
P
AGE
52
tSt4
tSt5
tSt6
tSt7
tSt8
tSt1
tESt
tSt9
tStA
ON
OFF
Actual Display
On/Off Display -
Use arrow keys
to turn on or off
Scroll Key
Numeric Display -
Use arrow keys
to change value
Up Arrow Key
Down Arrow
Key
Test Mode Procedures 5.3
To enter the Test mode, press and release the SCROLL key until tESt appears on the
display, then press the DOWN key. tSt1 will be displayed, press and release the SCROLL
key to advance the display to the desired test. Test 1, 2 and 3 are performed as a unit so the
display will advance directly to tSt4 from tSt1. Listed below in Table 5-2 are the test proce-
dures available. Test 1, 2 and 3 are performed on start up, periodically during operation, and
on entry into the Test mode. Test 4 is executed on entry into and periodically during the
Operation mode. These tests can be used as a trouble shooting aid.
TEST MODE FLOW CHART