Deck Mechanism Adjustment; Mechanism Alignment Position Check - LG LGXBR342 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 Top Plate Assembly, visual-
ly check if the Cam Gear Hole is aligned with the
Chassis Hole as below Fig. C-2.
3) If not, rotate the Shaft of the Loading Motor Clockwise or
Counterclockwise until the Alignment is as shown below
in 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 attaches the Deck Mechanism
and Main Frame, confirm the Cam Gear is aligned with
the Drive Gear as shown below in Fig. C-1 (A).
5) Confirm if the Mode S/W on the Main P.C. Board is
aligned as shown below in Fig. C-1 (B).
6) Remount the Deck Mechanism on the Main P.C. Board
and check each operation.
Drive Gear
Gear Cam (o) and Gear Drive (o) groove alignment
Fig. C-1
Cam Gear
Chassis Hole
Cam Gear Hole
Fig. C-2
4-13
Check Point
• Mechanism and Mode Switch Position
Mode S/W
Cam Gear
(B)
(C)
(A)
Cam Gear Hole
(B)