Diagnostic Codes - Stairmaster StepMill SM916 Owner's Manual

Diagnostic Codes

Diagnostic codes are used to test various components of the machine such as the
display, keyboard, serial port, alternator, and tachometer, as well as viewing the
error log information and resetting the time between service or maintenance calls.
1. Press [Level: UP], [6], [ENTER]. The console will display DIAGNOSTICS
2. Press [Level: UP] or [Level: DOWN] to scan through the choices. Select the
option you want to view by pressing [ENTER].
Test display
To test the LCD display, press [ENTER] when the message, DISPLAY TEST is
displayed. The console screen alternates turning on all LCD segments and a
representative program screen. Verify that all LCD segments turn on.
Test keyboard
To test all the keys on the keyboard, press [ENTER] when the message, KEY
TEST is displayed. Then, press any key on the keyboard and that key's name will
be displayed in the text line. Press [CLEAR] as the last key to exit this test.
Test serial port
To test the serial port, press [ENTER] when the message, SERIAL TESTS is
displayed. This test performs a serial loop back test. Select the CSAFE RS-232
selection. You will need a loop-back test cable inserted into the appropriate
connector port to successfully run this test. Console will display either PASS or
FAIL.
Test alternator
To test the machine's alternator, press [ENTER] when the message, ALT TEST
is displayed. This test veri es the alternator eld routines through the console.
Position yourself on the machine and press [Level: UP] for eld on. After
exercising brie y you should build up resistance. For eld o , press [Level:
DWN].
Test tach response
To test the machine's tachometer, press [ENTER] when the message, TACH TEST
is displayed. Start exercising on the machine. The console should regulate the
alternator resistance based on the tach signal to maintain approximately 2,000
RPMs while you are exercising. If not, there is a possible problem in the AC tap
or eld circuit. Check the alternator, the AC tap wire, the eld wire, the diode,
the terminal posts, and the main cable.
Operation
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Owner's Manual