Components Description - Kenwood KDC-2016 Service Manual

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SWITCH UNIT(X13-9680-1X)
Ref.No. Component Name
IC1 LC75853NE
IC2 RS-171
Q1 DTA114EKorUN2111 key-matrix permission SW
ELECTRIC UNIT(X25-8430-XX)
Ref.No. Component Name
IC1 UPD780058GC130 System MI-COM.
IC1 UPD780058GC144 System MI-COM.
IC2 TDA7400D
IC3 PST9130NR
IC4 TDA7386
IC5 HD74HC27FP
Q1 2SB1565F(E,F)
Q2 2SC1740S
Q3 DTA124EKorUN2112
Q4 DTC144EKorUN2213
Q5 2SB1184
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Q6 2SC1740S
Q7 2SD2396F40
Q8 DTC144EKorUN2213
Q9 DTA124EKorUN2112
Q10 2SB1184
Q11 2SC1740S
Q12 2SC1740S
Q13 2SC1740S
Q14 2SA1036K
Q15 2SB1277(Q,R)
Q16 DTC114YKorUN2214
Q17 2SB1277(Q,R)
Q20 DTC114YKorUN2214
Q18 2SA1037K
Q19 DTA124EKorUN2112
Q50 DTC144EKorUN2213
Q150 DTC114YKorUN2214
Q153 DTC143TKorUN2216
Q154 DTC143TKorUN2216
Q155 DTA124EKorUN2112
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Q156 DTC144EKorUN2213
Q200 2SB1277(Q,R)
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Q201 DTC124EKorUN2212
Q202 2SB1277(Q,R)
Q203 DTC124EKorUN2212
Q207 2SA1037K
COMPONENT DESCRIPTION
Application/Function
LCD driver with key-matrix
Remote control light sensor
Application/Function
E-VOL. & N.C. MPX
Reset IC
Power IC
Mute logic
BU 5V AVR
SW14V
Audio 8V AVR
Servo AVR
Illumination AVR
BU detection(Momentary power down detection)
ACC detection
SW 5V
P-ANT SW
P-CON SW
P-CON protection
RESET SW
SVR SW
Audio mute SW
Mute driver for Audio mute SW
E-VOL. mute SW
x ao u163
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FM+B SW
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AM+B SW
Panel detection SW
KDC-2016/215S/35MR
2 9
8
Operation/Condition/Compatibility
Ready on key-matrix
Operation/Condition/Compatibility
"Lo": Detection voltage below 3.0V
3 input NOR gate x3
Inverted darlington connection
ON during BU applied
Audio 8V AVR and Servo AVR ON/OFF control
Q3 is turned ON when Q4's base goes "Hi".
Q5 is turned ON when Q6's base goes "Hi".
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Inverted darlington connection
ON when the base goes "Hi".
Q10 is turned ON when Q8's base goes "Hi".
ON when the base goes "Hi" during BU applied.
ON when the base goes "Hi" during ACC applied.
ON when the base goes "Lo".
Q15 is turned ON when Q16's base goes "Hi".
ON during FM/AM reception
Q17 is turned ON when Q20's base goes "Hi".
ON while power is on or CD loading/eject.
Protect Q17 by turning ON when P-CON output is grounded.
Prevents Q18 tuning ON during start-up after power ON.
System RESET is activated when the panel reset SW is pressed.
POWER IC RESET is activated when the base goes "Hi".
Audio pre-outs are muted when the base goes "Hi".
ON when the base goes "Lo".
E-VOL. is muted when the base goes "Hi".
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Q200 is turned ON when Q201's base goes "Hi".
.
ON during FM reception
Q202 is turned ON when Q203's base goes "Hi".
ON during AM reception
ON when the base goes "Lo" during the panel closed.
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