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Sony XR-3750, Service Manual

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Sony XR-3750 Service Manual Download Page 1

MICROFILM

XR-3750/C350

AEP Model

UK Model

SERVICE MANUAL

FM/MW/LW CASSETTE CAR STEREO

SPECIFICATIONS

Model Name Using Similar Mechanism

NEW

Tape Transport Mechanism Type

MG-52A-135

Refer to RM-X2S/X3S SERVICE MANUAL (9-960-039-

∏

)

issued previously for information of remote commander
(RM-X2S) supplied with XR-C350.

Photo: XR-C350

Summary of Contents for XR-3750

Page 1: ...MW LW CASSETTE CAR STEREO SPECIFICATIONS Model Name Using Similar Mechanism NEW Tape Transport Mechanism Type MG 52A 135 Refer to RM X2S X3S SERVICE MANUAL 9 960 039 issued previously for information of remote commander RM X2S supplied with XR C350 Photo XR C350 ...

Page 2: ...m Main Section 27 6 4 Printed Wiring Board Key Section 32 6 5 Schematic Diagram Key Section 34 7 EXPLODED VIEWS 39 8 ELECTRICAL PARTS LIST 43 SERVICING NOTES 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 board within 3 times Be careful not to apply force on the conducto...

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

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Page 10: ...he disassembly procedure in the numerical order given FRONT PANEL ASS Y 1 Push the button release A 2 Remove the front panel ass y to the direction of the arrow A COVER ASS Y SECTION 2 DISASSEMBLY 2 1 3 cover ass y 1 2 ...

Page 11: ...hree screws PTT2 6 8 2 sub panel 3 connector CN302 SUB PANEL MECHANISM DECK MG 52A 135 MAIN BOARD HEAT SINK 2 two ground point screws 1 two screws PTT2 6 8 3 main board 5 heat sink 4 screw PTT2 6 8 XR C350 only 1 screw PTT2 6 8 4 screw PTT2 6 8 XR C350 only 4 six screws PTT2 6 8 XR C350 PTT2 6 10 XR 3750 ...

Page 12: ... the numerical order given ALIGNMENT OF FRONT SWITCH 1 Align mark on the rotary switch the position shown in the figure chassis S ass y 2 Align hole in the gear LDG D with the position shown in the figure hole 2 Install the gear LDG E 1 Align hole as shown in the figure GEAR LDGE ...

Page 13: ...4 1 chassis S ass y 2 screw PS2 4 1 Align mark on the rotary switch with hole in the lever mode 2 Fit on positions A B and C and install the lever mode LEVER MODE hole in lever mode mark on rotary switch lever mode rotary switch A C B ...

Page 14: ...CTION 1 Align 2 lever pich selection HEAD PLATE ASS Y 5 step screw HP 5 step screw HP 2 Fit shaft in groove ATS lever 1 Fit in groove 3 Press the ATS lever 4 Position the head plate sub ass y as shown in the figure groove ...

Page 15: ... shaft A Set the ends of spring to B and C shaft shaft B C C B shaft A HOUSING 2 Install the hanger on to two claws of the housing 1 Install the catch to the hanger 7 Holder the hanger by bending the claw A part B part C part D part 8 Holder the hanger by bending the claw 3 Put the housing under A part 4 Fit claw on B part 6 Fit projections on D part 5 Fit projections on C part hanger ...

Page 16: ...tion and fit on projection 1 Fit the arm suction on the shaft projection 1 Fit the lever LDG A on shaft A C and install it shaft A shaft B shaft C 3 two type E stop ring 2 0 2 Fit the lever LDG B on shafts A and B and install shaft A shaft B LEVER LDG A LDG B ...

Page 17: ... claws GUIDE C 4 Align hole in the gear LDG D with mark on the lever LDG A gear LDG FB hole gear LDG D gear LDG A 3 Move the lever LDG B in the arrow direction 1 gear LDG A 2 tension spring lever LDG 5 gear LDG FT 6 polyethylene washer ...

Page 18: ...ayback head pinch roller erase head rubber belts capstan idlers 2 Demagnetize the playback head with a head demagnetizer 3 Do not use a magnetized screwdriver for the adjustments 4 After the adjustments apply suitable locking compound to the parts adjusted 5 The adjustments should be performed with the power supply voltage unless otherwise noted Torque Measurement Mode Torqu Meter Meter Reading Fo...

Page 19: ...age 21 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 Procedure 1 Set to the test mode See page 18 2 Push the SOURCE button and set to FM Display 3 Push the preset 3 button Display 4 Adjust with the volume RV2 on TU1 so that the FM indica tion turns to FMI indication on the display window But...

Page 20: ... mode See page 18 2 Push the SOURCE button and set to FM 3 Push the MODE button and set to MW Display 5 Adjust with the volume RV1 on TU1 so that the MW indi cation turns to MWI indication on the display window But in case of already indicated MWI turn the RV1 so that put out light I indication and adjustment Display 4 Push the preset 3 button Display Adjustment Location See page 21 Procedure FM S...

Page 21: ... 21 Adjustment Location SET UPPER VIEW TU1 RV1 AM MW Auto Scan Stop Level Adjustment RV2 FM Auto Scan Stop Level Adjustment RV4 FM Stereo Separation Adjustment Tape Speed Adjustment ...

Page 22: ...SS switch input pin A D input 24 25 KEYIN1 KEYIN0 I Key input pin A D input 26 RC_IN0 I Rotary remote commander input pin A D input 27 VSM I FM AM signal meter voltage detection pin A D input 28 AMIFIN I AM MW SW IF input pin 29 FMIFIN I FM IF input pin 30 VDD2 Power supply 31 FM_OSC I FM OSC signal input pin 32 AM_OSC I AM OSC signal input pin 33 GND GND 34 N C Not used 35 EOI O Main charge pump ...

Page 23: ...AL detection pin L METAL 60 KEYACT O Power supply control pin for A D conversion 61 KEYSEL0 I Key function setting pin 62 KEYSEL1 I Active select pin for SEKOUT 63 COLOR I Illumination color setting pin L amber H green 64 LCDCE O LCD chip enable output pin 65 LCDCKO O LCD clock output pin 66 LCDSO O LCD data output pin 67 LCDINH O LCD brank indication control pin 68 UNICKI I Clock input pin for SO...

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Page 27: ...F2 120µ 70µ X1 X1 VCT F1 120µ 70µ NR OFF B F3 LPF VCC DETECT MS ON OFF NR MODE FWD RVS TAPE EQ TAPE AUX NR BIAS NR MS MODE OFF B T2 T1 DECODER LATCH SHIFT REGISTER CONTROL 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 LSELO L4 L3 L2 L1 VDD R1 R2 R3 R4 RSELO RVRIN RCOM RT1 RT2 RT3 RTOUT RSIN RS1 RS2 RS3 RSOUT RFIN RFOUT RR...

Page 28: ...OR 1 2 3 4 5 6 7 8 9 10 12 11 NC MODE2 MODE1 STB VDD AMP VCC ANT COM AM FM GND 1 2 3 4 5 6 7 8 9 10 14 13 12 11 BUS ON SWITCH RESET SWITCH BATTERY SWITCH BUS ON RST BATT CLK VREF DATA GND VCC RST BUS ON CLK IN BU IN DATA IN DATA OUT IC701 BA8270F E2 ...

Page 29: ...K ASSY 5 3 010 376 01 INSULATOR XR 3750 5 3 011 295 01 INSULATOR MAIN XR C350 6 A 3309 873 A MAIN BOARD COMPLETE XR C350 GREEN 6 A 3309 874 A MAIN BOARD COMPLETE XR C350 AMBER 6 A 3309 911 A MAIN BOARD COMPLETE XR 3750 7 3 915 923 01 SCREW GROUND POINT 8 X 3373 203 1 COVER ASSY XR C350 8 X 3373 269 1 COVER ASSY XR 3750 9 1 777 989 11 CORD WITH CONNECTOR AMP TEL MUTE XR C350 10 3 012 264 01 BRACKET...

Page 30: ...MUTE XR C350 58 3 009 867 01 BUTTON L 3 SEEK AMS 0 r OFF SEL MUTE XR 3750 59 3 009 308 01 BUTTON 1 3 6 1 2 3 XR C350 59 3 010 473 01 BUTTON 1 3 6 1 2 3 XR 3750 60 3 009 309 11 BUTTON 4 6 4 5 6 XR C350 60 3 010 474 11 BUTTON 4 6 4 5 6 XR 3750 61 3 009 312 01 BUTTON R B BTM LCL DISC XR C350 61 3 009 315 01 BUTTON R 3 BTM LCL r XR 3750 62 3 010 282 01 PLATE LCD GROUND 63 3 009 305 01 SHEET REFLECTOR ...

Page 31: ...675 01 BELT 52 102 3 928 673 01 LEVER LDG A 103 3 928 674 01 LEVER LDG B 104 3 933 341 01 SPRING LEVER LDG TENSION 105 3 928 671 01 HOUSING 106 3 933 347 01 ARM SUCTION 107 3 933 340 01 HANGER 108 3 933 346 01 CATCHER 109 3 933 344 01 GUIDE C 110 3 341 753 11 WASHER POLYETHYLENE 111 3 933 335 01 GEAR LDG FT 112 3 928 667 01 GEAR LDG A M901 A 3291 665 A MOTOR ASSY MAIN CAPSTAN REEL ...

Page 32: ...ER POLYETHYLENE 160 3 933 336 01 SPRING ARM HANGER TENSION 161 3 928 669 01 LEVER PINCH SELECTION 162 3 928 668 01 LEVER MODE 163 3 933 338 01 SCREW HP STEP 164 3 927 100 01 SCREW PS 2X10 SPECIAL 165 3 928 670 01 SPRING PINCH PRESS 166 X 3371 712 1 PLATE SUB ASSY HEAD 167 3 364 151 01 WASHER 168 X 3371 701 1 CHASSIS M SUB ASSY A 169 X 3371 707 1 CLUTCH PLAY ASSY 170 3 701 437 21 WASHER 171 3 930 9...

Page 33: ...V C903 1 163 038 00 CERAMIC CHIP 0 1uF 25V C904 1 163 137 00 CERAMIC CHIP 680PF 5 50V CONNECTOR CNP901 1 764 423 11 PIN CONNECTOR 12P DIODE D901 8 719 420 90 DIODE MA8051 M XR 3750 D901 8 719 976 99 DIODE DTZ5 1B XR C350 D902 8 719 105 99 DIODE RD6 2M B1 XR C350 D902 8 719 422 64 DIODE MA8062 M XR 3750 D903 8 719 105 99 DIODE RD6 2M B1 XR C350 D903 8 719 422 64 DIODE MA8062 M XR 3750 D904 8 719 10...

Page 34: ...9 11 SWITCH KEY BOARD WITH LED DISC PRESET XR C350 GREEN LSW930 1 762 617 11 SWITCH KEY BOARD WITH LED DISC PRESET XR C350 AMBER LSW930 1 762 617 11 SWITCH KEY BOARD WITH LED DSPL XR 3750 AMBER LSW930 1 762 619 11 SWITCH KEY BOARD WITH LED DISC PRESET XR C350 GREEN LSW930 1 762 619 11 SWITCH KEY BOARD WITH LED DSPL XR 3750 GREEN PILOT LAMP PL901 1 517 633 21 LAMP PILOT PL902 1 517 633 21 LAMP PILO...

Page 35: ... C24 1 163 038 00 CERAMIC CHIP 0 1uF 25V C25 1 124 589 11 ELECT 47uF 20 16V C27 1 164 232 11 CERAMIC CHIP 0 01uF 50V C101 1 163 263 11 CERAMIC CHIP 330PF 5 50V C102 1 163 263 11 CERAMIC CHIP 330PF 5 50V C104 1 164 232 11 CERAMIC CHIP 0 01uF 50V C105 1 164 489 11 CERAMIC CHIP 0 22uF 10 16V C106 1 163 227 11 CERAMIC CHIP 10PF 0 5PF 50V C107 1 126 163 11 ELECT 4 7uF 20 50V C108 1 163 263 11 CERAMIC C...

Page 36: ... 136 165 00 FILM 0 1uF 5 50V C745 1 136 165 00 FILM 0 1uF 5 50V C746 1 136 165 00 FILM 0 1uF 5 50V C751 1 164 506 11 CERAMIC CHIP 4 7uF 16V C752 1 126 096 11 ELECT 10uF 20 25V C753 1 136 173 00 FILM 0 47uF 5 50V C754 1 107 823 11 CERAMIC CHIP 0 47uF 10 16V C755 1 107 823 11 CERAMIC CHIP 0 47uF 10 16V C775 1 136 165 00 FILM 0 1uF 5 50V C776 1 136 165 00 FILM 0 1uF 5 50V C785 1 136 165 00 FILM 0 1uF...

Page 37: ...54 8 729 106 60 TRANSISTOR 2SB1115A Q355 8 729 900 53 TRANSISTOR DTC114EK Q501 8 729 027 23 TRANSISTOR DTA114EKA T146 Q502 8 729 120 28 TRANSISTOR 2SC1623 L5L6 Q503 8 729 027 23 TRANSISTOR DTA114EKA T146 Q601 8 729 030 18 TRANSISTOR 2SD2525 Q602 8 729 030 18 TRANSISTOR 2SD2525 Q603 8 729 027 23 TRANSISTOR DTA114EKA T146 Q604 8 729 900 53 TRANSISTOR DTC114EK Q701 8 729 900 53 TRANSISTOR DTC114EK Q7...

Page 38: ... 5 1 10W R514 1 216 049 11 METAL CHIP 1K 5 1 10W R515 1 216 097 00 METAL CHIP 100K 5 1 10W R516 1 216 097 00 METAL CHIP 100K 5 1 10W R517 1 216 097 00 METAL CHIP 100K 5 1 10W R518 1 216 097 00 METAL CHIP 100K 5 1 10W R519 1 216 097 00 METAL CHIP 100K 5 1 10W R520 1 216 097 00 METAL CHIP 100K 5 1 10W R521 1 216 097 00 METAL CHIP 100K 5 1 10W R522 1 216 097 00 METAL CHIP 100K 5 1 10W R523 1 216 097 ...

Page 39: ...CHIP 2 2 5 1 8W R785 1 216 134 00 METAL CHIP 2 2 5 1 8W R786 1 216 134 00 METAL CHIP 2 2 5 1 8W R851 1 216 025 00 METAL CHIP 100 5 1 10W R852 1 216 025 00 METAL CHIP 100 5 1 10W R853 1 216 041 00 METAL CHIP 470 5 1 10W R854 1 216 041 00 METAL CHIP 470 5 1 10W R855 1 216 041 00 METAL CHIP 470 5 1 10W R856 1 216 041 00 METAL CHIP 470 5 1 10W R857 1 216 049 11 METAL CHIP 1K 5 1 10W R858 1 216 025 00 ...

Page 40: ...1 777 989 11 CORD WITH CONNECTOR AMP TEL MUTE XR C350 507 1 782 093 11 CORD WITH CONNECTOR SPEAKER 508 1 782 092 11 CORD WITH CONNECTOR POWER 509 1 775 543 11 CORD GROUND 510 X 3369 817 1 BRACKET ASSY XR C350 511 1 465 459 11 ADAPTOR ANTENNA Ref No Part No Description Remark Sony Corporation Personal Mobile Communication Company 97B057548 1 Printed in Germany 1997 2 Published by Quality Assurance ...

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