Here, parallel interface on the main body is mentioned as PARAL-
LEL1, and parallel interface on ER-A8RS as PARALLEL 2/3.
The following menu is displayed.
The highlighted cursor is moved by the cursor keys (UP
) of the AT keyboard. Move the cursor to the desired item, and press
Enter key to execute the selected diagnostics program.
When the selected diagnostics program is completed, the display
returns to the menu screen. Pressing Esc key returns to the service-
man diagnostics menu.
Printer Diagnostics
Standard
PARALLEL 1 Loop Check
PARALLEL 1 Print Check

1) PARALLEL1 Loop Check

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Loop check is made for the standard I/O address 378H
(PARALLEL1)
In the loop check, a normally-operating ER-A8RS is inserted and
the loop cable (UKOG-6717RCZZ) of the following wiring diagram
is connected with PARALLEL1 and PARALLEL3 (ER-A8RS) for
testing. Set the jumper on the PWB during test as follows:
4 – 6
xx
and DOWN
Option(ER-A8RS)
PARALLEL2 Loop Check
PARALLEL3 Loop Check
PARALLEL2 Print Check
PARALLEL3 Print Check
37FH.