TK-3180 SCHEMATIC DIAGRAM347654321A B C D EX54-347 1/2C5244.7u1611A23Y32A4GND5 2Y6 3A7 1Y8 VCC11A23Y32A4GND5 2Y6 3A7 1Y8 VCCR5710C5384.7uR545 R546C5271u10CN507E40-6410-0512345L553R542 470R547R574C501 470pC525470pC5281u10C5561000pR544R541 470C5374.7uC5551uL550R57501VIN2VSS3NC14NC25VoUTR552 470C500 470pC503 470pR560470kL554R573470kC5234.7u16C502 470p R543 470CN508E40-6413-051234567891011121314151617181920C5531000p2SJ144(Y)Q505S DGR540 470C5541000p(X54-3470-XX)SIDE KEYSECTIONLCD ASSY(B38-0900-05)K1LCD CONTROLLCD CONTROLSW1VOLTAGEREGULATOR/LCDSW2SW1CONTRAST CONTROL5MGNDPTTDISPLAY UNITSW2LCDRSLCDCSCLKDATALCDRSTPTT470k(D) 27k(D)22k0 180kIC501XC6201P352MRIC503HD74LV2G34AUSGNDK1PTTSW2SW1C2+V5outRESETSCLP/SC1+C1-OSC1VciOSC2NCV5VssCSSIORSVDDC2-R/WVssIC502HD74LV2G34AUS3.51V3.51V4.98VNote : The components marked with a dot (•) are parts of layer 1.