Panasonic CQ-C1401U Service Manual

Also see for CQC1301U - AUTO RADIO/CD DECK: Operating instructions Operating instructions Installation instructions

Contents

9.1. Main BlockIC601 : YESAM276PinNo.Port Description I/O (V)FM AM CD1 (NC) - - - - -2 VSM Radio signal strength I 0 0 03 SD/ST Radio station detect I 0.3 0 0.84 AVSS Ground - 0 0 05 SCL Audio control serial clock O 4.9 4.9 4.96 SDA Audio control data O 4.9 4.9 4.97 AVREF (Conecting to +5V) - 4.9 4.9 4.98 CD SO CD data output I 2.1 2.3 1.79 CD SI CD data input O 0 0 3.310 CD SCK CD clock O 4.7 4.7 4.711 CDC DATA/XM-TX SOCD changer data/XMradio TX signalI 0 0 012 XM-RX SI XM radio RX signal O 4.8 4.8 4.813 CDC CLK CD changer clock I 0 0 014 CDC REM CD changer remote O 4.8 4.8 4.815 BZ OUT (NC) - - - - -16 LCD DO LCD data I 4.8 4.8 4.817 LCD DI LCD data O 4.7 4.7 4.718 LCD CLK LCD Clock O 4.8 4.8 4.819 CD MUTE CD mute I 0 0 4.820 CD RST CD reset O 4.8 4.8 4.821 CD STB CD strobe I 3.7 3.7 3.722 CDC SENS(NC)- - - - -23 PLL DO PLL data I 4.9 4.9 4.924 PLL CLK PLL data clock O 4.8 4.8 4.825 PLL DI PLL data O 0 0 026 PLL CE PLL chip select O 0 0 027 (NC) - - - - -28 (NC) - - - - -29 (NC) - - - - -30 (NC) - - - - -31 (NC) - - - - -32 (NC) - - - - -33 VSS1 Ground - 0 0 034 RDS DATA(NC)- - - - -35 S-LED (NC) - - - - -36 LCD CE LCD chip enable O 0 0 037 LCD 5V CNT Display 5V control O 0 0 038 (NC) - - - - -39 (NC) - - - - -40 (NC) - - - - -41 (NC) - - - - -42 ROTARY 1 Rotary encoder input 1 I 4.8 4.8 4.843 ROTARY 2 Rotary encoder input 2 I 4.7 4.7 4.744 (NC) - - - - -45 (NC) - - - - -46 PANEL Panel detection I 4.6 4.6 4.647 STBY Power IC stundby control O 4.8 4.8 4.848 EEPROM CE(NC)- - - - -49 EEPROM SK(NC)- - - - -50 EEPROM DI(NC)- - - - -51 EEPROM DO(NC)- - - - -52 (NC) - - - - -53 INV CNT Illumination control O 4.8 4.8 4.854 AMP CNT Amp power control O 4.8 4.8 4.8PinNo.Port Description I/O (V)FM AM CD55 ANT CNT Antenna power control O 4.8 4.8 4.856 EXT.MUTE External mute O 4.8 4.8 4.857 MAIN CNT Main power control O 4.8 4.8 4.858 AMP MUTE Amp mute control O 4.8 4.8 4.859 AF MUTE AF mute control O 4.8 4.8 4.860 RESET Reset I 4.8 4.8 4.861 RDS CLK (NC) - - - - -62 (NC) - - - - -63 (NC) - - - - -64 RM DATA Remote control data I 4.8 4.8 4.865 BATT Battery voltage detection I 4.5 4.5 4.566 CDC STB/XM DETCD Changer strobe/ XMreceiver detectionI 4.8 4.8 4.867 VSS0 Ground - 0 0 068 VDD1 +5V power supply - 4.8 4.8 4.869 X2 Crystal oscillator - 2.9 2.9 2.970 X1 Crystal oscillator - 2.3 2.3 2.371 TEST (TEST terminal) - 0 0 072 XT2 Crystal oscillator - 2.7 2.7 2.773 XT1 Crystal oscillator - 2 2 274 VDD0 +5V power supply - 4.9 4.9 4.975 AVDD +5V power supply - 4.8 4.8 4.876 INI A Mode setting A I 0 0 077 INI B Mode setting B I 4.8 4.8 4.878 ACC ACC detection I 4.9 4.9 4.979 (NC) (Connecting to ground) - 0 0 080 LEVEL (Connecting to ground) - 0 0 09.2. Display BlockIC901 : YEAMLC75854TPinNo.Port Description I/O (V)1-35 SEG1-35 LCD segment data O 2.536-39 NC - - -40-43 COM1-4 LCD common O 2.544 KS1 Not used - -45-49 KS2-6 Key scan O 5.050-54 Kl1-5 Key data I 055 TEST (Connecting to ground) - 056 VDD +5V power supply - 5.057 VDD1 VDD1 filter terminal - 3.358 VDD2 VDD2 filter terminal - 1.759 VSS Ground - 060 OSC Oscillator terminal - 3.961 DO Key data output O 5.062 CE LCD driver chip enable I 063 CLK LCD clock I 4.964 DI LCD data I 4.99 TERMINALS DESCRIPTION5CQ-C1401U / CQ-C1301U