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© 2003-11 PRINTED IN JAPAN
B51-8669-00 (N) 1011

VOICE GUIDE & STORAGE UNIT

VGS-1

SERVICE MANUAL

CIRCUIT DESCRIPTION

Recording/Playback Operation .................................................................... 2

I/O Ports ......................................................................................................... 2

Beat Shift Circuit ........................................................................................... 3

Amateur Transceiver Identification ............................................................. 3

SEMICONDUCTOR DATA

MCU : HD6433024D01TE (IC2) ...................................................................... 4

Reset IC : S-80930CNNBG80 (IC1) ................................................................ 5

Analog Switch : TC7W66FK (IC53, IC54) ...................................................... 5

Bus Switch with Level Shifting : TC7MBD3244AFK (IC57) ........................ 5

COMPONENTS DESCRIPTION ......................................................................... 6

PARTS LIST ........................................................................................................ 6

PC BOARD

ACCESSORY UNIT (X42-3250-60) ................................................................ 8

SCHEMATIC DIAGRAM ..................................................................................... 9

TERMINAL FUNCTION .................................................................BACK COVER

CONTENTS

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Summary of Contents for VGS-1

Page 1: ...2 Beat Shift Circuit 3 Amateur Transceiver Identification 3 SEMICONDUCTOR DATA MCU HD6433024D01TE IC2 4 Reset IC S 80930CNNBG80 IC1 5 Analog Switch TC7W66FK IC53 IC54 5 Bus Switch with Level Shifting TC7MBD3244AFK IC57 5 COMPONENTS DESCRIPTION 6 PARTS LIST 6 PC BOARD ACCESSORY UNIT X42 3250 60 8 SCHEMATIC DIAGRAM 9 TERMINAL FUNCTION BACK COVER CONTENTS ...

Page 2: ...H IC2 MCU IC53 IC54 ATT IC55 Buffer IC51 LPF IC51 LPF AO AI X1 X1 AN0 78 DA0 84 IC52 Buffer IC52 LPF amp X30 Fig 1 Signal flow Attenuator Circuit An attenuator circuit with division resistors is built by con trolling four analog switches of IC53 and IC54 with pins 95 to 98 of the MCU IC2 The output level is changed in 8 steps with 4 bit data R66 R67 R71 R72 R64 IC53 IC54 Fig 2 ATT circuit Attenuat...

Page 3: ...e MCU IC2 goes Low level Q2 turns off and Q1 turns on because a 5V bias is applied to its base In this condition C10 is shorted so the oscillation frequency is un changed Beat Shift Circuit On Pin 94 of the MCU goes High level Q2 turns on and Q1 turns off because its base is pulled down to GND In this condition C10 is connected in series to the crystal oscillator and the oscillation frequency incr...

Page 4: ...34 D8 D15 I O Data bus IC3 IC5 35 VCC2 I 3 3V 36 43 A0 A7 O Address bus IC3 IC5 44 VSS3 I GND 45 56 A8 A19 O Address bus IC3 IC5 57 VSS4 I GND 58 _WAIT I Not used Pull Up 59 _BREQ I Not used Pull Up 60 NC O Not used 61 fai O For system clock frequency check 62 _STBY I Not used Pull Up 63 RESET I Reset input Lo RESET 64 NMI I Not used Pull Up 65 VSS5 I GND 66 EXTAL I System clock input 11 0592 MHz ...

Page 5: ... Pin No Port Name I O Function Remarks 78 AN0 I A D conversion Voice input 79 83 AN1 AN5 I Not used Pull Down 84 DA0 O D A conversion Voice output 85 NC O Not used 86 AVSS I GND Analog GND 87 EN I Enable input Power save relese interruption Lo Enable 88 _CS3 O Chip select output IC5 Lo Chip select 89 _CS2 O Chip select output IC3 Lo Chip select 90 _CS1 O Chip select output SRAM Lo Chip select 91 N...

Page 6: ... Canada T England E Europe X Australia M Other Areas W World M South East Asia B62 1741 00 INSTRUCTION MANUAL F10 2492 04 SHIELDING COVER G13 1974 04 CUSHION 21X21X1 0 G13 1992 04 CUSHION 21X21X2 5 G13 1993 04 CUSHION 20X30X2 0 G13 1994 04 CUSHION 20X30X12 G13 1995 04 CUSHION 20X30X1 0 C1 CK73GB1A105K CHIP C 1 0UF K C2 CC73HCH1H101J CHIP C 100PF J C3 CK73HB1H471K CHIP C 470PF K C4 CK73HB1A104K CHI...

Page 7: ...6W R18 R92 1368 05 CHIP R 0 OHM R19 RK73HB1J103J CHIP R 10K J 1 16W R23 R92 1368 05 CHIP R 0 OHM R24 RK73HB1J102J CHIP R 1 0K J 1 16W R25 R92 1368 05 CHIP R 0 OHM R27 28 R92 1368 05 CHIP R 0 OHM R51 53 RK73HB1J223J CHIP R 22K J 1 16W R54 RK73HB1J472J CHIP R 4 7K J 1 16W R55 RK73HB1J473J CHIP R 47K J 1 16W R56 58 RK73HB1J223J CHIP R 22K J 1 16W R59 RK73HB1J393J CHIP R 39K J 1 16W R60 RK73HB1J473J C...

Page 8: ...60 R61 R62 R63 R64 R66 R67 R69 R71 R72 R74 R75 R76 R77 R78 R87 R88 R89 CN1 R91 R92 CP3 C13 C14 C15 C16 1 100 25 26 50 51 75 76 J72 0897 19 J72 0897 19 D S G D S G 1 1 3 4 5 4 5 8 1 4 5 8 1 2 3 4 1 10 11 20 1 4 5 8 1 2 25 26 BUSY SO CLK USEL DG AO AG PLAY SI EN RESET AG AI 5C RV1 RV2 RV3 RV4 ACCESSORY UNIT X42 3250 60 Component side view J72 0897 19 ACCESSORY UNIT X42 3250 60 Foil side view J72 089...

Page 9: ...Q8 57 DQ2 58 DQ11 59 CIOS 60 DQ5 61 DQ14 IC5 MB84VD21091KW2 1 NC1 2 A7 3 LBS 4 WP ACC 5 WE 6 A8 7 A11 8 A3 9 A6 10 UBS 11 RESET 12 CE2S 13 A19 14 A12 15 A15 16 A2 17 A5 18 A18 19 RY BY 20 NC2 21 A9 22 A13 23 NC3 24 NC4 25 A1 26 A4 27 A17 28 A10 29 A14 30 NC5 31 NC6 32 NC7 33 A0 34 VSS1 35 DQ1 36 DQ6 37 SA 38 A16 39 NC8 40 CEF 41 OE 42 DQ9 43 DQ3 44 DQ4 45 DQ13 46 DQ15 A 1 47 CIOF 48 CE1S 49 DQ0 50...

Page 10: ...urt Estate North Ryde N S W 2113 Australia KENWOOD ELECTRONICS HONG KONG LTD Unit 3712 3724 Level 37 Tower one Metroplaza 223 Hing Fong Road Kwai Fong N T Hong Kong KENWOOD ELECTRONICS TECHNOLOGIES S PTE LTD Sales Marketing Division 1 Ang Mo Kio Street 63 Singapore 569110 VGS 1 TERMINAL FUNCTION Accessory Unit CN1 Pin No Name I O Function Remarks 1 BUSY O Busy signal output Hi During the Flash mem...

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