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TC Electronic A/S
M5000 Service manual
page 4
Symptom
Comments / Action:
Distortion
If SAMPLE RATE is set to DI, when using analog input, distortion will appear. Set SAMPLE RATE to 44.1 or 48 or connect an
external device to digital input.
If SAMPLE RATE is set to 44.1kHz and the digital input signal is 48kHz (or vice versa), distortion will appear. The M5000/X cannot
do real sample rate conversion!
The message “BIOS LOADED” appears constantly or
randomly.
Clean the connector CN2 at the power supply board or even better, solder the power supply wires directly into the board. Please refer
to service note no. 712 10 05 11. or 712 10 05 15 in appendix
The message “SERIAL INFORMATION MISMATCH”
appears at power on.
The RAM has lost data. Press as noted DO and write down the 16 character code and the M5000/X frame serial no. and contact TC
Electronic. In a tight situation you can press UNDO instead of DO to run the standard software (BIOS higher than 1.08). Installed
option codes are deleted t and must be re-entered .
Blank display or random characters in the display.
Cannot run application software.
Enter the SETUP UTILITY MENU, by keeping BYPASS button pressed at power on.
Reload the application software and press UNDO when the question “KEEP PREVIOUS SETTINGS” appears.
Cannot connect to ATAC.
Locked during startup sequence
Are the DIP switches at the ATAC set correctly? See the ATAC manual.
Is the power up sequence correct? Powering up the ATAC and M5000/X at the same time may cause problems.
Here is the correct power up sequence:
1. Connect ATAC to the M5000/X or to the MULTAC.
2. If MULTAC is used connect this to M5000, otherwise goto step 3
3. Turn on M5000/X. Wait 5 seconds.
4. Turn on the ATAC.
Check M5000/X internal fuse. The fuse F1 is located inside the M5000/X, at the CPU board close to the Remote connector. Fuse size:
T 630mA.
The M5000/X software must be version 1.14 or higher.
The M5000 BIOS version must be 2.00 or higher. The M5000X BIOS version must be 3.00 or higher.
Lines or spots in display
Backlight is blinking
Make sure the environment has no influence to the display, i.e. magnetic fields, hot air, or try to adjust the VIEWING ANGLE
knob. If the picture is still distorted, replace the display.
If the backlight is bad or blinking; check the soldering on the display itself.
.... continued at next page.
Bad LED's, keys or Dial knobs.
See section "Built-in Test program for front board".
Analog in/out fails
Try with other cables or another ADA module. Note: When analog in/out is connected to unbalanced equipment, XLR pin 3 must
be connected to pin 1.
Digital in/out fails
Try with other cables or another DSP module.
Midi in/out fails
Try with other cables or read section "Built-in Test program for CPU board".
No DSP modules are detected in the Built-in Test Program
The “Detect Cards” function in BIOS version 3.00 or lower can only detect old DSP-modules. It is not able to detect DSP-modules
