Fostex G24S Service Manual page 22

5) Turn the FRONT/REAR SW to FRONT. Then, rotate and fix the PITCH CON. KNOB
at the center position.
6) Adjust RI 01 on the CONTROLLER PCB (there is a hole provided on the back side of the
Controller to rotate the pot) so that the PITCH value shows " 0.0 " .
4.3 Record / Reproduce Amplifier Checks and Adjustments
Reproduce Alignment Tape : RL41J326 G24S
Fostex 9200 G16S
Blank Tape : We would like to suggest that you use
A PEX 456 1 inch tape for G24S and A PEX 456 Vz inch tape for G16S.
4.3.1 Checking and Adjusting of Head
1) Connect a level meter and an oscilloscope to OUTPUT jack 1 and 24 (G24S) or OUTPUT
jack 1 and 16 (G16S) for observing a lissajous waveform.
2) Tangency adjustment
If the head gap does not face the tape correctly as shown in the drawing below, a correct
recording and/or playback level cannot be obtained.