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