magazie 6cd

8/2/2019 Magazie 6CD

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Identify the Five Main sections of the IDC Unit.

IN DASH CHANGER UNIT - Module I


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IDC Module I: Identify the Five Main sections of the IDC Unit.

Complete in Dash Changer Unit

1


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The main sectionthat all other sub-

sections areattached to. Also

contains theHorizontal Rackthat controls the

function timing of

sub-sections.

Main Chassis

Horizontal Rack



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Accepts andtransfers thedisc into the

unit for

furtherprocessing.

Also housesthe Optical

DeckAssembly.

Upper chassis unit


3


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Stores thedisc inside

the chassis

beforeretrievalinto theplay or

ejectionmode.

Stocker block


4


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Optical pickup Unit The Optical pickupUnit contains theOptical Pickup, a

Laser Diode whichis highly sensitive

to ESD.

Be sure to observeESD precautions.



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The PCBcontains the

microprocessorchip that

controls thelogic functions.

The PCB is alsohighly sensitive

to ESD.

Printed Circuit Board


6


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Upper

chassis unit PCB

Main Chassis

Opticalpickup unit

Stocker block

Five Major Deck Assemblies


7


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Identify the Five Main sections of the IDC Unit.

IN DASH CHANGER UNIT - Module I

End Module I


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Proper Handling of the IDC Unit.

IN DASH CHANGER UNIT - Module 2


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IDC Module 2 : PROPER HANDLING of the IDC UNIT.

ESD Requirements

Be sure to wear awrist strap to avoiddamaging the unit

with ESD.

1


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Example of a correct way to handle the unit.

Gripping the unit bythe top and bottom of

the chassis in thefront is the safest

way to handle theunit.

2


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Example of an incorrect way to handle the unit

Do not grip the unit withyour fingers inside of the

stocker area .

The storage trays can bebent, misaligned and

dislocated.

3


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Example of a correct way to handle the unit.

The PCB containsthe microprocessorand several other

ESD sensitive

integrated circuits.Contact with thePCB should beavoided while

handling the unit.

4


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Just beneaththe LoadAssembly is the

Optical DeckUnit which

contains theOptical Pickup,a Laser Diodethat is highly

sensitive toESD.

Caution

5


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Do NotHandle

OK to Handle Overview ofcorrect (green)and incorrect(red) handling

areas.

6


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Proper Handling of the IDC Unit.


End Module 2


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Removal and Re-installation of the Upper chassis unit


Part One

IDC M d l 3 R l d R I ll i f h U h i i


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IDC Module 3 : Removal and Re-Installation of the Upper chassis unit.

Preliminaries

A. The CD always follows the same sequence in the deck.For example, it must travel to the stocker before going ontothe play position or ejection mode.

B. Not all disc handling is electromechanical. Some handlingis purely mechanical (no motors involved).

C. Manual operation of Horizontal Rack is the basis tochecking correct deck assembly.

D. Many gears have alignment points which aid in repairand confirming correct operation.

IDC M d l 3 R l d R I t ll ti f th U h i it


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Basic Overview of the Upper chassis unit

The Upper chassis unitaccepts and transfers thedisc into the stocker forstorage before retrieval

into the play position orthe ejection mode.

Location ofLoad Motor

Part One,2

IDC M d l 3 R l d R I t ll ti f th U h i it


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The HorizontalMotor controls

the shutter door.

Location of

HorizontalMotor

Shutter Door

in openposition

Part One,3

IDC Module 3 : Removal and Re Installation of the Upper chassis unit


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Push Lever #1 isspring loaded, not

motor driven.The discis pushed into the

stocker for storage,located in the right

rear of the unit.

Location of Push Lever #1

Direction of disc travel.

Part One,4



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Push Lever #2 isoperated by the

Horizontal Motor andmounts to the inside of

the Stocker AssemblyCover Plate.

Push direction

CD in play position

Location of Push Lever #2

Part One,5



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The Front andRear DiscGuides are

operated by the

Horizontal Motor.

Rear Disc Guides

Front Disc Guides

Part One,6

IDC Module 3 : Removal and Re-Installation of the Upper chassis unit


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The Front andRear Disc

Guides clampthe disc and

lower it onto theOptical Deck

Spindle.

Optical Deck Spindle

End Part One


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Part Two

IDC Module 3 : Removal and Re-Installation of the Upper chassis unit


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IDC Module 3 : Removal and Re Installation of the Upper chassis unit.

Removal of the Upper chassis unit

Deck must be inHome position

beforedisassembling.

Home position iswhere the

alignment pointson the HorizontalRack and MainChassis meet.



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IDC Module 3 : Removal and Re Installation of the Upper chassis unit.


Use a paper clipjig to hold

Horizontal Motorin place duringload assembly

removal. There isno displacement

in timing if work isperformed with a

paper clip insertedinto the alignment

holes.

Insert paper clip here



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C odu e 3 e o a a d e sta at o o t e Uppe c ass s u t


Disconnect theLoading Motor

ribbon cable fromconnector CN301.



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pp


RIGHT SIDE BACK SIDE

A.Remove the two screws that secure the flex PCB tochassis.Carefully fold flex cable away from the chassis.

B. Remove the three screws and then lift off the side Chassis.Note that all three screws are the same size.



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pp


Remove thesingle screw that

connects thestocker cover

plate to the loadassembly on thetop side of the

chassis.



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Disconnect thehorizontal motor

cable fromconnector

CN402 on thebottom side ofthe chassis.



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Remove the two screws on the left side of the chassis.



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Remove the single screw from the shutter door side of thechassis. Note that this screw is shorter than the previous

two and must be replaced to the same location.



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Separate the Upperchassis unit fromthe main chassis.

Unit is nowseparated into threesections:

1. Main Chassis

2. Upper chassisunit

3. Side Chassis

IN DASH CHANGER UNIT M d l 3


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Removal and Re-installation of the upper chassis unit


Part Three



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Manually Checking Unit Functions.

Manual rotation ofthe horizontal gear

is the basis forchecking unit

function andcorrect deckassembly.



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While manuallyrotating the

horizontal gear,observe that the

Optical pickup unit

swings from itshome position, out

into the playposition.



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Whilemanually

rotating thehorizontal

gear, observethat the

stocker plateslower into the

chassis.



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Whilemanually

rotating thehorizontal

gear, observethat the RearDisc Guides

separate.



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Afterobserving unit

functions,return the

horizontalrack to the

homeposition.

IN DASH CHANGER UNIT Module 3


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Part Four



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Reinstalling the Upper chassis unit

The procedure for reassemblingthe Upper chassis unit onto the

Main Chassis is basicallyperforming each of the previous

steps for removal in reverse order.

There are however, somepreliminary positioning

requirements that must be

observed before beginningreassembly.

Tips:A. Attach front of

load assemblyfirst.B. Make surehorizontal motorconnector cable

is out of the way.



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Reinstalling the Upper chassis unit.

The springloaded catch ofthe Lever GuidePlate Assembly

should be pulledcompletely backto allow the

Lever to drop toits lowest

possible position.



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The PushLever Plate of

the Upper

chassis unitmust connectover top of

Push Lever #2on the Main

Chassis .



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Push theeyelet of theGuide CamPlate away

from the frontof the LoadAssembly.

Load Assembly shown upside down.

Front

IIDC Module 3 : Removal and Re-Installation of the Upper chassis unit.


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The GuideCam Leveron the Main

Chassis must

be insertedinto the eyeletof the GuideCam Plate of

the LoadAssembly.



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Confirm that the Guide Cam Lever has been

inserted into the eyelet of the Guide Cam Plate byviewing through the opening just below the shutter

door on the front of the upper chassis unit.



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Confirming Proper Unit Operation.

After completing reinstallation, confirm proper operation ofthe unit by manually rotating the horizontal gear. Manual

operation should not require an excessive amount of force.Verify that:

A. The shutter door opens and closes.B. The optical deck swings into play position.C. The front and rear disc guides operate.D. The stocker assembly lowers into the chassis.

After confirming proper operation, return the horizontal rackto the home position.



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Removal and Reinstallation of the Stocker block

Part One

IN DASH CHANGER UNIT Module 4

The Upper chassis must be removed first.

IDC Module 4 : Removal and Reinstallation of the Stocker block


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Removal of the Stocker block

Before removing thethree cover plate

screws, be careful

not to lose the threethrust springs

positioned beneaththe cover plate.The

springs mount on topof the Cam Gear #1and Cam Gears #2.

Begin by setting the horizontal rack to the home position.



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While lifting thecover plate,

carefully workthe Push Lever

#2 out from thestocker block



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Separate the RearDisc Guide

Assembly from theMain Chassis.

Make note of thealignment points thatmate with the

stocker cover plateand the Main

Chassis.

Top View



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A. Take care not to lose theblack cam gear ring as thestocker cover plate is lifted.

B. Disconnect the ribboncable from connector CN401.

C. Remove the single screwthat secures the stocker

switch PCB to the MainChassis.



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The entirestocker blockcan now belifted off with

the fourstockersprings

remaining inplace.



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The PlasticCam Gears,five in all, willlift off with the

tray assembly,this is ok.



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The MainChassis shownwith the Stockerblock removed.



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The trays can now be separated by removing the fourstocker springs and lifting off each tray individually.

Note: The outer two stocker springs are stronger than theinner two springs. Make note of this for proper reassembly.

WEAKER



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Reinstalling the Stocker block

Part Two

Reinstalling the stocker block is likemaking a sandwich with six layers of

meats and cheeses.

IDC Module 4 : Removal and Reinstallation of the Stocker block.


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The Double - Triple Decker!!



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Align theHorizontal

rack to homeposition.

The Stockerrack shouldalso be in

home positionat this point.



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Replace all fiveof the CamGears onto theirrespective shafts

according to

their alignmentmarkings. Referto page 59 of theTechnical Guide

for moreinformation ongear alignment.

Cam Gears #3

Cam Gear #1

Cam Gears #2



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Cam Gears #3

are alignedaccording to theposition of the

ELV gears at the

base of theshaft.

The ELV gearon the right side

uses a notch inthe main chassisfor alignment.

Cam Gears #3


R i lli h S k bl k


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A. Replace the blackcam gear ring onto Cam

Gear #1.

B. Check that there is

also a cam gear ringinserted into the top ofboth Cam Gears #2.

C. The Cam Gears #3

have no cam gear ring.


R i t lli th St k bl k


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Connect theElevator MotorCable to the

Elevator Motorconnector on theSimplified In-dash

Control Jig.


R i t lli th St k bl k


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Set the voltage ofthe power supply to5 volts then turn the

power supply off.

Connect the black(negative) and thered (positive) wiresto the power supply

and then turn thepower supply on.




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Place the bottomstocker tray housing

plate onto theguide shafts and

press the elevatordown switch on thecontrol jig. The plateshould then fall into

place.




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Be sure that thespring tabs on thebottom housing

plate are pointingdownward. The

spring tabs on theupper plate shouldbe pointing upward

so that they will

retain the stockersprings when theyare reinstalled.




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Prepare forinstalling the

trays bypositioning the

tab on CamGear #1 in an

inward direction.




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Ensure that theedges of the stocker

trays are facingupwards, then place

tray on the guideshafts and press the

elevator downswitch on the control

jig. Repeat this

procedure for eachtray.




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Tip: It may help toapply a slight

pressure near theguide shaft holesin the trays as youpress the elevator

down switch on thecontrol jig.




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Install the tophousing platewith the springtabs pointing

upwards.

Disconnect theelevator motorcable from the

control jig.




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Replace the stocker springs onto the housing plates.

Remember: The outer two springs are stronger than theinner two springs..

WEAKER





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Place the Rear DiscGuide Assembly ontothe Main Chassis.Make note of the

alignment points. The

shaft must be insertedinto the eyelet and thetab into the chassis.




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Place the stocker assemblycover plate on top of the

stocker block. Be sure thatPush Lever #2 is inserted on

the inside of the stockerspring and that the Disc

Guide Assembly is matedwith the alignment points

underneath the stocker cover

plate on the top side of theunit.Top View




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Slightly lift thecover plate and

insert the stockerthrust springs ontop of the Cam

Gears #1 and #2.Partially tighteneach screw to

retain the springs

as the assemblycontinues.




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e sta g t e Stoc e b oc

Inspect theinstallation for

alignment.Finish tighteningthe cover plate

screws.Reconnect theelevator motor

cable to the

control jig.




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g

Operate the stocker assembly with the control jig to confirmthat all trays separate evenly.

Caution! Do not allow tab on stocker Cam Gear #1 to travelhigher than the top plate or lower than the bottom plate. This

will cause the stocker assembly to jam.

IDC Module 4 : Removal and Reinstallation of theStocker block



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g

After confirming properoperation of the stockerblock , turn off the power

supply and disconnect thecontrol jig. Insert the

ribbon cable into CN401.Insert and tighten the

single screw that securesthe stocker switch PCB to

the chassis.




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g

Reinstall the Upper chassis unit (Module 3).

Confirm that all deck functions are working properly.



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Removal and Reinstallation of the Optical pickup unit

Part One

CD Load Assembly must be removed first.

IDC Module 5 : Removal and Reinstallation of the Optical Deck Assembly

Removal of the Optical pickup unit


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The Opticalpickup unitcontains the

Optical Pickup,a Laser Diode

which is highlysensitive to

ESD.

Be sure to

observe ESDprecautions.


Removal of the Optical pickup unit Cover the lens


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Cover the lensof the optical

pickup with apost-it notemaking sure

the adhesive is

not put directlyon the lens.This will protectthe lens fromany contact

duringhandling.




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Place a solder beadbetween the twoexposed conductorson the ribbon cable

that connects to

CN101.

Safety Alert!: Eyeprotection required

when soldering.




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Disconnectthe ribboncables

leading toconnectors

CN 101 andCN 501.




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Carefullyremove the tapethat secures theribbon cables to

the chassis.

Reserve thetape for

reapplication.




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Remove the

single screwthat secures theribbon cables to

the chassis.

Examine andmake note of

the foldingpattern of theribbon cables

for easierreinstallation.




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To remove theOptical pick up unit ,

remove the twoscrews that securethe assembly to the

main chassis.Rotate the Opticalpickup unit play

position then slide

off of the swinglever shaft.



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Removal and Reinstallation of the Optical pickup unit

Part Two


Disassembling the Optical pickup unit


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Remove theBalance spring

that connects thesuspension plate

to the swingchassis.

Some unitversions may

have two balancesprings.




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On the underside of the assembly, turn the bearing bracketcounter clockwise to release the suspension plate.

LOCKED




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After rotating thebearing bracket

counterclockwise, slide

the suspensionplate to the left tounlock it beforeremoval but do

not remove it yet.

UNLOCKED




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Before removingthe suspensionchassis bottom

plate, make note ofthe specific location

of each damperspring. Although all

springs are thesame height, each

has a differenttension strength.


Removeh fi



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the five

indicatedscrews.

Replace allscrews to

the exactlocation.Note the

exact routeof the

ribboncable.




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Next remove the screw from the gear bracket assembly.Then remove the screw from the traverse motor bracket.

Now the optical pickup can be separated from thesuspension chassis.




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Optical Pickup completely disassembled.



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Reassembling and Reinstalling the Optical pickup unit

Part Three

Reassembly and reinstallation of the optical deckbasically consists of performing each of the

previous steps in reverse order with the exceptionof some pre-positioning requirements.

(Refer to pages 48 ~ 56 of the Technical Guide formore information on reinstalling the Optical Deck.)


Reassembling the Optical pickup unit


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Replace the screw to the traverse motor bracket then

replace the screw to the gear bracket.




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The optical pickup assy should be adjusted completelyinward on the feed screw before installing the bottom

suspension plate.




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When reinstalling the bottom suspension plate onto thesuspension chassis, ensure that the indicated tab of the

optical pickup is positioned between the two fingers onthe bottom suspension plate.


R l



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Replace

each of thefive screws

to theirrespective

locationsand routethe ribboncable to its

originalpath.




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Check that the swing spring is in the correct position.




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Applying a small amount of alcohol to the insertion ports of

the three dampers will make insertion of the mating postseasier.




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On the underside of the assembly, turn the bearingbracket clockwise to lock the suspension plate.

LOCKED




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The optical pickup should now be adjusted to thecenter (home position) of the feed screw for the

remaining reassembly.


Reinstalling the Optical pickup unit

Wh th ti l


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When the optical

deck assembly isflipped over for

mounting to the mainchassis, the swing

lever shaft on themain chassis mustbe slid into the flute

of the swing chassis.



During mounting


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During mounting,

positioning theoptical pickup

assembly into playposition will make

insertion of the swinglever shaft into theflute of the swingchassis easier.



Once the swing lever


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Once the swing lever

shaft is properlyplaced, rotate the

optical pickupassembly into the

standby (home)position and install

the two supportscrews from the

bottom side of themain chassis.

R i t lli th O ti l i k it



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End Module Five

Reinstall the Upper chassis unit (Module 3) thenconfirm that all unit functions are working properly.

magazie 6cd

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