46
ELECTRONIC TROUBLESHOOTING SUMMARY
1. LED
Operation on
PCBAs
What this means First Action Second Action Third Action Fourth Action
Note about use of Status LEDs: A single LED does not show the complete picture of an error condition. Review the status of all LEDs prior to deciding which assemblies
to replace.
P51 Processor PCBA:
DS1 Flashing @ 1
Second Rate
Normal Condition. Normal condition, no action required.
DS1 Flashing @
Irregular Rate
P51 Processor PCBA Non-
operational.
Power off/on treadmill, see if problem self-
clears. Check for unplugged or damaged
cables. Communication cable from J10 on
P51 Processor PCBA is cable most likely to
cause problem.
Replace P51
Processor PCBA.
DS1 Off Processor is non-operational.
No power or P51 Processor
PCBA has failed.
Power off/on treadmill, see if problem self-
clears. Check for unplugged or damaged
cables. Communication cable from J10 on
P51 Processor PCBA is cable most likely to
cause problem.
Check LEDs on VSD
to see if VSD has
power.
Replace P51
Processor PCBA.
DS1 On Continuous P51 Processor PCBA Non-
operational.
Power off/on treadmill, see if problem self-
clears.
Replace P51
Processor PCBA.
VSD PCBA:
DS1 Flashing @ Any
Rate
VSD PCBA is Non-operational. Power off/on treadmill, see if problem self-
clears. Check for unplugged or damaged
cables. Communication cable from J10 on
P51 Processor PCBA is cable most likely to
cause problem.
Replace VSD
PCBA.
DS1 Off Walkbelt motor is OFF. Normal condition, no action required.
DS1 On Continuous Walkbelt motor is ON. Normal condition, no action required.
DS2 Flashing @ 1
Second Rate
Normal condition. Normal condition, no action required.
DS2 Flashing @
Irregular Rate
Processor in reset is
attempting to re-establish
communication.
Power off/on treadmill, see if problem self-
clears. Check for unplugged or damaged
cables. Communication cable from J10 on
P51 Processor PCBA is cable most likely to
cause problem.
Replace VSD
PCBA.
Replace
Configuration
Plate.
DS2 Off Processor in reset or no
communication.
Power off/on treadmill, see if problem self-
clears. Check for unplugged or damaged
cables. Communication cable from J10 on
P51 Processor PCBA is cable most likely to
cause problem.
Replace VSD
PCBA.
Replace P51
Processor PCBA.
Replace Configuration
Plate.
