Service manual

Revision D 4-12
Troubleshooting : Power PCB Theory
Series 2000 Treadmill
409110-004
Precautions
The Board must be powered before signals are applied to it.
The circuitry is static sensitive as are all HC, AC, and MOS ICs.
Therefore, when removing or installing boards, the power should be off.
The circuit board should not be supplied with a VCC over 5.5 volts on
the +5V supply. The power sections should not be supplied with
voltages over 265VAC.
Initial Board Conditions
Apply power supply conditions as stated in Table 4-1, “Output
Requirements.”