105KX-TG8421E/KX-TG8422E/KX-TG8423E/KX-TG8424E/KX-TGA840E15.5. Replacement Part List1. RTL (Retention Time Limited)Note:The “RTL” marking indicates that its Retention Time isLimited.When production is discontinued, this item will con-tinue to be available only for a specific period of time.This period of time depends on the type of item, andthe local laws governing parts and product retention.At the end of this period, the item will no longer beavailable.2. Important safety noticeComponents identified by the mark indicates specialcharacteristics important for safety. When replacing anyof these components, only use specified manufacture’sparts.3. The S mark means the part is one of some identical parts.For that reason, it may be different from the installed part.4. ISO code (Example: ABS-94HB) of the remarks columnshows quality of the material and a flame resisting gradeabout plastics.5. RESISTORS & CAPACITORSUnless otherwise specified;All resistors are in ohms (Ω) k=1000 Ω, M=1000 kΩAll capacitors are in MICRO FARADS (μF)p=μμF*Type & Wattage of Resistor15.5.1. Base Unit15.5.1.1. Cabinet and Electrical Parts15.5.1.2. Main P.C.Board PartsNote:(*1) When replacing IC7, IC401 or X1, make the adjustmentusing PNZZTG8421E. Refer to Base Unit (P.68) of Thingsto Do after Replacing IC or X'tal.(*2) When you removing E1, use special tools (ex. Hot airdisordering tool).(*3) Backside of this IC has a ground plate.(*4) Supplied IC is Flat Package Type.Safety Ref.No.Part No. Part Name & Description Remarks1 PNGP1050Y1 PANEL,LCD (for KX-TG8421EB)ABS-HB1 PNGP1050X4 PANEL,LCD (for KX-TG8421EM)ABS-HB1 PNGP1050X3 PANEL,LCD (for KX-TG8421EN)ABS-HB2 PNGG1035Z1 GRILLE (for KX-TG8421EB) ABS-HB2 PNGG1035Z2 GRILLE (for KX-TG8421EM/EN)ABS-HB3 PNKM1071Y1 CABINET BODY (for KX-TG8421EB)ABS-HB3 PNKM1071X3 CABINET BODY (for KX-TG8421EM)ABS-HB3 PNKM1071X2 CABINET BODY (for KX-TG8421EN)ABS-HB4 K2ECYZ000001 JACK,DC5 L0AD02A00026 SPEAKER6 PQHG10729Z RUBBER PARTS,SPEAKER7 PQHR11313Z GUIDE,SPEAKER ABS-HB8 PQJJ1T039Y JACK,MODULAR9 PNKE1028Z1 CASE,CHARGE TERMINAL (forKX-TG8421EB)PS-HB9 PNKE1028Z2 CASE,CHARGE TERMINAL (forKX-TG8421EM/EN)PS-HB10 PNHR1104Z OPTI CCONDUCTIVEPARTS,LED LENSPS-HB11 PNBC1023Z1 BUTTON,ERASE ABS-HB12 PNBC1266Y1 BUTTON,ANSWER ON ABS-HB13 PNBC1024Z1 BUTTON,STOP ABS-HB14 PNBC1025Z1 BUTTON,LOCATOR ABS-HB15 PNBC1018Z1 BUTTON,NAVIGATOR KEY (forKX-TG8421EB)ABS-HB15 PNBC1018Y5 BUTTON,NAVIGATOR KEY (forKX-TG8421EM)ABS-HB15 PNBC1018Y4 BUTTON,NAVIGATOR KEY (forKX-TG8421EN)ABS-HB16 PNHR1010Z GUIDE,BUTTON PS-HB17 PNBC1001Z2 BUTTON,MESSAGE (for KX-TG8421EB/EM)AS-HB17 PNBC1001Z5 BUTTON,MESSAGE (for KX-TG8421EN)AS-HB18 PNJK1047Z KEYBOARD SWITCH19 PNYE1011Z SPACER,ANTENNA20 PNJT1025Z CHARGE TERMINAL21 PNLA1002Z ANTENNA22 PNKF1054X1 CABINET COVER (for KX-TG8421EB/EM)PS-HB22 PNKF1054X2 CABINET COVER (for KX-TG8421EN)PS-HB23 PQHA10023Z RUBBER PARTS,FOOT24 PNGT1828Z NAME PLATE (for KX-TG8421EB)24 PNGT1828X NAME PLATE (for KX-TG8421EM)24 PNGT1828Y NAME PLATE (for KX-TG8421EN)Safety Ref.No.Part No. Part Name & Description RemarksPCB1 PNWP1G8421EH MAIN P.C.BOARD ASS'Y(RTL)(ICs)IC1 C0CBAYG00016 ICIC7 C1CB00002906 IC (BBIC(FLASH))(*1)(*3)(*4)SIC401 PQWICD300EHR IC (EEPROM) (*1)IC421 C3FBMY000195 ICIC801 C1CB00001842 IC (*3)(TRANSISTORS)Q3 B1ACGP000007 TRANSISTOR(SI)Q4 PQVTBF822T7 TRANSISTOR(SI)Q5 2SD0874AS TRANSISTOR(SI)Q8 B1ADGE000004 TRANSISTOR(SI)Q9 B1ADGE000004 TRANSISTOR(SI)Q421 2SC6054JSL TRANSISTOR(SI)(DIODES)D1 B0JCME000035 DIODE(SI)Safety Ref.No.Part No. Part Name & Description Remarks