Kenwood KRC-208S/218 Service Manual

Also see for KRC-28MR: Instruction manual Service manual

Contents

4KRC-208S/218,268/288,28MRCIRCUIT DESCRIPTION(X14-) IC1 : μ-COMPORT No. PORT NAME I/O FUNCTION OPERATING CONDITION1 XIN I μ-com clock. (4.5MHz) -2 GND - GND. -3 L DATA L I LCD driver data. -4 L DATA S O LCD driver data. -5 L CLK O LCD driver clock. -6 L CE O LCD driver chip enable. -7 SDA I/O E-volume data. -8 PLL DATA I/O Tuner data. -9 PLL CLK O Tuner clock. -10 SD I Tuner signal detection. "H" : Tuner signal exists."L" : Tuner signal does not exist.11 DATA C I Changer data. -12 DATA H O Head unit data. -13 CH CLK I/O Changer clock. -14 - - No connection. -15 MOTOR O Mechanism motor. -16 SCL O E-volume clock. -17-24 - - No connection. -25 AM+B O AM power supply. -26 FM+B O FM power supply. -27 PACK IN I Cassette tape pack-in. "L" : Pack in. "H" : Ejection.28 FF/REW I FF/REW signal. "L" : FF/REW. "H" : Play.29,30 GND - GND. -31 VDD - VDD. -32 REQ C I Request from changer. -33 MUTE O Mute. -34 CH CON O Changer control. -35 REQ H O Request to head unit. -36 SVR O Power IC (IC4) discharge control. -37 AMP STBY O Power IC (IC4) stand-by. -38 AMP MUTE O Power IC (IC4) mute. -39 P CON O P.CON for external amplifier. -40 ANT. CON O Power antenna. -41 SW5 O Circumambient circuit power supply control. -42 ILL O Illumination. -43 - - No connection. -44 BEEP O Buzzer. (2KHz) -45-47 - - No connection. -48 ROLL OFF I Destination switch. -49 N.CAN I Destination switch. -50 SEL1 I Destination switch. -51 SEL2 I Destination switch. -52 - - No connection. -53 EQ MUTE O Tape equalizer mute. -54 FWD/REV I FWD/REV. -55 - - No connection. -56 REMO I Remote control. -57-60 - - No connection. -61 ACC DET I ACC detection. -62 BU DET I Back-up detection. -63 S METER I Tuner signal meter. -64 PANEL I Panel on/off. "L" : Panel on. "H" : Panel off.65,66 GND - GND. -67 HOLD I Clock stop. -68 VDD - VDD. -69,70 GND - GND. -71,72 - - No connection. -73 VDD - VDD. -74,75 GND - GND. -76 VSS - GND. -77,78 - - No connection. -79 GND - GND. -80 XOUT O μ-com clock. (4.5MHz) -www . xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299