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3 Disc Tray Changer
3DTC
Table of Contents
Warning - ESD ......................................................................2 Wiring....................................................................................3 Brief description ....................................................................4 Truth table ............................................................................6 Timing Diagram ...................................................................7 Repair Tips Replacing the CD Drive ...................................................11 Jammed carriage, blocked tray .......................................12 Replacing the gears ........................................................15 Exploded view.....................................................................20
ฉ Copyright
2001 Philips Consumer Electronics B.V. Eindhoven, The Netherlands
CLASS 1 LASER PRODUCT
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. Published by HB 0148 Service Audio Printed in The Netherlands Subject to modification
ฉ 3103 785 25140
2
WARNING
CHARGED CAPACITORS ON THE SERVO BOARD MAY DAMAGE THE CD DRIVE ELECTRONICS WHEN CONNECTING A NEW CDM MECHANISM. THATดS WHY, BESIDES THE SAFETY MEASURES LIKE ท SWITCH OFF POWER SUPPLY ท ESD PROTECTION ADDITIONAL ACTIONS MUST BE TAKEN BY THE REPAIR TECHNICIAN.
The following steps have to be done when replacing the CD mechanism: 1. Disconnect flexfoil from old CD drive 2. Put a paperclip over contacts of flexfoil to short-circuit the contacts (fig.1) 3. Remove old CD drive 4. Remove paperclip from flexfoil 5. Connect flexfoil to new CD drive 6. Remove ESD-protection (solder joint) from laserunit (see below) 7. Position new CD drive in its studs
fig.1
Attention: The laser diode of this CD drive is protected against ESD by a solder joint which shortcircuits the laserdiode to ground. For proper functionality of the CD drive this solder joint must be removed after connection the drive to the set.
3
WIRING Module
WIRING CD Drive
4
Brief description
On the next pages various actions of the 3 Disc Tray Changer are described with simplified drawings. 1. Initial state. After Power on the changer is in this position. The drawer closed Carriage #1 is in Play position Carriage #2 and #3 are in home position
2 3 1
Drawer Clamper Carriage
The Changer looks like
2. Tray open. The Drawer is moved out Carriage #2 and #3 remain in home position
2 3 1
Drawer Clamper Carriage
The Changer looks like
5 3. Carriage extra. This position is necessary to get access to the lower carriage. It is also used during disc change.
Carriage extra position
2 3 1
Drawer Clamper Carriage
The changer looks like
The various states are recognized by seven switches. For functions see truth table on next page. SW4&5
Location of switches
SW2&3
SW6
SW7
SW8
6
Truth Table
Register output / Switch Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Function Slider reverse recognition Slider forward recognition Drawer closed recognition No carriage under clamper Carriage #1 under clamper Carriage #2 under clamper Carriage #3 under clamper Carriage home recognition Carriage extra recognition SW SW SW SW SW SW SW 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 X X X X X X X X X
7
Timing Diagrams
1. Open #3 ACTION
press open #3
2 3 1
2 3 1 1
2 3
initial Carriage #2 to extra position Drawer opens
final prepare for next action
Carriage motor Drawer motor
CCW STOP CW CCW STOP CW SW 2 SW 3
duty cycle 50% (brake)
Recognition
Action
Switches
SW 4 SW 5 SW 6 SW 7 SW 8
Time 200ms/div
2. Close #3 ACTION
press close
2 3 1 1
2 3 1
2 3
initial Carriage #2 to home position Drawer closes
final prepare for next action
Carriage motor
CCW STOP CW CCW STOP CW SW 2 SW 3
duty cycle 50% (brake)
Action Recognition
Switches
Drawer motor
SW 4 SW 5 SW 6 SW 7 SW 8
Time 200ms/div
8 3. Select #2 ACTION
select #2
2 1 1 3
2 1
3 2
2 3 1
1
2 3
2 3
3 1 2
3 1
initial clamper up carriage#2 to play position clamper down
final
Carriage motor Drawer motor Switches
CCW STOP CW CCW STOP CW SW 2 SW 3 SW 4 SW 5 SW 6 SW 7 SW 8
Time 200ms/div
4. Select #1 ACTION
select #1
2 1 3 1 2 3
Recognition
Action
2 1
3 1 2
2
3 1
1
3
2 3 1
2 3
initial clamper up carriage#1 to play position clamper down
final
Carriage motor Drawer motor Switches
CCW STOP CW CCW STOP CW SW 2 SW 3 SW 4 SW 5 SW 6 SW 7 SW 8
Time 200ms/div
Recognition
Action
9
Load all discs
1. Power on. Initial state.
1
2 3 insert disc
2. Press open #2. Tray moves out. Load carriage #2.
2 3 1
3. Press open #3. Carriage #2 moves in extra position.
1
2 3
insert disc 2
4. Load carriage #3.
1
3
2
5. Press open #1. Tray closes.
3 1
6. Carriage #2 moves in home position.
1
2 3
7. Clamper moves to upper position. Carriage #1 moves to height of carriage #3.
1
2 3
1
8. Carriage #1 moves to height of carriage #2.
2 3
9. Carriage #3 moves below carriage #1.
1 3
2
10. Carriage #2 moves down.
1 3
2
11. Carriage #1 moves in home position.
3
1 2
12. Carriage #3 and clamper move down (in play position).
3
1 2 insert disc
13. Tray moves out. Load carriage #1.
3
1 2
14. Press close. Tray closes.
3
1 2
10
Change `backwards'
E.g. select #3 while playing #1.
Change `forwards'
E.g. select #2 while playing #1.
2 3 1 1
2 3
1
2 3
1
2 3
1
2 3
2 1
3
1 3
2
2 1
3
1 3
2 2
3 1
3
1 2
2
3 1
1 2 3 2
3 1
See also timing diagrams (page 8).
Additional hints:
Gears pos. 4 and pos. 5 are responsible for forward/backward movement of the carriages. Star Gears pos. ( are responsible for up/down movement of the carriages. Mis-aligned gears (pos. 4 & 5) result in jamming carriages. Wrong inserted carriages (e.g. #2 mixed up with #3) causes endless forward/backward changing of the loader module.
11
Repair Tips
Replacing the CD Drive
1. Dismantle top and side cover of set. 2. Loosen 4x screw (see picture 1). Remove metal cover of changer. 3. Connect mains and switch on the set. 4. Press Open/Close CD button Tray moves outside. 5. Disconnect mains. 6. Loosen 2x screw (see picture 2). Remove bracket with clamper. 7. Remove carriage above CD-drive. 8. Loosen 4x screw (see picture 3). Remove CD-drive. 9. Disconnect flex foil and short-circuit it (see page 2). 10. Desolder wires. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. Remove dampers pos. 57 and 58. Insert dampers into new CD-drive. Solder wires to new CD-drive (see page 3). Connect flexfoil. Remove solder joint on new CD-drive (see page 3). Position the new CD drive in its studs. Fix the drive - 4x screw (see picture 3). Insert carriage. Mount bracket with clamper - 2x screw (see picture 2). Mount metal cover of the loader unit - 4x screw (see picture 1). Connect mains Press Open/Close CD button Tray closed.
picture 1
picture 2
picture 3
12
Jammed carriage, blocked tray
If the tray canดt be opened via open close dismantle the top and side cover of the set and remove the metal cover of the loader unit as shown in picture 1. If the carriage is in a position as shown in picture 4, the complete loader unit is locked. In this state clamper A is in upper position and carriage B is jammed under the clamper. Problem : The tray cannot open as long as the clamper is in upper position and the clamper cannot move down because of the jammed carriage.
picture 4
The problem can only be fixed as follows
1. Loosen 2x screw (see picture 5). Remove bracket with clamper. 2. Shift lever (pin) to the left as shown in picture 6. This action releases the tray.
picture 5
picture 6
13
Jammed carriage, blocked tray (continued)
3. Shift lever (block) backwards as shown in picture 7 Tray moves approx. 1cm outside. 4. Pull out the tray manually. 5. Remove carriage above the CD-drive. WARNING: Donดt apply mechanical force to the tray. Bend carriage - as shown in picture 8 - to release guidings.
picture 7
picture 8
6. Turn pulley as shown in picture 9 to move next carriage over CD-drive. 7. If necessary repeat step 5 and 6 until all carriages are removed.
picture 9
14
Reassembling the tray
1. Insert carriage #1 above CD-drive. Attention: The 3 cartridges are different (see picture 10). 2. Mount clamper (2x screw - see picture 5). 3. Connect mains. Set initializes Clamper moves down. 4. Select CD 2 Clamper moves up Carriage #2 (not yet inserted) will be moved above CD-drive Carriage #1 moves back Clamper moves down. 5. While clamper moves down disconnect mains. 6. Open tray - using lever (block) as shown in picture 7. Lift clamper - using lever (pin) as shown in picture 11. 7. Insert carriage #2 above CD-drive. 8. Lower clamper, close tray, connect mains. Set initializes carriage #1 moves above CD-drive Clamper moves down. 9. Select CD 3. Clamper moves up carriage #3 (not yet inserted) will be moved above CD-drive carriage #1 moves back Clamper moves down. 10. While clamper moves down disconnect mains. 11. Open tray - using lever (block) as shown in picture 7. Lift clamper - using lever (pin) as shown in picture 11. 12. Insert carriage #3 above CD-drive. 13. Lower clamper, close tray, connect mains. Set initializes Carriage #1 moves above CD-drive Loader unit reassembled successfully.
picture 10
picture 11
Move lever to unlock clamper
15
Replacing the Gears (pos. 3 & 4)
1. Disassemble complete Loader unit. 2. Shift lever (block) backwards as shown in picture 7 Tray moves approx. 1cm outside. Pull out the tray manually. 3. Demount right side of tray (see picture 12). 4. Close tray (simply push inside). 5. Demount left side of tray (see picture 13). Lift right side as high as possible. Attention: The two gearwheels shown in detail A resp. detail B come loose easily!
picture 12
picture 13
Detail A
Detail B
picture 14
16
Replacing the Gears (continued)
6. Turn gearwheel A as shown in picture 15 carriage moves right. 7. Lift carriage as shown in picture 16 and remove it. 8. Turn gearwheel A in the other direction remaining carriage moves right. 9. Lift carriage as shown in picture 16 and remove it. 10. Turn round tray and align gear as shown in picture 17, detail C. 11. Fix the gear with a pin (e.g. a paperclip d=1mm) see detail B. 12. Loosen 4x screw as shown in picture 17, detail D.
picture 15
Detail D
picture 16
Detail C
picture 17
17
Replacing the Gears (continued)
13. Replace gear pos.3 and/or 4. Make sure that the new gear is aligned as shown in picture 17, detail C as well. To avoid damage of the switches when inserting the gear, use a strip of paper as shown in picture 18. 14. Fix gear with 4x screw (see picture17,D). 15. Check if gear is aligned as shown in picture 17 detail C.
Inserting the Carriages
16. Turning gear A as shown in picture 19 will move the upper and lower wheel of gear B alternately. Turn gear A until the lower wheel stops moving and upper one starts moving. 17. Insert right side of carriage #3 (= side with the toothrack) as shown in picture 20.
picture 18
picture 19
Detail B
picture 20
Detail A
18
Inserting the Carriages (continued)
18. Insert other side of carriage as shown in picture 21. 19. Turning gear A as shown in picture 19 will move carriage inside. After reaching the endposition the upper wheel (picture19 B) starts turning. 20. Insert carriage #2 as shown in picture 20 and 21. 21. Lift carriage #3 while turning gear A (see picture 22). 22. Lift clamper and insert carriage #1 above CD-drive. 23. Shift lever as shown in picture 23.
Assembling the Tray
24. Lift back side of tray as high as possible. Assemble tray starting at position 1 as shown in picture 24.
picture 21
picture 22
picture 23
picture 24
19
Assembling the Tray (continued)
25. 26. 27. 28. 29. Move tray outside (simply pull the tray). Align toothed wheel A as shown in picture 25. Snap in other side of tray as shown in picture 26. Move tray inside (simply push). Done.
Detail
picture 25
picture 26
19 23 12 115
3Disc Tray Changer Exploded view
62
19
119 118
119 119 118 75 115 19
A
3
118
56
118
2 72 121 34 68 19
A
18
127 11 63 32 33
54
38 121
35
20
53 41 52 57 120 4
MECHANICAL PARTS ญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญญ 3 4
50 57 58 60
113
9965 000 06538 9965 000 06539 12 19 48 9965 000 06540 9965 000 06541 9965 000 06542 49 9965 000 06543
ASSY HOLDER LEFT ASSY HOLDER RIGHT ASSY CARRIAGE 1 (TOP) ASSY GEAR STAR ASSY MOTOR CARRIAGE ASSY MOTOR DRAWER
39
47
40 37 43 72 58 77 51 59
85
36
25
53 54 57 58
9965 000 06544 9965 000 06545 9965 000 06546 9965 000 06547
27
BELT DRAWER BELT CARRIAGE DAMPER RUBBER REAR DAMPER RUBBER FRONT 59 9305 022 30103 CD DRIVE VAM2201/03 (1x SPEED)
1 113 31
29 28 121 30 26
24
59 59 62 63 71 72
9305 022 30203 8203 303 85780 9965 000 06548 9965 000 06549 4822 277 11652 9965 000 06550 3103 309 05250 3103 309 05260 3103 309 05270
CD DRIVE VAM2202/03 (2x SPEED) CD DRIVE VAM2204/03 (4x SPEED) ASSY CARRIAGE 2 (MIDDLE) ASSY CARRIAGE 3 (BOTTOM) SWITCH (SW6-SW8) SWITCH (SW2-SW5) 3DTC MECH. CMCJ-01-13 (1xSPEED) 3DTC MECH. CMCJ-01-14(2xSPEED) 3DTC MECH. CMCJ-01-15(4xSPEED) Complete Mechanic - CD Drive already included
123
49
71 48
3x
115
Exploded view 3DTC 2000 08 22