Guidance Needed: Entering Service Menu on Heidelberg SM 52-5P3 (2004) to Calibrate New Encoder

[Ibrahim Abdul-Hakim]

Hi everyone,
I’m writing from Aden, Yemen.
Our shop runs a Heidelberg Speedmaster SM 52-5P3 (2004) with a CP Tronic button-console (non-touchscreen). The original main-motor encoder (SRS50-HZA0-S02) failed and, on a technician’s advice, we installed a compatible replacement (SRS50-HZA0-S21).

To finish the job we have to calibrate the new encoder, but we can’t figure out how to access the CP Tronic Service Menu. Sadly, no certified Heidelberg technicians operate in our area.

Details that might help:

• Two small push-buttons (labeled “HDM” and “S152”) are located inside the cabinet beneath the console.
• Photos of the console are attached for reference.

Could anyone share the key sequence or procedure to reach the Service Menu so we can complete the encoder calibration? Any step-by-step guidance or documentation links would be greatly appreciated.

Thank you in advance!