Top View(Without Tray Disc); Deck Mechanism Adjustment - Zenith XBS341 Series 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
BOTTOM VIEW
TOP VIEW
Test Conditions (Mechanism
Condition)
Eject Mode (with Cassette ejected)
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 (o) and Gear Drive (o) groove alignment
Fig. C-1
L/D Motor Assembly
Gear Cam
(A')
(B')
Chassis Hole
Fig. C-2
- 4-13 -
Check Point
Mechanism and Mode Switch Position
Gear Cam
(B)
(A)
Gear Drive
(A)
Gear Cam Hole Gear Drive Hole
Mode S/W
(B)