Panasonic KX-TG2448BXF Service Manual

Contents

28 SCHEMATIC DIAGRAM (BASE UNIT_MAIN)13.824MHzX501C347K0.1VCCC513 K0.1K1.0C515C501 K0.1C504 K0.1R509 NC10u/6.3VC516RSTC422 K0.1C503 K0.1L501 2KA213NCR453C517 K0.1URXUTXR533 4.7K1KR422C505 NCNCC453NCR454NCC454MIPMINNCC456C660K0.1JIJCJOJGJSTXOR517 NC1KR134R178 1KD133C508 C2PC509 C2PC377 NCRX_GAINRSSIRX_DATARX_ENSCLKMOD_ENTX_ENSDIOSHCTRLSDATASLEOSC_INRF_RESETVBATT2TX_DATAR524 560R523 39KR521 1.8KR525 680 Q521R522 150C352K0.1R591 NCR592 NCR593 NCNCR5941LINE_SZ2 RLY3 BELL4 RLY5 ACDOWN6 AGPIO6/CA67 AGPIO7/CA78 KEYS_D9 KEYS_C10 KEYS_B11 KEYS_A12 CHG_CTL13 CHG_DET14 VCC15 GND16 EROM_WP17 EROM_DATA18 EROM_CLK19 KEYIN320 KEYIN221 KEYIN122 EGPIO10/HDB623 SERIAL_DAT24 SERIAL_LE25 SERIAL_CLK26 SELIAL_DI27 EGPIO15/HAD1528 GND29 SPP30 GNDPA 31SPN32VCCPA33HSSP34LOUT035DCIN36LIN037VCCA38GNDA39HSMIP40HSMIN41VREF42MIN43MIP44GNDR45TXMOD46VREFR47RSSI48VCCR49GNDPLL50VCCPLL51XOUT52XIN53GND54RSTN55PDN56FL_RST57TXDATA58MOD_EN59FL_SO60FL_SI61FL_CS62BGPIO663RXEN64TXEN65RXGAIN66RXI67CHG_LED68INUSE_LED69ANS_LED70RF_RST71RADIOEN72GND73VCC74SHCTRL75ANT076TCL77TMS78TDI79TDO80SEG1281 SEG1182 SEG1083 SEG984 SEG885 SEG786 SEG687 SEG588 SEG489 SEG390 COM291 COM192 UART_TX93 UARTRX94 INT095 DGPIO0/CD096 GND97 VCC98 MSG_LED99 FL_CLK100 INT116K1 A02 A13 A24 VSS 5SDA6SCL7WP8VCCNCC514C181 NCNC1RDY2RESET3WP4NC5NC6VCC7GND8NC9NC10NC11CS12BCLK13SI14SO15 NC16 NC17 NC18 NC19 NC20 NC21 NC22 NC23 NC24 NC25 NC26 NC27 NC28 NCNCR601RDYC421 K0.1C518 10uFNCR602C603 NCR675 820R680 NCR421 47KC120 K5600PC601 NCC525 K0.1C521 C3PK0.01C551C522 K0.1NCRA50024687531C365 K0.01C524 K0.1RA5014.7K7531 2468KIN1GNDKIN2KIN3SPPC471 NCSPNC472 NCC458NCNCR460C457NCNCR459C459 NCINT0INT1R423 1KPDNC423 K0.1RXDR679 NCNCC680NCC677NCC679NCC675R668 NCKEYS_AR669 NCKEYS_CR670 NCKEYS_BR671 NCKEYS_DANTANT1ANTG1GNDNCL401NCL402R474NCR473NCNCC455C511 470PMICC512 NCFSO FSI FCLK FCSFRSTRSSINCC668NCC663NCC666NCC664NCC669NCC667NCC671NCC672NCC665CHG_LED2APVCCKS_AINUSE_LEDKI1 C686 NCC687 NCNCD471NCD472J600 NCJ601 NCCN6611NC2KEYS_A3KEYS_B4KEYS_C5KEYS_D6NC7NC8NC9NC10NC11KEYIN312KEYIN213KEYIN114NC15CHG_LED16INUSE_LED17ANS_LED18MSG_LED192APVCC20COM121COM222SEG323SEG424SEG525SEG626SEG727SEG828SEG929SEG1030SEG1131SEG1232NCC611 K0.1C612 J100PR612 10KR611 1KR677 330C685 NCNCC670OSCUGUVCCKI3DVCCRXENTXENK0.1C381C384NCC382330u/4.0VC383K470PREG_2.5V1 Vout2 NC3 GND4 Cn 5Cont6NC7NC8VinC179 K0.015RSSIMOD_ENSDATASDIOSCLKRF_RESETRX_DATASHCTRLTX_ENRX_ENRX_GAINTX_DATASLESHCTRLRX_DATAMOD_ENSDATASLESCLKSDIOTX_DATARF_RESETSEG8SEG7SEG6SEG5SEG4SEG3CHG_LEDINUSE_LEDANS_LEDCOM1COM2SEG3SEG4SEG5KEYDKEYCKEYBKEYAKEY3KEY2KEY1MSG_LEDSEG12SEG10SEG9SEG11SEG8SEG7SEG6SEG10SEG11SEG12SEG9GNDRSSIKEYDKEYCKEYBKEYAKEY2KEY1CHG_LEDINUSE_LEDANS_LEDMSG_LEDVBATT2OSC_INCOM2COM1KEY3RX_ENRX_GAINTX_ENRADIO_ENVCCA 3.3V (DSP, MIC)VCCPA 3.3Vto RF PARTAnalogSPSP PAD SPNC: No Components(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(14)(13)(12)(18)(16)(15)(17)IC501IC601IC611IC3813.3V2.5V26.6msPower ON(Reset)TX 940mVp-p82KX-TG2448BXF / KX-TG2448BXS / KX-TGA254BXF / KX-TGA254BXS