Panasonic OmniVision PV-M1347, Service Manual

Page: 40 / 143

2-22
P2 AND P3 POST HEIGHT ADJUSTMENT
(PRELIMINARY ADJUSTMENT)
Purpose:
To properly align the position of the tape with the Cylinder
Lead so that the tape runs with stability.
Symptom of Misadjustment:
1) Since the Envelope Waveform Signal cannot be tracked
properly, the Playback picture will be poor.
2) Since the tape does not run smoothly, the tape will
eventually be damaged.
3) Tape interchangeability is poor.
Equipment Required:
Post Adjustment Plate .............................. (VFKS0010)
Reel Table Height Fixture ......................... (VFKS0009)
Post Adjustment Driver ................................ (VFK0329)
1. Remove the Cassette Up Ass'y.
2. Position the Post Adjustment Plate over the reels.
3. Place the fixture on the Post Adjustment Plate and zero the
fixture (DO NOT use the cut-out portion of the post
adjustment plate.)
Fig. M6-1
4. Lower each post below the top edge of the Post Adjustment
Plate. Then, raise each post until it contacts the foot of the
Reel Table Height Fixture. For proper adjustment, the foot
of that should be positioned as shown.
Fig. M6-2
Post Side View Back View
Foot
NO GOOD GOOD
(a)
(b)
(Post Adjustment Plate)
VFKS0010
VFKS0009
(Fixture)
First Lower
Then Raise Post
Upper Edge of
Lower Tape Guide
Foot
VFKS0010
P2
P3
Fig. M6-3
CAUTION:
1) Overtightening P2 and P3 posts may cause the threads
to strip.
2) Upon completion of this procedure, perform the "Envelope
Output Adjustment/Confirmation Procedures."