Sony XR-2750 Page 8 Service Manual Download | Manualshive

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– 8 –

Note:

Follow the disassembly procedure in the numerical order given.

COVER

SECTION 2

DISASSEMBLY

COLLAR (A), HANDLE ASS’Y

1

two screws

(PTT2.6

×

6)

3

Remove the cover to
ward direction

A

.

2

A

3

screw
(PTT2.6

×

6)

3

screw

(PTT2.6

×

6)

1

seven claws

4

handle ass’y

2

coller (A)

«
...
6
7
8
9
10
...
»

Summary of Contents for XR-2750

Page 1: ... response 30 15 000 Hz Capture ratio 2 dB There are the numerical values measured at 87 5 108 0 MHz MW LW Tuning range MW 531 1 602 kHz LW 153 281 kHz Antenna terminal External antenna connector Intermediate frequency 10 71 MHz 450 kHz Sensitivity MW 30 µV LW 50 µV Power amplifier section Outputs Speaker outputs sure seal connectors Speaker impedance 4 8 ohms Maximum power output 35 W 4 at 4 ohms ...

Page 2: ...component Notice that the minus side of a tantalum capacitor may be dam aged by heat CAUTION Danger of explosion if battery is incorrectly replaced Replace only with the same or equivalent type recommended by the manufacturer Discard used batteries according to the manufacturer s instructions ADVARSEL Lithiumbatteri Eksplosionsfare ved fejlagtig håndtering Udskiftning må kun ske med batteri af sam...

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

Page 4: ... 4 ...

Page 5: ... 5 ...

Page 6: ... 6 ...

Page 7: ... 7 ...

Page 8: ...ly procedure in the numerical order given COVER SECTION 2 DISASSEMBLY COLLAR A HANDLE ASS Y 1 two screws PTT2 6 6 3 Remove the cover to ward direction A 2 A 3 screw PTT2 6 6 3 screw PTT2 6 6 1 seven claws 4 handle ass y 2 coller A ...

Page 9: ...9 FRONT PANEL ASS Y 1 two claws 2 front panel ass y 1 three claws 5 mechanism deck 3 two screws PTT2 6 6 2 flexible board CNP301 MECHANISM DECK 1 connector CNP331 4 front chassis 3 three screws PTT2 6 6 ...

Page 10: ... 10 POWER BOARD 2 two connectors CNJ400 401 3 power board 1 three screws PTT2 6 8 1 two ground point screws 4 antenna cable 2 ground point screw 3 main board MAIN BOARD ...

Page 11: ... 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 12: ... screw PS2 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 hole in lever mode mark on rotary switch lever mode rotary switch A B C ...

Page 13: ...CTION 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 1 Align 2 lever pich selection ...

Page 14: ...Holder the hanger by bending the claw 3 Put the housing under A part 6 Fit projections on D part 5 Fit projections on C part hanger 4 Fit claw on B part 1 Fit shaft of the lever Pinch ass y in hole on the chassis M ass y and install the lever pinch ass y 2 two polyethylene washers shaft shaft B C C B shaft A 3 Install the spring pinch press to shaft A Set the ends of spring to B and C ...

Page 15: ...ft 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 ARM SUCTION 2 Move the arm suction in the arrow direction and fit on projection 1 Fit the arm suction on the shaft projection ...

Page 16: ... claws 4 Align hole in the gear LDG D with mark on the lever LDG A 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 GUIDE C gear LDG FB ...

Page 17: ...ith a denatured alcohol moistened swab playback head pinch roller rubber belt capstan idler 2 Demagnetize the playback head with a head demagnetizer 3 Do not use a magnetized screwdriver for the adjustments 4 The adjustments should be performed with the power supply voltage 14 4 V unless otherwise noted Torque Measurement Mode Torqu Meter Meter Reading Forward CQ 403A more than 60 g Reverse CQ 403...

Page 18: ...age 20 for the adjustment 0 dB 0 775 V TAPE DECK SECTION Tape Speed Adjustment Procedure 1 Put the set into the FWD PB mode Speed checker Frequency counter 1 5 to 2 5 2 955 to 3 075 Hz Specification Constant speed Adjustment Location See page 20 Procedure 1 Set to the test mode See page 17 2 Push the SOURCE button and set to FM Display 3 Push the preset 3 button Display 4 Adjust with the volume RV...

Page 19: ...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 20 Procedure FM Stereo Level meter Level meter signal genera...

Page 20: ... 20 Adjustment Location SET UPPER VIEW RV4 FM Stereo Separation Adjustment RV1 MW Auto Scan Stop Level Adjustment RV2 FM Auto Scan Stop Level Adjustment TU1 Tape Speed Adjustment ...

Page 21: ...BASS I D BASS 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 ch...

Page 22: ...witch 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 NC5 Not used Fixed at H 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 CLK_SEL I Not used Fixed at...

Page 23: ......

Page 24: ......

Page 25: ......

Page 26: ...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 27: ... 38 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 28: ...upplied 6 1 7 8 2 1 9 2 1 5 15 17 12 2 5 11 10 1 1 19 Ref No Part No Description Remark Ref No Part No Description Remark 10 A 3313 118 A POWER BOARD COMPLETE XR 2750 11 3 012 575 01 PANEL REAR 12 3 340 614 11 SCREW JACK STEP 13 3 012 593 01 BRACKET 14 X 3373 590 1 CHASSIS ASSY 15 3 937 650 01 PLATE C GROUND 16 1 782 344 11 CORD WITH CONNECTOR POWER 17 9 911 840 XX CUTION U 18 3 014 628 01 CHASSIS...

Page 29: ...BOARD COMPLETE XR 2750 68 X 3374 100 1 PANEL SUB ASSY XR 2750 68 X 3374 101 1 PANEL SUB ASSY XR 2753 69 3 016 107 01 SHEET F LCD901 1 801 587 11 DISPLAY PANEL LIQUID CRYSTAL PL901 1 517 633 11 LAMP PILOT PL902 1 517 633 11 LAMP PILOT 51 3 009 301 01 BUTTON BASS 53 3 009 299 01 BUTTON L2 55 3 012 576 01 BUTTON RESET 56 3 009 300 01 BUTTON SOURCE 57 3 009 867 01 BUTTON L 3 r OFF SEEK AMS 0 SEL MUTE ...

Page 30: ...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 31: ...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 32: ...TOR CHIP 3216 JR910 1 216 296 00 CONDUCTOR CHIP 3216 LIQUID CRYSTAL DISPLAY LCD901 1 801 588 11 DISPLAY PANEL LIQUID CRYSTAL PILOT LAMP PL901 1 517 633 11 LAMP 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 5...

Page 33: ...22 1 762 619 11 SWITCH KEY BOARD WITH LED 1 INTRO XR 2753 SW923 1 762 617 11 SWITCH KEY BOARD WITH LED 2 REPEAT XR 2750 SW923 1 762 619 11 SWITCH KEY BOARD WITH LED 2 REPEAT XR 2753 SW924 1 762 617 11 SWITCH KEY BOARD WITH LED 3 XR 2750 SW924 1 762 619 11 SWITCH KEY BOARD WITH LED 3 XR 2753 SW925 1 762 617 11 SWITCH KEY BOARD WITH LED 6 BL SKIP XR 2750 SW925 1 762 619 11 SWITCH KEY BOARD WITH LED ...

Page 34: ...1uF 10 50V C301 1 124 234 00 ELECT 22uF 20 16V C302 1 126 157 11 ELECT 10uF 20 16V C303 1 163 251 11 CERAMIC CHIP 100PF 5 50V C305 1 126 159 11 ELECT 0 47uF 20 50V C306 1 164 232 11 CERAMIC CHIP 0 01uF 50V C307 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V C335 1 124 234 00 ELECT 22uF 20 16V C351 1 163 038 00 CERAMIC CHIP 0 1uF 25V C352 1 124 584 00 ELECT 100uF 20 10V C353 1 163 038 00 CERAMIC CHIP 0 1uF...

Page 35: ...OR CHIP 2012 JR29 1 216 296 00 CONDUCTOR CHIP 3216 JR30 1 216 296 00 CONDUCTOR CHIP 3216 JR31 1 216 295 00 CONDUCTOR CHIP 2012 JR33 1 216 296 00 CONDUCTOR CHIP 3216 JR34 1 216 295 00 CONDUCTOR CHIP 2012 JR39 1 216 296 00 CONDUCTOR CHIP 3216 JR40 1 216 296 00 CONDUCTOR CHIP 3216 JR41 1 216 296 00 CONDUCTOR CHIP 3216 COIL L1 1 410 180 51 INDUCTOR 0 1uH XR 2753 L501 1 410 509 11 INDUCTOR 10uH TRANSIS...

Page 36: ... METAL CHIP 470K 5 1 10W R309 1 249 417 11 CARBON 1K 5 1 4W R351 1 216 049 11 METAL CHIP 1K 5 1 10W R352 1 249 385 11 CARBON 2 2 5 1 6W R353 1 249 385 11 CARBON 2 2 5 1 6W R354 1 216 073 00 METAL CHIP 10K 5 1 10W 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 1 216 073 00 METAL CHIP...

Page 37: ...65 00 FILM 0 1uF 5 50V C776 1 136 165 00 FILM 0 1uF 5 50V C778 1 163 251 11 CERAMIC CHIP 100PF 5 50V C785 1 136 165 00 FILM 0 1uF 5 50V C786 1 136 165 00 FILM 0 1uF 5 50V C787 1 164 232 11 CERAMIC CHIP 0 01uF 50V C789 1 163 251 11 CERAMIC CHIP 100PF 5 50V C790 1 163 251 11 CERAMIC CHIP 100PF 5 50V C791 1 163 251 11 CERAMIC CHIP 100PF 5 50V C795 1 136 165 00 FILM 0 1uF 5 50V C796 1 136 165 00 FILM ...

Page 38: ...82 344 11 CORD WITH CONNECTOR POWER 3 859 732 11 MANUAL INSTRUCTION ENGLISH FRENCH SPANISH TURKISH XR 2750 3 859 732 21 MANUAL INSTRUCTION ENGLISH POLISH BULGARIAN MAGYAR RUSSIAN XR 2753 3 859 733 11 MANUAL INSTRUCTION INSTALL ENGLISH FRENCH SPANISH TURKISH XR 2750 3 859 733 21 MANUAL INSTRUCTION INSTALL ENGLISH POLISH BULGARIAN MAGYAR RUSSIAN XR 2753 PARTS FOR INSTALLATION AND CONNECTIONS 501 3 0...

Page 39: ... 50 Sony Corporation Personal Mobile Communication Company 97C057548 1 Printed in Germany 1997 3 Published by Quality Assurance Dept 9 925 566 11 XR 2750 2753 ...

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