PANASONIC CRS1 Service Manual

7.2.1 CD Loading Unit

Plunger lever Step 1: Turn over the unit and install the plunger lever in 90

degree position. Step 2: Push in the plunger lever.

Step 3: Turn over the unit and install the motor unit properly.

Plunger assembly

Step 4: Install the plunger assembly. CD loading P.C.B.

Step 5: Install the CD Loading P.C.B.

Step 6: The claws should be latched.

Step 7: Solder the 4 points.

Step 8: Fix it with 4 screws.

Play switch lever

Step 9: Install the play switch lever.

Step 10: Fix the spring below the rib.

Function lever

Step 11: Install the the function lever.

Play gear 1 Step 12: Install the play gear 1.

Function gear and main drive gear

Step 13: Install the main drive gear. Step 14: Install the function gear.

Gears Step 15: Install the relay gear 2, switching gear and UD gear 1

respectively.

Step 16: Install the cam gear.Make sure the big hole is fix at the

position (A) at 90 degree.

Step 17: Turn the cam gear anti-clockwise until the big hole

stop at position (B).

Step 18: Install the relay gear 1, relay gear 3, UD gear 2, long

gear and play gear 2 respectively.

Step 19: Install the tray relay gear.

Pulley gear and belt

Step 20: Install the pulley gear followed by the belt.

Change spring

Step 21: Install the change spring.

Pitch plate

Step 22: Install the lock lever 2 in sequence. Step 23: Install the pitch plate.

Step 24: The 4 claws should be latched properly. Step 25: Fix it with 3 screws.

Trigger gear

Step 26: Install the trigger gear in sequence.

Step 27: Use the screwdriver to turn the hole

on the UD gear 2 align with the pitch plate hole.

UD rack R

Step 28: Insert the UD rack R.

Step 29: Push the UD rack R.

UD rack L Step 30: Insert the UD rack L. Step 31: Push the claw. Step 32: Pull the UD rack L.

Tray drive rack Step 33: Install the tray drive rack. Play lever B Step 34: Install the play lever B below the rib.

7.2.2 Disc Trays

Step 1: Tilt and fix the 5 disc trays.

Step 2: Push the 5 disc trays until it stop.

Step 3: Push the tray drive rack until it stop.

Lock lever 1

Step 4: Fix the lock lever 1 onto the pitch plate.

Step 5: Press and hold the claw at the pitch plate then push

the UD rack R.

Step 6: Push the claw and slide the UD rack L.

UD connection lever

Step 7: Install the UD connection lever.

7.2.3 UD Base Assembly

Step 1: Push the traverse slide plate.

Step 2: Install the UD base assembly.

Step 3: Turn UD connection lever anti-clockwise,

the UD base assembly will move downwards.

Step 4: Install the tray lock lever to the mechanism base

and push the tray lock lever with a hand to fix it.

Step 5: Push the disc trays back to the unit.

Trigger Slide Plate

Step 6: Install the trigger slide plate, push forwards and push the trigger until locked by the claw.

Step 7: Install the OC gear spring followed by the OC gear assy.

Step 8: Install the open switch lever. Step 9: Install the gear cover. Step 10: Install the open lever spring. Step 11: Install the top cover, fix the top cover hook to

the tray rear stopper.

Step 12: Fixed the top cover, the 2 claws should be latched.

7.2.5 Traverse Unit

Step 1: Turn over the unit and install traverse unit.

Step 2: Push the traverse slide plate to lock the traverse unit.

7.2.4 CD Loading P.C.B

Step 1: Install the plunger assembly. Step 2: Install the CD Loading P.C.B. Step 3: The claw should be latched. Step 4: Fix it with 4 screws. Step 5: Solder the 4 points.

1. Top Cover

2. Open Lever Spring

3. Gear Cover

4. Open Switch Lever

5. OC Gear Spring

6. OC Gear Assy

7. Trigger Slide Plate

8. Tray Lock Lever

9. UD Base Assy

10. UD Connection Lever

19. Screw

28. Relay Gear 3

11. Lock Lever 1

20. Pitch Plate

29. Relay Gear 1

12. Tray

21. Change Spring

30. Cam Gear

13. Play Lever B

22. Belt

31. UD Gear 1

14. Tray Drive Rack

23. Pulley Gear

32. Switching Gear

15. UD Rack L

24. Tray Relay Gear

33. Relay Gear 2

16.UD Rack R

25. Play Gear 2

34. Function Gear

17. Trigger Gear

26. Long Gear

35. Main Drive Gear

18. Lock Lever 2

27 UD Gear 2

36. Play Gear 1

37. Play Switch Lever

38. Function Lever

39. Screw

40. CD Loading PCB

41. Plunger Lever

42. Mech Base

43. Play Lever Spring

44. Limit Spring

7.1.7 Traverse Unit

Step 1: Press and hold the plunger lever and rotate the gear until it stop.

Step 2: Push the traverse slide plate to release

the traverse unit.

Step 3: Remove the traverse unit.

7.1.8 Limit Spring

Step 1: Remove the limit spring.

7.1.9 Play Lever Spring

Step 1: Remove the play lever spring.

7.1.1 UD Base Assembly

Step 1: Press the 2 claws downward and push the top cover backwards and lift up the top cover to remove it.

Step 2: Release the top cover from the tray rear stopper

and remove the top cover.

Step 3: Remove the open lever spring from the gear cover. Step 4: Push forwards and remove the gear cover.

Step 5: Remove the open switch lever.

Step 6: Remove the OC gear assy followed by the OC

gear assy.

Step 7: Press the claw, push backwards and remove the trigger slide plate.

Step 8: Use a minus screwdriver slot into the gap and push out the tray lock lever.

Step 9: Push the disc trays towards the front. Step 10: Turn the UD connection lever clockwise.

Step 11: Push the claw and slide the UD rack L.

Step 12: Press and hold the claw at the pitch plate then push

the UD rack R.

Step 13: Remove the UD base assembly.

7.1.2 DiscTrays

UD connection lever

Step 1: Remove the UD connection lever.

Step 2: Push the claw and remove the lock lever 1.

Step 3: Push the tray drive rack to hit the stopper.

Step 4: Push the 5 disc trays until it stop.

Step 5: Lift up slightly and push the 5 disc trays further.

Step 6: Tilt and remove the 5 disc trays.

7.1.3 CD Loading Unit

Play lever B

Step 1: Push the UD rack L forwards.

Step 2: Position the tray drive rack in the center.

Step 3: Push the play lever B and lift up the rib slightly to remove the play lever B.

Tray drive rack

Step 4: Release the claw and then slide and remove the tray drive rack.

UD rack L

Step 5: Push the claw. Step 6: Slide the UD rack L. Step 7: Lift up the unit.

Step 8: Follow the groove to lift up and remove the UD rack L.

UD rack R Step 9: Slide the UD rack R until it stop.

Step 10: Press the claw. Step 11: Continue to slide the UD rack R until it stop. Step 12: Lift up the UD rack R and slide backwards to stop

at the stopper.

Step 13: Remove the UD rack R. Trigger gear Step 14 Turn the trigger gear clockwise and remove it.

Pitch plate Step 15: Release 3 screws.

Step 16: Remove 4 claws in order followed by detach the pitch

plate.

Lock lever 2

Step 17: Release the claw and pull out the lock lever 2.

Change spring

Step 18: Remove the change spring.

Pulley gear and belt

Step 19: Remove the belt and pull out the pulley gear.

Gears Step 20: Remove relay gear 1, relay gear 3, UD gear 2, long

gear, play gear 2 and tray gear in order. Step 21: Remove relay gear 2, switching gear, UD gear 1 in

order. Cam gear

Step 22: Remove cam gear.

Function gear and main drive gear

Step 23: Remove main drive gear and function gear.

Play gear 1 Step 24: Remove play gear 1.

Function lever Step 25: Remove the function lever from the ribs.

Step 26: Release the spring from the ribs to remove the play

switch lever.

7.1.10 Pitch Plate Assembly

Step 1: Slide the UD rack L backwards, push the claw.

Step 2: Slide the UD rack R until it stop.

Step 3: Press the claw.

Step 4: Push the claw, then turn the trigger gear clockwise and remove it .

Step 5: Remove 3 screws.

Step 6: Release 4 claws in order followed by detach the pitch plate.

7.1.4 CD Loading P.C.B.

Step 1: Turn over the unit and remove 4 screws

from the CD loading P.C.B.

Step 2: Unsolder the 4 points.

Step 3: Release the claw.

Step 4: Remove the CD Loading P.C.B.

Plunger assembly

Step 5: Remove the plunger assembly by using a minus screw driver.

7.1.5 Plunger Lever

Step 1: Remove the switching gear.

Step 2: Install the pitch plate.

Step 3: Lift up the plunger lever in 90 degree.

Step 4: Remove the plunger lever in 90 degree position.

7.1.6 Motor Unit

Step 1: Push the motor unit to remove it.

ABCDEFG

CD LOADING P.C.B (REPX0439A)

SOLENOID

SW5

(PLAY)

412

PH1

(UD SENSOR)

CN1

IC1

SW4

(TOP)

2143

SERVICE JIG

PH2

(CAM SENSOR)

SW3

(HOME)

SW2

(STOCK)

0458A

PbF

0458A

SW1

(OPEN)

SCHEMATIC DIAGRAM - 1

CD LOADING CIRCUIT

C0GAG0000007

LOADING MOTOR DRIVE

VREF

OUT2

RNF

23456

SW4 TOP

UD SENSOR

PH1

SG233

R1 1K

IC1

OUT1VMVCC

SW5

PLAY

: +B SIGNAL LINE

IN1

GND

IN2

SW2

STOCK

SW1

OPEN

789

16V100

SW3

HOME

PH2

SG233

CAM SENSOR

390

CN1

CCW

PGND

VCC_8V

HOME_SW

ST_SW

OPEN_SW

CAM_SENSOR

DGND

PLAY_SW

UD_SENSOR

BOTTOM_SW

SPEED

MAIN

CIRCUIT

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ORDER NO. MD0509368C0 A6 Mechanism Unit CRS1

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1 Mechanism Overview

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13 Replacement Parts List

Notes:

● 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.

When replacing any of these components, be sure to use only manufacturers’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 supplied by PAVCSG .

13.1 CD Loading Mechanism Parts List

Ref.

No.

Part No. Part Name & Description Remarks

TRAVERSE DECK

301

RFKJAA340PS MECHA CHASSIS ASS’Y [M]

302

RMLX0029 TOP COVER [M]

303

XTB3+8JFJ SCREW [M]

304

RMMX0008 TRAY DRIVE RACK [M]

305

RMMX0009 UD RACK L [M]

306

RMMX0010-1 UD RACK R [M]

307

RMLX0027 PLUNGER LEVER [M]

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308

RMS0398-1 MOVING CORE [M]

309

RAQX0001-V PLUNGER ASS’Y [M]

310

REMX0001 MOTOR UNIT [M]

311

RDGX0017 PULLEY GEAR [M]

312

RDVX0001 BELT [M]

313

RDGX0018 RELAY GEAR 1 [M]

314

RDGX0019 RELAY GEAR 2 [M]

315

RDGX0038 RELAY GEAR 3 [M]

316

RDGX0037 MAIN DRIVE GEAR [M]

317

RDGX0022 CAM GEAR [M]

318

RDGX0023 SWITCHING GEAR [M]

319

RDGX0024 LONG GEAR [M]

320

RDGX0025 FUNCTION GEAR [M]

321

RDGX0026 UD GEAR 1 [M]

322

RDGX0027 UD GEAR 2 [M]

323

RDGX0028 PLAY GEAR 1 [M]

324

RDGX0029 PLAY GEAR 2 [M]

325

RDGX0031-1 TRAY RELAY GEAR [M]

326

RMLX0024 FUNCTION LEVER [M]

327

RMLX0033 PLAY SWITCH LEVER [M]

328

RMBX0044 PLAY LEVER SPRING [M]

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329

RMBX0040 CHANGE GEAR SPRING [M]

330

RMLX0032 PLAY LEVER B [M]

331

RMBX0041

CLAMPER SUPPORT PLAT

[M]

332

RMMX0011

CLAMPER SUPPORT PLAT

[M]

333

RXQX0021 CLAMPER UNIT [M]

334

RMLX0031 PLAY LEVER A [M]

335

RMLX0025 TRAY CATCH LEVER [M]

336

RMLX0034 TRAY REAR STOPPER [M]

337

RMMX0007-1 TRV SLIDE PLATE [M]

338

RMRX0057-1 UD BASE [M]

339

RMLX0028 UD CONNECTION LEVER [M]

341

RMLX0036 LOCK LEVER 2 [M]

342

RMLX0035 LOCK LEVER 1 [M]

343

RDGX0030 TRIGGER GEAR [M]

344

RMBX0043 LIMIT SPRING [M]

345

RMQX0132-1 PITCH PLATE [M]

346

RMLX0026 OPEN SW LEVER [M]

347

RXQX0019 OC GEAR UNIT [M]

348

RMCX0031 OC GEAR SPRING [M]

349

RMQX0133-1 GEAR COVER [M]

350

RMLX0030 TRAY LOCK LEVER [M]

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351

RMMX0006 TRIGGER SLIDE PLATE [M]

352

RMRX0056A1

TRAY 1 [M]

353

RMRX0056B1

TRAY 2 [M]

354

RMRX0056C1

TRAY 3 [M]

355

RMRX0056D1

TRAY 4 [M]

356

RMRX0056E1

TRAY 5 [M]

357

RMEX0042 OPEN LEVER SPRING [M]

13.2 Electrical Parts List

Ref.

No.

Part No. Part Name & Description Remarks

PRINTED CIRCUIT BOARD

REPX0439A CD LOADING P.C.B.

[M] (RTL)

INTEGRATED CIRCUITS

IC1 C0GAG0000007 IC DRIVER [M]

SWITCHES

SW1 RSH1A045-1A SW OPEN [M] SW2 K0L1BA000117 SW STOCK [M] SW3 K0L1BA000086 SW HOME [M] SW4 K0L1BA000078 SW TOP [M] SW5 K0L1BA000078 SW PLAY [M]

CONNECTORS CN1 K1MN14A00049 14P FFC CONNECTOR [M] PH1 B3NAA0000004 PHOTOSENSOR [M]

PH2 B3NAA0000004 PHOTOSENSOR [M]

RESISTORS R1 D0AE102JA048 1K 1/4W [M]

R2 D0AE101JA048 100 1/4W [M]

CAPACITORS C1 ECEA1CKA101B 100 16V [M]

FLE0509D/E/J/N/S/A

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2 Mechanism Drive Unit 2.1 Tray Open/Close and Multi-Discs Change operations

2.1.1 Description of

tray open/close and multi-discs change operations

1. The motor turns in the clockwise direction and the rotation is transmitted via the belt, the pulley gear also turns clockwise.

2. The relay gear 1 turns counterclockwise.

3. The relay gear 2 turns clockwise.

4. The relay gear 3 turns counterclockwise.

5. The switching gear at down position turns clockwise (up/down position functioned by the plunger lever).

6. The main drive gear turns counterclockwise.

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7. The cam gear turns clockwise, which is engaged with the trigger gear and slide plate, are driven, causes the tray lock lever unlock.

8. The tray relay gear turns counterclockwise, which is engaged with the OC assy, is driven.

9. The movement of the OC assy releases the disc trays.

(The operation of the disc trays closed is the opposite of that for opening of disc trays.)

2.2 Disc Selection operation

2.2.1 Description of

disc selection operation Note: Check that the cam gear is in “HOME” position.

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1. The motor turns in the clockwise direction and the rotation is transmitted via the belt, the pulley gear also turns clockwise.

2. The relay gear 1 turns counterclockwise.

3. The relay gear 2 turns clockwise.

4. The relay gear 3 turns counterclockwise..

5. The switching gear move up turns clockwise (up/down position functioned by the plunger lever).

6. The long gear turns counterclockwise.

7. The function gear moved up turns clockwise.

8. The UD gear 1 turns counterclockwise.

9. The UD gear 2 turns clockwise engaged with the UD rack R drives the UD connection lever turns clockwise, UD rack L, is driven to move the traverse deck assembly up.

(The operation of the traverse deck assembly down is the opposite of that for the traverse deck assembly up.)

2.3 Play/Stop operation

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2.3.1 Description of

play/stop operation Note: Check that the Lock Lever 1 is unlock.

1. The motor turns in the clockwise direction and the rotation is transmitted via the belt, the pulley gear also turns clockwise.

2. The relay gear 1 turns counterclockwise.

3. The relay gear 2 turns clockwise.

4. The relay gear 3 turns counterclockwise.

5. The switching gear move up turns clockwise (up/down position functioned by the plunger lever).

6. The long gear turns counterclockwise.

7. The function gear move down turns clockwise.

8. The play gear 1 turns counterclockwise.

9. The play gear 2 turns clockwise engaged with the tray drive rack and tray catch lever to push in the disc trays.

10. Play lever B engaged with the traverse deck assembly’s play lever A, causes slide plate move towards to the play position.

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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 Function

Open Switch (OPEN-SW)

The switch is used to detect normal tray opening The switch is used for detect tray being manually push/trigger when full open

Home Switch (HOME-SW) Is used to detect cam gear home position Close Sensor (CLOSE-

SENSOR)

Used for normal single tray closing

Used to detect cam gear rotate to Play Driving position Play Switch (PLAY-SW) Detect TRV clamping complete position Stocking Switch (STOCK-SW) Detect tray completely transfer for play position to stocking positi UD Sensor (UD-SENSOR) Detect TRV vertical movement position Top Switch (TOP-SW) Detect a default position of TRV vertical movement position Driver IC To drive Motor Motor Main driving source for changer

Plunger

Switching the driving source from motor to:

1. Tray open/close

2. Drive tray to play/stock position and TRV vertical movemen

3.3 Mechanism Operation

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● 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:

Note: * represent tray number (from 1 ~ 5)

Condition Explanation

Open current playing tray

The state to change current playing disc. All tray will be open at once and current tray at PLAY position will be expose.

Open All

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.

Stock The state where the trays are stored in STOCK position

Play

The state where one of the tray 5 trays is being driven to PLAY position and clamped by traverse unit

Play & Open Tray-*

The state where one of the tray is in playing position performing recording or reproducing, other trays can be used (OPEN position) for disc exchanging without stopping the recording or reproducing process.

Change

The state when one of the opened tray being driven from OPEN position to STOCK position and other opened trays remain still at OPEN position.

Close All

The state where all open trays will being driven from OPEN position to STOCK position, one by one from top to bottom

● Logics of motor control:

Notes :

CW/CCW : Motor direction control (CW : clockwise, CCW : Anti-clockwise)

Plunger : Solenoid Control (H : ON = Activation)

Action CW CCW Plunger Tray Opening H L L Tray Closing L H L Cam move from Home Position to Play Driving

Position

H L L

Cam move from Play Driving Position to Home Position

L H L

Drive tray to PLAY position H L H Drive tray to STOCK position L H H UD base moving upward H L H UD base moving downward L H H

● Cam gear in the mechanism use for opening/closing of trays and lifting a function gear to link

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to gear train that drive UD base moving up/down. When cam gear is being driven to play driving position, the function gear will be bring down to link the gear train that drive tray to and from STOCK position and PLAY position. Below are the relation between mechanism function and cam gear movement and position

Motor

Direction

Plunger

Unit

Cam gear movement/position Function

CW Release

Home SW → rotate CW

Trays Open

CCW Release

Rotate CCW → Home SW

Trays Close

CW Release

Home SW → close sensor 1st L-H signal

Cam gear move from Home Position to Play Driving Posi

CCW Release

Close sensor 1st (H → L) signal → Home SW

Cam gear move from Play Driving

Position to Home Position CW Up Cam Stop at Home Position UD base moving from bottom to top CCW Up Cam Stop at Home Position UD base moving from top to bottom

CW Up Cam Stop at Play Driving Position

Tray move from STOCK to PLAY

position

CCW Up Cam Stop at Play Driving Position

Tray move from PLAY position to

STOCK Position

● Cam gear rotation direction, switch and state changes is show in figure below:

● The movement of UD base (vertical up/down) and driving of tray(s) between STOCK

position and PLAY position is only enable when plunger ON (lift up the switching gear to link driving source to the both gear train). Only one gear train can be driven at one time, the selection of either gear train is depending on cam gear position. Below are figure showing the operation of motor driving direction and its function carry out.

Cam Gear

Motor Home Position (UD Driving Position)

Play Driving Position

UD base move upwards direction 5→1 Stock → Play

CCW

UD base move downwards direction 1→5

Play → Stock

● For driving UD base up/down the cam gear must be at the home position (UD driving

position) and plunger need to be activated, the switch and state change is as figure below:

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● 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 opening 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 opening and closing flow.

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3.4 Switches Chattering Check

● Each input shall perform chattering check processing.

OPEN-SW

2ms Periodic sampling. It logic-decides by continuation same 5 times.

PLAY-SW

2ms Periodic sampling. It logic-decides by continuation same 5 times.

STOCK-SW

2ms Periodic sampling. It logic-decides by continuation same 5 times.

TOP-SW

2ms Periodic sampling. It logic-decides by continuation same 5 times.

HOME-SW

2ms Periodic sampling. It logic-decides by continuation same 5 times.

UD-SENSOR

2ms Periodic sampling. It logic-decides by continuation same 5 times.

CLOSESENSOR

2ms Periodic sampling. It logic-decides by continuation same 5 times.

3.5 Motor Movement Control

Condition

Motor

CW CCW Free L L Rotate CW H L Rotate

CCW

L H

Short Brake H H

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3.6 Plunger Timing Chart

● Plunger is use for pulling the lever that a switching gear is sit on the lever. When current

supply to the plunger to pulling (kick) switching gear, it will be lift up to engage to 1 st gear train. When current supply to plunger is cut off (release), switching gear will be bring done by gravity force and mechanical coil spring on top of it. Plunger use for connect the driving source from motor to 2 different gear train in the mechanism, the functions of the gear trains are as below:

1. Tray open/close

2. Drive tray to play/stock position and TRV vertical movement

● The plunger movement is define as below:

Kick = H, Release= L

● Each time during plunger activation time (Kick/Release), the motor shall perform a short time

CW and CCW rotation for release the gear side force and ensure complete gear to gear engagement.

● The basic concept of the motor rotation sequence (CW or CCW) is base on the initial and

final motor rotating direction. The direction should be opposite 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 the type of motor short rotation direction is as below:

Motor

Direction

Initial

Short Rotate Direction

Final

Switching

Mode

1 st 2 nd 3 rd

Plunger Kick

CCW CW CCW CW A CCW CW - CCW B

CCW

CW CCW - CW C CW CCW CW CCW D

Plunger

Release

CCW CW CCW CW E CCW CW - CCW F

CCW

CW CCW - CW G CW CCW CW CCW H

● Below are the timing charts of plunger activation time.

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● As the plunger only activate at 2 position of cam gear. The plunger mode summary as below:

Switching

Position

Initial Motor Direction

Switching

Mode

Initial Motor Direction Function

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Home

Position

Cam gear rotate CCW to HOME

Motor : CCW

UD base move from bottom to top

Motor : CW

Tray selection from bottom to top

Cam gear rotate CCW to HOME

Motor : CCW

UD base move from top to bottom

Motor : CCW

Tray selection from top to bottom

UD base move from bottom to top

Motor : CW

Cam gear rotate CW from HOME to Play Driving Position. Motor : CW

After tray selection, cam gear rotate to Play Driving Position

UD base move from top to bottom

Motor : CCW

Cam gear rotate CW from HOME to Play Driving Position. Motor : CW

After tray selection, cam gear rotate to Play Driving Position

Play

Driving

Position

Cam gear rotate CW from HOME to Play Driving Position. Motor : CW

Drive tray from STOCK position to PLAY position. Motor : CW

Load tray to Play

Cam gear rotate CW from HOME to Play Driving Position. Motor : CW

Drive tray from PLAY position to STOCK position. Motor : CCW

Unload tray from Play to Stock

Drive tray from STOCK position to PLAY position. Motor : CW

Cam gear rotate CCW from Play Driving Position to HOME. Motor : CCW

After load tray to Play, cam gear return to HOME

Drive tray from PLAY position to STOCK position. Motor : CCW

Cam gear rotate CCW from Play Driving Position to HOME. Motor : CCW

After unload tray from Play, cam gear return to HOME

Drive tray from PLAY position to STOCK position. Motor : CCW

Cam gear rotate CW from until trays full open. Motor : CW

Open trays while one tray Play

● Switching mode G is used during initialization to ensure that the switching gear is at the

release (down) condition before the initialization process begins.

3.7 Initialization of Mechanism Unit.

● Mechanism Initialization -- This mechanism is designed to operate & set to a pre-defined

position to prevent malfunction when unavoidable circumstances happen. For examples: user mis-handling during transportaion or abnormal user operations.This is comply to the product shipping reliability standards.

● Mechanism is initialized when the mechanism controller is unable to detect the present

condition/state of mechanism. For example, when the microcomputer carries out a cold start. (In complete unit)

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● Once the initialization process is completed, the mechanism unit is set to this condition:-

1. Tray 1 is at PLAY position (Top tray)

2. The traverse unit is at clamping condition (PLAY SW-L)

3. All the remaining trays are in STOCK Position (Trays 2 ~ 5 )

4. Plunger lever at release condition

5. Cam gear is at Home position ( HOME SW-L)

6. Motor is free (CW-L, CCW-L)

Note: This is same as shipment condition. (In complete unit)

● Below is the flow chart of the initialization process:-

3.8 Mechanism “HOME” position

● Mechanism HOME position is a starting position for few functions, such as below:

1. Load tray from STOCK position to PLAY position

2. Unload tray from PLAY position to STOCK position

3. Open trays

4. Driving UD base up/down

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● 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 base movement

● There are 2 type of mode to go to HOME position.

Mode 1 is to go to HOME position and motor brake and stay at HOME position, motor need longer brake time for reduce overrun of mechanical parts.

For Mode 2, after mechanism go to HOME position, motor immediately rotate reverse direction to go do loading/unloading processing, shorter brake time necessary to reduce the total mechanism operation time.

The table below is types of "GO HOME" mode and operation that use it.

GO HOME MODE 1 GO HOME MODE 2

1. After loading tray to PLAY position

1. After closing all trays (no tray at PLAY position)

2. After unloading tray to STOCK position

3. After closing all trays (one tray at PLAY position)

● 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.

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3.9 Mechanism “Play Driving” position

● Play driving position is a position driving source linkage to drive the tray(s) between STOCK

position and PLAY position (load and unload of tray). Cam gear will rotate to this position from HOME position, and after the completion of clamping process will back to HOME position.

For Go to Play Driving position, cam gear move from HOME position, motor brake after detect 1 st time CLOSE sensor signal change from H→L

● Below is the flow chart for the mechanism to set PLAY DRIVING position.

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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 "Change 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. All trays will remain open until "DISC CHANGE" or "OPEN/CLOSE" is pressed. When "DISC CHANGE" is pressed, the upper most tray will close while "OPEN/CLOSE" is close all trays.

2. Open selected tray while one tray at PLAY position

Occurs when specify tray is selected to be opened while one tray is at PLAY position. This operation never disturbs the playing disc operation and allow user to change desire disc on specific tray.

3. Direct open playing tray

Occurs only when the user selects to open playing tray. Tray at PLAY position will stop recording/reproducing process and being driven to STOCK position. This will follow by driven all trays to OPEN position and trays closing until the previous playing tray expose for disc changing.Example: User press "DISC CHANGE" + "DISC 3". Mechanism opens all the trays, then closes trays 1 & 2 respectively exposing the tray 3.

● 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.

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