Panasonic OmniVision PV-M1326, Service Manual, Page: 15 / 173

2-10
Upper
Cylinder
D.D.
Cylinder
Hole
Indentation
REPLACEMENT OF CYLINDER UNIT
Work with extreme care when removing or replacing the
Cylinder Unit. Do not touch Video Heads during servicing.
1. Remove the VCR Chassis Unit.
2. Remove the VCR Main C.B.A.
3. Place the Mechanism Chassis and Cassette Up Ass'y
upside down.
4. Remove Black Screw (A) and Earth Plate Unit.
5. Remove 3 Screws (B).
6. Place the Mechanism Chassis and Cassette Up Ass'y in a
normal position.
7. Remove 2 Screws (C) and then lift the Cylinder Unit and
Head Amp Ass'y slowly from top side.
Note :
Since there is very little clearance between the
Cylinder Unit and the chassis, remove the Cylinder Unit
gently and carefully.
8. Unsolder P3502 and P3503 on the Head Amp Ass'y and
then remove the Head Amp Ass'y from the Cylinder Unit.
9. Place the Mechanism Chassis and the Cassette Up Ass'y
upside down.
Fig. M5-1
10. Reinstall the Cylinder Unit on to the chassis by reversing
the procedure previously described.
3. REPLACEMENT OF UPPER CYLINDER
UNIT
1. Install the Upper Cylinder Unit carefully so that the hole in
the Upper Cylinder Unit is properly matched to align the hole
on the Upper Cylinder to the center of the indentation on the
D.D. Cylinder. For details on the installation position, refer
to Fig. M4.
Fig. M4
2. Tighten 2 Screws with Washers (A) shown in Fig. M4.
3. Clean the Upper Cylinder with a deerskin swab (Head
Cleaning Stick) saturated with Ethanol.
Note :
Upon completion of replacement, perform “TAPE
INTERCHANGEABILITY ADJUSTMENT,” Page 2-14,
especially “HORIZONTAL POSITION ADJUSTMENT
OF A/C HEAD,” Page 2-16.
View "A"
Unsolder
P3502 P3503
Screws (B)
Earth Plate Unit
Screws (C)
Black Screw (A)
"A"
Bottom View
Head Amp
Ass'y