Mechanism Assembly Mode Check - LG RCT689H Service Manual

DECK MECHANISM ADJUSTMENT

1. Mechanism Assembly Mode Check

Purpose of adjustment : To make tools normally operate by positioning tools accurately.
Fixtures and tools used
• Blank Tape (empty tape)
1) Turn the VCR on and take the tape out by pressing the
eject button.
2) Separate both top cover and plate top, and check both
the hole (A) of gear cam and the hole (A') of chassis
correspond (Fig. C-2).
3) If it is done as in the paragraph 2): Turn the gear cam
as in No.2) after dismantling the motor assembly L/D.
CHECK DIAGRAM
BOTTOM VIEW
VCR (VCP) status
• Eject Mode
(with cassette withdrawn)
4) Undo the screw fixing the deck and the main frame, and
5) Check the mode S/W on the main P.C. board locates at
6) Connect the deck to the main P.C. board and perform
Fig. C-1
(A')
TOP VIEW
Fig. C-2
4-14
Checking Position
• Mechanism and Mode Switch
separate the deck assembly. Check both the hole (A) of
gear cam and the hole (A') of chassis correspond
(Fig. C-1).
a proper position as in (B) of the Fig. (C-1).
all types of test.
Gear Cam
(B)
(C)
Gear Drive
Correspondence of the gear cam hole (O)
and the gear drive hole (O)
Motor Assembly L/D
Gear Cam
Chassis Hole
Gear Cam Hole
Mode S/W
(A)