Not what I meant: when the service manual says to put all the sound settings at normal, almost all of the pots have to be put at Min (0 on the panel). On the other hand, the EG Intensity, while at 0 on the panel, is actually not at Min position, but in mid-position.
It is easy to mistake that 0 by turning it fully anti-clockwise, which I was doing, thereby making an improper calibration.
So, when doing the calibration procedure, one must ensure that EG intensity is actually in the mid-position (and at 0) and not at Min position on the panel.
Yash