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Sony XR-C8220 Service Manual

Fm/am cassette car stereo
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SERVICE MANUAL
For RM-X4S (Remote Commander),
please refer to RM-X4S Service Manual
(9-925-698-∏) previously issued.
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol a are trade-
marks of Dolby Laboratories Licensing Corporation.
MICROFILM
XR-C8220
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
FM/AM CASSETTE CAR STEREO
US Model
E Model
XR-C9100
MG-25D-136

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  • Page 1 XR-C8220 SERVICE MANUAL US Model E Model For RM-X4S (Remote Commander), please refer to RM-X4S Service Manual (9-925-698-∏) previously issued. Dolby noise reduction manufactured under license Model Name Using Similar Mechanism XR-C9100 from Dolby Laboratories Licensing Corporation. Tape Transport Mechanism Type MG-25D-136 “DOLBY”...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270 ˚C dur- ing repairing. GENERAL • Do not touch the soldering iron on the same conductor of the Location of controls ............3 circuit board (within 3 times).
  • Page 3 SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...
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  • Page 9: Disassembly

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. SUB PANEL ASS’Y 1 connector (CN802) 3 two claws 2 three screws (PTT2.6 × 6) 3 claw 4 connector (CN500) 5 sub panel ass’y 2 screw (PTT2.6 × 6) MECHANISM DECK (MG-25D-136) 3 two screws (2.6 ×...
  • Page 10 MAIN BOARD, HEAT SINK 6 inverter ass’y 5 screw (PTT2.6 × 10) 3 screw (PTT2.6 × 10) 9 seven screws (PTT2.6 × 10) 1 connector 8 cord (with connector) (CN553) (ANT) 1 connector (J10) 2 three ground point 7 screw screws (PTT2.6 ×...

  • Page 11: Assembly Of Mechanism Deck

    SECTION 3 ASSEMBLY OF MECHANISM DECK Note: Follow the assembly procedure in the numerical order given. 7 Holder the hanger by bending the claw. HOUSING 5 Fit projection on C part. 1 Install the catch to the hanger. 2 Install the hanger onto two claws of the housing.
  • Page 12 LEVER (LDG-A)/(LDG-B) shaft A shaft A shaft B shaft C shaft B 1 Fit the lever (LDG-A) on shafts A – C and install it. 3 type-E stop ring 2.0 2 Fit the lever (LDG-B) on shafts A and B and install it.
  • Page 13 GUIDE (C) 2 guide (C) 1 three claws MOUNTING POSITION OF CAPSTAN/REEL MOTOR (M901) two precision screws (P2 × 2) capstan/reel motor (M901) 30˚ – 13 –...

  • Page 14: Mechanical Adjustments

    SECTION 4 SECTION 5 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS 1. Clean the following parts with a denatured-alcohol-moistened TEST MODE swab: This set have the test mode function. In the test mode, FM Auto playback head pinch roller Scan/Stop Level and AM Auto Scan/Stop Level adjustments can rubber belt capstan be performed easier than it in ordinary procedure.

  • Page 15: Tuner Section

    Dolby Level Adjustment TUNER SECTION 0 dB=1µV Setting: [SHIFT] button : ON (light up SET UP and Cautions during repair PLAY MODE) When the tuner unit is defective, replace it by a new one be- Preset (PLAY MODE) cause its internal block is difficult to repair. (n) buttons : NR off SOUND (BAS) button...
  • Page 16 FM Stereo Separation Adjustment (WIDE) FM Stereo Separation Adjustment (NARROW) Setting: Setting: [SOURCE] [SOURCE] button : FM button : FM FREQUENCY SELECT switch FREQUENCY SELECT switch (E model) : FM 200 k (E model) : FM 200 k [SHIFT] [SHIFT] button : ON (light up SET UP and button...
  • Page 17 AM Auto Scan/Stop Level Adjustment Setting: [SOURCE] [MODE] buttons : AM FREQUENCY SELECT switch (E model): AM 10 k 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna (50 Ω ) antenna jack Carrier frequency : 1000 kHz 30% amplitude modulation by 1 kHz signal...
  • Page 18 Adjustment Location: – SET UPPER VIEW – Tape Speed Adjustment TUX10 RV1 AM Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment RV3 FM Stereo Separation Adjustment (WIDE) RV4 FM Stereo Separation Adjustment (NARROW) RV240 RV230 (R-CH) (L-CH) Dolby Level Adjustment –...

  • Page 19: Diagrams

    XR-C8220 SECTION 6 DIAGRAMS FM B+ AM B+ 6-1. BLOCK DIAGRAM – TUNER/TAPE Section – FM/AM TUNER UNIT TUX10 BAND-PASS FM-L FM L-OUT FILTER (Page 21) (FM/AM ANTENNA) FM-ANT IC50 MUTING R-CH AM-ANT FM R-OUT R-CH AM-DET OUT (Page 21)

  • Page 20: Block Diagram - Main Section

    XR-C8220 6-2. BLOCK DIAGRAM – MAIN Section – • SIGNAL PATH CN780 (1/2) : FM AUDIO IN : AM INPUT SELECT, : TAPE PLAY ELECTRICAL VOLUME IC301 : BUS AUDIO IN LINE DRIVER R-CH IC310 AUX-IN-L FM-L FM-IN-L FNTO1 VOLUME...

  • Page 21: Block Diagram - Display/Key Control Section

    XR-C8220 6-3. BLOCK DIAGRAM – DISPLAY/KEY CONTROL Section – RE900 VOLUME/BASS/TREBLE/ BALANCE/FADER CONTROL LSW900 – 909, D510 LSW912 – 918, S900, SW801 ROTARY ENCODER J500 RE900 LED800 REMOTE IN LED800, 802 (TAPE WINDOW) D506 LED802 LED DRIVE BUZZER SW500 BZ600...

  • Page 22: Block Diagram - Bus Control/Power Supply Section

    VCC 7 (FM CIRCUIT B+) REMOTE CONTROL CN600 REGULATOR RECEIVER BUS CONTROL IN IC502 IC901 AM B+ AM+B (FOR SONY BUS) (AM CIRCUIT B+) D604 SIRCS BUFFER COM +8V SIRCS 24 SIRCS COM8V Q602 (AUDIO CIRCUIT B+) SONY BUS INTERFACE...

  • Page 23: Note For Printed Wiring Boards And Schematic Diagrams

    6-5. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Waveforms – MAIN Board – – KEY Board – Note on Printed Wiring Board: Note on Schematic Diagram: 1 IC10 @º (XOUT) 1 IC900 @º (OSC-IN) • X : parts extracted from the component side. •...
  • Page 24 XR-C8220 6-6. PRINTED WIRING BOARD – MAIN Board (Component Side) – • Semiconductor Location Ref. No. Location Ref. No. Location F-13 IC302 D200 IC310 D-12 D201 IC320 D202 IC350 D350 IC383 D351 IC410 D-10 D506 J-12 IC500 D508 IC600 D509...

  • Page 25: Printed Wiring Board - Main Board (Conductor Side)

    XR-C8220 6-7. PRINTED WIRING BOARD – MAIN Board (Conductor Side) – • Semiconductor Location Ref. No. Location Ref. No. Location E-10 D714 E-10 D716 J-12 D501 IC501 D502 IC502 D503 K-10 IC503 D504 IC700 D507 D512 J-12 F-10 D515 J-12...

  • Page 26: Schematic Diagram - Main Section (1/4)

    XR-C8220 6-8. SCHEMATIC DIAGRAM – MAIN Section (1/4) – • See page 28 for Waveforms. • See page 47 for IC Block Diagrams. (Page 35) (Page 39) (Page 38) – 33 – – 34 –...

  • Page 27: Schematic Diagram - Main Section (2/4)

    XR-C8220 6-9. SCHEMATIC DIAGRAM – MAIN Section (2/4) – • See page 48 for IC Block Diagrams. (Page (Page (Page 40) – 35 – – 36 –...

  • Page 28: Schematic Diagram - Main Section (3/4)

    XR-C8220 6-10. SCHEMATIC DIAGRAM – MAIN Section (3/4) – • See page 28 for Waveforms. • See page 47 for IC Block Diagrams. (Page 34) (Page (Page – 37 – – 38 –...

  • Page 29: Schematic Diagram - Main Section (4/4)

    XR-C8220 6-11. SCHEMATIC DIAGRAM – MAIN Section (4/4) – • See page 49 for IC Block Diagrams. (Page 36) (Page (Page 46) (Page (Page 46) (Page 46) (Page 46) – 39 – – 40 –...

  • Page 30: Printed Wiring Board - Panel Section

    XR-C8220 6-12. PRINTED WIRING BOARD – PANEL Section – • Semiconductor Location (Component Side) Ref. No. Location D901 D903 B-10 IC900 Q900 B-11 Q901 B-11 Q902 B-10 Q903 B-10 (ELECTRO LUMINESCENT LIGHT) • Semiconductor Location (Conductor Side) Ref. No. Location...

  • Page 31: Schematic Diagram - Panel Section

    XR-C8220 6-13. SCHEMATIC DIAGRAM – PANEL Section – • See page 28 for Waveforms. (Page 46) – 43 – – 44 –...

  • Page 32: Printed Wiring Board - Sub/Inverter Section

    XR-C8220 6-14. PRINTED WIRING BOARD – SUB/INVERTER Section – 6-15. SCHEMATIC DIAGRAM – SUB/INVERTER Section – • See page 28 for Waveform. (Page 32) (Page 42) (Page 40) (Page 43) (Page 31) (Page 40) (Page 40) (Page 32) (Page 40) (Page 32) –...
  • Page 33 • IC Block Diagrams – MAIN Board – IC10 BU2624FV-E2 IC201 LB1638M N.C. XOUT PHASE OUT1 REFERENCE DIVIDER FMIN MAIN PRESCALER COUNT OUT2 SHIFT REGISTER LATCH AMIN N.C. IF COUNT 20BIT COUNT IFIN IC250 CXA2510AQ-T4 120µ/ 70µ + – MSMODE –...
  • Page 34 IC301 CXA1946BQ-T6 35 34 30 29 28 27 26 24 FNTO1 VOLUME VOLUME LOUD TONE FADER 8dB STEP 1dB STEP 23 REO1 GAIN12 VCTBUFF GAIN11 IN14 VCTBUFF IN13 IN12 VCTBUFF IN11 LATCH 22 CE LATCH CONTROL 21 CLK 20 DGND ZCDET 19 GND SHIFT...
  • Page 35 IC502 BA3918-V3 IC602 BA8270F-E2 BUS ON BUS ON SWITCH REGULATOR RESET SWITCH BUS ON CLK IN BATTERY BATT BU IN SWITCH OVER VOLTAGE PROTECT VREF DATA DATA IN – DATA OUT 2 3 4 IC650 MSM6656A-687GS-KR1 (US model) IC650 MSM6656A-689GS-KR1 (E model) AOUT BUSY TIMMING...

  • Page 36: Ic Pin Function Description

    CSV-RST Reset signal output to the CSV (IC650) “L”: reset BUS-ON Bus on/off control signal output to the SONY bus interface (IC602) “L”: bus on SYSRST Reset signal output to the SONY bus interface (IC602) “L”: reset DOORSW Front panel open/close detection signal input “L” is input when the front panel is closed...
  • Page 37 Pin No. Pin Name Function LCD INH Blank indicate control signal output to the liquid crystal display driver (IC900) “L”: no display — Ground terminal — Connected to coupling capacitor for the power supply A/D converter power control signal output terminal When the KEYACK (pin &§) that controls reference voltage power for key A/D conversion input AD-ON is active, “L”...
  • Page 38 Input of acknowledge signal for the key entry Acknowledge signal is input to accept function KEYACK and eject keys in the power off status On at input of “H” Battery detect signal input from the SONY bus interface (IC602) and battery detect circuit BU-IN “L” is input at low voltage...
  • Page 39 Pin No. Pin Name Function Motor drive signal output to the loading/tape operation motor drive (IC201) “H” active LM-LOD (For the loading direction and forward side operation) CM-ON Capstan/reel motor (M901) drive signal output terminal “H”: motor on TAPEON Tape system power supply on/off control signal output terminal “H”: tape on Forward/reverse direction control signal output to the CXA2510AQ (IC250) N-ROUT...

  • Page 40: Exploded Views

    SECTION 7 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they may have some difference from the original are seldom required for routine service. Some one. delay should be anticipated when ordering •...
  • Page 41 (2) FRONT PANEL SECTION not supplied (KEY board) not supplied EL900 LCD900 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3377-088-1 PANEL SUB ASSY 3-022-334-01 BUTTON (LIST) 3-022-332-01 BUTTON (10 KEY) * 63 3-022-327-01 PLATE (LCD), GROUND (SHIFT.
  • Page 42 (3) MECHANISM DECK SECTION (MG-25D-136) HP901 M901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3291-667-A CLUTCH (FR) ASSY 3-933-346-01 CATCHER * 152 3-019-130-01 LEVER (LDG-A) 3-933-344-01 GUIDE (C) * 153 3-019-131-01 LEVER (LDG-B) 3-014-798-01 SCREW (HEAD), SPECIAL 3-020-539-01 SPRING (LD-1), TENSION 3-364-151-01 WASHER 3-020-540-01 SPRING (LD-2), TENSION...

  • Page 43: Electrical Parts List

    SECTION 8 INVERTER ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they When indicating parts by reference number, please include the board. are seldom required for routine service. parts list may be different from the parts speci- fied in the diagrams or the components used Some delay should be anticipated when order- on the set.
  • Page 44 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < LIQUID CRYSTAL DISPLAY > R919 1-216-065-00 RES, CHIP 4.7K 1/10W R920 1-216-069-00 METAL CHIP 6.8K 1/10W LCD900 1-803-504-11 DISPLAY PANEL, LIQUID CRYSTAL R931 1-216-037-00 METAL CHIP 1/10W <...
  • Page 45 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-104-665-11 ELECT 100uF C243 1-163-263-11 CERAMIC CHIP 330PF 1-163-809-11 CERAMIC CHIP 0.047uF C244 1-163-263-11 CERAMIC CHIP 330PF 1-104-665-11 ELECT 100uF C245 1-163-021-11 CERAMIC CHIP 0.01uF 1-163-809-11 CERAMIC CHIP 0.047uF C246 1-126-159-11 ELECT...
  • Page 46 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C410 1-126-157-11 ELECT 10uF C416 1-124-234-00 ELECT 22uF C614 1-163-009-11 CERAMIC CHIP 0.001uF C420 1-164-004-11 CERAMIC CHIP 0.1uF C615 1-163-229-11 CERAMIC CHIP 12PF C650 1-164-004-11 CERAMIC CHIP 0.1uF C421 1-163-012-00 CERAMIC CHIP...
  • Page 47 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D350 8-719-422-16 DIODE MA8039-L-TX D719 8-719-313-73 DIODE SFPB-52 D351 8-719-422-16 DIODE MA8039-L-TX D501 8-719-423-23 DIODE MA8110-M < IC LINK > D502 8-719-423-23 DIODE MA8110-M F550 1-533-674-11 RINK, CHIP IC (ICP-S0.5) 0.5A D503 8-719-423-32 DIODE MA8120-M D504...
  • Page 48 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSISTOR > 1-216-073-00 METAL CHIP 1/10W 1-216-049-11 RES,CHIP 1/10W 8-729-920-85 TRANSISTOR 2SD1664-QR 1-216-081-00 METAL CHIP 1/10W 8-729-230-49 TRANSISTOR 2SC2712-YG 1-216-081-00 METAL CHIP 1/10W 8-729-230-49 TRANSISTOR 2SC2712-YG 1-216-073-00 METAL CHIP 1/10W 8-729-421-22 TRANSISTOR UN2211...
  • Page 49 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R232 1-216-027-00 METAL CHIP 1/10W R233 1-216-109-00 METAL CHIP 330K 1/10W R404 1-216-069-00 METAL CHIP 6.8K 1/10W R234 1-216-079-00 METAL CHIP 1/10W R405 1-216-079-00 METAL CHIP 1/10W R406 1-216-077-00 METAL CHIP 1/10W...
  • Page 50 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R532 1-216-675-11 METAL CHIP 0.5% 1/10W R704 1-216-017-00 RES,CHIP 1/10W R533 1-216-675-11 METAL CHIP 0.5% 1/10W R705 1-216-073-00 METAL CHIP 1/10W R534 1-216-097-00 RES,CHIP 100K 1/10W R706 1-216-089-00 RES,CHIP 1/10W R550...
  • Page 51 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > PARTS FOR INSTALLATION AND CONNECTIONS ************************************** R800 1-216-049-11 RES,CHIP 1/10W R801 1-216-025-00 RES,CHIP 1/10W 3-009-613-21 FRAME R802 1-216-025-00 RES,CHIP 1/10W X-3366-405-1 SCREW ASSY (EXP), FITTING (E) R803 1-216-025-00 RES,CHIP 1/10W...
  • Page 52 XR-C8220 Sony Corporation 99A057038-1 9-926-425-11 Personal & Mobile Communication Company Printed in Singapore © 1999. 1 – 66 – Published by Quality Assurance Dept.

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