Panasonic SJ-MJ55GH, Service Manual

Page 1: ...ORDER No AD0211153C3 Portable MD Player SJ MJ55GH Colour S Silver Type SPECIFICATIONS Specifications ...

Page 2: ... 2V included rechargeable battery Battery DC 1 5V One LR6 AA UM 3 battery Dimensions WxHxD Cabinet dimensions 79 9x72 7x14 1 mm incl projecting parts 80 9x74 2x17 0 mm Weights 96 g with battery 69 g without battery Play time Approximate operating time in hours in hold mode at 25 C on a flat stable surface Battery type Play time Stereo LP2 LP4 Rechargeable 40 hours 53 hours 70 hours Panasonic alkal...

Page 3: ...Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law 1 Accessories Stereo earphones 1 pc L0BAB0000174 Wired remote control 1 pc N2QCBD000020 External battery case 1 pc K3ZZ00200038 Nickel metal hydride rechargeable battery 1 pc RFKFFAZ01EM1 Soft case 1 pc RFC0074 H Speaker Battery charger 1 pc L0EAAB000011 AC adaptor 1 pc N0JCBD000001 2 Precaution of Laser Diode ...

Page 4: ...p is an extremely high precision construction and must not be subjected to impact excessive vibration or other types of rough handling 2 In order to prevent static electricity damage to the laser diode use a short pin or similar tool to short the optical pickup s flexible circuit boards after they have been disconnected from the main circuit board as shown in Fig 1 3 Handle the flexible circuit bo...

Page 5: ...dy as shown in Fig 3 2 Work table grounding Put a conductive material sheet or steel sheet on the area where the traverse deck optical pickup is placed and ground the sheet as shown in Fig 4 Caution The static electricity of your clothes will not be grounded through the wrist strap So take care not to let your clothes touch the traverse deck optical pickup Fig 3 ...

Page 6: ... main components For reassembly after operation checks or replacement reverse the respective procedures Special reassembly procedures are described only when required After replacing the main components optical pickup or traverse motor etc of mechanism unit block change to the adjust mode and then perform the adjustments Laser power off set ROM RAM 5 1 Checking for the P C B ...

Page 7: ... Check the P C B as shown below ...

Page 8: ...5 2 Replacement for the intermediate cabinet Follow the Step1 Step3 of item 5 1 ...

Page 9: ...5 3 Replacement for the disk cover ass y and the link units L R Follow the Step1 Step3 of item 5 1 Follow the Step1 Step4 of item 5 2 ...

Page 10: ...5 4 Replacement for the traverse motor Follow the Step1 Step3 of item 5 1 ...

Page 11: ...5 5 Replacement for the optical pickup Follow the Step1 Step3 of item 5 1 Follow the Step1 Step5 of item 5 4 ...

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Page 13: ...le recordable disc fully recorded with music magneto optical disc 3 Laser power meter LE8010 or compatible meter 4 Remote controller Parts No N2QCBD000020 or Remote controller of SJ MJ88 etc Parts No RFEV025P SM 6 2 Laser power adjustment Off set automatic adjustment Playback only disc magneto optical disc automatic adjustment magnet 6 2 1 Enter the adjustment mode Note For use of MD cartridge typ...

Page 14: ...splayed on the LCD of remote controller After T0E is displayed select the desired adjustment item with the button or button of the remote controller If it is not displayed perform the procedures written above again In the display of T0E TFE shown above you must adjust T0E T1E T2E and T3E You must perform the adjustment by observing the order T0E T1E T2E T3E Note If it is going to perform T2E and T...

Page 15: ...o the laser power adjustment mode with the MD loaded Doing so may result in damage to the MD Laser diode in the optical pickup may be destroyed by the static electricity generated in your clothes or body Be especially careful with the static electricity 6 2 2 2 Adjustment Procedure 1 Have T0 indicated on display and move the optical pickup to the most inside only when a MD cartridge type laser pow...

Page 16: ...ller Specified range 600 W 10 Caution Proceeding on to the subsequent adjustment procedure with the read power exceeding over 660 W will result in damage to the optical pickup 6 Set the laser power with the key of the remote controller LP changes to LDOK in the LCD 7 Press the key of the remote controller LDOK changes to T0E on the LDC 8 Remove the laser power meter Laser power adjustment is finis...

Page 17: ...o the crevice between laser power meter and pull a card in the direction of an arrow 1 2 A stopper moves in the direction of an arrow 2 3 Move the shutter in the direction of an arrow 3 and the shutter opens Caution Please be sure to shut the shutter after the adjustment end Fig 9 ...

Page 18: ...If there is no abnormality FOK will be displayed 4 Pressing the key while FOK is displayed will return to the T1E display mode 6 2 4 Magneto optical disc automatically adjustment 1 Have T2E indicated on display and set the full recorded magneto optical disc Check to make sure the disc is properly seated 2 Press key of the remote controller The adjustment is started 3 During adjustment AADJ is disp...

Page 19: ... is no abnormality AOK will be displayed Note If it is displayed ONG check 7 Troubleshooting Guide in the order 4 Press key OOK or ONG changes to T3E 5 After the adjustment is finished remove the disc 6 2 6 How to get out the adjustment mode Remove the battery when you finish the adjustment 6 3 Checking the main unit s keys 1 Set the battery and connect the remote controller 2 Turn off the power a...

Page 20: ...d will change from to O 5 After all keys have been pressed and there is no abnormality E OOO will be displayed 6 Perform below voltage check about the keys come under if it is not displayed E OOO Main unit s keys Check points ON OFF IC201 48pin 0V 2 2V HOLD TP428 0V 2 2V VOL TP421 0V 2 2V VOL TP421 0 58V 2 2V TP421 1 13V 2 2V TP421 1 69V 2 2V Note Refer to 12 Printed Circuit Board Diagram for the ...

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Page 29: ...1 Need MN101C32GAG2 Needlessness Note When MN101C32GAG1 is mounted please exchange for MN101C32GAG2 8 2 Replacement of SYSTEMCONTROL IC IC201 Exchange only SYSTEMCONTROL IC IC201 Caution After replacing either IC201 or IC202 please be sure to perform the laser power adjustment Off set automatic adjustment and Playback only disc magneto opticaldisc automatic adjustment Refer to 6 Measurements and A...

Page 30: ...h SX206 Play stop switch Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester high impedance with the chassis taken as standard Therefore there may exist some errors in the voltage values depending on theinternal impedance of the DC circuit tester No mark MD STOP MD play 1kHz L R 0dB The play of MD is performed in Jitter measurement T4E mode Re...

Page 31: ...lock Diagram 14 Terminal Function of IC s 14 1 IC1 C1BB00000728 RF AMP Pin No Mark I O Division Function 1 NC Not used open 2 RVCC I Power supply input terminal 3 RF1 I RF 1 signal input terminal 4 RF2 I RF 2 signal input terminal 5 VCC I Power supply input terminal 6 F1 I F 1 signal input terminal 7 F2 I F 2 signal input terminal 8 A I A signal input terminal 9 B I B signal input terminal 10 C I ...

Page 32: ...terminal 23 DD O D signal dark side detection amplified output terminal 24 BB O B signal IV conversion output terminal 25 AA O A signal IV conversion output terminal 26 FF2 O F2 signal IV conversion output terminal 27 FF1 O F1 signal IV conversion output terminal 28 RGND GND terminal 29 BOTTOM RF bottom signal output terminal Not used open 30 PEAK O RF peak signal output terminal 31 HFL O Track de...

Page 33: ...ent charge pump output terminal 9 VCVDD Power supply input terminal for VCEC 10 FR I VCEC oscillation frequency bias resistor input terminal Connected to GND through reistor 11 ISET I VCEC current charge pump bias resistor input terminal Connected to GND through reistor 12 VCVSS GND terminal 13 AVDD1 Power supply input terminal 14 PEAK I Peak signal input terminal 15 FF1 I Focus error signal input...

Page 34: ...ply input terminal 32 38 NC Not used open 39 VCC2 O Power supply output terminal 40 43 NC Not used open 44 PCK Not used open 45 VCC2 I Power supply input terminal 46 VSS GND terminal 47 DEFECT Not used open 48 51 NC Not used open 52 VSS GND terminal 53 56 NC Not used open 57 TEST3 I Test terminal Connected to power supply 58 SPPWMF O Spindle PMW output terminal 59 SPPWMR O Spindle PMW output termi...

Page 35: ...73 D4M O CLV servo clock judgement output terminal Not used open 74 FOK O Focus OK signal output terminal 75 CL I CPU I F data transfer clock input terminal 76 CE I CPU I F chip enable signal input terminal 77 DI I CPU I F data input terminal 78 DO O CPU I F data output terminal 79 WRQB O CPU interrupt signal output terminal 80 INTB O CPU I F interrupt signal output terminal 81 DPVCC2 Power supply...

Page 36: ...al audio output terminal Not used open 93 105 NC Not used open 106 VSS Connected to GND 107 VCC2 I Power supply input terminal 108 TEST2 I Test terminal Connected to power supply 109 114 NC Not used open 115 SMON3 I Monitor signal output terminal Not used open 116 SMON2 O Monitor signal output terminal 117 SMON1 O Monitor signal output terminal 118 SMON0 Monitor signal output terminal Not used ope...

Page 37: ...System clock output terminal F 6MHz 13 OSC1 I System clock input terminal F 6MHz 14 VSS Connected to GND 15 XI Sub clock input terminal Not used connected to GND 16 XO Sub clock output terminal Not used open 17 MMOD Memory mode switching input terminal Not used connected to GND 18 REM_DATA O LCD driver data output terminal 19 LINK_IN I LINK serial data input terminal 20 Not used open 21 Not used o...

Page 38: ...ose 35 Not used open 36 SSDW O IC101 I F write data output terminal 37 SSDR I IC101 I F read data input terminal 38 SSCLK O IC101 I F clock output terminal 39 SELAD O IC101 I F address select output terminal 40 RESET B O IC101 I F reset output terminal 41 ZDTCL I IC101 I F monitor signal input terminal 42 ZDTCR I IC101 I F monitor signal input terminal 43 Not used open 44 BATT_SW O Battery control...

Page 39: ...EP_CLK O EEP ROM clock output terminal 60 EEP_CS O EEP ROM chip select output terminal 61 LSI_ STATUS Not used open 62 ST_READ Not used open 63 GHSW O Pit Group gain switching signal output terminal 64 RFCONT O RF amp power supply control output terminal L ON 65 P CONT O Power supply control output terminal H Power OFF L Power ON 66 NC Not used open 67 MODEL 1 I Model switching input terminal 1 68...

Page 40: ...rol output terminal 78LED_CNT1_G O GREEN LED VOL control output terminal 80 ADJ_OK Not used open 14 4 IC301 C0GBZ000009 FOCUS TRACKING COIL TRAVERSE MOTOR DRIVE SPINDLE MOTOR DRIVE ROTARY DETECTOR Pin No Mark I O Division Function 1 IN1R I H bridge 1 logic reverse input terminal 2 CP1 O Charge pump gain puls output terminal 3 CPC1 I Charge pump gain input terminal 4 CP2 O Charge pump gain puls out...

Page 41: ...erminal 17 SWCO O Sled driver block position detection comparator output terminal 18 SWO O 3 phase sled W output terminal 19 SCOM I Sled driver block position detection comparator input terminal 20 WOUT O 3 phase spindle W output terminal 21 VOUT O 3 phase spindle V output terminal 22 COM I Spindle motor COM point connect input terminal 23 UOUT O 3 phase spindle U output terminal 24 FG O FG pulse ...

Page 42: ... through capacitor 36 RMAX VCO highest frequency setting terminal Connected to GND through resistor 37 IN2R I H bridge 2 logic reverse input terminal 38 IN2F I H bridge 2 logic forward input terminal 39 MUTE I H bridge 1 2 and 3 phase sled mute input terminal 40 VS2 I H bridge 2 motor power supply input terminal 41 OUT2F O H bridge 2 forward output terminal 42 OUT2R O H bridge 2 reverse output ter...

Page 43: ...g to Battery Carrying Case to be used for protection of Rechargeable Battery Ass y from shorting Replacement Parts Rechargeable Battery Ass y RFKFFAZ01EM1 supplied will be provided with Battery Carrying Case RFA0475 Q No replacement parts will be supplied for Rechargeable Battery Ass y without Battery Carrying Case Replacement parts will be supplied for Battery Carrying Case RFA0475 Q without Rech...

Page 44: ...d parts shown in the parts list Warning This product uses a laser diode Refer to caution statements Capacity values are in microfarads uF unless specified otherwise P Pico farads pF F Farads F Resistance values are in ohms unless specified otherwise 1K 1 000 OHM 1M 1 000K OHM The marking RTL indicates that the Retention Time is limited for this item After the discontinuation of this assembly in pr...

Page 45: ...RY COVER 1 20 RMQ1205 SPACER 1 A1 K3ZZ00200038 EXTERNAL BATTERY CASE 1 A2 L0BAB0000174 STEREO EARPHONES 1 A3 L0EAAB000011 SPEAKER BATTERY CHARGER 1 A4 N0JCBD000001 AC ADAPTOR 1 A5 N2QCBD000020 WIRED REMOTE CONTROLLER 1 A5 1 RFKY0010 REMOCON PANLE ASS Y 1 A5 2 RFKY0004 REMOCON CLIP ASS Y 1 A6 RFKFFAZ01EM1 RECHARGE BATTERY ASS Y 1 A6 1 RFA0475 Q RECHARGE BATT CASE 1 A7 RFC0074 H SOFT CASE 1 A8 RQT66...

Page 46: ...C108 ECUE1H102KBQ 50V 1000P 1 F1G1H102A457 ...

Page 47: ...1 C310 F5A422240001 4V 0 22U 1 C311 F1G0J224A004 6 3V 0 22U 1 C330 ECJ1VB0J105K 6 3V 1U 1 C401 F3Z0G107A003 4V 100U 1 C402 F3E0G226A002 4V 22U 1 C403 F1G1C103A044 16V 0 01U 1 C404 F3G0G2270001 4V 220U 1 C405 F3Z0J106A001 6 3V 10U 1 C406 07 F1J0J4750010 6 3V 4 7U 2 C410 ECUENA104KBQ 10V 0 1U 1 F1G1A104A014 C411 F1G1C103A044 16V 0 01U 1 C412 ECUENA104KBQ 10V 0 1U 1 F1G1A104A014 C413 F3F1A226A008 10V...

Page 48: ...000001 DIODE 2 D406 MA2YD2100L DIODE 1 IC1 C1BB00000728 IC 1 IC101 C1BB00000729 IC 1 IC201 MN101C32GAG2 IC 1 IC202 C3EBDG000039 IC 1 IC203 C0EBC0000032 IC 1 IC301 C0GBZ0000009 IC 1 IC401 XC6367A151MR IC 1 C0DBAFZ00012 IC402 C0DBAFZ00021 IC 1 IC403 C0DBAGZ00016 IC 1 IC404 B1KBB0000006 IC 1 IC501 C1BB00000720 IC 1 IC601 C1BB00000730 IC 1 IC602 NJU7015RTE1 IC 1 C0ABHA000012 IC801 02 NJM2135RTE1 IC 2 ...

Page 49: ...03 ERJ2GEJ682X 1 4W 6 8K 1 ERJ2RMJ682X R104 ERJ2GEJ473X 1 4W 47K 1 ERJ2RMJ473X R106 ERJ2GEJ105 1 4W 1M 1 D0GA105JA001 R107 ERJ2GE0R00X 1 4W 0 1 D0YAR0000003 R108 ERJ2GEJ682X 1 4W 6 8K 1 ERJ2RMJ682X R109 ERJ2GEJ332X 1 4W 3 3K 1 ERJ2RMJ332X R112 ERJ2GEJ224 1 4W 220K 1 R113 ERJ2GEJ103 1 4W 10K 1 R115 ERJ2GEJ393X 1 4W 39K 1 ERJ2RMJ393X R116 ERJ2GEJ103 1 4W 10K 1 R117 ERJ2GEJ101 1 4W 100 1 R120 ERJ2GEJ...

Page 50: ... 1 R509 ERJ2GEJ221 1 4W 220 1 R551 D1H447420001 470K 1 R553 ERJ2GEJ474X 1 4W 470K 1 ERJ2RMJ474X R602 ERJ2GEJ183 1 4W 18K 1 R603 ERJ2GEJ682X 1 4W 6 8K 1 ERJ2RMJ682X R604 ERJ2GEJ104 1 4W 100K 1 R605 D1H84734A024 47K 1 R606 ERJ2GEJ470 1 4W 47 1 R607 D1H427320001 27K 1 R608 ERJ2GEJ273X 1 4W 27K 1 ERJ2RMJ273X R609 D1H422320002 22K 1 R610 D1H84734A024 47K 1 R611 ERJ2GEJ273X 1 4W 27K 1 ERJ2RMJ273X R621 D...

Page 51: ...19 Packaging ...

Page 52: ...20 Schematic Diagram for Printing with A4 Size H0211TN HH ...