6.9 Head Position Adjustment
Whenever replacing a head, the following head position adjustments are necessary. If the
tape does not contact the heads properly, perform the following adjustments.
NOTE: If the tape does not contact the heads properly due to improper alignment, any one
of the following problems may occur.
• Reproduce Head Wrong Position: High Frequency Level Decreasing, Level Fluctuation
• Record Head Wrong Position: High Frequency Level Decreasing, Level Fluctuation
• Erase Head Wrong Position: Deterioration of the Erase Ability
■ Height /Zenith Adjustment
Perform the following adjustment after raising the head cover.
1. Thread the machine with a tape that can be disposed of after use.
2. Adjust the head height and zenith visually by turning the screws marked “T”
and “H” in Figure 6-9 to move the tape to the middle of the head.
3. After the adjustment, mark the head surface with Head Marker Ink or a
Marker Pen.
4. Play the tape for about ten seconds.
5. Inspect the face of each head where the passage of the tape has worn
away the ink. If the wear pattern does not match that shown in Figure 6-10,
readjust the screws “T” and “H.”
6. After reapplying the ink, play the tape as in step 4, and again inspect the face
of each head. Repeat this process until the wear pattern is correct.
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