Here are the steps I take to calibrate the audio path on a four track cassette recorder. i'm using a Tascam 244 but steps are roughly the same for any such machine...if its got digital meters it may not be possible to do that step, the variable resistors you'll find on the printed circuit boards should be labelled ot give oyu a clue of what does what, even if you don't have the service manual or schematics for the unit you are maintaining.
I calibrate in this order;-
Meters
playback levels
tape speed
record levels
Listen for wow flutter and other pitch issues which might point to a worn-out motor
So you can easily scrub to the different bits theres a label in the top left of the screen.
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Негізгі бет 4 track calibration demonstrated on a Tascam 244 Portastudio
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