Sony Ericsson XR-C7500RX service manual BUS Audio Tape Play

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7-5. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

X : parts extracted from the component side.

Y : parts extracted from the conductor side.

b: Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

Caution:

 

Pattern face side:

Parts on the pattern face side seen from

(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side)

the parts face are indicated.

 

 

Note on Schematic Diagram:

All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

All resistors are in Ω and 1/4 W or less unless otherwise specified.

f : internal component.

C : panel designation.

U : B+ Line.

H : adjustment for repair.

Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords.

Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal produc- tion tolerances.

Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc- tion tolerances.

Circled numbers refer to waveforms.

Signal path. F : FM f : MW/LW

L : BUS AUDIO IN

E : TAPE PLAY

Please refer to servicing notes (page 2) for system of TYPE A, B and C.

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Contents XR-C7500R/C7500RX SpecificationsDiagrams Table of ContentsSection Servicing Notes GeneralSection General Setting the clockInstallation Instalación Montering Instalação Reset button Connections Conexiones Anslutning Ligações Connection example Ejemplo de conexiones XR-C7500R/XR-C7500RX AEP, UKXR-C7500RX E Power connection diagram Section Disassembly SUB Panel ASS’YMechanism Deck MG-25G-136 Heat Sink 2P Main BoardSection Assembly of Mechanism Deck HousingARM Suction Gear LDG-FT Lever LDG-A / LDG-BMounting Position of CAPSTAN/REEL Motor M901 Guide CSection Electrical Adjustments Section Mechanical AdjustmentsTorque Measurement Tape Tension MeasurementDolby Level Adjustment Tape Speed AdjustmentTape Deck Section Tuner SectionBlock Diagram TUNER/TAPE Section DiagramsSignal Path MW/LW Tape Play SectionSignal Path Block Diagram Main SectionRemote Block Diagram DISPLAY/KEY Control SectionBUS-ON Block Diagram BUS CONTROL/POWER Supply SectionBUS Audio Tape Play Semiconductor Location Component Side Printed Wiring Board Main Board Component SideSemiconductor Location Conductor Side Printed Wiring Board Main Board Conductor SideXR-C7500R/C7500RX XR-C7500R/C7500RX XR-C7500R/C7500RX XR-C7500R/C7500RX Printed Wiring Board SUB Board Schematic Diagram SUB Board KEY Board Waveforms Main BoardPrinted Wiring Board KEY Board Schematic Diagram KEY Board See page 29 for Waveforms IC Block Diagrams Main Board IC10 IC50 SAA6588T/V2-118IC100 CXD2726Q-4 IC201 IC250 CXA2510AQ-T4IC500 BA8270F-E2 Pin No Pin Name Description IC PIN Function DescriptionXlat Main Board IC600 MB90574BPMT-G-265-BND System Controller Dsplat Accin Stop Loading Eject Brake TUX1 Except E Front Panel Section 54 3-041-003-01 Button LIST/ENTER DSPL. LIST. Enter60 1-694-660-11 Conductive BOARD, Connection 159 158 155 154 157 156 153152 168 151 160 163 Mechanism Deck Section MG-25G-136161 162 164Section Electrical Parts List KEY Metal Chip ResistorRES-CHIP Rotary EncoderKEY Main SWITCH, Tactile with LEDSEEK/AMS + M Ceramic Chip 8PFDouble Layer TantalumDiode DTZ5.6B FilmDiode MA152WA-TX Diode CRZ22 TE85L.SONYLB1930M-TLM TDA7402TRBA09ST-V5 RN5VD33AA-TLR27 216-809-11 Type C Main SUB 503 504 505 501 502506 507 508 507