Visara 1481 - Manual (Page 65)

701408-002 6-1
Chapter 6. Problem Determination
and Maintenance
Diagnostic Testing Function
The 1481 Display Station can perform two types of diagnostic tests: offline tests that
check the operation of the display station independent of its attached control unit, and
online tests that check the 1481 as it interacts with the attached control unit. For
purposes of customer problem determination, some offline tests are presented in this
section. For information about online tests, refer to your controller’s user’s guide.
Offline Tests
The display station temporarily enters Offline Test mode each time it is powered on. The
display station’s own series of Basic Assurance Tests (BATs) are run each time the
display station is powered on. If an error is detected, the alarm sounds and an error
condition may be displayed in row 1, column 1. K is displayed for a keyboard error and
L is displayed for a logic error.
Hold down a key while simultaneously turning on the Power-On/Off switch to enter
Offline Test mode. From Offline Test mode, you can enter Setup mode to set or change
special controls, such as the Numeric Lock and the Serial Number. Offline Test mode is
also used to determine hardware malfunctions by running tests from the System
Manager menu. Special controls that can be set from the System Manager menu are also
presented here.
System Manager Menu
You can test the keyboard, align the screen, and display information about your display
station from the System Manager menu. To display the System Manager menu, enter
Offline Setup mode and display the Offline Test menu (Figure 2-5 on Page 2-7).
To enter Offline Setup mode, hold down any key while you turn the display station on.
The Offline Test menu is displayed (Figure 2-5 on Page 2-7).
To enter setup mode when the display station is online, press and hold down at the same
time the Reset key, the Alt key, and the Test key. The Offline Test menu is displayed
(Figure 2-5 on Page 2-7).