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Sony XR-4900, Service Manual

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Sony XR-4900 Service Manual Download Page 20

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XR-4900

6-2. SCHEMATIC DIAGRAM — MAIN (1/2) SECTION —

• Refer to page 18 for Waveforms.

• Refer to page 19 for Printed Wiring Board.

• Refer to page 29 for IC Block Diagrams.

w w w . x i a o y u 1 6 3 . c o m

Q Q 3 7 6 3 1 5 1 5 0

9

9

2

8

9

4

2

9

8

T E L

1 3 9 4 2 2 9 6 5 1 3

9

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

Q

TEL  13942296513  QQ  376315150  892498299 

TEL  13942296513  QQ  376315150  892498299 

http://www.xiaoyu163.com

http://www.xiaoyu163.com

Summary of Contents for XR-4900

Page 1: ...R 4900 FM MW SW CASSETTE CAR STEREO Continued on next page MICROFILM SERVICE MANUAL www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 2: ...C Pin Function Description 31 7 EXPLODED VIEWS 33 8 ELECTRICAL PARTS LIST 36 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 when soldering or unsoldering Notes on chip component replacement Never reuse a...

Page 3: ...rom instruction manual www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 4: ... QQ 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 5: ...63 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 6: ...63 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 7: ...63 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 8: ...63 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 9: ... button release 2 Remove the front panel ass y to the direction of the arrow A A 1 1 1 2 2 2 3 cover ass y www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 10: ...N301 3 Two ground point screws 5 two screws PTT 2 6 8 5 two screws PTT 2 6 10 1 screw PTT2 6 8 5 two screws PTT 2 6 8 6 heat sink 2 rubber cap 25 1 two screws PTT2 6 8 4 main board www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoy...

Page 11: ...hanger onto two claws of the housing 3 Put the housing under A part D part B part A part C part 8 Hold 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 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 8924...

Page 12: ...G D with hole the lever LDG A 5 gear LDG FT 6 polyethylene washer 3 Move the lever LDG B in the arrow direction 2 tensiton spring LD 1 2 tensiton spring LD 2 gear LDG FB lever LDG A hole hole gear LDG D 1 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiao...

Page 13: ...stan reel motor M901 2 Two precision screws P 2 2 1 Belt 30 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 14: ...he preset 5 button 5 Press the preset 1 button for more than two seconds 6 Then the display indicates all lights the test mode is set Release the Test mode 1 Push the OFF button 2 Return the power select switch S501 to initially set posi tion See the adjustment location from on page 17 for the adjustment 0 dB 0 775 V TAPE DECK SECTION Tape Speed Adjustment Setting Speed checker Frequency counter 1...

Page 15: ...ton FM FREQUENCY SELECT switch FM200 k Procedure 1 Set to the test mode See page 14 2 Push the SOURCE button and set to FM Display 3 Adjust with the volume RV2 on TU1 so that the FM indica tion turns to FM indication on the display window But in case of already indicated FM turn the RV2 so that put out light indication and adjustment Display 0 dB 1 µV FM RF signal generator Carrier frequency 97 9 ...

Page 16: ...e display window But in case of already indicated MW turn the RV1 so that put out light indication and adjustment Display Adjustment Location See page 17 AM RF signal generator Carrier frequency 1000 kHz 30 amplitude modulation by 1 kHz signal Output level 33 dB 44 7 µV 50 Ω set AM dummy antenna 30 Ω 15 pF 65 pF antenna jack J1 MW 1000SHUF 1000SHUF www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 T...

Page 17: ...t RV 2 FM Auto Scan Stop Level Adjustment RV 4 FM Stereo Separation Adjustment www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 18: ...tage and waveforms are dc with respect to ground under no signal conditions no mark FM TAPE PLAYBACK Impossible to measure Voltages are taken with aVOM Input impedance 10 MΩ Voltage variations may be noted due to normal production tolerances Waveforms are taken with a oscilloscope Voltage variations may be noted due to normal production tolerances Circled numbers refer to waveforms Signal path F F...

Page 19: ...31 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 K 12 IC611 E 14 IC751 B 7 Q51 E 11 Q52 E 11 Q121 G 4 Q151 G 6 Q171 A 4 Q181 A 3 Q252 G 6 Q251 G 6 Q271 A 3 Q281 B 3 Q351 H 13 Q352 H 12 Q353 H 12 Q354 H 12 Q551 I 10 Q571 D 9 Q581 G 11 Q583 F 9 Q591 F 11 Q592 F 10 Q601 J 13 Q602 J 12 Q621 F 7 Q622 F 7 19 20 XR 4900 Page 26 w w w x i a o y u 1 6 3 c ...

Page 20: ... Wiring Board Refer to page 29 for IC Block Diagrams w w w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 21: ...Board Refer to page 29 for IC Block Diagrams XR 4900 w w w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 22: ...miconductor Location D902 B 12 D903 B 12 D904 B 11 D951 C 9 Q945 C 2 w w w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 23: ...w w w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 24: ... SEEK RECP SEEK RECP SIG 4BIT SWALLOW COUNTER OUTPUT PORT 1 2 3 4 5 6 7 8 9 10 VCC IN2 S GND IN1 NC NC OUT2 NC P GND OUT1 CONTROL CIRCUIT MOTOR DRIVE CIRCUIT BUFFER BUFFER IC351 LB1930M TLM 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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 TAB PW GND OUT2 ST BY OUT2 Vcc1 OUT1 ...

Page 25: ...I Remote control input 30 TELMUT I TELEPHONE MUTE detection input 31 TEST IN I Test mode setting input terminal 32 RAMBU I Reset detection input of RAM 33 RESET I Reset input terminal 34 VOL MUT O Not used 35 BEEP O Control output for buzzer 36 AMPMUT O Power amplifier mute control output terminal 37 AMPON O Power amplifier STANDBY control terminal 38 PLL CKO O PLL CLK output terminal 39 PLL CE O ...

Page 26: ...84 POS3 I 85 POS2 I 86 POS0 I 87 POS1 I 88 LM LOD O Loading motor control output to a direction of loading 89 LM EJ O Loading motor control output to a direction of ejection 90 TAPON O TAPE power supply control output When on is output H is output otherwise when off is output L is output 91 CM ON O Capstan motor control signal output terminal of TAPE 92 PW ON O System power supply control output 9...

Page 27: ...tion Remark 10 3 018 390 01 BRACKET IC 11 3 031 026 01 HEAT SINK 12 3 935 014 01 CUSHION U 13 3 009 813 42 CHASSIS 14 3 012 859 01 CAP 25 RUBBER 15 3 937 650 01 PLATE C GROUND F781 1 532 877 11 FUSE BLADE TYPE AUTO FUSE 10A 1 3 031 022 01 PANEL SUB 2 3 935 003 01 SPRING TORSION 3 3 027 437 01 DOOR CASSETTE 4 X 3367 437 1 LOCK ASSY 5 3 033 846 01 INSULATED PLATE 6 A 3317 521 A MAIN BOARD COMPLETE 7...

Page 28: ...51 3 030 838 01 BUTTON RELEASE 52 3 030 832 01 LEVER S A 53 3 932 475 01 SPRING RELEASE 54 3 030 834 01 BUTTON M S 55 3 030 835 01 BUTTON 1 6 56 3 031 027 11 BUTTON P P A 57 3 030 831 01 BUTTON SOURCE 58 3 030 830 11 KNOB VOL 60 3 030 837 01 BUTTON D BASS 57 58 60 65 54 66 53 51 52 56 5 5 5 C B C B A A 55 not supplied KEY board 64 62 61 67 63 LCD901 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 ...

Page 29: ...91 667 A CLUTCH FR ASSY 152 3 019 130 01 LEVER LDG A 153 3 019 131 01 LEVER LDG B 154 3 020 539 01 SPRING LD 1 TENSION 155 3 020 540 01 SPRING LD 2 TENSION 156 3 020 542 01 GEAR LOADING FT 157 3 341 753 11 WASHER POLYETHYLENE 158 3 020 533 01 HOUSING 159 3 020 532 01 ARM SUCTION 160 3 020 534 01 HANGER 160 161 162 164 165 166 167 151 168 168 159 158 155 156 157 154 153 152 163 HP901 M901 7 6 A A w...

Page 30: ...1 771 609 11 SWITCH TACTILE WITH LED 5 ENTER LSW930 1 771 609 11 SWITCH TACTILE WITH LED 4 n LSW931 1 771 609 11 SWITCH TACTILE WITH LED 3 PLAY MODE LSW932 1 771 609 11 SWITCH TACTILE WITH LED 2 SET UP LSW933 1 771 609 11 SWITCH TACTILE WITH LED 1 N PILOT LAMP PL901 1 517 633 21 LAMP PILOT PL902 1 517 633 21 LAMP PILOT TRANSISTOR Q945 8 729 900 53 TRANSISTOR DTC114EK RESISTOR R901 1 216 647 11 MET...

Page 31: ...0V C104 1 164 489 11 CERAMIC CHIP 0 22uF 10 16V C105 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V C106 1 164 505 11 CERAMIC CHIP 2 2uF 16V C107 1 163 263 11 CERAMIC CHIP 330PF 5 50V C108 1 164 505 11 CERAMIC CHIP 2 2uF 16V C109 1 163 227 11 CERAMIC CHIP 10PF 0 5PF 50V C110 1 163 227 11 CERAMIC CHIP 10PF 0 5PF 50V C111 1 163 227 11 CERAMIC CHIP 10PF 0 5PF 50V C121 1 163 989 11 CERAMIC CHIP 0 033uF 10 25V...

Page 32: ...077 00 CERAMIC CHIP 0 1uF 10 25V C789 1 163 077 00 CERAMIC CHIP 0 1uF 10 25V C790 1 163 077 00 CERAMIC CHIP 0 1uF 10 25V C792 1 163 077 00 CERAMIC CHIP 0 1uF 10 25V C795 1 109 982 11 CERAMIC CHIP 1uF 10 10V C993 1 163 251 11 CERAMIC CHIP 100PF 5 50V CONNECTOR CN301 1 766 260 11 CONNECTOR FFC FPC ZIF 7P CN351 1 506 995 11 PIN CONNECTOR PC BOARD 13P CN701 1 785 774 11 PLUG CONNECTOR 15P CN781 1 774 ...

Page 33: ... 1 410 989 11 INDUCTOR CHIP 0 47uH L501 1 410 989 11 INDUCTOR CHIP 0 47uH L781 1 411 669 21 INDUCTOR 0uH TRANSISTOR Q51 8 729 106 68 TRANSISTOR 2SD1615A GP Q52 8 729 106 68 TRANSISTOR 2SD1615A GP Q53 8 729 020 67 TRANSISTOR XN1A312 TX Q121 8 729 920 21 TRANSISTOR DTC314TKH04 Q151 8 729 920 21 TRANSISTOR DTC314TKH04 Q171 8 729 920 21 TRANSISTOR DTC314TKH04 Q181 8 729 920 21 TRANSISTOR DTC314TKH04 Q...

Page 34: ...6 049 11 RES CHIP 1K 5 1 10W R506 1 216 049 11 RES CHIP 1K 5 1 10W R507 1 249 417 11 CARBON 1K 5 1 4W F R508 1 249 417 11 CARBON 1K 5 1 4W F R509 1 249 417 11 CARBON 1K 5 1 4W F R510 1 247 807 31 CARBON 100 5 1 4W R511 1 216 206 00 RES CHIP 2 2K 5 1 8W R512 1 216 246 00 RES CHIP 100K 5 1 8W R513 1 216 057 00 METAL CHIP 2 2K 5 1 10W R514 1 247 807 31 CARBON 100 5 1 4W R517 1 216 246 00 RES CHIP 100...

Page 35: ...H TACTILE RESET TUNER TU1 A 3220 695 A FM AM TUNER UNIT TUX 011 EA VIBRATOR X21 1 781 246 21 VIBRATOR CRYSTAL 10 25MHz X501 1 781 294 21 VIBRATOR CRYSTAL 18 432MHz X502 1 567 098 41 VIBRATOR CRYSTAL 32 768kHz MISCELLANEOUS 9 1 776 207 82 CORD WITH CONNECTOR POWER 63 1 694 508 11 CONDUCTIVE BOARD CONNECTION F781 1 532 877 11 FUSE BLADE TYPE AUTO FUSE 10A HP901 1 500 157 21 HEAD MAGNETIC PLAYBACK LC...

Page 36: ... in Singapore 1999 2 Published by Quality Assurance Dept XR 4900 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

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