Sony MDR NC50 Service Manual Download Page 6

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MDR-NC50

2-5. POSITION OF LEAD WIRES

– MR board –

– ML board –

BATT

NATURAL

MIC102

RED

RV101

SP101

GREEN

RED

NATURAL

RED

BLACK

RED

sheet (housing)

sheet
(housing)

LED

BLACK

MIC101

NATURAL

RED

NATURAL

RV102

RED

L/R transition
cord

jack
(small type)

MIC2

RED

NATURAL

MIC1

RV1

RED

NATURAL

SP1

L/R transition
cord

RED

button monitor

BLACK

NATURAL

GREEN

RED

GREEN

NATURAL

RV2

RED

NATURAL

SW transition
cord

2-6. L/R TRANSITION CORD LOCATION

head band assy

guide slider (L)/(R)

hanger (L)/(R)

L/R transition cord

L/R transition cord is inserted
in the slot inside a hanger.

Summary of Contents for MDR NC50

Page 1: ... and specifications are subject to change without notice Battery Sony alkaline LR03 AM 4 N size AAA battery Sony manganese R03 UM 4 NU size AAA battery Approx hours 1 30 hours 2 15 hours 2 Battery life 1 1 kHz 1 mW 1 mW input 2 Time stated above may vary depending on the temperature or conditions of use When to replace the battery Replace the battery with a new one when the POWER indicator dims Th...

Page 2: ...L R Transition Cord Location 6 2 7 Position Of Lead Wires At Front Plate L R Sub Assy 7 3 ELECTRICAL ADJUSTMENT 8 4 DIAGRAMS 9 4 1 Block Diagram 11 4 2 Printed Wiring Board L CH Board 12 4 3 Printed Wiring Boards R CH Board 13 4 4 Schematic Diagram 14 5 EXPLODED VIEWS 5 1 Overall Section 15 5 2 Housing L Section 16 5 3 Housing R Section 17 6 ELECTRICAL PARTS LIST 18 ...

Page 3: ...ptor can be connected to dual and stereo mini jacks Do not use the headphones when use of electronic equipment is prohibited or when use of personal headphones for in flight music services is prohibited If you have any questions or problems concerning the system that are not covered in this manual please consult the nearest Sony dealer L R monitor microphone MONITOR switch Except Tourist Tourist o...

Page 4: ...NAMENTAL CAP L R Page 5 2 3 MR BOARD Page 5 Note Follow the disassembly procedure in the numerical order given 2 2 ML BOARD qd Remove thirteen solders 2 two screws B2 6 1 screen 3 two screws B2 6 4 front plate L assy 5 packing housing qg ML board 0 claw qa claw 9 Remove the ring L block in the direction of arrow qs button monitor 6 three screws B2 6 7 sheet housing 8 claw qf claw ...

Page 5: ...6 1 screen 2 two screws B2 6 4 front plate R assy 7 screw B2 6 q two claws 9 Remove thirteen solders 2 4 ORNAMENTAL CAP L R 3 ornamental cap R Take care not to break the claw when mounting or demounting the ornamental cap L R 3 ornamental cap L 1 claw 1 claw 2 ring R 2 ring L 1 claw 1 claw 1 claw 1 claw ...

Page 6: ...TURAL RED NATURAL RV102 RED L R transition cord jack small type MIC2 RED NATURAL MIC1 RV1 RED NATURAL SP1 L R transition cord RED button monitor BLACK NATURAL GREEN RED GREEN NATURAL RV2 RED NATURAL SW transition cord 2 6 L R TRANSITION CORD LOCATION head band assy guide slider L R hanger L R L R transition cord L R transition cord is inserted in the slot inside a hanger ...

Page 7: ...7 MDR NC50 2 7 POSITION OF LEAD WIRES AT FRONT PLATE L R SUB ASSY front panel sub assy R MIC102 SP101 MR board front plate sub assy L MIC2 SP1 MIC2 SP1 ML board ...

Page 8: ...fter adjustment push and detach the ear receivers to and from your ears and use the ear receivers at the position a little away from your ears to check that a peep howling does not occur If a howling occurred rotate the RV2 L CH or RV102 R CH counterclockwise to reduce the volume As a result of the reduced volume on either side RV2 or RV102 if you feel that the left and right balance is disordered...

Page 9: ...normal production toler ances Circled numbers refer to waveform Signal path F Audio signal power off J Audio signal power on N Monitor Note on Printed Wiring Boards X parts extracted from the component side Y parts extracted from the conductor side Pattern from the side which enables seeing The other layer s pattens are not indicated Waveform 1 ML Board IC52 5 EXT MR Board IC152 5 EXT 1 V DIV 5 µs...

Page 10: ...10 MDR NC50 MEMO ...

Page 11: ...ER MIC1 MONITOR RV2 VOLUME POWER AMP IC6 SIGNAL PATH AUDIO POWER ON AUDIO POWER OFF MONITOR SWITCH Q101 102 NOISE CANCEL VOLUME R MIC AMP IC102 BUFFER IC103 BUFFER IC104 MONITOR SWITCH IC105 B 1V R B 2V L SP101 R CH RV101 MIC102 NOISE DETECT MIC101 MONITOR RV102 VOLUME POWER AMP IC106 DRY BATTERY SIZE AAA IEC DESIGNATION R03 1PC 1 5V 1V REGULATOR IC101 B 1V R B 1 5V R B SWITCH Q154 155 LED DRIVE Q...

Page 12: ... Q2 R46 D51 C61 C60 C56 R39 C57 R3 R26 Q1 R61 C35 C33 C24 C16 C13 C40 C41 C43 C58 R41 R55 R54 R56 C59 C37 C45 C42 R62 R63 R64 C11 C4 C46 C47 R65 C63 JW2 C31 C12 R68 C39 IC6 IC4 IC5 IC1 IC2 IC52 IC3 SP1 L CH BLK RED J1 INPUT MIC1 MONITOR NATURAL RED MIC2 NOISE DETECT NATURAL RED GRN RED 3 1 2 4 RED NATURAL NATURAL BLK GRN S1 MONITOR 1 864 609 12 12 1 864 609 12 12 SIDE A ML BOARD SIDE B ML BOARD 1 ...

Page 13: ... C161 C160 C156 C155 R152 R153 R103 Q151 R151 C153 C158 R126 Q101 R155 C133 C124 C116 C113 C159 C137 R163 R164 C111 C146 C147 C157 C131 C112 R166 C165 C163 R165 C120 R168 C118 R123 R125 R124 R122 C119 C117 JW102 IC104 IC102 IC103 IC106 IC101 IC152 IC151 ML BOARD A S301 RED RED 1 2 OFF ON POWER POWER D201 GRN 3 1 2 4 NATURAL RED 2 RED 1 RED BLK MIC102 NOISE DETECT NATURAL RED MIC101 MONITOR NATURAL...

Page 14: ...105 0 047 1000p 0 0022 0 0022 10k 470 2SC2412K 2 2 100k 180k 33p 220k 220 4V 0 01 1 1 10k 10k 10k 0 1 16k 3 3k 16k 0 022 0 01 100k 0 1 4 7k 330 0 1 XC9103D091MR 220 4V 4 7 RB161M 20TR 0 01 220 10k 100k 2SB1690K UMW1N TR 100 0 0015 39k 0 1 IMX9 IMX9 0 1 1k 1k 1k 1k 2 2k 2 2 10k 10k LM4916LDX NOP 47k 47k 220k 4 7 0 1 1 22k 22k 4 7 4 7 0 033 SN74LVC1G3157 2 2k 0 022 10k 0 1 5k 0 047 100k 0 047 0 1 1 ...

Page 15: ... 01 GUIDE SLIDER L 13 2 318 935 01 HANGER L 14 2 318 948 01 ORNAMENTAL CAP L 15 2 190 702 02 PAD EAR 16 X 2025 449 1 SWIVEL ASSY 17 2 547 581 01 HIMERON HOUSING 5 1 OVERALL SECTION Items marked are not stocked since they are seldom required for routine service Some delay should be anticipated when ordering these items The mechanical parts with no reference number in the exploded views are not supp...

Page 16: ...PLETE 57 2 318 963 01 BUTTON MONITOR 58 2 548 817 01 SHEET DRIVER 59 2 318 950 01 HOUSING L 60 2 547 578 01 SHEET HOUSING C1 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C4 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V J1 1 794 152 11 JACK SMALL TYPE INPUT MIC1 1 542 270 11 MICROPHONE ELECTRET CONDENSER MONITOR MIC2 1 542 270 11 MICROPHONE ELECTRET CONDENSER NOISE DETECT SP1 1 542 429 11 DRIVER 040F018 L c...

Page 17: ... 318 962 01 SWITCH POWER 111 2 318 964 01 PACKING HOUSING 112 X 2024 715 1 PLATE R SUB ASSY FRONT 113 2 348 232 01 SCREEN 114 2 318 951 01 HOUSING R 115 2 548 817 01 SHEET DRIVER 116 2 547 578 01 SHEET HOUSING C101 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C104 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V MIC101 1 542 270 11 MICROPHONE ELECTRET CONDENSER MONITOR MIC102 1 542 270 11 MICROPHONE ELECTRET ...

Page 18: ...1 100 507 91 CERAMIC CHIP 4 7uF 20 6 3V C33 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C35 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C36 1 164 227 11 CERAMIC CHIP 0 022uF 10 25V C37 1 165 884 11 CERAMIC CHIP 2 2uF 10 6 3V C38 1 104 851 11 TANTALUM CHIP 10uF 20 10V C39 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C40 1 100 507 91 CERAMIC CHIP 4 7uF 20 6 3V C41 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C42 1 125 8...

Page 19: ...CAPACITOR C105 1 165 176 11 CERAMIC CHIP 0 047uF 10 16V C106 1 119 750 11 TANTALUM CHIP 22uF 20 6 3V C107 1 165 884 11 CERAMIC CHIP 2 2uF 10 6 3V C108 1 125 837 11 CERAMIC CHIP 1uF 10 6 3V C111 1 165 176 11 CERAMIC CHIP 0 047uF 10 16V C112 1 125 891 11 CERAMIC CHIP 0 47uF 10 10V C113 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C114 1 104 851 11 TANTALUM CHIP 10uF 20 10V C116 1 107 826 11 CERAMIC CHIP 0...

Page 20: ... 10W R127 1 216 827 11 METAL CHIP 3 3K 5 1 10W R128 1 218 291 11 METAL CHIP 16K 5 1 10W R129 1 216 841 11 METAL CHIP 47K 5 1 10W R130 1 216 826 11 METAL CHIP 2 7K 5 1 10W R131 1 216 845 11 METAL CHIP 100K 5 1 10W R132 1 216 823 11 METAL CHIP 1 5K 5 1 10W R133 1 216 820 11 METAL CHIP 820 5 1 10W R134 1 216 809 11 METAL CHIP 100 5 1 10W R135 1 218 291 11 METAL CHIP 16K 5 1 10W R136 1 216 829 11 META...

Page 21: ...ECTRET CONDENSER NOISE DETECT SP1 1 542 429 11 DRIVER 040F018 L ch SP101 1 542 429 11 DRIVER 040F018 R ch ACCESSORIES 1 477 125 12 ADAPTOR PLUG DUAL for in flight use 1 566 410 21 ADAPTOR PLUG GOLD PLATED UNIMATCH PLUG ADAPTOR 1 829 890 12 CORD WITH PLUG GOLD PLATED STEREO MINI PLUG 0 5m Tourist 1 829 891 12 CORD WITH PLUG GOLD PLATED L TYPE STEREO MINI PLUG 1 5m 2 514 450 02 CASE CARRYING 2 514 4...

Page 22: ...ng the version at the upper right on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 2004 11 New 1 1 2005 01 Addition of US AEP UK and E models 1 2 2005 02 Addition of Canadian model 1 3 2006 08 Change of form for Ref No 8 on EXPLODED VIEWS SPM 06102 ...

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