Sharp XE-A402 Service Manual page 12

PC-UM10M
3) PRINTER TEST
1 Key operation
102 3
RCPT/PO
2 Test procedure
OP display
R / J
5 lines of 24 digits are printed.
At the receipt side, the logo is also printed and the receipt is issued.
3 Check that:
The print is free from contamination, blur, and uneven density.
4 End of testing
The test will end automatically.
4) KEYBOARD TEST
1 Key operation
_ _ _ _104 3
RCPT/PO
2
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.
OP display
K E Y B O A R D
1 0 4
3 Check:
A) The content of completion print
4 End of testing
When the test ends normally:
When an error occurs:
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.
P G M
P R I N T E R
Enlargement
P G M
KEY CODE
1 0 4
E – ~ – 1 0 4
XE-A402 DIAGNOSTIC PROGRAM
5) MODE SWITCH TEST
1 Key operation
105 3
RCPT/PO
2 Test procedure
OP display
M O D E
1 0 5
MODE: PGM_VOID_OFF_OP X/Z_REG_MGR_X1/Z1_X2/Z2__PGM
1 2 9
X :
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
When the test ends normally
When an error occurs:
6) PRINTER SENSOR TEST
1 Key operation
106 3
RCPT/PO
2 Test procedure
Check the status of the paper end sensor and head up sensor.
OP display
R / J
1 0 6
3 Check the following.
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
4 End of testing
You can exit the test mode by pressing any key and the printer prints
the following.
1 0 6
7) CLOCK TEST
1 Key operation
107 3
RCPT/PO
2 Test procedure
OP display
T I M
1 0 4
3 Check that:
"–" blinks and the clock counts up.
– 11 –
S W P G M
3 4 5 6 7
1 0 5
E – ~ – 1 0 5
P G M
S E N S O R
X
E R C H E C K P G M
Hour Min.
Blinks at an interval of 0.5 sec.
X
1
Y
Sec.