Panasonic AJ-HDC27VP, Service Manual

Page: 582 / 741

MECH-15
4-14. A/C Head Tilt Adjustment
SPEC
Curl does not appear on tape edge.
Lower limit at T3 post
ADJ.
SCREW A, G (A/C Head)
MODE
PLAY
TAPE
Blank tape (For the long time play models,
long time recorded tape should be used)
TOOL
VFK1148, VFK1178 (Hex Driver)
1. Play back the tape and adjust the screw (A) for
adjustment of A/C Head tilt so that the tape path
has lower limit without curl at T3 post.
2. For adjustment, loosen the screw (G) and make
curl on tape at lower flange of T3 post by
loosening screw (A). And tighten the screw (A)
accordingly to find the point of curl disappeared.
After finish adjustment for screw (A), tighten the
screw (G) with 10cN-m (1.0Kg/cm) of torque.
NOTE :
1. In case of turn clockwise the screw (A).
®
Tape goes up at T3 post.
In case of turn counter-clockwise the screw
(A).
®
Tape goes down at T3 post.
2. When the screw (A) adjustment is finished,
screw adjustment should be finished in
tightening direction. And confirm that the
screw (A) isn’t loose.
3. Adjustment and confirmation should be
performed alternately for each A/C head
adjustment (Azimuth and Height).
Figure 4-14
4-15. A/C Head Height Adjustment
SPEC
C1, C2
³
1.6V
TEST
POINT
CUE AUDIO: TP4
CTL: TP901
ADJ.
SCREW B, H (A/C Head)
MODE
PLAY
TAPE
VFM3580KM or VFM3580KL
(14 to 22min)
TOOL
VFK1150 (Nut Driver)
VFK1190 (Hex Wrench)
1. Press and Lift up A/C Head lightly as indicated in
following figure, then confirm that the CTL and CUE
output level is within the specification.
2. If it is out of spec., loosen the screw H and adjust
the screw B until Cue output is maximized.
3. Confirmation of the level have to be done after the
screw (H) is tighten completely. (refer to A/C Head
Adjustment Method)
4. A/C head height adjustment should be done with
Azimuth and X Value adjustment alternately.
Figure 4-15-1
Figure 4-15-2