Sony ICF-CD820 - Cd/am/fm Stereo Clock Radio Service Manual Download Page 1

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MICROFILM

SERVICE MANUAL

CD CLOCK RADIO

US Model

Canadian Model

E Model

Australian Model

ICF-CD820

AEP Model

ICF-CD820/CD820L

UK Model

ICF-CD820L

Model Name Using Similar Mechanism

CFD-550

Optical Device Name

KSM-213BAN

Optical Pick-UP Name

KSS-213B

SPECIFICATIONS

ICF-CD820/CD820L

Summary of Contents for ICF-CD820 - Cd/am/fm Stereo Clock Radio

Page 1: ...US Model Canadian Model E Model Australian Model ICF CD820 AEP Model ICF CD820 CD820L UK Model ICF CD820L Model Name Using Similar Mechanism CFD 550 Optical Device Name KSM 213BAN Optical Pick UP Name KSS 213B SPECIFICATIONS ICF CD820 CD820L ...

Page 2: ...PONENTS IDENTIFIED BY MARK OR DOTTED LINE WITH MARK ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB LISHED BY SONY SECTION 1 SERVICING NOTES MODEL IDENTIFICATION HOW TO CHANGED THE CERAMIC FILTERS This model is used two ceramic filters of CF2 CF3 You must ...

Page 3: ...15 µF AC voltmeter 0 75 V To Exposed Metal Parts on Set Earth Ground The laser diode in the optical pick up block may suffer electro static break down because of the potential difference generated by the charged electrostatic load etc on clothing and the human body During repair pay attention to electrostatic break down and also use the procedure in the printed matter which is included in the repa...

Page 4: ... diode emission while observing the ob jecting lens When there is no emission Auto Power Control circuit or Optical Pick up is broken Objective lens moves up and down once for the focus search SECTION 2 GENERAL This section is extracted from instruction manual Insert a precision screwdriver and push S420 laser diode emission ...

Page 5: ... 5 ...

Page 6: ...ed in the order shown below 2 Open the CD lid ass y 1 screw P3 14 4 upper cabinet ass y 3 screw P3 14 3 two screws P3 14 5 flat cable CNP401 3 three screws P3 14 6 connector CNP302 except CD820 US Canadian 6 connector CNP301 CD820 US Canadian SET UPPER CABINET ASS Y CD LID ASS Y MAIN BOARD AND OPTICAL PICK UP SECTION DIAL POINTER SETTING ...

Page 7: ... hinge plate 1 Open the CD lid ass y 2 CD lid spring 1 switch board 9 optical pick up section 3 screw BTP3 10 0 flat cable CNP501 7 screw P3 14 3 three screws BTP3 10 6 main board 5 connector CNP303 except CD820 US Canadian connector CNP502 4 screw PTP3 14 3 screw BTP3 10 2 lead wire CN901 8 claw ...

Page 8: ... 4 Set the MAIN board pointer Fig 2 Fig 1 marker claw Fig 3 CV1 3 Turn the shaft CV1 to the arrow direction from the pattern side perfectly Fig 3 2 Fit A portion and fit a claw to the hole of axle side and catch in to pointer gear Fig 2 pointer A 1 Set the pointer at the marker line Fig 1 ...

Page 9: ...L AEP UK Adjust for a maximum reading on level meter L1 2 160 kHz CT5 240 kHz Repeat the procedures in each adjustment several times and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter L3 87 5 MHz CT2 108 0 MHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level me...

Page 10: ...ncy counter 33 k Ω MAIN Board IC1 Pin 7 Adjustment Location T1 AM IF Adjustment RV1 FM Stereo Adjustment 76 kHz L1 2 CD820L AEP UK LW Tracking Adjustment L2 CT1 FM Tracking Adjustment CT3 L1 L1 1 Except CD820L FR AM MW Tracking Adjustment CD820L FR LW Tracking Adjustment CT5 CD820L AEP UK LW Tracking Adjustment L4 CT4 CD820L AEP UK AM MW Frequncy Coverage Adjustment CD820L FR LW Frequency Coverage...

Page 11: ...ing or noise 6 Confirm the traverse waveform 7 Press the WAKE UP TRACK key 8 The tracking servo and the sled servo are turned on the mute is cancelled the test pattern display on LCD disappears and normal CD mode becomes active 9 Adjust the RF and jitter waveforms LCD Display Connecting points MAIN Board See page 13 Focus Bias Adjustment This adjustment is to be done when the optical block is repl...

Page 12: ...the primary adjustment are only a little different return the controls to the original position Connection The time until music starts becomes longer for STOP PLAY or automatic selection buttons pressed Normally takes about 2 seconds Music does not start and disc continues to rotate for STOP PLAY or automatic selection buttons pressed Sound is interrupted during PLAY Or time counter display stops ...

Page 13: ... 13 Adjustment Location MAIN Board Conductor Side IC502 IC501 TP RF TP VREF TP FE IC401 TP TEST TP GND MAIN Board Component Side RV502 Focus Gain Adjustment RV501 Focus Bias Adjustment ...

Page 14: ... 14 SECTION 5 DIAGRAMS Circuit Boards Location POWER board MAIN board JACK board Except CD820 US Canadian MOTOR board SWITCH board KEY board ...

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Page 17: ...DIV 6 IC501 TET PLAY MODE 500 mV DIV 1 ms DIV 7 IC502 FOK PLAY MODE 50 mV DIV 2 ms DIV 8 IC502 1 SCOR PLAY MODE 5 V DIV 5 ms DIV 9 IC502 XTAO PLAY MODE 2 V DIV 50 ns DIV 0 IC502 XTAI PLAY MODE 500 mV DIV 50 ns DIV 1 7 Vp p 4 19 MHz 6 3 Vp p 4 19 MHz 4 8 Vp p 32 kHz 2 4 Vp p 32 kHz 1 3 0 5 Vp p Approx 138 mVp p Approx 120 mVp p 4 Vp p 5 9 ms 6 7 Vp p 16 93 MHz 1 4 Vp p 16 93 MHz ...

Page 18: ... 25 IC502 WFCK PLAY MODE 2 V DIV 100 µs DIV 5 Vp p 136 µs ...

Page 19: ... 26 IC Block Diagrams MAIN Board IC1 CXA1238M T6 ...

Page 20: ... 27 IC501 CXA1782BQ ...

Page 21: ... 28 IC502 CXD2508AQ ...

Page 22: ...nt signal input from the CXD2508AQ IC502 44 SCOR I Subcode sync S0 S1 detection signal input from the CXD2508AQ IC502 45 DOOR I CD lid open close detect switch S420 input terminal L open H close 46 DATA O Serial data output to the CXD2508AQ IC502 47 XRESET O Reset signal output to the CXA1782BQ IC501 and CXD2508AQ IC502 L reset 48 AU MUT O Audio line muting on off control signal output terminal L ...

Page 23: ...TRACK key input S408 65 KEY IN9 I Key input terminal TRACK CLOCK key input S409 66 KEY IN10 I Key input terminal OFF ALARM RESET key input S410 67 KEY IN11 I Key input terminal SNOOZE SLEEP OFF key input S411 68 RESET I System reset signal input from the reset signal generator IC402 L reset L is input for several 100 msec after power on then it changes to H 69 S0 O Segment drive signal output term...

Page 24: ...W LCD CD820 US Canadian AEP SP AUS 1 3 021 532 11 WINDOW LCD CD820 IT 1 3 021 532 21 WINDOW LCD CD820L FR 1 3 021 532 31 WINDOW LCD CD820L AEP UK 2 3 021 528 01 PANEL FRONT BLACK 2 3 021 528 11 PANEL FRONT WHITE CD820 US Canadian 2 3 021 528 31 PANEL FRONT SILVER CD820 IT CD820L UK 3 3 910 112 01 PLATE CHUCKING 4 1 452 732 11 MAGNET 5 3 021 529 01 LID CD BLACK 5 3 021 529 11 LID CD WHITE CD820 US ...

Page 25: ...TOR BOARD TYPE A 62 1 668 918 12 MOTOR BOARD TYPE B 63 A 3679 973 A MAIN BOARD COMPLETE CD820 US 63 A 3679 984 A MAIN BOARD COMPLETE CD820 AEP SP 63 A 3679 988 A MAIN BOARD COMPLETE CD820 IT 63 A 3679 989 A MAIN BOARD COMPLETE CD820L FR 63 A 3679 990 A MAIN BOARD COMPLETE CD820L AEP 63 A 3679 991 A MAIN BOARD COMPLETE CD820L UK 63 A 3683 000 A MAIN BOARD COMPLETE CD820 Canadian 63 A 3683 010 A MAI...

Page 26: ...k are critical for safety Replace only with part num ber specified Les composants identifiés par une marque sont critiques pour la sécurité Ne les remplacer que par une pièce portant le numéro spécifié 101 8 848 379 31 OPTICAL PICK UP KSS 213B 102 2 626 907 01 GEAR A 103 2 627 003 02 GEAR B RP 104 2 626 908 01 SHAFT SLED M571 X 2625 769 1 GEAR ASSY MB MOTOR SLED M572 X 2625 770 2 CHASSIS ASSY MB R...

Page 27: ... TRACK S402 1 554 937 11 SWITCH KEY BOARD ALARM MODE S403 1 554 937 11 SWITCH KEY BOARD ALARM B S404 1 554 937 11 SWITCH KEY BOARD RADOI SLEEP S405 1 554 937 11 SWITCH KEY BOARD S406 1 554 937 11 SWITCH KEY BOARD ALARM A S407 1 554 937 11 SWITCH KEY BOARD CD S408 1 554 937 11 SWITCH KEY BOARD S409 1 554 937 11 SWITCH KEY BOARD TRACK CLOCK S410 1 554 937 11 SWITCH KEY BOARD OFF ALARM RESET S411 1 5...

Page 28: ...CHIP 0 01uF 50V C331 1 126 963 11 ELECT 4 7uF 20 50V EXCEPT CD820 US Canadian C350 1 163 031 11 CERAMIC CHIP 0 01uF 50V C351 1 126 933 11 ELECT 100uF 20 16V C352 1 126 964 11 ELECT 10uF 20 50V C353 1 126 967 11 ELECT 47uF 20 16V C354 1 164 232 11 CERAMIC CHIP 0 01uF 50V C355 1 163 031 11 CERAMIC CHIP 0 01uF 50V C356 1 164 005 11 CERAMIC CHIP 0 47uF 25V CD820 US Canadian C358 1 163 037 11 CERAMIC C...

Page 29: ...uF 25V C567 1 163 038 00 CERAMIC CHIP 0 1uF 25V C568 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V CD820 US Canadian C570 1 163 037 11 CERAMIC CHIP 0 022uF 10 25V C571 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V C572 1 163 038 00 CERAMIC CHIP 0 1uF 25V C573 1 163 038 00 CERAMIC CHIP 0 1uF 25V C574 1 104 665 11 ELECT 100uF 20 10V C575 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V C580 1 163 031 11 CERAMIC CHIP 0 ...

Page 30: ...R Q1 8 729 119 78 TRANSISTOR 2SC403SP 51 CD820L AEP UK Q2 8 729 119 78 TRANSISTOR 2SC403SP 51 CD820L AEP UK Q120 8 729 119 78 TRANSISTOR 2SC403SP 51 Q130 8 729 029 94 TRANSISTOR DTC143TSA EXCEPT CD820 US Canadian Q220 8 729 119 78 TRANSISTOR 2SC403SP 51 Q230 8 729 029 94 TRANSISTOR DTC143TSA EXCEPT CD820 US Canadian Q320 8 729 029 21 TRANSISTOR DTA114ESA TP Q321 8 729 119 76 TRANSISTOR 2SA1175 HFE...

Page 31: ...R419 1 216 049 11 RES CHIP 1K 5 1 10W R420 1 216 049 11 RES CHIP 1K 5 1 10W R423 1 216 073 00 RES CHIP 10K 5 1 10W CD820 AEP IT SP CD820L AEP FR R427 1 216 073 00 RES CHIP 10K 5 1 10W R428 1 216 057 00 METAL CHIP 2 2K 5 1 10W R429 1 216 097 00 RES CHIP 100K 5 1 10W R430 1 216 073 00 RES CHIP 10K 5 1 10W R431 1 216 121 00 RES CHIP 1M 5 1 10W R432 1 216 073 00 RES CHIP 10K 5 1 10W R433 1 216 097 00 ...

Page 32: ...1 5 1 4W F EXCEPT CD820 US R905 1 216 049 11 RES CHIP 1K 5 1 10W R906 1 216 033 00 METAL CHIP 220 5 1 10W R907 1 216 033 00 METAL CHIP 220 5 1 10W R908 1 216 089 00 RES CHIP 47K 5 1 10W R909 1 216 049 11 RES CHIP 1K 5 1 10W R910 1 216 033 00 METAL CHIP 220 5 1 10W R911 1 216 049 11 RES CHIP 1K 5 1 10W R912 1 216 089 00 RES CHIP 47K 5 1 10W VARIABLE RESISTOR RV1 1 241 765 11 RES ADJ CARBON 22K RV30...

Page 33: ...905 21 TRANSFORMER POWER EXCEPT CD820 US Canadian HARDWARE LIST 1 7 685 649 79 SCREW P 3X14 TYPE2 NON SLIT 2 7 685 133 19 SCREW BTP 2 6X6 TYPE2 N S 3 7 685 547 19 SCREW BTP 3X10 TYPE2 N S 4 7 621 255 15 SCREW P 2X3 ACCESSORIES PACKING MATERIALS 3 704 286 01 BAG STANDARD PROTECTION 3 862 235 11 MANUAL INSTRUCTION ENGLISH FRENCH GERMAN DUTCH CD820 AEP IT SP AUS CD820L 3 862 235 21 MANUAL INSTRUCTION...

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Sony ICF-CD820 - Cd/am/fm Stereo Clock Radio, Service Manual

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