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SONY XRC7220R
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY XRC7220R Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 42 (click to view)
Pin No. 68 69 70 71 72 73 74 75 76 77

Pin Name SUBCE FLASH-W IIC SIO IIC CKO RC-IN1 X1A X0A DAVN KEYACK BU-IN

I/O O I I/O O I O I I I I I I I I I/O I I I I I â I O â I O O O O O O I I I I I I I O

Function Chip enable signal output terminal âHâ active Not used (open) Internal flash memory data write mode detection signal input terminal âLâ: data write mode Not used (fixed at âHâ in this set) Two-way data bus with the RDS decoder (IC150) Bus clock signal output to the RDS decoder (IC150) Rotary remote commander shift key input terminal âLâ: shift Sub system clock output terminal (32.768 kHz) Sub system clock input terminal (32.768 kHz) Data transmit completed detect signal input from the RDS decoder (IC150) âHâ active Input of acknowledge signal for the key entry Acknowledge signal is input to accept function and eject keys in the power off status On at input of âHâ Battery detect signal input from the SONY bus interface (IC602) and battery detect circuit âLâ is input at low voltage Auto dimmer control illumination line detection signal input terminal âLâ is input at dimmer detection Telephone muting signal input terminal At input of âHâ, the signal is attenuated by â20 dB Front panel block remove/attach detection switch (SW500) input terminal âLâ: front panel is attached Accessory detect signal input terminal âLâ: accessory on Two-way data bus with the external device Not used (open) Hardware standby input terminal âLâ: hardware standby mode Reset signal input in this set Setting terminal for the CPU operational mode (fixed at âLâ in this set) Setting terminal for the CPU operational mode (fixed at âHâ in this set) Setting terminal for the CPU operational mode (fixed at âHâ in this set) System reset signal input from the reset signal generator (IC500) and reset switch (SW800) âLâ: reset âLâ is input for several 100 msec after power on, then it changes to âHâ Ground terminal Main system clock input terminal (3.68 MHz) Main system clock output terminal (3.68 MHz) Power supply terminal (+5V) Busy detection signal input from the external device Not used (fixed at âLâ) Data write strobe signal output to the external device Not used (open) Chip enable signal output to the external device Not used (open) Chip enable signal output to the external device Not used (open) Reset signal output to the external device âHâ: reset Not used (open) Power down control signal output to the external device âLâ: power down Not used (open) Data read strobe signal output to the external device Not used (open) Metal detection signal input terminal âLâ: normal position, âHâ: metal position Whether a music is present or not from CXA2510AQ (IC250) is detected at auto music sensor âLâ: music is present, âHâ: music is not present Rotation detect signal input from supply reel sensor and take-up reel sensor on the deck mechanism Tape position (EJECT/FF/REW/ REV/FWD mode) detect input from the tape operation switch on the deck mechanism POS0: âLâ: EJECT mode, âHâ: others mode POS1: âLâ: FF and FWD mode, âHâ: others mode POS2: âLâ: REW mode, âHâ: others mode POS3: âLâ: REV and EJECT mode, âHâ: others mode

78 79 80 81 82 to 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109

ILL IN TEL-ATT NOSESW ACC IN
TIR-D0 to TIR-D3

HSTX MD2 MD1 MD0 RESET VSS X0 X1 VCC TIR-BUSY TIR-WR TIR-CE0 TIR-CE1 TIR-RES TIR-PDOWN TIR-RD MTLIN AMSIN REEL POS0 POS1 POS2 POS3 LM-EJ

Motor drive signal output to the loading/tape operation motor drive (IC201) âHâ active (For the eject direction and reverse side operation) *1

â 56 â

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