Kenwood KCH-14, Service Manual

Page 1: ...ing or otherwise for any purpose without the prior written permission of Kenwood Disclaimer While every precaution has been taken in the preparation of this manual Kenwood assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the information contained herein Kenwood reserves the right to make changes to any products herein at any t...

Page 2: ... X54 3490 20 KCH 14 18 DISPLAY UNIT X54 3500 20 KCH 15 20 SCHEMATIC DIAGRAM DISPLAY UNIT X54 3490 20 KCH 14 22 DISPLAY UNIT X54 3500 20 KCH 15 24 KCH 14 KCH 15 Panel assy A62 1119 03 Knob K29 5276 03 K29 5277 03 K29 5305 03 K29 9353 13 K29 9354 03 K29 9356 03 Knob K29 4664 04 x 2 Panel assy A62 1117 03 Knob K29 4704 04 Knob K29 4704 04 Knob K29 5276 03 K29 5277 03 K29 5305 03 K29 9353 13 K29 9354 ...

Page 3: ...9 A 3 X54 349 B 3 9 Remove the 4 screws Ω holding the sub panel 10 Remove the sub panel keytop ç and cushion 4 5 5 6 7 8 9 10 11 11 11 11 14 12 13 3 3 2 1 CN2 CN4 X54 349 A 3 X54 349 B 3 X54 349 C 3 KCH 14 Disassembly of the Display unit X54 350 KCH 15 1 Remove the volume knob z and selector knob x 2 Remove the 2 hexagon nuts c 3 Remove the cable from the display unit X54 350 A 3 connector CN4 and...

Page 4: ...ing the double coated tape with your fingers 3 Remove the white covering paper from the other side of the sheet v then affix it to the other side of panel ASSY b Note Affix it while pulling the right and left sides of the transparent covering paper to make a smooth contact with no wrinkles Firmly affix the sheet to the panel ASSY by pushing the double coated tape with your fingers 4 Remove the tra...

Page 5: ...nit X54 349 B 3 Speaker packing convex drain hole part DISASSEMBLY FOR REPAIR Fitting the convex drain hole part of the speaker packing to the hollow drain hole part of the panel ASSY KCH 14 only Push the convex drain hole part of the speaker packing with a flat head screwdriver as shown in figure until drain hole of the speaker fit to the drain hole of the panel ...

Page 6: ...M1 DM2 SB KEY BACK LAMP LCD BACK LAMP S8 PF1 S9 PF2 S10 PF3 S14 PF4 S15 PF5 S1 POWER S2 S3 PTT HK D8 RX D9 TX AF VR IC1 TA7805F ENCODER SB HK ME MIC E TRD DM BLC PTT INT SP MIC 1 2 TRD IRS SB PS RESET IC3 30302M84Z2GP Microprocessor LCD ASSY ED1 Containing LCD driver IC CPU The on off signals of keys other than the power switch and the PTT and HOOK signals are converted to serial data and sent to ...

Page 7: ...he control unit Data is displayed on the 14 digit and 3 digit dot matrix alphanumeric display LCD brightness function From the control of the CPU s DM1 DM2 port you can switch the LCD KEY backlight or the optional KMC 28 key backlight as shown in the following table LCD LCD KEY KMC 28 brightness setting H H ON ON M M ON ON L L ON ON OFF OFF OFF OFF 5V AVR LCD ASSY SW SW SW SW SW SW SW SW REF DM1 D...

Page 8: ... BYTE GND 7 CNVSS GND 8 NC No connection 9 SFT O Beat Shift L Shift off H Shift on 10 RESET I CPU reset 11 XOUT O 14 7456MHz clock output 12 VSS GND 13 XIN I 14 7456MHz clock input 14 VCC 5V 15 NMI I NC 16 NC No connection 17 INT1 I Encoder interrupt 18 INT0 I RXD interrupt 19 PTT I PTT L On H Off 20 HOOK I HOOK L On H Off 21 END I Encoder data 22 KVL I KVL3000 L Connect H Disconnect 23 DM I O MIC...

Page 9: ...rge absorption D23 Zener diode Surge absorption D24 26 Varistor Surge absorption Ref No Part name Description Display unit X54 3490 20 KCH 14 IC1 IC AVR IC3 IC CPU Q1 3 Transistor DC switch Q4 FET DC switch Q5 20 Transistor 9V AVR D1 2 Diode Voltage protection D5 6 Diode Surge absorption D8 LED BUSY LED D9 LED TX LED D10 Zener diode Voltage reference D11 Varistor Surge absorption D16 Diode DC swit...

Page 10: ...0 80 800 8000 K 35 V EX C C 7 3 F S L 1 H 0 0 0 J Refer to the table above 1 Type 2 Shape 5 Voltage rating 4 Temp coefficient 3 Dimension 6 Value 7 Tolerance 7 6 5 4 3 2 1 EX C K 7 3 F F 1 H 0 0 0 Z 7 6 5 4 3 2 1 Chip CH RH UJ SL Chip B F Chip resistor Carbon EX R K 7 3 E B 2 B 0 0 0 J 7 6 5 4 3 2 1 RESISTORS Chip B F Carbon resistor Nomal type EX R D 1 4 B B 2 C 0 0 0 J 7 6 5 4 3 2 1 1 Type 2 Sha...

Page 11: ... C 0 010UF K C12 CK73GB1H102K CHIP C 1000PF K C13 CK73GB1E223K CHIP C 0 022UF K C14 CC73GCH1H471J CHIP C 470PF J C15 CK73GB1H102K CHIP C 1000PF K C16 CC73GCH1H101J CHIP C 100PF J C19 CC73GCH1H030C CHIP C 3 0PF C C20 21 CC73GCH1H150J CHIP C 15PF J C23 CK73GB1H102K CHIP C 1000PF K C27 29 CC73GCH1H101J CHIP C 100PF J C30 CK73GB1H102K CHIP C 1000PF K C32 CK73GB1H102K CHIP C 1000PF K C36 37 CC73GCH1H10...

Page 12: ...1 1852 14 CAUTION STICKER 8 2C G10 0775 04 FIBROUS SHEET LCD ASSY 10 1D G11 2663 04 SHEET MIC JACK 11 3C G11 4376 04 SHEET PANEL ASSY 12 2C G11 4380 14 SHEET 13 2D G11 4383 04 SHEET SUB PANEL 14 2D G11 4387 04 SHEET CYLINDRICAL BOSS 15 2C 2D G13 1713 04 CUSHION LCD ASSY 16 2D G13 2124 04 CUSHION KEYTOP 5KEY 18 3D G13 2125 14 CUSHION KEYTOP 2KEY 19 2D G13 2126 04 CUSHION KEYTOP 2KEY 20 2C G53 0838 ...

Page 13: ...B1J220J CHIP R 22 J 1 16W R25 R92 0670 05 CHIP R 0 OHM R26 RK73GB1J103J CHIP R 10K J 1 16W R27 RK73FB2A102J CHIP R 1 0K J 1 10W R28 29 R92 0670 05 CHIP R 0 OHM R32 34 RK73GB1J473J CHIP R 47K J 1 16W R35 RK73GB1J682J CHIP R 6 8K J 1 16W R36 RK73GB1J474J CHIP R 470K J 1 16W R37 RK73GB1J331J CHIP R 330 J 1 16W R38 RK73GB1J181J CHIP R 180 J 1 16W R39 40 RK73PB2H681J CHIP R 680 J 1 2W R41 42 RK73PB2H82...

Page 14: ... 33 ED1 J1 W1 S4 Display unit B 3 Display unit C 3 Display unit A 3 Ex2 Ex2 Dx2 51 706 6 7 21 705 17 702 701 704 36 701 16 B B A B C 40 10 A N82 2005 45 B N82 3006 46 C N87 2605 46 D N87 2606 45 E N87 2608 46 Parts with the exploded numbers larger than 700 are not supplied ...

Page 15: ...isplay unit A 2 8 E E Ex2 E 40 15 15 703 701 701 B B B C C 704 36 35 20 24 46 18 19 16 10 23 5 12 11 701 701 ED1 14 13 J1 W1 S4 EXPLODED VIEW KCH 15 B N82 3006 46 C N87 2605 46 E N87 2608 46 Parts with the exploded numbers larger than 700 are not supplied ...

Page 16: ... CASE H52 2109 02 26 PACKING FIXTURE H12 3182 02 711 PROTECTION BAG 42 KNOB K29 5276 03 43 KNOB K29 5277 03 44 KNOB K29 5305 03 47 KNOB K29 9353 13 48 KNOB K29 9354 03 49 KNOB K29 9356 03 41 KNOB K29 4704 04 50 SCREW SET N99 0364 05 Parts with the exploded numbers larger than 700 are not supplied ...

Page 17: ...D I O TX data input RX data output 7 PSW O Power switch control signal output 8 IGN O Ignition sense output 9 SB I Switched B TK 5710 B 13 6V TK 5710H B 13 4V 10 IRS I Remote speaker input 11 ES2 I Remote speaker input CN2 to Internal speaker 1 IRS O Remote speaker output 2 E GND CN3 to KRK 5 6DH 1 IGN I Ignition sense input 2 SB O Switched B TK 5710 B 13 6V TK 5710H B 13 4V 3 E GND 4 MIC I MIC si...

Page 18: ... Remote speaker output 2 ES2 O Remote speaker output CN3 to KRK 5 6DH 1 IGN I Ignition sense input 2 SB O Switched B 3 E GND 4 MIC I MIC signal input 5 ME MIC GND 6 AI1 I Auxiliary input 1 7 AI2 I Auxiliary input 2 8 AO1 O Auxiliary output 1 9 AO2 O Auxiliary output 2 CN4 to Display unit C 3 W1 1 INT1 I Encoder interrupt 2 E GND 3 END I Encoder data CN5 to LCD ASSY 1 E GND 2 VCC 5V 3 CE O Enable o...

Page 19: ... AI2 AO1 AO2 9 11 ES2 IRS SB IGN PS TRD 1 2 RESET E MIC ME C13 1 E VCC CE CL DI DO DISP LEDA LEDK NC 10 C14 C16 Q15 Q16 C9 R17 R19 R5 R8 R9 S1 POW VR1 R69 C10 C28 S8 PF1 S9 PF2 C21 C23 C30 C40 C41 C42 C43 C44 C46 C47 C53 C57 KVL TRD C2 C3 C6 C7 D2 D5 D6 CN10 CN11 CN15 CN16 D16 L2 L3 R11 R16 R25 Q1 Q2 Q3 Q4 D S G Q6 Q7 R1 R37 R38 R4 R7 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R70 R80 CN1 CN3 CN5 CN6...

Page 20: ... KCH 14 Foil side view J72 0946 19 DISPLAY UNIT X54 3490 20 KCH 14 Component side view J72 0946 19 PC BOARD KCH 14 15 Component side Foil side Layer 1 Layer 2 Component side Foil side Layer 1 Layer 2 Ref No Address Q11 6K Q13 6N Q15 4C Q16 4C D8 4B D9 4A Ref No Address IC1 13D IC3 12H Q1 12D Q2 12D Q3 11C Q4 12G Q5 13F Q6 11F Ref No Address D1 12D D2 12D D5 12D D6 12D D10 13E D11 9B D16 11E D18 11...

Page 21: ...L3 R11 R16 R25 Q1 Q2 Q3 Q4 D S G Q6 Q7 R1 R37 R38 R4 R7 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R70 R80 CN1 CN3 CN5 CN6 CN7 CN8 CN9 C11 C15 C19 R81 1 2 3 1 INT1 E END 3 W1 S4 1 5 6 7 8 1 2 3 4 3 J72 0946 19 A 3 J72 0946 19 A 3 J72 0946 19 B 3 J72 0946 19 B 3 J72 0946 19 C 3 J72 0946 19 C 3 E MIC ME HK SB ES2 NC PTT BLC DM KVL TRD E MIC ME HK SB ES2 NC PTT BLC DM 2 1 E IRS 1 INT1 E END 3 25 26 50 5...

Page 22: ...D23 D25 R16 R18 R19 R24 Q1 Q2 Q8 Q9 R1 R35 R2 R3 R37 R4 R38 R7 R66 R69 CN2 X1 C11 S2 S1 POW S3 J1 KVL TRD E MIC ME HK SB ES2 NC PTT BLC DM VR1 1 2 3 S8 PF1 S9 PF2 KVL TRD E MIC ME HK SB ES2 NC PTT BLC DM 2 1 ES2 IRS 1 11 ES2 IRS SB IGN PS TRD 1 2 RESET E MIC ME CN1 1 IGN SB E MIC ME AI1 AI2 AO1 AO2 9 CN3 IC1 I O G CN4 1 INT1 E END 3 1 E VCC CE CL DI DO DISP LEDA LEDK NC 10 CN5 B C E KCH 14 15 PC B...

Page 23: ...2 0947 19 A 2 D S G CN12 IC3 1 100 25 26 50 51 75 76 10 1 NC E EPM RXD BUSY TXD SCLK RESET CNVSS VCC W1 S4 1 INT1 E END 5 6 7 8 1 2 3 4 3 J72 0947 19 B 2 DISPLAY UNIT X54 3500 20 KCH 15 Foil side view J72 0947 19 DISPLAY UNIT X54 3500 20 KCH 15 Component side view J72 0947 19 PC BOARD KCH 14 15 Component side Foil side Layer 1 Layer 2 Component side Foil side Layer 1 Layer 2 Ref No Address Q3 4C Q...

Page 24: ...E END 3 J72 0947 19 B 2 J72 0947 19 A 2 J72 0947 19 A 2 KVL TRD E MIC ME HK SB ES2 NC PTT BLC DM 2 1 ES2 IRS 1 11 ES2 IRS SB IGN PS TRD 1 2 RESET E MIC ME CN1 1 IGN SB E MIC ME AI1 AI2 AO1 AO2 9 CN3 IC1 I O G CN4 1 INT1 E END 3 1 E VCC CE CL DI DO DISP LEDA LEDK NC 10 CN5 B C E D S G CN12 IC3 1 100 25 26 50 51 75 76 10 1 NC E EPM RXD BUSY TXD SCLK RESET CNVSS VCC W1 S4 1 INT1 E END 5 6 7 8 1 2 3 4...

Page 25: ...5 6 7 8 9 10 11 C4 1000p R19 4 7k R24 22 C11 0 01u R28 0 R11 1k C3 100p R80 2 2 R72 150 R13 4 7k C53 10u10 C48 330u16 L3 L1 R71 390 R16 560 J1 E56 0410 15 1 SB 2 HK 3 ME 4 MIC 5 E 6 TRD 7 KVL 8 DM 9 BLC 10 PTT 11 NC 12 ES2 R5 820 0 5 C16 100p KCH 14 DISPLAY UNIT X54 3490 20 A 3 D24 26 SURGE ABSORPTION DC SW X54 3490 20 C 3 D18 19 23 DC SW SURGE ABSORPTION POW VOLTAGE PROTECTION D1 2 D11 20 22 DC S...

Page 26: ... 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 C32 1000p R46 47k Q11 DTC144EUA R70 33k C44 1000p R38 180 CN7 R48 47k Q19 DTC114EE R49 47k R69 33k CN14 E40 5958 05 1 2 3 4 5 6 7 8 R56 47k S10 S70 0502 05 S9 S70 0502 05 R59 47k Q13 DTC144EUA S15 S70 0502 05 C36 100p CN9 R40 680 0 5 R60 47k R30 0 R58 47k 9V AVR AO2 9V AVR AO1 9V AVR SB 9V AVR 9V AVR ...

Page 27: ...1 IN 2 OUT D20 AVRM1608270MAB Q19 DTC114EE R49 47k R69 33k 1 2 3 4 5 6 7 8 9 10 11 CN14 E40 5958 05 1 2 3 4 5 6 7 8 C4 1000p R56 47k S10 S70 0502 05 S9 S70 0502 05 R59 47k R19 4 7k R24 22 Q13 DTC144EUA C11 0 01u S15 S70 0502 05 R28 0 R11 1k C3 100p R80 2 2 C36 100p R72 150 R13 4 7k CN9 C53 10u10 R40 680 0 5 C48 330u16 R60 47k L3 L1 R71 390 R16 560 R30 0 J1 E56 0410 15 1 SB 2 HK 3 ME 4 MIC 5 E 6 TR...

Page 28: ... D10 02CZ9 1 X Y R9 1k R25 0 CN16 C10 100p C50 1000p R5 820 0 5 D24 AVRM1608270MAB R66 47k R71 390 C49 0 1u C21 15p C4 1000p R1 0 C1 100p C59 100p 1 SB 2 HK 3 ME 4 MIC 5 E 6 TRD 7 KVL 8 DM 9 BLC 10 PTT 11 NC 12 ES2 C12 1000p C14 470p S1 S40 1420 05 S2 S70 0502 05 R79 1k R44 47k R77 1k R13 4 7k R3 1k X1 L77 1956 05 R16 560 R82 1k R83 1k X54 3500 20 B 2 DC SW BUSY KEY DC SW CONTROL UNIT X53 4120 10 ...

Page 29: ...0 Q13 DTC144EUA CN9 Q12 DTC144EUA R60 47k C23 1000p 1 NC 2 NC 3 NC 4 NC 5 NC 6 BYTE 7 CNVSS 8 NC 9 SFT 10 RESET 11 XOUT 12 VSS 13 XIN 14 VCC 15 NMI 16 NC 17 INT1 18 INT0 19 PTT 20 HOOK 21 END 22 KVL 23 DM 24 NC 25 BLC 26 NC 27 RXD2 28 TXD2 29 TXD 30 RXD 31 SCLK 32 BUSY 33 AI2 34 AI1 35 AO2 36 AO1 37 NC 38 NC 39 EPM 40 NC 41 NC 42 NC 43 NC 44 NC 45 NC 46 NC 47 NC 48 NC 49 NC 50 NC 51 52 53 54 55 56...

Page 30: ...S2 C12 1000p S9 S70 0502 05 R56 47k R43 47k C14 470p S1 S40 1420 05 C34 100p S2 S70 0502 05 R35 6 8k C32 1000p Q14 DTC144EE CN8 R79 1k R38 180 Q13 DTC144EUA R44 47k CN9 R77 1k R13 4 7k R3 1k Q12 DTC144EUA X1 L77 1956 05 R16 560 R60 47k C23 1000p 1 NC 2 NC 3 NC 4 NC 5 NC 6 BYTE 7 CNVSS 8 NC 9 SFT 10 RESET 11 XOUT 12 VSS 13 XIN 14 VCC 15 NMI 16 NC 17 INT1 18 INT0 19 PTT 20 HOOK 21 END 22 KVL 23 DM 2...

Page 31: ...1800 Vilvoorde Belgium 13 Boulevard Ney 75018 Paris France KENWOOD House Dwight Road Watford Herts WD18 9EB United Kingdom Amsterdamseweg 37 1422 AC Uithoorn The Netherlands Via G Sirtori 7 9 20129 Milano Italy Bolivia 239 08020 Barcelona Spain A C N 001 499 074 16 Giffnock Avenue Centrecourt Estate North Ryde N S W 2113 Australia Unit 3712 3724 Level 37 Tower one Metroplaza 223 Hing Fong Road Kwa...