Panasonic Crs 1 Service Manual

 
    · 
    The Chang e operation is to close one tray each time when CHANGE is pressed. This is the basic operation of auto tray
close. The change operation will stop after detect a signal change in CLOSE-SENSO R while auto tray close count the
numbe r of CLOSE-SENSOR signal change and stop at before selected tray start to move to STOCK position.
If there is a case where user select a upper level tray of current tray in PLAY position to be closed, (e.g. current tray at PLAY
position is tray 4, user...

 
    · 
    Below is the flow chart for tray open processing.
 
    · 
    The flow charts below shown the types of tray close processing, for tray auto close processing is use if user select a specify
tray to be close automatically after trays full open.
 
    · 
    Tray change close processing use if use select a function and want to change disc one by one from toptray to bottom tray.
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    · 
    Close all processing is use when user wants to close all trays at once, or want to close tray no.5 or close tray no.4 while tray
no. 5 is at PLAY position.
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    · 
    W hen there is a OPEN/CLOSE button pressed during tray open or tray close operation. Motor will rotate revere direction.
There are 2 type of cases, where 1stis before full open condition (open/close gear assembly still resting) and the 2ndis after
trays full open condition. For the 1stcondition, motor will rotate the cam gear to move between HOME direction and tray open
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While for the 2ndcase, cam gear inside mechanism will move between specific positions by checking CLOSE-SENSO R signal
change.
 
    · 
    The flow chart for both open reverse (when tray openin g motor reverse) and close reverse (when tray closing motor reverse)
is as below. The operation use when user press OPEN/CLOSE button during tray is openin g or closing.
3.11. Drive tray between STOCK and PLAY position
 
    · 
    Play position is defined as the position whereas the tray is aligned to be played...

 
    · 
    The flow chart and timing chart for unload a disc from PLAY position to STOCK position is as below:
3.12. Selection ofTray by Moving UDbase Up/down
 
    · 
    Tray alignment & selection is achieved by UD (up/down) movement, whereas the Mechanism vertically aligns itself to the
selected tray to be driven to PLAY position or STOCK position. The uppermosttray is defined as tray 1 and bottom most tray
is defined as tray 5. Counting is achieved by resetting during initializ ation to the TOP-SW...

 
    · 
    Tray 1 is the reset position for UD base up/down processing. The position should be unique; a TOP-SW is use in this purpose.
 
    · 
    Below is the flow chart for UD selection processing.
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    · 
    For tray 1 selection, flow chart below will be used.
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3.13. Fail Safe
 
    · 
    Fail safe function is for purpose of recovery of traymovement if the mechanism is not able tocarry out tray open or close within
a specified time.
Fail safe 1: Tray can not open: Fail safe -move all trays to home position
Fail safe 2: Tray can not close: Fail safe -move to next close sensor transition position
Note :For Fail safe 2 :
 1. If done on tray 1 - will fully go to Open position because OC gears are fully engaged
 2. If done on either one of the remaining trays (2,...

3.14. Manual TriggerTrayClose
 
    · 
    W hen user push open tray at full open position, user may able to activate tray to be all close. This function will be disable if user
happen to press OPEN/CLOSE button and fail safe happen before.
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