....1. Test tape transport....................................................................1. Azimuth, zenith, height

....2. Copy solenoid adjustment......................................................2. Bias oscillator frequency

....3. Rewind solenoid adjustment..................................................3. Playback pre-amp bias trap

....4. Lubricate capstans, check end play.....................................4. Playback pre-amp level, and eq

....5. Brake release timing..................................................................5. Record bias trap

....6. Clutches, end play, type wear.................................................6. Record bias level

....7. Spindle torque, end play, tyre wear.......................................7. Meter calibration

....8. Pressure roller tension.............................................................8. Record audio level

....9. Check head wiring for dry joints9. Audio quality