Panasonic Crs 1 Service Manual

 
    · 
    To drive the tray(s) between STOCK/PLAY position, cam gear must be at the play driving position and plunger need to be
activated, the switch and state change is as figure below:
 
    · 
    The mechanism tray openin g and closing is cycle process. It is able to open all trays in STOCK position while one of the tray
is in PLAY position. The closing can be done one by one or close all at once depend on the user instruction. Below show the
tray openin g and closing flow.
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3.4. Switches Chattering Check
 
    · 
    Each input shall perform chattering check processing.
OPEN-SW2ms Periodic sampling. It logic-decides by continuation same 5 times.
PLAY-SW2ms Periodic sampling. It logic-decides by continuation same 5 times.
STOCK-SW2ms Periodic sampling. It logic-decides by continuation same 5 times.
TOP-SW2ms Periodic sampling. It logic-decides by continuation same 5 times.
HOME-SW2ms Periodic sampling. It logic-decides by continuation same 5 times.
UD-SENSOR2ms Periodic...

 
    · 
    The basic concept of the motor rotation sequence (CW orCCW) isbase on the initial and final motor rotating direction. The
direction should be opposi te to the initial and final motor driving direction in order to:
 1. To release the gear teeth side force
 2. To release mechanism belt tension
 3. To ensure switching gear disengage or engage into other gear´s teeth
 
    · 
    Summary of thetype ofmotor short rotation direction is as below:
Motor DirectionInitialShort Rotate...

 
    · 
    As the plunger only activate at 2 position of cam gear. The plunger modesummary as below:
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Switching
PositionInitial Motor DirectionSwitching
ModeInitial Motor DirectionFunction
Home
PositionCam gear rotate CCW to HOME
Motor :CCWCUD base move from bottom to top
Motor :CWTrayselection from bottom
to top
Cam gear rotate CCW to HOME
Motor :CCWDUD base move from top to bottom
Motor :CCWTray selection from top to
bottom
UD base move from bottom to top
Motor :CWECam gear rotate CW from HOME to
Play Driving Position. Motor :CWAfter tray selection, cam
gear rotate to Play Driving
Position
UD base move...

3.8. Mechanism HOME position
 
    · 
    Mechani sm HOME position is a starting position for few functions, such as below:
 1. Load trayfrom STOCK position toPLAY position
 2. Unload trayfromPLAY position to STOCK position
 3. Open trays
 4. Driving UD base up/down
 
    · 
    Besides this, it will always return to “HOME” position after performing below functions:
 1. After tray completely clamped by Traverse unit
 2. Closing All trays
 3. Closing tray 5
 4. After completely the UD basemovement
 
    ·...

GO HOME MODE 1GO HOME MODE 2
1. After loadingtray to PLAYposition1. After closing all trays (notray at PLAYposition)
2. After unloadingtray to STOCKposition
3. After closing all trays (onetray at PLAYposition)
 
    · 
    The timing chart for the mechanism to set to “HOME” position is illustrated as below.
 
    · 
    Below is the flow chart for the mechanism to set to “HOME” position.
3.9. Mechanism Play Driving position
 
    · 
    Play driving position is a position driving source linkage to drive...

 
    · 
    Below is the flow chart for the mechanism to set PLAY DRIVING position.
3.10. Trays Operation
3.10.1. Tray ‘Open’ Operation
 
    · 
    Changer mechanisms are required to open trays to load a disc. This mechanism features an All Open or Chang e all one by
one function for quick & easy disc change. There are 3 kinds of Tray Open conditions.
 1. All trays open
Occurs when OPEN/CLOSE button is pressed, playing tray will be driven to STOCK position and all trays will driven to
OPEN position....

 
    · 
    The timing chart for both positions is the same, motor rotate CW direction, until OPEN SW changing signal H→L→H, motor
need to continue run for 45ms.
 
    · 
    Motor free at the end of tray open, this is for enable the tray to be manua lly pushin g by user.
 
    · 
    Below is the timing chart for tray openin g.
 
    · 
    For all type of trays openin g, either 4 trays (open remaining) or 5 trays (all open) will be set to OPEN position.
3.10.2. Tray Closing Operation
 
    · 
    The...

 
    · 
    Table below explain the function of open selected tray while one tray at PLAY position. This table indicated the possible tray
at playing trays. For opened tray, all trays will be open except the tray at PLAY position. Trays will close to expose the selected
tray for user to input or change the disc.
 
    · 
    Timing chart below, shown an example of user select to open tray 4 only.
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