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Panasonic BRS1D, Service Manual

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Panasonic BRS1D Service Manual Download Page 31

31

5.2.

FUNCTIONS Description

5.3.

AGING MODE Description 

Function Name 

Function Description 

Tray - Open

When press [LD_OPEN], LD Motor drive until detect LOAD-SW = LO

Tray - Close

When press [LD_CLOSE], LD Motor drive until detect LOAD-SW = LC 

Trv - Forward

When press [TRV FW], Trv Motor drive until detect INNER-SW = L

Trv - Reverse

When press [TRV REV], Trv Motor drive until detect OUTER-SW = L

LD-Motor -FW

When press [LD-FWD] and hold, LD Motor turns CCW until button release.

LD-Motor -Rev

When press [LD-REV] and hold, LD Motor turns CCW until button release.

RESET 

When press [RESET], the mechanism will go through the INITIALIZATION process.

Retry Mode

When press [Retry Mode]. The tray retry function will activated

Aging Mode 

Aging Mode Description 

Loading Cycle 

When press [Load Cycle], mechanism will be in continuos mode for 
tray open & close operation. 

Traverse Cycle 

When press [Trv Cycle], mechanism will be in continuos mode for 
OPU forward & reverse operation.

Combine Cycle 

When press [Combi Cycle], mechanism will carry out full operation from 
OPU at outer position - Tray fully opened & vice versa in continuos mode.

** The above aging mode will stop when user press [RESET] or switch OFF power on this board.

Summary of Contents for BRS1D

Page 1: ...Service caution based on Legal restrictions 6 2 4 Handling Precaution for Traverse Unit 7 3 Mechanism Operation 9 3 1 Close Open Operation 9 3 2 Open Close Operation 10 3 3 Initialization 11 3 4 Fail Safe Mode 13 4 Disassembly and Assembly Instructions 14 4 1 Flow Chart 15 4 2 Disassembling Procedures 16 4 3 Assembly Procedure 21 5 Reliability 30 5 1 Diagram of Reliability P C B 30 5 2 FUNCTIONS D...

Page 2: ...2 1 Mechanism Overview BRS1D BRS1 mechanism is a single tray mechanism used for CD DVD models 1 1 Mecha Chassis Assembly Tray Traverse Unit ...

Page 3: ...3 1 2 Traverse Motor ...

Page 4: ...e of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ES devices 4 Use only an anti static solder remover device Some solder removal devices not classified as anti static ESD protected can generate electrical charge sufficient to damage ES devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove ...

Page 5: ... a long time ACHTUNG Dieses Produkt enthält eine Laserdiode Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheitadg estrahit Wellenlänge 655 nm DVD 790 nm CD Maximale Strahlungsleistung der Lasereinheit 100 μW VDE Die Strahlung an der Lasereinheit ist ungefährlich wenn folgende Punkte beachtet werden 1 Die Lasereinheit nicht zerlegen da die Strahlung an der freigelegten ...

Page 6: ...is used Definition The letter of PbF is printed on the PCB using the lead free solder To put lead free solder it should be well molten and mixed with the original lead free solder Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC Since the melting point of the lead free solder is higher than that of the normal lead solder it takes the longer time to melt the lead...

Page 7: ... Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode 1 Do not give a considerable shock to the optical pickup unit as it has an extremely high precise structure 2 To prevent the laser diode from the electrostatic discharge damage the flexible cable of the optical pickup unit removed should be short circuited with a short pin or a clip 3 The fle...

Page 8: ...n the working environment Proceed servicing works under the working environment where grounding works is completed 2 4 2 1 Worktable grounding 1 Put a conductive material sheet or iron sheet on the area where the optical pickup is placed and ground the sheet 2 4 2 2 Human body grounding 1 Use the anti static wrist strap to discharge the static electricity form your body Figure 2 Figure 2 ...

Page 9: ...en SW Loading Motor state Close SW ON stopper Open SW ON stopper T S P Tray 51 6 55 135 49 9 41 7 R4 R3 7 71 0 0 R8 R4 R3 2 1 38 6 9 2 31 9 129 2 31 1 126 9 R8 45 R3 30 1 132 Reverse brake Short brake H L H L CW CCW TT center TT center Front boss 33 4 T S P Rack engage Tray Rack engage 2 6 9 ...

Page 10: ...Open SW Loading Motor state Close SW ON stopper Open SW ON stopper T S P Tray 51 6 55 135 49 9 41 7 7 71 0 0 2 1 38 6 8 6 31 9 129 2 31 1 126 9 30 1 132 H L H L CW CCW TT center TT center Front boss 33 8 T S P Rack engage Tray Rack engage 2 R3 R8 45 R3 6 8 Short brake ...

Page 11: ...Table 1 for the initialization process 3 3 1 When there is no Initialization Condition for Initialization Processing Table 1 LOAD SW LD MOTOR INNER SW TRV MOTOR LC H CCW LO CCW H CCW LC L CW LO CCW L CW Main Consideration Condition 2 Condition 1 Initialization Decision Processing No need initialization Backup Memory cleared N Y EXIT INNER SW L LOAD SW LC N Y EXIT Initialization Processing ...

Page 12: ...12 3 3 2 When there is Initialization Initialization Processing INNER SW L N Y TRV MOTOR CCW TRV MOTOR CW INNER SW H N Y TRV MOTOR CCW INNER SW L N Y TRV MOTOR Brake EXIT ...

Page 13: ...position Locked at Motor CCW condition in the case motor can turn CW Moror CCW for 5sec Time out Motor CW to Open position Locked at Motor CCW condition in the case motor can not turn CW Moror CCW for 5sec TO Motor CW for 5sec TO Loop ERROR stop at 4th TO Locked at Motor CW condition in the case motor can turn CCW Moror CW for 5sec Time out Motor CCW to Close position Locked at Motor CW condition ...

Page 14: ...with care as there may be chassis components with sharp edges Avoid touching heatsinks due to its high temperature after prolong use See caution as described below During disassembly and assembly please ensure proper service tools equipments or jigs is being used During replacement of component parts please refer to the section of Replacement Parts List as described in the ser vice manual Select i...

Page 15: ...15 4 1 Flow Chart 4 1 1 Disassembly flow chart Below describes the disassembly flow for the mechanism 4 1 2 Assembly flow chart Below describes the assembly flow for the mechanism ...

Page 16: ...ing Precaution for Traverse Unit to prevent static damage to the Optical Pickup unit 4 2 1 Replacement of Tray Step 1 Use a pin to Slide the Traverse Slide Plate until it come to a stop Step 2 Slide the tray out fully Step 3 Release the catches remove the tray ...

Page 17: ...traverse unit needs replacement 2 Please note that appropriate actions need to be taken to prevent static damage Step 1 Release the guide as shown slide the Traverse Slide Plate to the end Step 2 Release the 24P FFC from the slot Step 3 Lift the Traverse Unit by approximately 45 Step 4 Slide out the traverse unit as arrow shown ...

Page 18: ... Unit 4 2 3 Replacement of Traverse Slide Plate Refer to Replacement of Tray Refer to Replacement of Traverse Unit Step 1 Pull forward catches as shown to release Traverse Slide Plate Step 2 Remove the Traverse Slide Plate in order of sequences 1 to 2 as shown ...

Page 19: ...o Replacement of Traverse Slide Plate Disassembly of Belt Step 1 Remove the Belt as shown Disassembly of Pulley Gear Step 2 Use a screwdriver to release the catches and push down the Pulley Gear in order of sequences 1 to 2 Step 3 Remove the Pulley Gear as shown Disassembly of Driver Gear Step 4 Remove the Driver Gear as shown ...

Page 20: ...o Disassembly of Belt Step 1 Desolder pins of the Wires on the solder side of Loading P C B Step 2 Release Red and Black Wires from the slots Step 3 Remove 1 screw Step 4 Release the FFC from the slot Step 5 Release the FFC from the hole of Mecha Chassis Step 6 Release the catch and use a pin to lift up the Loading P C B as shown Step 7 Remove Loading P C B ...

Page 21: ...of Traverse Slide Plate Refer to Disassembly of Belt Follow the Step 1 of item 4 2 5 Step 1 Release catches as shown Step 2 Remove the Loading Motor as shown 4 3 Assembly Procedure 4 3 1 Assembling of Loading Motor Step 1 Insert the Loading Motor as shown Caution Ensure Loading Motor wire is align with Mecha Chassis wire slot ...

Page 22: ...side of Loading P C B Step 4 Dressed the wire as shown 4 3 2 Assembling of Loading P C B Step 1 Insert the FFC through the hole of Mecha Chassis Step 2 Slot the Loading P C B into slots Caution Ensure that the Loading P C B is properly seated onto the 2 locators Step 3 Press down the Loading P C B a click sound is heard when the Loading P C B is fully catched ...

Page 23: ...23 Step 4 Solder pins of the Wires on the solder side of Loading P C B Step 5 Dressed the wire as shown Step 6 Fix 1 screw Step 7 Dressed the wire in the slot ...

Page 24: ...embling of Driver Gear Pulley Gear Belt Step 1 Install the Driver Gear into the guide as shown Step 2 Install the Pulley Gear into the slot as shown press down until hear a click sound is heard Step 3 Install Belt ...

Page 25: ...ep 1 Place the Traverse Slide Plate into the Mecha Chassis as shown Step 2 Slide the Traverse Slide Plate to the end as shown flip over the Mecha Chassis Step 3 Press the Traverse Slide Plate and make sure it is fully catched onto the Mecha Chassis ...

Page 26: ...26 4 3 5 Assembling of Traverse Unit Step 1 Release the guide as shown slide the Traverse Slide Plate to the end Step 2 Slot the Traverse unit at approximately 45 into the mecha chassis as arrow shown ...

Page 27: ...Traverse Unit seated properly onto the Groove Step 4 Slide Traverse Slide Plate to lock the Traverse Unit as shown Step 5 Slot the FFC onto the slot Caution Ensure that the FFC are properly inserted into the slots as shown ...

Page 28: ...Assembling of Tray Step 1 Slide the Traverse Slide Plate unit it stop at the Guide Step 2 Slot the Tray into the guides as Picture shown Step 3 Ensure the guides is align with the groove when sliding the tray in ...

Page 29: ...29 Step 4 Slide the tray in fully ...

Page 30: ...30 5 Reliability Purpose To test the BRS1 mechanism unit operation by using the Reliability P C B before installation into the main unit 5 1 Diagram of Reliability P C B ...

Page 31: ... and hold LD Motor turns CCW until button release RESET When press RESET the mechanism will go through the INITIALIZATION process Retry Mode When press Retry Mode The tray retry function will activated Aging Mode Aging Mode Description Loading Cycle When press Load Cycle mechanism will be in continuos mode for tray open close operation Traverse Cycle When press Trv Cycle mechanism will be in conti...

Page 32: ...32 5 4 Setup Connection Below diagram shows the set up necessary to carry out the reliability of mechanism ...

Page 33: ...33 5 4 1 Location of Outer Switch Refer following for the suggested location for the mounting of the outer switch Part No K0L1BA000158 ...

Page 34: ...sition Trv REV Normal Operation TRV motor turns CW and OPU Outer LC H L stops when OUTER SW Signal change from H L position LD FW Manual mode LD motor turns CW and Manual mode stops when user release button Trv motor FW LD REV Manual mode LD motor turns CCW and Manual mode stops when user release button Trv motor Rev Combi Aging Mode 1 Mechanism in continuous cycle mode of combination between Mode...

Page 35: ...tialization Press LD Open LOAD SW LO N Y LD MOTOR CW EXIT Tact Sw H LO Press Trv FW INNER SW H N Y TRV MOTOR CW EXIT TRV MOTOR CCW INNER SW L N Y Tact Sw H L Press Trv Rev OUTER SW L N Y TRV MOTOR CW EXIT Tact Sw H L Press LD Close LOAD SW LC N Y LD MOTOR CCW EXIT Tact Sw H LC ...

Page 36: ...LOAD SW LC N Y TRV MOTOR CW OUTER SW L N Y COUNTER CNT CNT 1 Press Load LOAD SW LO N Y LD MOTOR CW Tact Sw H L LD MOTOR CCW LOAD SW LC N Y COUNTER CNT CNT 1 Press Trv OUTER SW L N Y TRV MOTOR CW Tact Sw H L TRV MOTOR CCW INNER SW L N Y COUNTER CNT CNT 1 TRV MOTOR CCW INNER SW L Y ...

Page 37: ... page of spec for initialization process Tact Sw H L Press LD FW Tact Sw H L long press LD MOTOR CW Release FW key L EXIT Y N LOAD SW LO N Press LD Rev Tact Sw H L long press LD MOTOR CCW Release Rev key EXIT Y N OUTER SW L N Y ...

Page 38: ...38 5 6 P C B Checking 5 6 1 Traverse P C B Checking 5 6 2 Loading P C B Checking ...

Page 39: ... B B B B B B A A A A A A A A 310 309 1 309 308 BACK VIEW SIDE VIEW SIDE VIEW SIDE VIEW SIDE VIEW TOP VIEW BOTTOM VIEW 307 306 305 FRONT VIEW BACK VIEW 304 SIDE VIEW TOP VIEW 303 302 TRAVERSE ASS Y NOTE PART IS NOT SUPPLIED a a HANARL GREASE VZG0282 VZG0363 PART NUMBER A B 1 2 3 4 5 6 7 8 9 A B C D E F G H 10 11 12 13 BRS1D DVD LOADING MECHANISM DRAWINGS ...

Page 40: ...40 ...

Page 41: ...rks BRS1 MECHANISM 302 RDG0650 DRIVE GEAR 1 303 RDG0651 PULLEY GEAR 1 304 RMM0304 TRAVERSE SLIDE PLATE 1 305 RXQ1949 LOADING MOTOR ASS Y 1 306 VMG1720 BELT 1 307 RXQ1899 TRAY ASS Y 1 308 RFKJMCD5601A MECHA CHASSIS ASS Y 1 309 RFKB4676A LOADING P C B 1 309 1 K0L1CB000004 SW LOADING 1 310 VHD1224 1 SCREW 1 ...

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