UP-800 (serv.man23). UP-820N, UP-820F Service Manual - Sharp ECR Service Manual (repair manual). Page 16

UP-820N/820F (V)

DIAGNOSTICS SPECIFICATIONS

5 – 6

x. “H” pattern. “H” is displayed in 40 digits and 11 lines.

“H” is displayed in 39 digits only in the 11th line.

3 How to exit the program.

You can exit the program by pressing the ENTER key when the final
test pattern is shown on screen or by pressing the CANCEL key

during checking.

1 Check content

The test pattern is displayed according to the following check proce-

dures. When the panel or any key is pressed, the next pattern is dis-

played. When the panel or any key is pressed with the last pattern
displayed, this diagnostics is terminated. 

I. A cross mark “+” is displayed in black at the specified positions,

and the background is in white. 

<UP-800 series (6.5 inch)> 

II. The cross marks “+” are deleted, and all the area is displayed in

white. 

2 Termination method

When the panel or any key is pressed with the last pattern dis-

played, the operation is terminated.

1 Check content

All the area is displayed in a same color phase; 16 gradations of

white to black. When the panel or any key is pressed, the nest pat-
tern is displayed. 

2 Termination method

When the panel or any key is pressed with the last pattern dis-

played, the operation is terminated.

1 Check content

All the area is displayed in a same color, and the display color is
switched in every 2 sec. The display colors are shown in the Color

Palette attached separately. 

The colors in the Color Palette are switched and displayed in every
2 sec. 

The above operation is looped until the end. 

2 Termination method

When the panel or any key is pressed, the operation is terminated.

1 Check content

Black squares on the white background are displayed as shown

below. 

• UP-800 series 6.5” LCD pattern

When the panel or any key is pressed, the screen is switched to

#808080 (Gray) background display. 

2 Termination method

When the panel or any key is pressed with the last pattern dis-
played, the operation is terminated.

The display tests of the option rear display and the option pole display

are performed. For connection, note the following. 

•  Option rear display (UP120DP)

UP-350 Connect to the internal connector (RS CH5).

•  Option pole display (UPP20DP)

UP-3500 and UP-800 series Connect to RS CH5.

*In the test program, the following patterns are displayed. When the

panel or any key is pressed after second lighting of all digits, the

screen returns to the diagnostics menu. 

1 Check content

The test patterns are displayed in the following procedures. When
the panel or any key is pressed, the nest pattern is displayed. 

i. The following test patterns are displayed. The decimal point is

shifted digit by digit from the lower digit. 

LINE 1 : 0 1 2 3 4 5 6 7 8 9 ; A a B b C

LINE 2 : 0 1 2 3 4 5 6 7 8 9 ; A a B b C

ii. The test pattern of lighting all the digits is displayed.

2 Display

3 Termination method

When the panel or any key is pressed, the rear display and the pole

display are turned OFF and the operation is terminated. 

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Rear Display  Check

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