XE-A213 (serv.man4). XE-A213 Service Manual - Sharp ECR Service Manual (repair manual). Page 16

XE-A203V/A213V

DIAGNOSTIC PROGRAM

– 14 –

The test items are as follows.

*How to start DIAG.

1 Key operation

100 

3 

2 Test procedure

The following display modes are repeated.

1. Segment display (All digits)

Each segment is lighted one by one sequentially. When ANY
key is pressed, the segment is shifted to the next one.
At the same time, the continuous buzzer sound is made. After
completion of all the segments, the shift display is made.  

2. Shift display

All the segments are lighted from the lowest digit. When ANY
key is pressed, the segment is shifted to the next digit.

3. All-digit all-segment lighting

All digits and all segments ate lighted. 

3 Check item

A) Check that each position is displayed properly.

B) Check that the brightness of each display is even without blur. 

C) Check that the buzzer sound is normal.

4 Test end

Normal end with "PO" key. When other than "PO" key except for the
paper feed key is pressed, it is judged as an error and the following
print is made.  
The buzzer is stopped.

Code

Description

1)

100

Rear display buzzer test

2)

101

Key code

3)

102

Printer test (Z print 5-lines)

4)

104

Keyboard test

5)

105

Mode switch test

6)

106

Printer sensor test

7)

107

Clock display test

8)

108

Front display test

9)

110

Drawer open test

10)

120

External RAM test

11)

121

CPU internal RAM test

12)

140

FLASH ROM test 1 (Check sum)

13)

160

AD conversion port test (1)

14)

520

USB test 1 (ID/ADRESS print)

Mode SW

: PGM mode

Key operation : Each diagnostic program is booted with the above

code + "PO" key.

PO

0 1 2 3 4 5 6 7 8 9 A B C D E F

OP display

R . D I S P   &   B U Z   1 0 0

 

Abbreviated hereinafter

 

Abbreviated hereinafter

 

100 

 

  DISPLAY or BUZ ERROR 100

Nomal

Error

3

3