Precor Error Code 74, 75, 76, 77 Flat Belt Count, Mismatched console

Feb 09, 2022

Applies to

Error "ERR" codes: AMT12 series

Warning "WRN" codes: SCL800 series

Overview

Error codes 70 thru 79 overview, see 70-79 Overview.

Issues symptoms

The UPCA and LPCA compare the stride count record written on each EEPROM.

• Error 74: The LPCA stride count is less than the UPCA’s, and the UPCA is less than 30,000 strides.
• Error 75: The LPCA stride count is less than the UPCA’s, and the LPCA is less than 30,000 strides.
• Error 76: The LPCA stride count is greater than the UPCA’s, and the UPCA is greater than 30,000 strides.
• Error 77: The UPCA stride count is greater than the LPCA’s, and the LPCA is greater than 30,000 strides.

The events will be recorded to the error log during the workout summary and the LPCA stride count record is written to the UPCA EEPROM.

The most likely cause of these errors is the UPCA or LPCA were replaced during troubleshooting using a board from an adjoining unit. See Note below.

Troubleshooting steps

In general, no action is needed. These are recorded for informational purposes.

Troubleshooting note:

If you are swapping an upper or lower PCA while troubleshooting, note the process below to prevent the stride count odometer from being prematurely overwritten.

• When you stop pedaling, the AMT will pause for 20 seconds, and then give a 10-second workout summary (which is when the records are written between the PCAs). After a PCA is replaced and the AMT is tested, you need to unplug the data cable from either PCA within the 20-second pause period to prevent the summary from happening. If the AMT is prevented from going into the summary, the stride count will not be overwritten.
• When testing is complete, make sure that each PCA board is replaced in the original unit from which it was removed. The only exception is if you find a bad board that needs replacing.
• All these functions will place a code in the error log. Clear them before returning the unit to use.