(No.22066)1-35
4.4
Mechanism section
Item
Condition
Measurement method
Ref. value
Adjustment
position
Head azimuth
Test tape
:VT703L (8kHz)
Output terminal
:Speaker out
(1) Playback the test tape VT703L (8kHz).
(2) Adjust to maximum output level by azimuth ad-
justment screw for forward side and reverse
side.
(3) This adjustment is adjust by adjustment screw
of forward side and adjustment screw of re-
verse side.
Maximum output Only adjust at
changed head
Tape speed
Test tap
:VT712 (3kHz)
Output terminal
:Speaker out or
Headphone out
Playback the test tape VT712 (3kHz) at end of
forward side,adjust to 2,940~3,90Hz indication of
frequency counter by VR37.
2,940 ~ 3,090Hz VR37
Item
Condition
Measurement method
Ref. value
Adjustment
position
Tape speed
diviation at
FWD/REV
Test tape
: VT712 (3kHz)
Output terminal
:Speaker out or
Headphone out
Playback the test tape VT712 (3kHz) at end of
forward and reverse, tape speed deviation should be
less than 6.0Hz.
Leass than
6.0Hz
VR31
Wow & Flutter
Test tape
: VT712 (3kHz)
Output terminal
:Speaker out or
Headphone out
Playback the test tape VT712 (3kHz) at start of
forward and reverse, Wow & Flutter are should be
less than 0.25%(WRMS).
Less than 0.25%
(WRMS)