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3 Mechanism Operation Description
3.1.
General Feature
· This is a five disc changer mechanism for CD/DVD. The outline figure is shown below.
· The mechanism has "CHANGE WHILE PLAY" function. It open other trays for disc exchanging while one tray is at PLAY
position performing recording or reproducing.
· The mechanism can quickly change all trays with "CHANGE ALL" function. All trays can be move to OPEN position with one
operation.
· There is no sensor to indicate presence of disc on any tray.
3.2.
Hardware composition
· Below is the hardware components of the mechanism
Name
Open Switch (OPEN-SW)
Home Switch (HOME-SW)
Close Sensor (CLOSE-SENSOR)
Play Switch (PLAY-SW)
Stocking Switch (STOCK-SW)
UD Sensor (UD-SENSOR)
Top Switch (TOP-SW)
Driver IC
Motor
Plunger
3.3.
Mechanism Operation
· This mechanism has the following state:
1. Driving of a tray to open/close
2. Up/down operation of a traverse performs a state changes of tray.
By using the plunger to lift/release of a switching gear, and the cam gear to lift/release the function gear the motor can be link
to several gear trains to perform various operations.
· The functions that can be perform in this mechanism are described as below:
Condition
Open current playing tray
Open All
Stock
Play
The switch is used to detect normal tray opening
The switch is used for detect tray being manually push/trigger when full open
Is used to detect cam gear home position
Used for normal single tray closing
Used to detect cam gear rotate to Play Driving position
Detect TRV clamping complete position
Detect tray completely transfer for play position to stocking positi
Detect TRV vertical movement position
Detect a default position of TRV vertical movement position
To drive Motor
Main driving source for changer
Switching the driving source from motor to:
1. Tray open/close
2. Drive tray to play/stock position and TRV vertical movemen
The state to change current playing disc. All tray will be open at once and current tray at PLAY position
will be expose.
The state where all trays being driven to OPEN position. The disc can be taken in or out from tray to tray
by close tray one by one from top to bottom.
The state where the trays are stored in STOCK position
The state where one of the tray 5 trays is being driven to PLAY position and clamped by traverse unit
Function
Explanation
9
CRS1
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