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Alignments and Adjustments (VCR)
3-2 Adjustments
3-2-1 Preadjustment
1. When parts are replaced, the tape ran sport
system may be changed. When many
different parts are replaced, refer to the
procedures for the tape transport system.
To begin run a T-120 tape and make sure that
excessive tape wrinkle does not occur at each
of the tape guides.
2. If tape wrinkle occurs at the S, T-guide rollers,
turn the S, T-guide rollers until the tape
wrinkle disappears.
3. If tape wrinkle still occurs at the tape guide,
adjust the tilt of A/C head.
4. A/C head adjustment locations
Test Points : JM112-CTL (control waveform)
JM113-H'D SW (head switching sync)
JM114-EnV (envelope waveform)
JM119-A.OUT (audio output)
Test Tape : Color bar (1 KHz)
Lion pattern(7 KHz)
3-2
Fig. 3-3
3-2-2 Adjustments
3-2-2(A) A/C HEAD HEIGHT ADJUSTMENT
1. Run the alignment tape (Color bar) in the
playback mode.
2. Observe surface of the audio head using a
dental mirror.
3. Turn screw (C) clockwise or counterclockwise
until the gap of lower tape edge and the lower
edge of the control head is about 0.25mm
(Refer to Fig. 3-4 and 3-5).
SCREW (A)
TLIT ADJUST
X-POSITION
ADJUSTING SLIT
SCREW (B)
AZIMUTH ADJUST
Fig. 3-4 Location of A/C Head Adjustment Screw
AUDIO HEAD
VIDEO HEAD
CONTROL HEAD
Fig. 3-5 A/C Head Height Adjustment
SCREW (C)
HEIGHT ADJUST
SCREW (D)
X-POSITION
LOCKING
0 ~ 0 .25 mm
Samsung Electronics
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