Panasonic CQC1103U Service Manual - Page 6

CQ-C1103U 10 TERMINALS DESCRIPTION 10.1. Main Block IC601 : LC7237819D07 Ref. Part Part Name & Description I/O(V) FM(V AM(V CD(V No. No. ))) 1 XIN 4. 5 MHz X'tal and I Connection 2.52 2.53 2.52 2 TEST2 GND connection I 00 0 3 VREG Bypass condenser connected. O 2.9 2.9 2.93 4 VSSCPU GND connection - 00 0 5 CDC_DAT CD changer data A I 00 0 6 N.C. None - -- - 7 CDC_CLK CD changer clock I 00 0 8 CDC_REM CD changer Remote out O _OUT 00 0 9 LCD_DO LCD data output I 5,22 5,22 5.18 10 LCD_DI LCD data input O 00 0 11 LCD_CLK LCD clock O 5.17 5.19 5.15 12 LCD_CE LCD chip enable output O 0.1 0.14 0.12 13 CD_DO CD data output I 5.34 5.35 5.12 14 CD_DI CD data input O 0 0 5.2 15 CD_CLK CD clock O 5.19 5.21 5.17 16 CD_CE CD chip enable O 0 0 0.25 17 CD_LM+ CD eject O 00 0 18 CD_LM- CD loading O 00 0 19 CD_S/L CD 24PIN connection O 0 0 5.21 20 CD_WRQ CD WRQ connection I 5.34 5.35 4.26 21 CD_INSW CD insert SW input 1 I 0.1 0 0.1 22 CD_SW2 CD MECHA SW2 I 5.17 5.21 0.1 23 CD_LIMI CD limit SW T_SW I 0 0 5.18 24 CD_DRF CD DRF I 0 0 5.33 25 CD_RST CD reset O 5.19 5.22 5.21 26 CD_MUTE CD mute O 0 0 5.2 27 N.C. None - -- - 28 N.C. None - -- - 29 PANEL Panel detect I 5.2 5.23 5.2 30 N.C. GND connection I 00 0 31 N.C. GND connection I 00 0 32 N.C. GND connection I 00 0 33 N.C. None - -- - 34 N.C. None - -- - 35 N.C. None - -- - 36 N.C. None - -- - 37 N.C. None - -- - 38 N.C. None - -- - 39 VDDPORT Power supply of PORT - 5.19 5.22 5.21 40 VSSPORT GND of PORT - 00 0 41 N.C. None - -- - 42 N.C. None - -- - 43 N.C. None - -- - 44 N.C. None - -- - 45 N.C. None - -- - 46 N.C. None - -- - 47 N.C. None - -- - 48 N.C. None - -- - 49 PWR_CNT Power control O 5.12 5.2 5.19 50 AMP_CNT Amp stand-by O 5.12 5.2 5.19 51 AMP_MUT Amp mute E O 5.19 5.21 5.21 52 N.C. None - -- - 53 SSC Tuner search sensitivity O change 00 0 54 AF_MUTE AF mute O 5.19 5.21 5.21 55 I2C_DAT Electronic VOL data A O 5.2 5.21 5.21 56 I2C_CLK Electronic VOL clock O 5.2 5.21 5.21 57 ANT_CNT Motor antena control O 5.19 5.21 0 58 POWER_L Power LED ED O 0.15 0.15 0.12 59 N.C. None - -- - Ref. Part Part Name & Description I/O(V) FM(V AM(V CD(V No. No. ))) 60 N.C. ( None BZ_OUT ) - -- - 61 N.C. None - -- - 62 N.C. None - -- - 63 N.C. None - -- - 64 N.C. None - -- - 65 N.C. None - -- - 66 TEL_MUT External MUTE input E I 5.36 5.35 5.33 67 BATT Battery detection I 5.36 5.35 5.33 68 MODE_B ROTARY B input I 5.17 5.18 0 69 N.C.(RD None S_CLK) - -- - 70 REM_IN Remocon data input I 00 0 71 MODE_A ROTARY A input I 5.17 5.13 5.16 72 CDC_STB CD changer strobe input I 00 0 73 NC None - -- - 74 MONO Compulsion MONO ON O 00 0 75 AM_MODE AM change O 8.21 0.13 8.23 76 FM_MODE FM change O 0.13 8.2 8.23 77 N.C. GND connection I 00 0 78 INIT_C Initial value C I 00 0 79 INIT_B Initial value B I 5.16 5.19 5.19 80 INIT_A Initial value A I 00 0 81 VSS GND connection - 00 0 82 N.C.(RD None S_DATA) - -- - 83 ST FM stereo input I 5.34 5.2 5.4 84 SD_FM/A Signal detection M I 3.12 3.43 0 85 N.C. GND connection I 00 0 86 RESET Reset Input I 5.2( 6.4( 5.2( PWR PWR EJEC OFF) OFF) T) 87 ACC Power supply I 5.42 5.42 5.42 88 N.C. GND connection I 00 0 89 N.C. GND connection I 00 0 90 FM/AM_I FM/AM IF input FC I 1.42 1.42 0 91 N.C. GND connection I 00 0 92 SUBPD None O 2 2.02 0 93 VDDPLL Power supply of PLL - 5.23 5.22 5.2 94 N.C. GND connection I 00 0 95 OSC_FM/ FM/AM osc input AM I 1.39 1.26 0 96 VSSPLL GND connection - 00 0 97 N.C. None - -- - 98 EO1 PLL phase comparison O error output 2 2.02 0 99 TEST1 GND connection I 00 0 100 XOUT 4. 5 MHz X'tal and O Connection 2.62 2.63 2.62 Note 1 : Voltage measuerments are with respect to ground, with a voltmeter (internal resistance : 10M ohms). 10.2. Display Block IC901 : YEAMLC75853NW Pin No. Port Descriptions 1-4 5-31 32-40 41-43 44-49 NC SEG5-31 NC COM1-3 KS1-6 No connection LCD segment No connection LCD common Key data output I/O (V) (V) - - O 2.5 - - O 2.5 O 0.9 6