Toshiba ST-B10 Series Maintenance Manual page 79

5. DIAGNOSTIC TEST OPERATION
5.4.4.1 PKBST-52 Test
For the POS keyboard (PKBST-52), the Control Lock operation and the key entry are checked in this test. It is
performed based on the keyboard layout of the standard PKBST-52.
If the key layout is changed from the standard one, another key position may respond in the test. In this case,
please refer to the value in the Key Scan Code column which indicates the programmed key position.
(1) Operation procedure
1. Select the PKBST-52 Test(1) button on the Keyboard Test Menu screen.
2. According to the control lock operation, the indicator moves to the corresponding position of the radio
button. Make sure that the indicator is shown on the current control key position.
3. When depressing a key on the POS keyboard, the corresponding key button on the screen is concave.
By depressing it again, the button returns. Perform this operation for all the keys on the POS keyboard.
If the double-width key or the double-length key is used on the POS keyboard, either area of the
corresponding key on the screen is concave.
4. When a key entry is performed on the POS keyboard, the scan key code and the corresponding key
name is displayed in the Key Scan Code edit box.
Display format: Scan key code (Key name) +Shift+Alt+Ctrl
5. When the Control Lock operation and the POS keyboard operation are performed correctly, click the
OK button or continuously depress the [0] button five times to terminate the test. If not, click the
NG button.
NOTE: To terminate the test by continuously depressing the [0] button five times, the 0 key should be
allocated to the position of the [0] button beforehand.
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5.4 Serviceman Diagnostic Test Program
EO18-12017