Sony XR-C4120 Service Manual Download

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MICROFILM

SERVICE MANUAL

FM/MW/LW CASSETTE CAR STEREO

AEP Model

UK Model

Model Name Using Similar Mechanism

XR-C4100

Tape Transport Mechanism Type

MG-25Y-136

SPECIFICATIONS

XR-C4120

Summary of Contents for XR-C4120

Page 1: ...MICROFILM SERVICE MANUAL FM MW LW CASSETTE CAR STEREO AEP Model UK Model Model Name Using Similar Mechanism XR C4100 Tape Transport Mechanism Type MG 25Y 136 SPECIFICATIONS XR C4120 ...

Page 2: ... Diagram MAIN Board 1 2 21 6 4 Schematic Diagram MAIN Board 2 2 23 6 5 Printed Wiring Board KEY Board 25 6 6 Schematic Diagram KEY Board 27 6 7 IC Pin Function Description 31 7 EXPLODED VIEWS 34 8 ELECTRICAL PARTS LIST 37 Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C dur ing repairing Do not touch the soldering iron on the same conductor of the circuit bo...

Page 3: ... 3 SECTION 1 GENERAL This section is extracted from instruction manual ...

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Page 9: ... DISASSEMBLY 1 three screws PTT2 6 8 2 sub panel 3 connector CN351 5 screw PTT2 6 6 6 mechanism deck MG 25Y 136 4 flexible flat cable CN301 1 three screws PTT2 6 8 3 two ground point screws 5 three screws PTT2 6 8 5 two screws PTT2 6 10 1 screw PTT2 6 8 5 two screws PTT2 6 8 6 heat sink 2 rubber cap 25 1 two screws PTT2 6 8 4 main board ...

Page 10: ...bending the claw 6 Fit projection on D part 4 Fit claw on B part 3 Put the housing under A part 5 Fit projection on C part 1 Install the catch to the hanger 2 Install the hanger onto two claws of the housing 7 Holder the hanger by bending the claw hanger housing 2 Move the arm suction in the arrow direction and fit on projection 1 Fit the arm suction on the shaft projection ...

Page 11: ...A shaft B 2 Fit the lever LDG B on shafts A and B and install it 3 type E stop ring 2 0 gear LDG D 5 gear LDG FT 6 polyethylene washer 2 tension spring LD 2 2 tension spring LD 1 gear LDG FB lever LDG A hole hole 4 Align hole in the gear LDG D with hole the lever LDG A 3 Move the lever LDG B in the arrow direction 1 ...

Page 12: ... 12 GUIDE C 2 guide C 1 three claws MOUNTING POSITION OF CAPSTAN REEL MOTOR M901 two precision screws P2 2 capstan reel motor M901 30 ...

Page 13: ... mode function In the test mode FM Auto Scan Stop Level andAM MW Auto Scan Stop Level adjustments can be performed easier than it in ordinary procedure Set the Test Mode 1 Set the power select switch S501 is A ON position 2 Turn ON the regulated power supply All LEDs on the set lights up and the clock is displayed Note Press the OFF button if the clock is not displayed 3 Push the preset 4 button 4...

Page 14: ...nt Location See page 16 FM RF signal generator Carrier frequency 98 0 MHz Output level 22 dB 12 6 µV Mode mono Modulation 1 kHz 22 5 kHz deviation 30 0 01 µF set antenna jack J1 SHUF SHUF FM Stereo Separation Adjustment Setting SOURCE button FM FM Stereo Level meter Level meter signal generator connection reading dB output channel L CH L CH A B R CH L CH Adjust RV4 on TU1 for minimum reading R CH ...

Page 15: ...to MW Display 4 Adjust with the volume RV1 on TU1 so that the MW indi cation turns to MW0 indication on the display window But in case of already indicated MW0 turn the RV1 so that put out light 0 indication and adjustment Display Adjustment Location See page 16 AM RF signal generator Carrier frequency 999 kHz 30 amplitude modulation by 1 kHz signal Output level 33 dB 44 7 µV 50 Ω set AM dummy ant...

Page 16: ... 16 Adjustment Location SET UPPER VIEW Tape Speed Adjustment TU1 RV1 AM MW Auto Scan Stop Level Adjustment RV2 FM Auto Scan Stop Level Adjustment RV4 FM Stereo Separation Adjustment ...

Page 17: ...ted except for electrolytics and tantalums All resistors are in Ω and 1 4 W or less unless otherwise specified C panel designation U B Line Power voltage is dc 14 4V and fed with regulated dc power supply from ACC and BATT cords Voltages and waveforms are dc with respect to ground under no signal detuned conditions no mark FM MW LW TAPE PLAYBACK Impossible to measure Voltages are taken with aVOM I...

Page 18: ... 18 Waveforms MAIN Board 1 IC21 1 XT OUT 2 IC501 XT IN 3 IC501 OSC IN 0 2 Vp p 97 6 ns 1 7 Vp p 30 5 µs 1 3 Vp p 54 2 ns 2 7 Vp p 27 µs KEY Board 1 IC901 º OSC ...

Page 19: ...02 K 3 D704 K 3 D705 K 5 D706 K 5 D707 K 5 D708 K 5 D709 K 5 D710 J 3 D711 K 5 D712 K 5 D713 K 5 D721 D 8 Ref No Location Ref No Location Semiconductor Location D722 D 8 D723 D 8 D724 D 9 D731 B 7 D732 D 7 D733 D 7 D734 B 7 D781 D 13 IC21 E 3 IC301 H 4 IC331 D 5 IC351 I 12 IC501 I 7 IC551 J 12 IC581 C 14 IC611 E 13 IC751 B 8 Q51 E 11 Q52 E 11 Q121 G 4 Q151 G 6 Q171 A 4 Q181 A 3 Q251 G 6 Q271 A 3 Q...

Page 20: ...XR C4120 21 22 6 3 SCHEMATIC DIAGRAM MAIN Board 1 2 See page 18 for Waveforms See page 29 for IC Block Diagrams ...

Page 21: ...XR C4120 23 24 6 4 SCHEMATIC DIAGRAM MAIN Board 2 2 See page 30 for IC Block Diagrams Page 27 ...

Page 22: ...Location Component Side Ref No Location D902 B 12 D903 B 12 D904 B 11 D951 C 9 Q941 B 1 Q942 C 1 Q943 C 1 Q944 C 1 Q945 C 2 6 5 PRINTED WIRING BOARD KEY Board Semiconductor Location Conductor Side Ref No Location IC901 C 8 Page 19 ...

Page 23: ...XR C4120 6 6 SCHEMATIC DIAGRAM KEY Board See page 18 for Waveform 27 28 Page 24 ...

Page 24: ...VCC DETECT MS ON OFF FWD RVS TAPE EQ TAPE AUX NR BIAS 24dB MS MODE T2 T1 IC331 TDA7462D SE3L SE3R MUTE SDA SCL PAUSE OUT FL OUT FR OUT RL OUT RR SUBOUT SUBOUT VDD GND CREF SE1L SE1R MD MD CDL CDL CDR CDR PDR PDGND PDL SE2L SE2R INPUT GAIN AUTO ZERO PAUSE DETECT INPUT MULTIPLEXER MIXING STAGE REAR SIDE SELECTOR FRONT SIDE SELECTOR LOUDNESS CONTROL CIRCUIT INPUT GAIN BEEP LOUDNESS CONTROL CIRCUIT SO...

Page 25: ...e IC581 L bus on 21 UNISO O Serial data output to the SONY bus interface IC581 22 UNISI I Serial data input from the SONY bus interface IC581 23 UNICKO O Serial data transfer clock signal output to the SONY bus interface IC581 24 UNICKI I Serial data reading clock signal input for the SONY bus interface Not used open 25 NCO O Not used open 26 KEYACK I Input of acknowledge signal for the key entry ...

Page 26: ...uting on off control signal output to the CXA2509AQ IC301 H muting on Active at ATA FF REW mode 55 DOLON I O Dolby control in out terminal At initial mode valid invalid selection input of dolby function valid at L input At normal mode dolby on off control signal output terminal dolby on at H output Not used this function fixed at H 56 AMSIN I Whether a music is present or not from CXA2509AQ IC301 ...

Page 27: ...tor on 92 POWON O Main system power supply on off control signal output to the BA3918 IC611 H power on 93 FM ON O FM system power supply on off control signal output to the BA3918 IC611 L AM power on H FM power on 94 TU ON O Tuner system power supply on off control signal output to the BA3918 IC611 H tuner power on 95 to 100 NCO O Not used open Tape position EJECT FF REW REV FWD mode detect input ...

Page 28: ...ple KNOB BALANCE WHITE RED Parts Color Cabinet s Color Ref No Part No Description Remark Ref No Part No Description Remark 1 3 030 828 01 PANEL SUB 2 3 935 003 01 SPRING TORSION 3 3 027 437 41 DOOR CASSETTE 4 X 3367 636 1 LOCK ASSY 5 3 033 846 01 INSULATED PLATE 6 A 3317 388 A MAIN BOARD COMPLETE 7 3 915 923 01 SCREW GROUND POINT 8 X 3373 270 1 COVER ASSY 9 1 776 527 61 CORD WITH CONNECTOR ISO POW...

Page 29: ...1 01 BUTTON SOURCE 57 3 030 830 01 KNOB VOL 58 3 030 832 01 LEVER S A 59 3 030 834 01 BUTTON M S MODE SOUND 60 3 030 836 11 BUTTON D P A 6 DISC DSPL 61 3 030 840 01 PLATE B GROUND 62 3 030 839 01 SHEET REFLECTOR 63 3 030 824 01 PLATE LIGHT GUIDE 64 1 694 508 11 CONDUCTIVE BOARD CONNECTION 65 3 030 825 01 HOLDER LCD 66 3 030 827 01 PANEL FRONT BACK LCD901 1 803 322 11 DISPLAY PANEL LIQUID CRYSTAL 6...

Page 30: ...11 WASHER POLYETHYLENE 158 3 020 533 01 HOUSING 159 3 020 532 01 ARM SUCTION 160 3 020 534 01 HANGER 161 3 933 346 01 CATCHER 162 3 933 344 01 GUIDE C 163 3 014 798 01 SCREW HEAD SPECIAL 164 3 364 151 01 WASHER 165 A 3301 267 F CHASSIS ASSY G 166 3 017 302 01 BELT 25 167 3 936 853 01 FLYWHEEL F 168 3 701 437 21 WASHER HP901 1 500 196 21 HEAD MAGNETIC PLAYBACK M901 A 3291 665 A MOTOR ASSY MAIN CAPS...

Page 31: ...OR DTC114EK Q943 8 729 106 60 TRANSISTOR 2SB1115A Q944 8 729 900 53 TRANSISTOR DTC114EK Q945 8 729 900 53 TRANSISTOR DTC114EK RESISTOR R901 1 216 647 11 METAL CHIP 680 0 5 1 10W R902 1 216 647 11 METAL CHIP 680 0 5 1 10W R903 1 216 647 11 METAL CHIP 680 0 5 1 10W R904 1 216 651 11 METAL CHIP 1K 0 5 1 10W R905 1 216 655 11 METAL CHIP 1 5K 0 5 1 10W R906 1 216 655 11 METAL CHIP 1 5K 0 5 1 10W R907 1...

Page 32: ...20 16V C27 1 163 222 11 CERAMIC CHIP 5PF 0 25PF 50V C28 1 163 231 11 CERAMIC CHIP 15PF 5 50V C29 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C30 1 163 251 11 CERAMIC CHIP 100PF 5 50V C31 1 163 251 11 CERAMIC CHIP 100PF 5 50V C32 1 163 017 00 CERAMIC CHIP 0 0047uF 5 50V C33 1 163 809 11 CERAMIC CHIP 0 047uF 10 25V C34 1 109 982 11 CERAMIC CHIP 1uF 10 10V C35 1 163 809 11 CERAMIC CHIP 0 047uF 10 25V C36...

Page 33: ... 11 CERAMIC CHIP 0 1uF 50V C584 1 163 077 00 CERAMIC CHIP 0 1uF 10 25V C601 1 164 346 11 CERAMIC CHIP 1uF 16V C602 1 164 346 11 CERAMIC CHIP 1uF 16V C611 1 124 233 11 ELECT 10uF 20 16V C612 1 124 233 11 ELECT 10uF 20 16V C614 1 124 233 11 ELECT 10uF 20 16V C615 1 124 233 11 ELECT 10uF 20 16V C616 1 124 233 11 ELECT 10uF 20 16V C617 1 124 233 11 ELECT 10uF 20 16V C618 1 164 506 11 CERAMIC CHIP 4 7u...

Page 34: ...T 0 JC121 1 216 295 00 SHORT 0 JC151 1 216 295 00 SHORT 0 JC152 1 216 295 00 SHORT 0 JC181 1 216 296 00 SHORT 0 JC182 1 216 295 00 SHORT 0 JC191 1 216 296 00 SHORT 0 JC192 1 216 296 00 SHORT 0 JC272 1 216 296 00 SHORT 0 JC301 1 216 295 00 SHORT 0 JC302 1 216 295 00 SHORT 0 JC303 1 216 295 00 SHORT 0 JC304 1 216 295 00 SHORT 0 JC305 1 216 296 00 SHORT 0 JC331 1 216 296 00 SHORT 0 JC332 1 216 296 00...

Page 35: ...1 10W R191 1 249 429 11 CARBON 10K 5 1 4W R192 1 216 105 00 RES CHIP 220K 5 1 10W R201 1 216 041 00 METAL CHIP 470 5 1 10W R202 1 216 109 00 METAL CHIP 330K 5 1 10W R203 1 216 077 00 METAL CHIP 15K 5 1 10W R204 1 216 079 00 METAL CHIP 18K 5 1 10W R205 1 216 073 00 METAL CHIP 10K 5 1 10W R206 1 216 081 00 METAL CHIP 22K 5 1 10W R241 1 216 073 00 METAL CHIP 10K 5 1 10W R242 1 216 065 00 RES CHIP 4 7...

Page 36: ...W R702 1 216 025 00 RES CHIP 100 5 1 10W R703 1 216 025 00 RES CHIP 100 5 1 10W R704 1 216 295 00 SHORT 0 R705 1 216 295 00 SHORT 0 R706 1 216 049 11 RES CHIP 1K 5 1 10W R707 1 216 049 11 RES CHIP 1K 5 1 10W R708 1 216 198 00 RES CHIP 1K 5 1 8W R709 1 216 174 00 RES CHIP 100 5 1 8W R710 1 216 174 00 RES CHIP 100 5 1 8W R711 1 216 049 11 RES CHIP 1K 5 1 10W R713 1 216 025 00 RES CHIP 100 5 1 10W R7...

Page 37: ... 412 1 CASE PANEL ASSY for FRONT PANEL PARTS FOR INSTALLATION AND CONNECTIONS 501 X 3369 817 1 BRACKET ASSY for RM X4S AEP UK 501 X 3373 432 1 BRACKET ASSY for RM X4S AEP South European 502 7 685 248 14 SCREW KTP 3X12 TYPE4 503 X 3370 077 1 SCREW ASSY AE KEY FITTING 504 3 916 161 31 FRAME ASSY 505 1 465 459 21 ADAPTER ANTENNA 506 1 776 527 61 CORD WITH CONNECTOR ISO POWER 501 502 503 504 PLATE BRA...

Page 38: ... 44 XR C4120 Sony Corporation Personal Mobile Communication Company 9 926 424 11 99A057542 1 Printed in Hungary 1999 1 Published by Quality Assurance Dept ...

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