Kenwood CKDC-395 Service Manual

Contents

4CKDC-395/395A/495● SWITCH UNIT (X16-3370-1x)Ref. No. Application / Function Operation / ConditionIC3 REMOTE SENSORIC4 VFD DRIVERQ21 PAN SW5V “ON” when the base goes “H”.COMPONENTS DESCRIPTION● SYSTEM μ-COM : IC1 on X34- (ELECTRIC UNIT)Pin No. Active Pin Name I/O Application Processing Operation(H/L)1 DC ERR I DC offset detection input2 LINE MUTE I Phone detection NAVI MUTE : Over 2.5V, TEL MUTE : Below 1V3 ROTARY CW I Rotary encoder input4 AVSS -5 TUN TYPE1 I E-VOL setting switch Refer to “TUN TYPE” on the TRUTH TABLE6 TUN TYPE2 I E-VOL setting switch Refer to “TUN TYPE” on the TRUTH TABLE7 AVREF1 -8 VFD DATAF I Data input from VFD driver9 VFD DATAS O Data output to VFD driver10 VFD CLK O Clock output to VFD driver11 L VFD RST O Reset output to VFD driver Display OFF, Key reset, TDF panel OFF : LDisplay ON, Key scan : H12 VFD CE O Chip enable output to VFD driver13 ROTARY CCW I Rotary encoder input14 L TDF DET I TDF panel detection TDF panel OFF : H, TDF panel ON : L15 PWIC BEEP O Beep output16~19 NC -20 L TUN ADJ I For adjusting IC10 Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z,PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z21 TUN SD I Tuner search stop output H : Station exists, L : Station does not exist22~24 NC -25 AUD SDA I/O Volume + tuner I2C data input and outputMICROCOMPUTER’S TERMINAL DESCRIPTIONwww . xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299