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MDR-RF920R/RF960R

12

12

4-2. SCHEMATIC DIAGRAM  – RX-BASE SECTION (RF920R) –

Q304

SP2

SP1

L-CH

R-CH

C325

C326

R314

C361

R334

C362

R333

RV302(2/2)

RV302(1/2)

R328

R327

C344

S301

JW311

JW310

C369

R354

Q302

JW306

C324

C327

C328

C368

R315

R316

R321

C357

D304

Q303

C323

R318

C367

C330

JW308

R358

JC305

C358

R367

R355

R356

R332

R364

JC303

R357

R360

JC307

R362

R363

R361

C341

R349

C331

C310

C309

C308

C307

C306

R305

C305

R304

C304

JC301

R331

JW304

R325

R326

C335

C329

C350

C351

R330

C301

R351

R352

C342

JW302

C347

C346

D303

R366

JW303

JC308

R340

R347

R346

R345

JW301

JW305

R343

R342

R344

R341

C302

R302

JC310

RV301

C311

R310

C317

C316

C320

D301

R312

C312

C313

JC302

C333

C315

C314

L302

0.33

µ

H

C332

C336

C319

R308

R320

JC304

R309

C303

S101

R201

R202

R203

C203

R204

S202

S201

C202

C201

JW201

D201

IC201

Q201

Q202

L301

CF301

CF302

IC303

IC304

IC305

IC301

ANT301

JW307

IC302

DTC114TKA-T146

SPEAKER

SPEAKER

220

6.3V

220

6.3V

100k

100p

2.2k

100p

2.2k

15k

15k

0.1

0

0

0.01

22k

2SC2412K-T-146-R

SWITCH

0

220

6.3V

0.1

0.1

0.01

10

10

1k

0.01

SLC-22VR3F

2SC2412K-T-146-R

MUTE

0.1

47k

0.001

33

16V

0

22k

0

0.001

47k

47k

22k

1k

22k

0

22k

22k

0

10k

22k

22k

0.1

10k

1

1

50V

1

50V

22

16V

0.01

22

16V

3.3k

0.022

3.3k

0.022

0

2.2k

0

330

150

0.01

0.01

1

1

10

1

100k

1M

0.01

0

47

16V

0.22

RD2.2SB-T1

150

0

0

6.8k

7.5k

30k

15k

0

0

120k

240k

62k

470k

0.47

2.2k

0

4.7k

10

16V

3.3k

0.001

10

16V

0.1

HVU363ATRU

15k

3.3

50V

0.01

0

3p

22p

27p

56p

56p

0.01

2.2k

10

0

100k

4.7

16V

(AUTO ON/OFF)

10k

1k

1M

0.01

100k

0.001

100p

0

RB411D

XC61CN1902NR

2SB1690K

B+ SWITCH

2SC2412K-T

B+ SWITCH

SN74HC4060PWR

BA10393F-E2

SN74AHC2G

SN74AHC2G74HDCTR

CXA1538N-T4

ANTENNA

0

LA4533M-TE-L-E

POWER AMP

VOL

IF AMP

CLOCK OSC/COUNTER

FREQUENCY

FREE RUN

DECODE

D-FF

DETECT

INVERTER

POWER

FREQUENCY

L301

RECEIVE

SIZE"AAA"

(IEC DESIGNATION R03)

DRY BATTERY

2PCS,3V

OR

BATTERY

RECHARGEABLE

(METAL HYDRIDE)

BP-HP550

BATTERY

RECHARGEABLE

S201,202

DETECT

2PCS,2.4V

CHARGE

TERMINAL

BATTERY

(TO TMR-RF960R)

15

Summary of Contents for MDR-RF920R

Page 1: ... in the MDR RF920RK MDR RF960R is the component model block one in the MDR RF960RK MDR RF920RK MDR RF960RK Wireless Stereo Headphones MDR RF920R MDR RF960R Transmitter TMR RF960R TMR RF960R COMPONENT MODEL NAME FOR MDR RF920RK MDR RF960RK Headphones Power source Supplied rechargeable nickelmetal hydride batteries BPHP550 or commercially available size AAA dry batteries Mass Approx 270 g 9 6 oz inc...

Page 2: ...CAL PARTS LIST 18 SECTION 1 GENERAL 5 Turn up the volume to a moderate level with the VOL control A MDR RF960R Press the TUNE button briefly for automatic tuning of the headphones If you do not receive a clear audio signal press it again B MDR RF920R Tune the headphones into the frequency of the transmitter with the TUNE control until you can hear the audio signal loud and clear Follow steps 3 and...

Page 3: ...ow 2 1 DISASSEMBLY FLOW Set 2 2 Front Plate R assy Page 3 2 3 Front Plate L assy Page 4 2 4 SW baord Page 5 1 ear pad R 2 three screws B2 6 3 front plate R sub assy 7 RX BASE board 8 craw q housing cap R 9 craws 4 Remove solder 2 places 6 Remove solder 4 places NAT driver R CH RED to RX BASE board to driver L CH housing R sub assy to RX BATTERY board 5 RX BASE board NAT NAT GRN RED ...

Page 4: ... ear pad L 3 front plate L sub assy 5 tow screws DIA 2 8 RX BATTERY board 4 Remove solder 2 places 2 three screws B2 6 driver L CH NAT GRN to RX BASE board 6 7 Remove solder 4 places to SW board to RX BASE board housing L sub assy RED RED RED NAT ...

Page 5: ... suspender assy under the S101 on the SW board SW board suspender suspender tensin spring hanger lid L housing L sub assy S101 1 two screws B2 6 housing L sub assy 2 hunger L 4 hunger L 6 SW board 3 two screws B2 6 5 2 4 SW BOARD 2 5 HOW TO HANG THE TENSION SPRING ...

Page 6: ...6 MDR RF920R RF960R a a b b wires wires wires head band housing L housing R L CH R CH wire groove SET THE LEAD WIRES Set the each lead wires as illustrated below ...

Page 7: ... 11 Adjust the RV303 TUNE to receive a signal Confirm the signal with stereo 12 Check same step 8 13 Set the transmitter CHANNEL switch to 3 14 Adjust the RV303 TUNE to receive a signal Confirm the signal with stereo 15 Check same step 8 3 3 Carrier Modulation Check 1 Set the transmitter CHANNEL switch to 2 2 Set the transmitter NOISE FILTER switch to OFF 3 Input a signal of 1kHz 316mVrms to trans...

Page 8: ...ect an oscilloscope to TP VT 12 When the transmitter off check the waveform of the oscilloscope as follows GND 1 8V 2 3sec 0 6V 13 Set the transmitter CHANNEL switch to 1 14 Push the headphones tuning switch S301 to receive radio frequency 15 Check same step 8 16 Set the transmitter CHANNEL switch to 3 17 Push the headphones tuning switch S301 to receive radio frequency 18 Check same step 8 Settin...

Page 9: ... C328 R328 C335 R366 C302 D301 C362 R315 R334 C367 C327 R321 R316 C329 C336 R318 R355 C314 C313 TP VT R340 C351 R327 C346 R341 R342 R343 R344 R345 R346 R347 R349 C341 C342 R351 R352 IC303 JC301 JC302 JC303 JC304 JC305 JC306 JC307 JC308 JC310 D304 JW311 RV301 CF302 JW307 JW310 JW305 JW302 RV302 C311 C316 C303 C312 C326 C325 C308 C330 C347 C306 C324 L301 C309 C310 CF301 N VOL POWER TUNE E E E RF920R...

Page 10: ...10 MDR RF920R RF960R S301 TUNE RF960R MODEL RV301 Free Run Frequency Adjustment CT1 CT1 RV301 L301 S301 BOARD RX BASE Component side ...

Page 11: ...301 ANT301 ANTENNA R CH SP1 SPEAKER L CH SP2 SPEAKER R CH D304 S101 AUTO ON OFF B POWER BATTERY CHARGE TERMINAL TO TMR RF960R RECHAGEABLE BATTERY NICKEL METAL HYDRIDE BP HP550 OR S301 TUNE RF960R MODEL RF960R MODEL RF920R MODEL RV303 TUNE VOL OSC Q3 RF AMP Q1 MIX Q2 CT1 I O FE UNIT FRONT END 7 15 11 Q4 Q10 D A 6 1 2 3 5 6 1 CK D FF BATTERY VOLTAGE DETECT IC201 1 2 B SWITCH Q201 202 S101 D201 S201 ...

Page 12: ...A T146 SPEAKER SPEAKER 220 6 3V 220 6 3V 100k 100p 2 2k 100p 2 2k 15k 15k 0 1 0 0 0 01 22k 2SC2412K T 146 R SWITCH 0 220 6 3V 0 1 0 1 0 01 10 10 1k 0 01 SLC 22VR3F 2SC2412K T 146 R MUTE 0 1 47k 0 001 33 16V 0 22k 0 0 001 47k 47k 22k 1k 22k 0 22k 22k 0 10k 22k 22k 0 1 10k 1 1 50V 1 50V 22 16V 0 01 22 16V 3 3k 0 022 3 3k 0 022 0 2 2k 0 330 150 0 01 0 01 1 1 10 1 100k 1M 0 01 0 47 16V 0 22 RD2 2SB T1...

Page 13: ...F301 CF302 IC301 R333 IC302 ANTENNA SPEAKER SPEAKER AUTO ON OFF RB411D XC61CN1902NR 0 01 1M 0 001 2SC2412K T B SWITCH 1k 100p 10k 100k 2SB1690K B SWITCH 0 SLC 22VR3F 0 01 1k 220 6 3V 220 6 3V 100k 10 10 0 1 0 1 220 6 3V 0 01 0 33 16V 0 001 15k 1 1 15k 100p 100p 2 2k 1 330 0 01 0 01 1 50V 2 2 50V 22 16V 0 01 22 16V 0 022 3 3k 3 3k 0 022 0 0 0 0 10 4 7 16V 0 47 2 2k 4 7k 0 10 16V 3 3k 0 15p 0 01 5p ...

Page 14: ...2 R325 C333 R314 R330 R331 L302 C344 RV303 R356 R310 C332 R308 IC304 C307 IC301 C350 C357 R305 R333 C361 C328 R328 C335 R366 C302 D301 C362 R315 R334 C367 C327 R321 R316 C329 C336 R318 R355 C314 C313 TP VT R340 C351 R327 C346 R341 R342 R343 R344 R345 R346 R347 R349 C341 C342 R351 R352 IC303 JC301 JC302 JC303 JC304 JC305 JC306 JC307 JC308 JC310 C205 JW201 D304 JW311 RV301 S301 CF302 JW307 JW310 JW3...

Page 15: ... 2 3 4 5 10 9 8 7 6 POWER SWITCH BIAS MUTE CIRCUIT AMP 1 POWER SWITCH IN 1 PRE GND IN 2 REF MUTE SWITCH OUT 1 POWER GND OUT 2 VCC AMP 2 Note on Schematic Diagram All capacitors are in µF unless otherwise noted pF µµF 50 WV or less are not indicated except for electrolytics and tantalums All resistors are in Ω and 1 4 W or less unless otherwise specified A B Line H adjustment for repair Power volta...

Page 16: ... 206 L5 L4 L7 L6 A RX BASE BOARD Page 14 2 3 A 1 B C Ref No Location Q1 C 2 Q2 C 2 Q3 C 3 Semiconductor Location Note on Printed Wiring Boards X parts extracted from the component side Through hole Pattern from the side which enables seeing The other layers patterns are not indicated Caution Pattern face side Parts on the pattern face side seen from Conductor B the pattern face are indicated Parts...

Page 17: ...253 143 01 SCREW B2 6 P TAPPING 3 A 4547 109 A RX BASE BOARD COMPLETE RF920R 3 A 4547 111 A RX BASE BOARD COMPLETE RF960R 4 X 3383 913 1 PLATE R SUB ASSY FRONT RF960R 4 X 3383 915 2 PLATE R SUB ASSY FRONT RF920R 6 3 251 098 01 HOUSING R RF920R 6 X 3383 911 1 HOUSING R SUB ASSY RF960R 7 3 251 102 01 CAP R HOUSING RF920R 8 3 254 082 11 SCREW 9 4 966 792 01 STOPPER LOWER 10 4 966 791 01 STOPPER UPPER...

Page 18: ...0V C30 1 164 381 91 CERAMIC CHIP 62PF 5 50V C39 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C40 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C301 1 165 908 11 CERAMIC CHIP 1uF 10 10V C302 1 125 891 11 CERAMIC CHIP 0 47uF 10 10V C303 1 124 231 61 ELECT 4 7uF 20 16V C304 1 164 227 11 CERAMIC CHIP 0 022uF 10 25V C305 1 164 227 11 CERAMIC CHIP 0 022uF 10 25V C306 1 124 234 00 ELECT 22uF 20 16V C307 1 162 970...

Page 19: ...TOR 3SK309XV TL Q2 8 729 209 45 TRANSISTOR 2SC3120 TE85R Q3 8 729 043 92 TRANSISTOR 2SC5084 0 TE85L Q302 8 729 901 81 TRANSISTOR 2SC2412K T 146 R RF960R Q303 8 729 901 81 TRANSISTOR 2SC2412K T 146 R RF960R Q304 8 729 027 44 TRANSISTOR DTC114TKA T146 RF960R RESISTOR R1 1 216 852 11 METAL CHIP 390K 5 1 10W R4 1 216 853 11 METAL CHIP 470K 5 1 10W R5 1 216 847 11 METAL CHIP 150K 5 1 10W R6 1 216 811 1...

Page 20: ...0R VARIABLE RESISTOR RV301 1 241 763 11 RES ADJ CARBON 4 7K FREE RUN FREQUENCY SWITCH S301 1 786 596 11 SWITCH TACTILE TUNE RF960R RESONATOR X1 1 813 239 11 RESONATOR SAW A 4547 106 A RX BATTERY BOARD COMPLETE CAPACITOR C201 1 162 927 11 CERAMIC CHIP 100PF 5 50V C202 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C203 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V DIODE D201 8 719 975 40 DIODE RB411D IC IC201 ...

Page 21: ...21 MDR RF920R RF960R MEMO ...

Page 22: ...N HISTORY Clicking the version allows you to jump to the revised page Also clicking 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 02 New ...

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