Panasonic DVCPRO HD AJ-HDC27VP Service Manual page 79

4-19.REV Tape Path Confirmation
and Adjustment
(T4 Post Height Adjustment)
•. C1, C2 ³ Cp1, Cp2´0.75
SPEC
NOTE:
C1, C2: CTL output REV (-1) mode
Cp1, Cp2: CTL output PLAY (+1) mode.
‚. Lower limit at T3 post on REV mode.
ƒ. Curl does not appear on tape at T3 and T4
post.
TEST
CTL: TP901
POINT
ADJ.
T4 post height
MODE
PLAY, REV-1X (SHTL)
TAPE VFM3580KM or VFM3580KL
TOOL
VFK1150 (Nut Driver)
1. Place unit into REV X1 mode and confirm the CTL
output level becomes more than 75% at play mode.
Confirm the tape path limit becomes lower limit at
T3 post and the tape does not have curl at T3 and
T4 post.
2. If it is out of specification, adjust T4 post by
following procedure.
3. Turn the Nut of
counterclockwise by the tape limit condition at T3
post. The maximum rotation angle should be 45
degree.
4. However if still it is out of specification, adjust T4
post height by following the item "4-1. Post Height
Pre-adjustment procedure".
[T4 Nut Adjustment Direction]
Direction CTL Level
Tighten Increase
Loosen Decrease
[Post limit]
Post A
T3 NG NG
T4 OK OK
T4 post clockwise
Condition of lower
limit on T3 Post
Tape touch to strong
Tape touch to weak
B C D E
OK NG NG
OK NG NG
A: UPPER
D: CURL
or
F
NG
NG
MECH-18
B: FREE C: LOWER
E: BEND F: DROP
Figure 4-19-1
Figure 4-19-2