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XR-C5120 SERVICE MANUAL US Model Canadian Model Model Name Using Similar Mechanism XR-C5100 Tape Transport Mechanism Type MG-25F-136 SPECIFICATIONS FM/AM CASSETTE CAR STEREO MICROFILM...
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XR-C5120 6-3. SCHEMATIC DIAGRAM – MAIN Board (1/2) – • See page 16 for Waveforms. • See page 27 for IC Block Diagrams. – 19 – – 20 –...
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XR-C5120 6-4. SCHEMATIC DIAGRAM – MAIN Board (2/2) – • See page 28 for IC Block Diagrams. (Page 25) – 21 – – 22 –...
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• IC Block Diagrams IC331 TDA7462D – MAIN Board – IC21 TB2118F-EL-S SE3L SE3R MUTE PAUSE PAUSE DETECT 24 23 22 21 16 15 14 13 FRONT INPUT TREBLE/ OUT FL LOUDNESS VOLUME VOICE BANDPASS FADER GAIN & SOFT BASS CONTROL CONTROL SE1L...
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Rotary remote commander shift key input terminal “L”: shift SYSRST Reset signal output to the SONY bus interface (IC581) “L”: reset BUS-ON Bus on/off control signal output to the SONY bus interface (IC581) “L”: bus on UNISO Serial data output to the SONY bus interface (IC581) UNISI...
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Pin No. Pin Name Function AMP-MUT Muting on/off control signal output to the power amplifier (IC751) “L”: muting on Standby on/off control signal output to the power amplifier (IC751) AMP ON “L”: standby mode, “H”: amp on PLL-CKO PLL serial data transfer clock signal output to the FM/AM PLL (IC21) PLL-CE PLL chip enable signal output to the FM/AM PLL (IC21) “H”...
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Pin No. Pin Name Function POS3 Tape position (EJECT/FF/REW/ POS3: “L”: REV and EJECT mode, “H”: others mode POS2 REV/FWD mode) detect input from POS2: “L”: REW mode, “H”: others mode the tape operation switch on the POS0: “L”: EJECT mode, “H”: others mode POS0 deck mechanism POS1: “L”: FF and FWD mode, “H”: others mode...