Deck Mechanism Adjustment; Mechanism A Alignment Position Check - Zenith D35 Service Manual

DECK MECHANISM ADJUSTMENT

1.Mechanism Alignment Position Check
Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected.
Test Equipment/ Fixture
• Blank tape
1) Turn the Power S/W on and eject the Cassette by press-
ing the Eject Button.
2) Remove the Top Cover and Plate Assembly Top, visual-
ly check if the Gear Cam Hole is aligned with the
Chassis Hole as below Fig. C-2.
3) IF not, rotate the Shaft of the Loading Motor to either
Clockwise or Counterclockwise until the Alignment is
as below Fig. C-2.
CHECK DIAGRAM
TOP VIEW
Test Conditions (Mechanism
• Eject Mode (with Cassette ejected)
BOTTOM VIEW
L/D Motor Assembly
(A')
(B')
Condition)
4) Remove the Screw which fixes the Deck Mechanism and
Main Frame and confirm if the Gear Cam is aligned with
the Gear Drive as below Fig. C-1(A).
5) Confirm if the Mode S/W on the Main P.C.Board is
aligned as below Fig. C-1(B).
6) Remount the Deck Mechanism on the Main P.C.Board
and check each operation.
Gear Cam
Gear Drive
Gear Cam (o) and Gear Drive (o) groove alignment
Fig. C-1
Gear Cam
(A)
Chassis Hole
Gear Cam Hole
Fig. C-2
4-13
Check Point
• Mechanism and Mode Switch Position
Mode S/W
(B)
(C)
Gear Cam Hole
(B)