Instruction/ maintenance manual of the product KMD-671R Kenwood
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© 2000-1 PRINTED IN JAPAN B51-7580-00(S) 2209 SERVICE MANUAL MD RECEIVER KMD-671R ● This service manual does not include information on the MD mechanism assembly (explodedview, parts list, schematic diagram or mechanism description).
BLOCK DIAGRAM KMD-671R 2 A8V SW5V UP BACK and E-VOL MPX CH MD AM FM VDD QUAL LEVEL MP IN IC2 Q21,22 MUTE MUTE DRIVER Q19,20 IC8, Q23 200mV 170mV 1200mV 1200mV BUFF Q29 FM+B AM+B Q27,28 TUN5V A UDIO OUT VDD 5V IF1/IF2/PLL+B AM+B FM+B S-METER SD ANT S 5.
KMD-671R 3 COMPONENT DESCRIPTION ● SWITCH UNIT(X13-9702-71) Ref.No. Component Name Application/Function Operation/Condition/Compatibility IC1 LC75808W LCD driver with key-matrix IC2 RS-171 Remote control light sensor Q1 DTA114EKorUN2111 Key-matrix permission SW Ready on key-matrix, ON when the base goes “Lo”.
KMD-671R 4 MICROCOMPUTER'S DESCRIPTION ● Terminal Description Pin No. Pin Name I/O Description Processing Operation 1 TYPE 0 I Destination type input terminal 0 Pull up to BU 5V lines 2 TYPE 1 I Destination type input terminal 1 Pull down to GND 3 N.
Pin No. Pin Name I/O Description Processing Operation 50 N.C. O Not used 51 AVDD - VDD connection terminal Connected to BU 5V lines 52 AVREF 0 - VDD connection terminal(A/D converter reference Connected to BU 5V lines voltage input) 53 PHONE I PHONE detection input 1V or less: TEL MUTE, 2.
Pin No. Pin Name I/O Description Processing Operation 50 N.C. O Not used 51 AVDD - VDD connection terminal Connected to BU 5V lines 52 AVREF 0 - VDD connection terminal(A/D converter reference Connected to BU 5V lines voltage input) 53 PHONE I PHONE detection input 1V or less: TEL MUTE, 2.
ELECTRIC UNIT PC BOARD (Component Side V iew) A B C D E F G I H 1 2 3 4 5 6 7 SWITCH UNIT Refer to the schematic diagram for the values of resistors and capacitors.
Refer to the schematic diagram for the values of resistors and capacitors. 9 10 J K L M N O P R Q 1 2 3 4 5 6 7 SWITCH UNIT ELECTRIC UNIT PC BOARD (Foil Side V iew) R18 R25 C8 R13 BE E B C4 C10 C5 R19.
A B C D E F G I H 1 2 3 4 5 6 7 J1 D12 D13 Q18 Q17 DETECTION ACC DETECTION D6 D11 D10 D9 Q13 Q14 Q15 P-CON SW PRO TECTION Q16 P-CON SW D3 D1 D2 Q5 Q3 Q4 Q1 Q2 B.
J K L M N O P R Q 1 2 3 4 5 6 7 CN1 J4 E-VOL & NC MPX POWER IC Q25 Q26 FM +B WH1 A1 J3 ANT IN SW SVR SW Q29 COMPOSITE OUT BUFFER Q22 Q21 Q28 Q27 T o MD MECHANISM Q24 D25 D34 D35 D37 D36 D33 D32 D30 D31 Q23 D19 3 2/2 X13- J1 SW AM +B DET .
S T U V W X Y AA Z 1 2 3 4 5 6 7 CA UTION: F or continued saf ety , replace safety critical components only with manuf acturer’ s recommended par ts (ref er to, parts list).
KMD-671R 17 A B 1 2 3 EXPLODED VIEW (UNIT) P ar ts with exploded numbers larger than 700 are not suppied..
KMD-671R P ARTS LIST 18 Ref.No. Parts No. Description A d d A d d N e w Dest inati on Ref.No. Parts No. Description A d d A d d N e w Dest inati on ∗ New P ar ts P ar ts without P ar ts No. are not supplied. Les ar ticles non mentionnes dans le P ar ts No .
KMD-671R P ARTS LIST 19 Ref.No. Parts No. Description A d d A d d N e w Dest inati on Ref.No. Parts No. Description A d d A d d N e w Dest inati on ∗ New P ar ts P ar ts without P ar ts No . are not supplied. Les ar ticles non mentionnes dans le P ar ts No .
KMD-671R P ARTS LIST 20 Ref.No. Parts No. Description A d d A d d N e w Dest inati on Ref.No. Parts No. Description A d d A d d N e w Dest inati on ∗ New P ar ts P ar ts without P ar ts No. are not supplied. Les ar ticles non mentionnes dans le P ar ts No .
KMD-671R P ARTS LIST 21 Ref.No. Parts No. Description A d d A d d N e w Dest inati on Ref.No. Parts No. Description A d d A d d N e w Dest inati on ∗ New P ar ts P ar ts without P ar ts No . are not supplied. Les ar ticles non mentionnes dans le P ar ts No .
KMD-671R 22 KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. SPECIFICA TIONS KENWOOD ELECTRONICS IT ALIA S.p.A. Via G. Sirtori 7/9, 20129 Milano, Italy KENWOOD IBÉRICA S.
An important point after buying a device Kenwood KMD-671R (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Kenwood KMD-671R yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Kenwood KMD-671R - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Kenwood KMD-671R you will learn all the available features of the product, as well as information on its operation. The information that you get Kenwood KMD-671R will certainly help you make a decision on the purchase.
If you already are a holder of Kenwood KMD-671R, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Kenwood KMD-671R.
However, one of the most important roles played by the user manual is to help in solving problems with Kenwood KMD-671R. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Kenwood KMD-671R along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
