1-22 (No.MB053)
4.3.3 Electrical response confirmation
Item Condition Measurement method Ref. value
Adjustment
position
Recording bias
current
• Forward or Reverse
• Test tape
: TYPE ll (AC-514)
• Measurement terminal
: BIAS test point on printed
circuit board
(1) Change BIAS1 and 2, confirm the fre-
quency should be change.
(2) Set the test tape (AC-514 TYPE ll), then
make REC/PAUSE condition.
(3) Confirm the frequency should 100Hz ±
6kHz at BIAS test point on printed circuit
board.
100 kHz ± 6 kHz
Erase current (ref-
erence value)
• Forward or Reverse
• Rec condition
Test tape
: AC-514 TYPE ll
: AC-225 TYPE l
• Measurement terminal
Both side of Erase head
(1) Set the test tape (AC-514 TYPE ll and
AC-225 TYPE l), then make REC/
PAUSE condition.
(2) Release the PAUSE to REC condition,
connect 1W to ERASE head by series,
then confirm the erase current at both
side of erase head.
TYPE ll
: 120 mA
TYPE l
: 75 mA
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