Sony XR-1750 Page 3 Service Manual Download | Manualshive

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SECTION 1

GENERAL

This section is extracted
from instruction manual.

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Summary of Contents for XR-1750

Page 1: ...istortion at 1 kHz 0 5 stereo 0 3 mono Separation 35 dB at 1 kHz Frequency response 30 15 000 Hz Capture ratio 2 dB AM Tuning range US model 530 1 710 kHz E Australian model 9 kHz 10 kHz switchable 531 1 602 kHz at 9 kHz step 530 1 710 kHz at 10 kHz step Antenna terminal External antenna connector Intermediate frequency 10 71 MHz 450 kHz Sensitivity 30 µV Power amplifier section Outputs Speaker ou...

Page 2: ...ction 23 6 4 Printed Wiring Board CONTROL Section 27 6 5 Schematic Diagram CONTROL Section 29 7 EXPLODED VIEWS 33 8 ELECTRICAL PARTS LIST 37 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 conductor...

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Page 8: ...low the disassembly procedure in the numerical order given COVER SECTION 2 DISASSEMBLY FRONT PANEL ASS Y 2 A 2 1 3 Remove the cover to direction of the arrow A 1 two claws 1 two claws 1 two claws 2 front panel ass y ...

Page 9: ...NK 5 mechanism deck 3 two screws PTT2 6 6 2 flexible flat cable CN1 5 seven screws PTT2 6 10 6 heat sink 2 two ground point screws 3 main board 4 insulator 1 connector CN351 3 three screws PTT2 6 6 4 front chassis 1 three screws PTT2 6 10 ...

Page 10: ... 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 11: ...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 12: ... 12 LEVER PINCH SELECTION 1 Align 2 lever pich selection HEAD PLATE ASS Y 3 step screw HP 3 step screw HP 2 Fit shaft in groove 1 Fit in groove groove ...

Page 13: ... 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 14: ...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 15: ... 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 16: ...re 1 Put the set into the FWD PB mode 0 dB 0 775 V TAPE DECK SECTION Tape Speed Adjustment Procedure 1 Put the set into the FWD PB mode TUNER SECTION FM S Meter Adjustment Setting SOURCE button FM FREQUENCY SELECT switch 9 k E Australian model 0 dB 1 µV antenna jack J1 0 01 µF TU1 pin Carrier frequency 97 9 MHz US model 98 0 MHz E Australian model Output level 30 dB 31 6 µV Mode mono Modulation 1 ...

Page 17: ... 17 Adjustment Location SET UPPER VIEW Tape Speed Adjustment TU1 RV1 FM S Meter Adjustment 22 15 14 1 TU1 Pin SET SIDE VIEW ...

Page 18: ...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 VDD Power supply 31 FM_OSC I FM OSC signal input pin 32 AM_OSC I AM OSC signal input pin 33 GND GND 34 NC2 Not used 35 EO1 O Main charge pump o...

Page 19: ... remote commander input pin A D input 58 PW_SEL I Power select switch input pin 59 MTLIN I AUTO METAL detection pin L METAL 60 AD_ON O Power supply control pin for A D conversion 61 KEYSEL I Key function setting pin 62 SEKOUTSEL I Active select pin for SEKOUT 63 PULL OUT I Not used 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...

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Page 23: ...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 24: ... 32 IC601 BA3918 V2 OVER VOLTAGE PROTECT REGULATOR 1 2 3 4 5 6 7 8 9 10 12 11 NC MODE2 MODE1 STB VDD AMP VCC ANT COM AM FM GND ...

Page 25: ...lectrical parts list SECTION 7 EXPLODED VIEWS 1 CHASSIS SECTION Ref No Part No Description Remark Ref No Part No Description Remark 1 X 3373 606 1 CHASSIS ASSY 2 3 012 600 01 INSULATOR 3 A 3313 099 A MAIN BOARD COMPLETE US 3 A 3313 103 A MAIN BOARD COMPLETE E Australian 4 3 915 923 01 SCREW GROUND POINT 5 3 014 065 01 COVER 6 1 776 207 11 CORD WITH CONNECTOR 7 3 012 598 01 BRACKET IC 8 3 012 599 0...

Page 26: ... 5 6 60 3 009 315 01 BUTTON R S BTM LCL r 61 3 932 205 61 DOOR CASSETTE 62 3 935 003 01 SPRING TORSION 63 3 010 282 01 PLATE LCD GROUND 64 3 009 305 01 SHEET REFLECTOR 65 3 009 302 01 PLATE LCD LIGHT GUIDE 66 3 009 303 01 HOLDER LCD 67 A 3294 289 A CONTROL BOARD COMPLETE 68 X 3374 102 1 PANEL SUB ASSY 69 3 016 107 01 SHEET F LCD901 1 801 588 11 DISPLAY PANEL LIQUID CRYSTAL PL901 1 762 619 11 LAMP ...

Page 27: ...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 28: ...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 Ref No Part No Description Remark Ref No Part No Description Remark 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 3 930 932 01 FLYWHEEL F SEF 172 A 3291 667 ...

Page 29: ...MP PILOT PL902 1 517 633 11 LAMP PILOT RESISTOR R901 1 216 045 00 METAL CHIP 680 5 1 10W R902 1 216 045 00 METAL CHIP 680 5 1 10W R903 1 216 045 00 METAL CHIP 680 5 1 10W R904 1 216 049 11 METAL CHIP 1K 5 1 10W R905 1 216 053 00 METAL CHIP 1 5K 5 1 10W R906 1 216 053 00 METAL CHIP 1 5K 5 1 10W R907 1 216 057 00 METAL CHIP 2 2K 5 1 10W R908 1 216 061 00 METAL CHIP 3 3K 5 1 10W R909 1 216 065 00 MET...

Page 30: ...AMIC CHIP 0 1uF 25V C354 1 126 157 11 ELECT 10uF 20 16V C356 1 126 934 11 ELECT 220uF 20 16V C362 1 163 038 00 CERAMIC CHIP 0 1uF 25V C401 1 124 584 00 ELECT 100uF 20 10V SW910 1 762 619 11 SWITCH KEY BOARD WITH LED DSPL SW911 1 762 619 11 SWITCH KEY BOARD WITH LED BTM SW912 1 762 619 11 SWITCH KEY BOARD WITH LED LCL SW921 1 762 619 11 SWITCH KEY BOARD WITH LED 6 SW922 1 762 619 11 SWITCH KEY BOAR...

Page 31: ...C CHIP 0 1uF 25V CONNECTOR CN1 1 766 260 11 CONNECTOR FFC FPC ZIF 7P CN351 1 506 995 11 PIN CONNECTOR PC BOARD 13P CN401 1 774 698 11 JACK PIN 2P LINE OUT CN602 1 770 407 11 CONNECTOR BOARD TO BOARD 12P CN801 1 774 701 11 PIN CONNECTOR 16P CONPOSITION CIRCUIT BLOCK CP1 1 519 504 11 GAP DISCHARGE DIODE D1 8 719 040 04 DIODE MA721WK TX D2 8 719 010 34 DIODE UZ 4 7BSC D3 8 719 048 54 DIODE MTZJ T 77 ...

Page 32: ...ONDUCTOR CHIP 3216 JC764 1 216 296 00 CONDUCTOR CHIP 3216 JC767 1 216 295 00 CONDUCTOR CHIP 2012 JC768 1 216 295 00 CONDUCTOR CHIP 2012 JC769 1 216 295 00 CONDUCTOR CHIP 2012 JC770 1 216 295 00 CONDUCTOR CHIP 2012 COIL L501 1 410 971 11 INDUCTOR 10uH L801 1 416 046 11 COIL CHOKE 400uH TRANSISTOR Q1 8 729 900 53 TRANSISTOR DTC114EK Q2 8 729 920 74 TRANSISTOR 2SC2412K QR Q3 8 729 027 23 TRANSISTOR D...

Page 33: ... R355 1 216 061 00 METAL CHIP 3 3K 5 1 10W R360 1 216 001 00 METAL CHIP 10 5 1 10W R401 1 249 393 11 CARBON 10 5 1 4W R501 1 216 097 00 METAL CHIP 100K 5 1 10W R502 1 216 238 00 METAL CHIP 47K 5 1 8W E Australian R502 1 216 246 00 METAL CHIP 100K 5 1 8W US R503 1 216 242 00 METAL CHIP 68K 5 1 8W US R503 1 216 246 00 METAL CHIP 100K 5 1 8W E Australian R504 1 249 429 11 CARBON 10K 5 1 4W R506 1 216...

Page 34: ...0 SWITCH SLIDE FREQUENCY SELECT E Australian TUNER TU1 A 3282 034 A TUNER UNIT TUX 010 E VIBRATOR X501 1 578 785 11 VIBRATOR CRYSTAL 4 5MHz MISCELLANEOUS 6 1 776 207 11 CORD WITH CONNECTOR 158 1 660 169 21 REEL BOARD F901 1 533 330 11 FUSE BLADE TYPE AUTO FUSE 10A HP901 1 500 157 21 HEAD MAGNETIC PLAYBACK M901 A 3291 665 A MOTOR ASSY MAIN CAPSTAN REEL M902 A 3291 664 A MOTOR ASSY SUB LOADING TAPE ...

Page 35: ...43 XR 1750 MEMO ...

Page 36: ...ised 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 1 2001 04 Correction 1 included Correction of Part No for Ref No 57 BUTTON L SPM 01006 1 0 1999 04 Correction 1 1997 02 New ...

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