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ICF-CD837

REVISION HISTORY

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Also, clicking the version at the upper on the revised page allows you to jump to the next revised page.

Ver.

Date

Description of Revision

1.0

2005.02

New

1.1

2005.07

Pink print model addition to US model.

(SPM-05107)

Summary of Contents for ICF-CD837

Page 1: ...imit Radio section Frequency range FM 87 5 108 MHz AM 530 1 710 kHz SERVICE MANUAL ICF CD837 Ver 1 1 2005 07 9 879 522 02 2005G04 1 2005 07 US Model Canadian Model E Model Australian Model CD Model Name Using Similar Mechanism ICF CD832 Section CD Mechanism Type KSM 213CDP Optical Pick up Name KSS 213C Sony Corporation Personal Audio Group Published by Sony Engineering Corporation FM AM CD CLOCK R...

Page 2: ...ents or performance of proce dures other than those specified herein may result in haz ardous radiation exposure 1 5 kΩ 0 15 µF AC voltmeter 0 75 V To Exposed Metal Parts on Set Earth Ground SAFETY CHECK OUT After correcting the original service problem perform the follow ing safety check before releasing the set to the customer Check the antenna terminals metal trim metallized knobs screws and al...

Page 3: ...6 1 Cabinet Section 32 6 2 Front Panel Section 33 6 3 Upper Cabinet Section 34 6 4 Lower Cabinet Section 35 6 5 CD Block Section 36 6 6 CD Mechanism Section 37 7 ELECTRICAL PARTS LIST 38 ICF CD837 UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead free mark LF indicating the solder contains no lead Caution Some printed circuit boards may not come printed with the lea...

Page 4: ...OCUS SEARCH OPERATION CHECK 1 Turn ON the POWER button and press CD button to CD position 2 Open the CD lid 3 Turn on S401 with screwdriver etc as following figure 4 Press the N X CD button 5 Confirm the laser diode emission while observing the objecting lens When there is no emission Auto Power Control circuit or Optical Pick up is broken Objective lens moves up and down three times for focus sea...

Page 5: ...s shown in the figure 1 2 POINTER ALIGNMENT power cord MAIN board section pointer A knob tune 1 Turn this in the arrow direction until stopped 2 Fit the protrusion on the pointer in the hole A 3 Align the notch on the boss of the knob tune with the direction of CV1 ...

Page 6: ...OZE SLEEP OFF B U Z Z E R R A D IO C D O F F TIME SET NAP SLEEP CD RADIO O N O F F C LO C K S E T TR A C K ALA R M S E T PUSH OPEN CLOSE A L ARM MODE B A TRACK ALARM PM AM A B FM wire antenna AC power cord The CD button has a tactile dot There is a tactile dot beside volume to show the direction to turn up the volume NAP indicator CD RADIO indicator ALARM SET A ALARM SET B ALARM MODE selector ...

Page 7: ...3 POWER BOARD Page 9 SET 3 9 LID CD Page 12 3 2 FRONT PANEL ASSY Page 8 3 4 MAIN BOARD SECTION Page 9 3 8 OPTICAL PICK UP Page 11 3 6 CD MECHANISM DECK Page 10 3 5 MAIN BOARD CD BLOCK ASSY Page 10 3 11 LED INDICATOR ELEMENT UNIT Page 13 3 12 INDICATOR BOARD DRIVE BOARD Page 13 3 7 CD BOARD Page 11 3 10 LED HOLDER ASSY Page 12 ...

Page 8: ...NET UPPER ASSY Note Follow the disassembly procedure in the numerical order given 1 four screws BV tapping B3 2 two screws BV tapping B3 5 cabinet upper assy 4 CNP602 3 3 two screws BV tapping B3 5 front panel assy 1 CNP302 2 CNP402 pointer 4 ...

Page 9: ... SECTION 1 Set the FM wire antenna as shown in the figure 3 two screws BV tapping B3 4 bracket trans 5 POWER board 1 CNP901 2 CNP303 3 four screws BV tapping B3 4 MAIN board section FM wire antenna 1 two screws BV tapping B3 2 BRIGHTNESS board ...

Page 10: ...6 CD MECHANISM DECK 3 5 MAIN BOARD CD BLOCK ASSY 1 three screws BV tapping B3 2 CNP703 3 CD block assy 4 MAIN board 1 two screws PWH tapping B2 6 4 CD cover 5 CD mechanism deck 3 chassis 2 two screws PWH tapping B2 6 ...

Page 11: ...CF CD837 3 8 OPTICAL PICK UP 3 7 CD BOARD 2 Remove the two solders of motor 3 Remove the two solders of motor 4 CNP701 5 CD board 1 screw BVTT 2 6 S 1 gear A 2 claw 4 sled shaft 5 optical pick up 3 Ver 1 1 ...

Page 12: ...12 ICF CD837 3 9 LID CD 3 10 LED HOLDER ASSY 1 boss 3 boss 4 boss 5 lid CD spring CD 2 boss 1 two screws BV tapping B3 2 two screws BV tapping B3 3 LED holder assy panel front sub assy ...

Page 13: ...37 3 11 LED INDICATOR ELEMENT UNIT 3 12 INDICATOR BOARD DRIVE BOARD 1 CNP502 3 LED indicator element unit 2 Remove the solder DRIVE board 1 two screws BV tapping B2 6 3 claw 2 INDICATOR board 5 DRIVE board 4 claw ...

Page 14: ...ation See page 15 TUNER SECTION 0 dB 1 µV SECTION 4 ELECTRICAL ADJUSTMENTS FM Section Setting BAND switch FM VOLUME control MIN FM lead wire antenna terminal FM RF signal generator 0 01 µF set 75 kHz frequency deviation by 1 kHz signal output level as low as possible Put the lead wire antenna close to the set AM RF signal generator AM Section Setting BAND switch AM VOLUME control MIN 30 amplitude ...

Page 15: ...BIAS CHECK 1 Connect the oscilloscope between IC701 pin 4 and pin qa or TP RF and TP VREF 2 Insert the disc YEDS 18 Part No 3 702 101 01 3 Press the N X CD button 4 Confirm that the oscilloscope waveform is as shown in the figure below eye pattern A good eye pattern means that the diamond shape in the center of the waveform can be clearly distinguished RF signal reference waveform eye pattern Test...

Page 16: ...16 ICF CD837 MEMO ...

Page 17: ...MIN HFL AGC PH RFENV FE TE VREF CONT1 FSEQ CONT4 DRF RES DI CE CL WRQ DO XOUT XIN LCHO RCHO A 3 67 TDD TD FD SP SL 31 72 25 66 63 61 62 49 48 65 64 42 45 RF AMP SYSTEM SERVO PROCESSOR DIGITAL SIGNAL PROCESSOR IC701 40 57 39 54 56 55 50 53 58 X701 16 93MHz LAT DATA CLK WRQ XRST DRF FSEQ DATA IN CD CD OPEN SYSTEM CONTROLLER IC401 1 2 S401 PUSH OPEN CLOSE CLV CAV CONTROL PLL VCEC SWITCH ERROR CORRECT...

Page 18: ...W901 F901 D901 US MX CND AUS D902 D903 906 Q902 903 6V 3 3V CD B 11V 6V REG LED DRIVE LED DRIVE VOLTAGE CHECK Q905 RIPPLE FILTER B SWITCH B SWITCH Q401 D401 IC402 S401 MUTE DRIVE Q301 Q515 3 3V MIX AMP Q101 102 Q102 Q104 IC401 2 2 SYSTEM CONTROL A MUT BUZZER POWER ON SEG13 50 60Hz AC IN RADIO ON CD ON VREF COM1 17 SEG15 14 SEG14 COM2 CD OPEN KEY1 X2 74 X1 71 X401 32KHz XT2 70 XT1 SW2 SW0 SW1 CD RA...

Page 19: ...f AM J CD PLAY Abbreviation CND Canadian model MX Mexican model AUS Australian model for printed wiring boards X parts extracted from the component side Y parts extracted from the conductor side W indicates side identified with part number f internal component Pattern from the side which enables seeing The other layer s patterns are not indicated C B These are omitted E Q B These are omitted C Q Q...

Page 20: ...C709 FB701 C736 C734 R709 C705 R710 R701 C703 C731 R706 R727 R712 R723 C708 R741 JC701 R744 C751 JC702 JC703 C743 C744 C742 C754 C755 C741 C707 L706 C739 C738 R732 R742 R735 R704 R733 R702 R734 R703 R746 R743 R705 R736 R747 R738 R711 R713 R737 C716 C722 C717 C745 M702 M701 S701 C732 CNP701 X701 CNP702 JW706 JW707 JW709 JW713 JW714 JW715 JW716 JW717 JW718 JW721 JW722 JW723 JW724 JW725 JW726 JW727 J...

Page 21: ...C708 C742 C740 C709 R731 R727 R728 C744 FB701 C717 C735 R723 C728 C702 S701 C730 C707 C706 TP TP C711 C747 C746 C701 C739 IC702 JC702 JC701 C738 C705 C734 C736 JC703 IC701 X701 C716 Q701 C733 C750 R746 R741 R711 R747 R732 R714 R715 L706 C729 R737 R726 R742 R713 R743 CNP702 C724 C720 C722 C723 C721 C727 C726 C725 R730 R729 R738 R725 R720 R719 R722 R701 R706 R702 R703 R704 R705 R733 R734 R735 R736 C...

Page 22: ... CV1 1 CV1 4 CT1 CT4 C31 C3 R1 C204 C103 C104 R15 C36 BPF1 C21 L6 L2 S1 CF3 CF2 CF1 JW326 R3 R4 R912 C419 C422 C420 C423 C424 C425 C426 C427 C428 C429 C430 R427 R428 R429 R430 R432 R433 R434 R435 R436 R437 R438 R439 R469 R411 C461 R426 R409 R401 C457 R468 C456 R467 R402 R403 R404 R405 R406 R407 C401 C402 C403 C404 C405 C406 C407 R904 C911 D909 D911 R905 R906 R903 R910 R464 R465 R466 R909 C925 C924...

Page 23: ...01 R439 R438 R437 R436 R435 C425 C302 R301 L1 ANT1 R13 S651 R657 R658 R655 R656 R653 R654 R651 R652 R1 C38 C20 C23 C42 JC4 JC6 C103 C104 C203 C204 C29 R15 CF3 L6 TP202 TP102 C207 R203 R221 C208 C108 C107 R103 R121 C210 R204 C110 R104 R205 R105 C211 C212 R207 R206 R208 R209 R106 C112 R107 R108 R109 C206 C106 TP201 TP101 C205 C105 R222 C213 C113 R122 R110 CNP303 Q902 R910 R911 R906 Q904 R908 C914 C9...

Page 24: ...6 8 1 Q681 D681 B C E Q502 B C E Q503 B C E Q504 B C E 6 2 5 1 CNP502 CNP501 18P LED501 LED INDICATPR UNIT 1 17 2 18 10 CNP503 1 2 10 20 28 27 4 1 W604 GRY RED GRY RED GRY RED GRY RED 4 1 1 865 671 11 11 1 865 673 11 11 Q505 B C E Q506 B C E Q507 B C E Q508 B C E Q509 B C E Q510 B C E Q511 B C E Q512 B C E Q513 B C E Q514 B C E Q516 B C E Q515 B C E Q517 B C E INDICATOR BOARD DRIVE BOARD E B Page ...

Page 25: ...E BOARD CNP601 R609 R610 R601 S601 S601 ALARM RESET x OFF S603 CD u S604 S609 Z PUSH OPEN CLOSE S605 SLEEP S608 NAP S602 S602 RADIO ON S603 S605 R619 S608 S606 1 2 5 6 S609 S604 W402 S610 S611 ALARM MODE B OFF CD RADIO BUZZER S612 ALARM MODE A OFF CD RADIO BUZZER ALARM SET B ALARM SET A S607 S607 CLOCK SET TRACK S653 S653 R602 R603 R604 R605 R606 TIME SET E 5 9 PRINTED WIRING BOARD KEY SECTION Ref...

Page 26: ...R516 R517 CNP503 CNP601 Q681 Q682 D681 C681 C682 R681 R682 S612 S611 R631 R632 R629 R630 R627 R628 R625 R626 R605 R614 R615 R616 R617 R623 R620 R621 R619 R601 R603 R608 R612 R609 R610 CNP602 LED501 R519 S401 D682 R502 R503 R504 R505 R506 R507 R508 R509 R510 R511 R512 R513 R514 R501 S601 S602 S603 S604 S605 S606 S653 S607 S608 S609 S610 R606 R602 R604 R641 R639 R637 R635 R640 R638 R636 R634 Page 23...

Page 27: ... JW901 F901 JW908 JW910 JW907 1 7 CNP302 SP101 SPEAKER L CH SP201 SPEAKER R CH 4 1 12 6 7 1 1 W302 4 BH901 L902 TM901 TM902 L901 6 1 B C E B C E B C E R303 R304 C303 C907 R901 C119 R118 C219 R218 C311 R119 C118 R116 C309 C121 C221 C308 C909 T901 TRANSFORMER AC IN 1 865 669 11 R117 C304 R219 R216 R217 C218 R214 R114 R215 R213 C116 R115 C908 C120 C220 R902 C901 D902 D901 C902 C903 C905 C904 C312 C21...

Page 28: ...R304 R303 L902 C907 L901 JW901 R902 W302 CNP302 R220 C220 R120 C120 R307 R219 R119 C219 C119 R115 R215 R214 R114 C216 C116 R213 R113 BH303 C304 C305 R305 R217 R117 TP303 R218 R118 R116 R216 F901 R901 C908 C909 C312 BH901 C218 C118 C311 C221 C121 C309 C308 T901 Q204 Q104 C901 C902 C903 C904 C905 C906 D901 D902 D903 D904 D905 D906 Page 23 Page 23 Ver 1 1 ...

Page 29: ... SLCO SLCIST EFMIN RF FIN1 FIN2 TIN1 TIN2 VREF REFI FE TEC TE RFMON JITTC JITTC ADAVDD ADAVSS ADAVDD ADAVSS TDO DATA DATACK LRSY ASDFIN ASDACK ASLRCK DATA DATACK LRSY RVDD RVSS RCHO LCHO LVSS LVDD ASDFIN ASDACK ASLRCK 16MOUT EFLG C2F FSX 16MIN EFLG C2F FSX 16MIN XVSS XIN XOUT XVDD 16MOUT XVSS XIN XOUT XVDD RVDD RCHO RVSS LVSS LCHO LVDD DATA DATACK LRSY ASDFIN ASDACK ASLRCK 16MOUT EFLG C2F FSX 16MI...

Page 30: ... IC702 BA5826FP E2 CD Board IC301 LA4627 POWER Board AM RF IN FM RF OUT FM RF IN RF GND AM LOW CUT MIX OUT AGC VCC AM IF IN FM IF IN GND TUN LED ST LED QUAD FM OSC AM OSC AFC DET OUT MPX IN LPF2 LPF1 L OUT R OUT 7 5 4 3 1 2 6 8 9 12 10 11 14 15 16 17 18 19 21 20 24 23 RF VCC 22 13 DECODER VCO DIVIDER ST MONO FM AM AF AMP FM MUTE AF BUFFER FM DET AM DET AM RF AMP FM RF AMP FM MIX FM OSC AM OSC AM M...

Page 31: ...IN CD I CD serial data input 54 DATA I O CD serial data input ouput 55 CLK O CD serial clock output 56 LAT O CD latch signal output 57 DRF I CD DRF signal input 58 XRST O CD reset signal output 59 A MUT O Audio mute control signal output 60 POWER ON O Power AMP standby control signal output 61 NC O Not used Pull down 62 to 68 SEG14 to SEG8 O LED segment driver signal output 69 IC I Not used Pull d...

Page 32: ...RED Parts Color Cabinet s Color Print color PINK Color of printer graphic of LID CD Accessories are given in the last of this parts list R R The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part number specified Les composants identifiés par une marque 0 sont critiques pour la sécurité Ne les remplacer que par une piéce portant le numéro spéc...

Page 33: ...FRONT SUB ASSY GRAY WHITE Print color BLUE AUS 56 X 2055 495 1 PANEL FRONT SUB ASSY BLACK BLACK 56 X 2067 858 1 PANEL FRONT SUB ASSY SILVER WHITE Print color PINK US 57 1 830 248 11 CABLE FLEXIBLE FLAT 18 CORE 58 1 830 247 11 CABLE FLEXIBLE FLAT 6 CORE 59 3 254 944 01 INDICATOR 60 3 831 441 11 CUSHION CABINET UPPER 10X7X0 5 CNP501 1 779 286 11 CONNECTOR FFC LIF NON ZIF 18P LED501 1 479 172 11 ELEM...

Page 34: ... B3 BV TAPPING 108 3 252 827 01 SCREW B2 6 BV TAPPING 109 A 1094 510 A KEY BOARD COMPLETE 110 2 541 547 01 ADAPTOR 111 2 541 541 01 BUTTON ALARM A BLUE WHITE BLACK 111 2 541 541 11 BUTTON ALARM A PINK WHITE 112 2 541 542 01 BUTTON ALARM B BLUE WHITE BLACK 112 2 541 542 11 BUTTON ALARM B PINK WHITE 113 2 541 546 01 KNOB ALARM B WHITE WHITE Print color BLUE 113 2 541 546 11 KNOB ALARM B BLACK BLACK ...

Page 35: ...9 3 382 175 71 KNOB V WHITE WHITE 160 A 1094 524 A POWER BOARD COMPLETE US MX 160 A 1097 513 A POWER BOARD COMPLETE AUS 160 A 1106 404 A POWER BOARD COMPLETE CND 161 1 830 246 11 CABLE FLEXIBLE FLAT 28 CORE 162 2 541 553 01 HOLDER ANTENNA 163 A 1094 517 A MAIN BOARD COMPLETE Print color BLUE 163 A 1141 206 A MAIN BOARD COMPLETE Print color PINK ANT1 1 754 372 11 ANTENNA FM WIRE 0F901 1 533 450 12 ...

Page 36: ...BLE FLAT 14 CORE 206 7 685 853 04 SCREW BVTT 2X6 S 207 A 4542 980 A CD BOARD COMPLETE 208 3 046 853 01 RUBBER VIBRATION PROOF RED 209 2 541 551 01 CHASSIS US CND MX 209 2 541 551 11 CHASSIS AUS 210 2 596 504 01 CUSHION A 211 2 596 505 01 CUSHION B Ref No Part No Description Remark Ref No Part No Description Remark 6 5 CD BLOCK SECTION 203 201 202 203 204 205 206 207 208 209 210 210 211 211 Ver 1 1...

Page 37: ...ponents identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part number specified Les composants identifiés par une marque 0 sont critiques pour la sécurité Ne les remplacer que par une piéce portant le numéro spécifié 255 X 2162 709 2 CHASSIS ASSY CDP MOTOR SPINDLE including M701 256 2 626 907 11 GEAR A M702 X 2625 769 1 GEAR ASSY MB RP MOTOR SLED not supplie...

Page 38: ...64 156 11 CERAMIC CHIP 0 1uF 25V C739 1 164 156 11 CERAMIC CHIP 0 1uF 25V C740 1 126 925 11 ELECT 470uF 20 10V C741 1 164 156 11 CERAMIC CHIP 0 1uF 25V C742 1 164 156 11 CERAMIC CHIP 0 1uF 25V C743 1 164 156 11 CERAMIC CHIP 0 1uF 25V C744 1 164 156 11 CERAMIC CHIP 0 1uF 25V C745 1 164 156 11 CERAMIC CHIP 0 1uF 25V C746 1 104 658 11 ELECT 100uF 20 10V C747 1 104 658 11 ELECT 100uF 20 10V C750 1 104...

Page 39: ...METAL CHIP 2 2K 5 1 10W R747 1 216 821 11 METAL CHIP 1K 5 1 10W SWITCH S701 1 571 936 11 SWITCH LEAF LIMIT VIBRATOR X701 1 781 801 21 VIBRATOR CERAMIC 16 93MHz A 1094 529 A DRIVE BOARD COMPLETE CONNECTOR CNP502 1 779 286 11 CONNECTOR FFC LIF NON ZIF 18P CNP503 1 784 789 11 CONNECTOR FFC 28P CNP601 1 779 543 21 CONNECTOR FFC LIF NON ZIF 6P TRANSISTOR Q501 8 729 028 73 TRANSISTOR DTA114EUA T106 Q502...

Page 40: ... 1 10W R639 1 216 837 11 METAL CHIP 22K 5 1 10W R640 1 216 837 11 METAL CHIP 22K 5 1 10W R641 1 216 837 11 METAL CHIP 22K 5 1 10W SWITCH S601 1 771 349 21 SWITCH TACTILE ALARM RESET x OFF S602 1 771 349 21 SWITCH TACTILE RADIO ON S603 1 771 349 21 SWITCH TACTILE CD u S604 1 771 349 21 SWITCH TACTILE TIME SET S605 1 771 349 21 SWITCH TACTILE SLEEP S606 1 786 050 21 SWITCH KEYBOARD SNOOZE SLEEP OFF ...

Page 41: ... 0 001uF 10 50V C429 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C430 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C433 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C434 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C435 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C436 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C437 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C438 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C439 1 162 970 11 CERAMI...

Page 42: ...1 10W R106 1 216 821 11 METAL CHIP 1K 5 1 10W R107 1 216 809 11 METAL CHIP 100 5 1 10W R108 1 216 825 11 METAL CHIP 2 2K 5 1 10W R109 1 216 833 11 METAL CHIP 10K 5 1 10W R110 1 216 825 11 METAL CHIP 2 2K 5 1 10W R121 1 216 833 11 METAL CHIP 10K 5 1 10W R122 1 216 829 11 METAL CHIP 4 7K 5 1 10W R201 1 216 845 11 METAL CHIP 100K 5 1 10W R202 1 216 829 11 METAL CHIP 4 7K 5 1 10W R203 1 216 829 11 MET...

Page 43: ...ETAL CHIP 2 2K 5 1 10W R912 1 216 841 11 METAL CHIP 47K 5 1 10W R913 1 216 845 11 METAL CHIP 100K 5 1 10W VARIABLE RESISTOR RV301 1 225 764 12 RES VAR CARBON 20KX2 VOLUME SWITCH S1 1 692 181 21 SWITCH SLIDE BAND BLACK WHITE BLACK S1 1 692 181 51 SWITCH SLIDE BAND GRAY WHITE COIL T1 1 424 703 11 COIL AM IFT VIBRATOR X401 1 760 252 12 VIBRATOR CRYSTAL 32kHz X402 1 795 054 21 VIBRATOR CERAMIC 4 19MHz...

Page 44: ...RMINAL AUS TM902 1 535 771 31 TERMINAL AUS MISCELLANEOUS 57 1 830 248 11 CABLE FLEXIBLE FLAT 18 CORE 58 1 830 247 11 CABLE FLEXIBLE FLAT 6 CORE 102 1 452 899 11 MAGNET 0151 1 757 636 11 CORD POWER US CND 0151 1 769 339 82 CORD POWER MX 0151 1 790 431 21 CORD POWER AUS 161 1 830 246 11 CABLE FLEXIBLE FLAT 28 CORE 204 1 962 805 11 CABLE FLEXIBLE FLAT 16 CORE 205 1 830 245 11 CABLE FLEXIBLE FLAT 14 C...

Page 45: ...45 ICF CD837 MEMO ...

Page 46: ... allows you to jump to the revised page Also clicking the version at the upper on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 2005 02 New 1 1 2005 07 Pink print model addition to US model SPM 05107 ...

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