Panasonic CRS1 User manual

1 Mechanism Overview 3
2 Mechanism Drive Unit 4
2.1. Tray Open/Close and Multi-Discs Change operations 4
2.2. Disc Selection operation 5
2.3. Play/Stop operation 7
3 Mechanism Operation Description 9
3.1. General Feature 9
3.2. Hardware composition 9
3.3. Mechanism Operation 9
3.4. Switches Chattering Check 12
3.5. Motor Movement Control 12
3.6. Plunger Timing Chart 12
3.7. Initialization of Mechanism Unit. 15
3.8. Mechanism "HOME" position 16
3.9. Mechanism "Play Driving" position 17
3.10. Trays Operation 18
3.11. Drive tray between STOCK and PLAY position 25
3.12. Selection of Tray by Moving UD base Up/down 26
3.13. Fail Safe 29
3.14. Manual Trigger Tray Close 30
3.15. Changer Error Code 31
4 Self diagnosis and special mode setting 32
©2005 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
CRS1
4.1. Special Mode Table 32
4.2. Error code Table 34
5 Troubleshooting Explorer 38
5.1. Preparation of service jig 38
5.2. Checking of Changer Unit 38
5.3. Setting the trays in "STOCK" position 38
6 Flow Chart 49
6.1. Disassembly Flow Chart 49
6.2. Assembly Flow Chart 50
6.3. Disassembly Flow 51
7 Assembling and Disassembling Procedure. 53
7.1. Disassembling Procedures 53
7.2. Assembling Procedure 73
8 CRS1 (Changer Unit) Ageing / Reliability 93
8.1. Equipments 93
9 Notes of Schematic Diagram 94
10 Schematic Diagram 95
10.1. CD Loading Circuit 95
11 Printed Circuit Board 96
11.1. CD Loading P.C.B. 96
12 Exploded Views 97
12.1. CD Loading Mechanism 97
Mechanism Unit
CONTENTS
Page Page
ORDER NO. MD0509368C0
A6

13 Replacement Parts List 100
13.1. CD Loading Mechanism Parts List 101
13.2. Electrical Parts List 102
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1 Mechanism Overview
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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
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2.2.1. Description of disc selection operation
Note: Check that the cam gear is in “HOME” position.
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.)
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2.3. Play/Stop operation
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.
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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
· 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:
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
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Condition Explanation
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
Note: * represent tray number (from 1 ~ 5)
· Logics of motor control:
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
Notes :
CW/CCW : Motor direction control (CW : clockwise, CCW : Anti-clockwise)
Plunger : Solenoid Control (H : ON = Activation)
· Cam gear in the mechanism use for opening/closing of trays and lifting a function gear to link 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
CW UD base move upwards direction 5→1 Stock →Play
CCW UD base move downwards direction 1→5Play →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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