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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”.
Q2 2SD2114K Illumination SW(Red) ON when the base goes “Hi”.
Q3 2SD2114K Illumination SW(Green) ON when the base goes “Hi”.
Q4 2SC2412Kor2SD601A LCD AVR
● ELECTRIC UNIT(X25-845X-XX)
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
IC1 UPD784216GF520 System MI-COM.
IC2 TDA7400D E-VOL. & N.C. MPX
IC3 M5237ML AVR IC IC is combined with Q5, and it works as the error
detection, the driver.
IC4 TDA7386 Power IC
IC6 LM2595S-5.0 MD SERVO AVR Output voltage 5.0V fixation. A DC/DC Converter with
the ON/OFF function.
IC7 PST9130NR Reset IC “L”:detection voltage below 3.0V
IC8 HD74HC27FP Mute logic 3 input NOR gate x3
IC10 TDA7479D RDS decoder
Q1 2SC4081or2SD1819A BU 5V AVR Inverted darlington connection
Q2 2SB1565F(E,F) On during BU applied.
Q3 DTA124EUAorUN5112 Audio 8V AVR ON/OFF SW Audio 8V AVR ON/OFF control
Q4
DTC144EKorUN2213orKRC104S
Q3 is turned ON when Q4’s base goes “Hi”.
Q5 2SB1565F(E,F) Audio 8V AVR Output voltage 8.3V
Q6
DTC144EKorUN2213orKRC104S
MD SERVO AVR ON/OFF SW
AVR IC is activated when Q6’s base goes “Hi”.
Q7 DTC144EUAorUN5213 Illmination AVR AVR output is ON when Q7’s base goes “Hi”.
Q8 DTA124EUAorUN5112
Q9 2SD1760
Q10 2SA1036K SW 5V ON when the base goes “Lo”.
Q13 2SB1277(Q,R) P-CON SW Q13 is turned ON when Q16’s base goes “Hi”.
Q16
DTC114YKorUN2214orKRC107S
Q14 2SA1037K P-CON protection Protect Q13 by turning ON when P-CON output is
grounded.
Q15
DTA124EKorUN2112orKRA103S
Prevents Q14 tuning ON during start-up after power
ON.
Q17 2SC2412Kor2SD601A
BU detection(Momentary power
ON when the base goes “Hi” during BU applied.
down detection)
Q18 2SC2412Kor2SD601A ACC detection ON when the base goes “Hi” during ACC applied.
Q19
DTA124EKorUN2112orKRA103S
Mute driver for Audio mute SW
ON when the base goes “Lo”.
Q20
DTC144EKorUN2213orKRC104S
E-VOL. mute SW E-VOL. is muted when the base goes “Hi”.
Q21 DTC143TKorUN2216 Audio mute SW Audio pre-outs are muted when the base goes “Hi”.
Q22 DTC143TKorUN2216
Q23
DTC114YKorUN2214orKRC107S
SVR SW
POWER IC RESET is activated when the base goes “Hi”.
Q24 2SA1576A Panel detection SW ON when the base goes “Lo” during the panel closed.
Q25
DTC124EKorUN2212orKRC103S
FM+B SW Q26 is turned ON when Q25’s base goes “Hi”.
Q26 2SB1277(Q,R) ON during FM reception
Q27
DTC124EKorUN2212orKRC103S
AM+B SW Q28 is turned ON when Q27’s base goes “Hi”.
Q28 2SB1277(Q,R) ON during AM reception
Q29 2SC4081or2SD1819A
Composite signal output buffer
Q30 2SC4081or2SD1819A Noise buffer
Q31 DTC114TKorUN2215 AFC time constant SW OFF during FM seek, ON during FM reception
Q32
DTA124EKorUN2112orKRA103S
Q31 is turned OFF when Q32’s emitter goes “Lo”.
Q33
DTC144EKorUN2213orKRC104S
RESET SW System RESET is activated when the panel reset SW
is pushed.
Q34 2SC4081or2SD1819A DSI driver ON when the base goes “Hi”.