Panasonic Crs 1 Service Manual

							Step 2: Install the CD Loadin g P.C.B. as arrows shown.
Step 3: The claw should be latched.
Step 4: Fix it with 4 screws.
Step 5: Solder the 4 points.
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CRS1 
						

							7.2.5. Assembly of Traverse Unit
Step 1: Turn over the unit and install the traverse unit.
Step 2: Push the traverse slide plate as arrow shown to
lock the traverse unit.
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CRS1 
						

							8 CRS1 (Changer Unit) Ageing / Reliability
Purpose: It is necessary totest the mechanism unit by using the Service Jig P.C.B., make sure itworks in order before
install it to the main unit.
8.1. Equipments
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CRS1 
						

							(All schematic diagrams may be modified at any timewith
the develo pment of new technology)
Note :
SW1 Open switch
SW2 Stock switch
SW3 Home switch
SW4 Top switch
SW5 Play switch
 
    · 
    The voltage value and waveforms are the reference voltage
of this unit measured by DC electronic voltmeter (high
impedance) and oscilloscope on the basis of chassis.
Accordingly, there may arise some error in voltage values
and waveforms depending upon the internal impedance of
the tester or the measuring unit.
 
    · 
    Importance safety notice :
Components identified by
mark have special
characteristics important for safety. Furthermore, special
parts which have purposes of fire-retardant (resistors), high-
quality sound (capacitors), low-noise (resistors), etc. are
used.Whenreplacing any of components, be sure to use
onlymanufacturer´s specified parts shown in the parts list.
Caution !
IC, LSI and VLSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
 
    · 
    Cover the parts boxes made of plastics with aluminium foil.
 
    · 
    Put a conductive mat on the work table.
 
    · 
    Ground the soldering iron.
 
    · 
    Do not touch the pins of IC, LSI or VLSI with fingers directly .
9 Notes of Schematic Diagram
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CRS1 
						

							10 Schematic Diagram
10.1. CD Loading Circuit

 
 

 
 










 




	





	












 







 
 
  

 









 



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CRS1 
						

							11 Printed Circuit Board
11.1. CD Loading P.C.B.

	






 	









 

 


 

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CRS1 
						

							12 Exploded Views
12.1. CD Loading Mechanism
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CRS1 
						

							98
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							99
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							Notes:
13 Replacement Parts List
 
    · 
    Important safety notice:
Components identified by
mark have special characteristics important for safety.
Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise
(resistors), etc. are used.
Whenreplacing any of these components, be sure to use onlymanufacturers’s specified parts shown in the parts list.
 
    · 
    Capacitor values are in microfarad (µF) unless specified otherwise, P=Pico -farads(pF); Farads.
 
    · 
    Resistance values are in ohms, unless specified otherwise, 1K=1,000(ohms).
 
    · 
    The marking (RTL) indicates that the Retention Time is limited for this item. After the discontinuation of this assembly in
production, the item will continue to be available for a specific period of time. The retention period of availability is dependant
on the type of assembly, and in accordance with the laws governing part and product retention. After the end of this period, the
assembly will no longer be available.
 
    · 
    [M] Indicates in the Remarks columns indicates parts that are supplie d byPAVCSG.
100
CRS1