Toshiba Satellite M45, Service Manual

Page: 31 / 94

3-2-2. Tape Transport System Adjustment
1) Pm-adjustment
When parts are replaced, perform the required adjustments
by referring to the procedures for the tape transport
system. When parts are replaced, the tape path may be
changed.
First run a T-l 60 tape and be sure excessive tape wrinkle
does not occur at any tape
1. If tape wrinkles at the T-guide rollers, turn
the S,T-guide rollers until the wrinkle
2. If tape still wrinkles at the tape
do the tilt adjustment of the A/C head.
2) Adjustment procedures
1. A/C head assembly adjustment
Test TP302 (Envelope)
TP804 Out)
TP202 SW Pulse
TP201 (Control Pulse)
Test Tape :
(Blank Tape (T-160)
Fig.
3
Location of Test Point (Main
a. A/C head height adjustment
1. Run the alignment tape the playback
mode.
2. Observe the surface of the audio head using a
dental mirror.
3. Turn screws(A), (B), (C) clockwise or
counterclockwise until the gap of the lower tape
edge and the lower edge of the control head is
about 0.25 mm. (Refer to
4. and 5.)
SCREW(C)
TILT
X POSITION
ADJUST GEAR(E).
HOLE (F)
SCREW(D)
X POSITION LOCKING
SCREW (A)
HEIGHT ADJUST
4 of A/C Head Adjustment Screw
AUDIO HEAD
VIDEO TAPE
0
CONTROL HEAD
5 Head Adjustment
b. A/C head tilt adjustment
1. Playback a T-160 tape and observe the of
the tape at the lower flange of the tape
2. Confirm that there
IS
no curl or at the lower
flange of the tape guide, as shown Fig. 6
3. If a curls or wrinkle of the tape has
the screw (C) tilt adjust on the head clockwise
until disappears, as shown in 6
4. Reconfirm the A/C head height.
Fig.
6
Tape Guide Check
3-4