1. Enter the general diagnosis mode, and press and hold the (1) and (5) keys down until "SWITCH SCAN" appears on the upper display (the (1) key increments a

test item and the (5) key decrements a test item).

2. Table 4-1 lists SCAN numbers. Hold the (2) and (6) keys down until the SCAN number for a unit to be tested shows up on the upper display (the (2) key

increments a test item and the (6) key decrements a test item).

3. In response to the press of the (3) key, the test starts, the SWITCH SCAN number begins blinking, then the corresponding unit number (any of 1 to 4) and the

current status are displayed.

Operate the units (Figure 4-1). Their respective liquid crystal displays are provided (Displays vary by sensor. See Table 4-1 for details).

4. When the (7) key is touched, the SWITCH SCAN number goes back to an indication view (stops blinking).

5. Repeat steps 2 through 4 as required.

6. To end the test, press the (4) key (the display is restored to the view of step 1).

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