Diagnostic Operation - Casio QT-2000 Service Manual

8.DIAGNOSTIC PROGRAM
1. Starting the diagnostic program
(1) While holding down the button on the upper left corner (9 on the standard keyboard sheet), turn the power on.
(2) Release the button when the cash register beeps a buzzer sound.
(3) Using 10-key pad, input [9][9][9][9][9][0][0][0][0][0] then press [SUB TOTAL].
Note: While in the diagnostic mode, use the right half of the SUB TOTAL button for [SUB TOTAL] operations.
2. List of the diagnoses
Command
Device to be checked
code
1 Rear display
2 Remote display
3 RJ printer
4 Slip printer
5 Keyboard
6 OBR
7 MCR
9 Drawer
10 Buzzer
11 Switches
12 Clock
13 ROM
14 RAM
15 RAM
16 MRAM
17 MRAM
20 Low-Inline
21 Low-inline
25 Async online
30 Infrared port
31 Infrared port
Operation
n01
n02
n03 RS-232C COM2 test
n04
n05 buttons 1 to 168 check
n06 RS-232C COM1 test.
Use checker bar code.
n07 Use checker magnetic card.
n09
n10
11
n12
n13 EPROM (128kB) x 1
n14 Read/Write check
n15 Read check
n16 Read/write check
n17 Read check
nm20 Transmit check
nm21 Receive check
m25 Loop back test
30 Infrared port receive test
n31 Infrared port transmit test
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Note