Sharp ER-A530 Service Manual download pdf (Page 17)

ER-A520U/ER-A530U DIAGNOSTIC PROGRAM

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3) PRINTER TEST

Key operation

102

Test procedure

At the receipt side, the logo is also printed and the receipt is issued.

Check that:

The print is free from contamination, blur, and uneven density.

End of testing

The test will end automatically.

4) KEYBOARD TEST

Key operation

_ _ _ _104

KEY check sum code

2 Test procedure

The keyboard is checked using the sum check code of the key

code.

If the sum check code is not entered, the check is made using the

sum check code of the default keyboard arrangement

The sum check data for each model is entered to the front 4 digits

of the DIAG code, and that data is compared with the key data

added until the final key (CA/AT) is pressed.

Both data are the same, the test ends, printing the number given

below.

If both data are different, the printer prints the error message.

Check:

A) The content of completion print

End of testing

Note: Calculation of key sum check data

Hard codes (hexadecimal number) at the position (excluding

feed key) where there is an input data contact are added.

However, the end key (TL) is not added.

This data to which hard codes have been added is converted into

a decimal number value, which will become the sum check data

that will be entered when DIAG is started.

5) MODE SWITCH TEST

Key operation

105

Test procedure

The above X must be read in the correct order. (If the contact is

open, 9 will be displayed.)

3 Check:

The display during testing and the content of the completion print.

4 End of testing

6) PRINTER SENSOR TEST

1 Key operation

106

Test procedure

Check the status of the paper end sensor and head up sensor.

3 Check the following.

4 End of testing

You can exit the test mode by pressing any key and the printer

prints the following.

106

When the test ends normally:

104

When an error occurs: E – ~ –

104

CA/AT

R/J

PRINTER

SRV

OP display

5 lines of 24 digits are printed.

Enlargement

CA/AT

KEY

BOARD

SRV

OP display

KEY CODE

104

When the test ends normally

105

When an error occurs: E – ~ –

105

X: 1 - Paper present at the receipt side

O - No paper at the receipt side

Y: 1 - Paper present at the journal side

O - No paper at the journal side

CA/AT

MODE

105

SRV

OP display

MODE: SRV_PGM2_PGM1_OFF_OP X/Z_REG_MGR_X1/Z1_X2/Z2__SRV

X :

100293 456 7

CA/AT

R/J

SENSOR

SRV

OP display

106

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 32 33

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Sharp ER-A530 Service Manual Page 17

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