T-M50 / T-M50 ASME Service Manual
Ver. 1.05
54
CONFIDENTIAL
12-3. The error-code button: Verifying functionality of computer board,
Displaying error code history, and Clearing error code history memory
The T-M50 has the “Error-call button” on the central
computer board that provides three main functions listed
below. The button is located next to the 7-seg LED (as
shown in the picture to the right).
A. Check if the computer board works properly
1.
Turn on the ON/OFF button of remote controller.
2.
If the computer board works properly, the 7-seg LED will light in a circular “0” pattern, one
segment at a time.
B. Displaying error code history
1.
Briefly press the “Error-call button” (do not hold down the button).
2.
If the T-M50 has had prior error codes, the 7-seg
LED will display the most recent error code first.
Pressing the button again will display the 2
nd
most recent error code and so on (Computer
saves a maximum of 12 error codes). If the
T-M50 has never had any error codes, the 7-seg
LED will display a bar “—“.
C. Clearing error code history memory
1.
Press and hold the “Error-call button” for at least
5 seconds.
2.
The 7-seg LED will display “C”, “L” and “r” in
succession to signify that the computer board
memory has been erased of all error codes.
Error-call button
7-seg LED
