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Sony XR-C8220 Service Manual
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Sony XR-C8220 Service Manual

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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Summary of Contents for Sony XR-C8220

  • 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 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 3 XR-C8220 6-9. SCHEMATIC DIAGRAM – MAIN Section (2/4) – • See page 48 for IC Block Diagrams. (Page (Page (Page 40) – 35 – – 36 –...
  • Page 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 5 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 6 XR-C8220 6-13. SCHEMATIC DIAGRAM – PANEL Section – • See page 28 for Waveforms. (Page 46) – 43 – – 44 –...
  • Page 7 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 8 • 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 9 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 10 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 11: 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 12 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 13 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 14 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...