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3-5 Tape Transport System Adjustment
When parts are replaced, perform the required
adjustments by referring to procedures for the
tape transport system. If there are any changes to
the tape path, first run a T-120 tape and make
sure excessive tape wrinkle does not occur at the
tape guides.
1) If tape wrinkle is observed at the guide roller
S, T, turn the guide roller S, T until wrinkle dis-
appears.
2) If the tape wrinkle is still observed at the tape
guide, perform the tilt adjustment of the ACE
head.
(See "2. Alignment and Adjustment" of the
Service Manual for Test Point Locations.)
3-5-1 ACE Head Assembly Adjustment
3-5-1(a) ACE HEAD HEIGHT ADJUSTMENT
1) Run the alignment tape (Color bar) in the play-
back mode.
2) Observe surface of the audio head using a den-
tal 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. 3-5-1 and 3-5-2)
SCREW (A)
TLIT ADJUST
X-POSITION
ADJUSTING SLIT
SCREW (B)
AZIMUTH ADJUST
Fig. 3-5-1 Location of ACE Head Adjustment Screw
AUDIO HEAD
VIDEO HEAD
CONTROL HEAD
Fig. 3-5-2 ACE Head Height Adjustment
Samsung Electronics
SCREW (C)
HEIGHT ADJUST
SCREW (D)
X-POSITION LOCKING
0 ~ 0 .25 mm
3-5-1(b) ACE HEAD TILT ADJUSTMENT
1) Playback a blank tape and observe the position
of the tape at the lower flange of tape guide.
2) Confirm that there is no curl or wrinkle at the
lower flange of tape guide as shown in
Fig. 3-5-3 (B).
3) If a curl or wrinkle of the tape occurs, slightly
turn the screw (A) tilt adjust on the ACE head
ass'y.
4) Reconfirm the ACE head height.
(A)
WRINKLE
(BAD)
Fig. 3-5-3 Tape Guide Check
3-5-1(c) AUDIO AZIMUTH ADJUSTMENT
1) Load alignment tape (Mono scope) and play-
back the NTSC : 7KHz (PAL : 6KHz) signal.
2) Connect channel-1 scope probe to audio
output. (Monitor Output)
3) Adjust screw (B) to achieve maximum audio
level. (See Fig. 3-5-1)
4-5-1(d) ACE HEAD POSITION (X-POINT)
ADJUSTMENT
1) See = (Alignment and Adjustment) for ACE
Head position (X-Point) adjustment.
Disassembly and Reassembly
(B)
(GOOD)
3-21
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