Component Description - Kenwood KDC-1016 Service Manual

KDC-1016/115S
ELECTRIC UNIT(X25-8420-XX)
Ref.No. Component Name
IC1 M38258MCD067FP
IC2 TDA7400D
IC4 TDA7386
IC5 PST9135NR
IC6 HD74HC27FP
Q1 2SB1565(E,F)or2SB1655(E,F)
Q2 2SC2412Kor2SD601A
Q3 DTA124EKorUN2112orKRA103S
Q4 DTC144EKorUN2213orKRC104S
Q6 2SB1184
Q7 2SC2412Kor2SD601A
Q8 2SD2396
Q9 DTC144EKorUN2213orKRC104S
Q10 DTA124EKorUN2112orKRA103S
Q11 2SB1184
Q12 2SC2412Kor2SD601A
Q13 2SC2412Kor2SD601A
Q14 2SC2412Kor2SD601A
Q15 2SA1036K
Q16 2SB1277(Q,R)
Q17 DTC114YKorUN2214
Q18 2SB1277(Q,R)
Q21 DTC114YKorUN2214
Q19 2SB709A
Q20 DTA124EKorUN2112orKRA103S
Q23 DTA124EKorUN2112orKRA103S Mute driver for Audio mute SW ON when the base goes "Lo".
Q24 DTC144EKorUN2213orKRC104S E-VOL. mute SW
Q25 DTC114YKorUN2214
Q28 DTC143TKorUN2216
Q29 DTC143TKorUN2216
Q30 2SB1277(Q,R)
Q31 DTC124EKorUN2212
Q32 2SB1277(Q,R)
Q33 DTC124EKorUN2212
Q40 DTA144EKorUN2113
4

COMPONENT DESCRIPTION

Application/Function
System MI-COM.
E-VOL. & N.C. MPX
Power IC
Reset 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
SVR SW
Audio mute SW
FM+B SW
AM+B SW
RESET SW
Operation/Condition/Compatibility
"Lo": Detection voltage below 3.5V
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".
Inverted darlington connection
Q6 is turned ON when Q7's base goes "Hi".
ON when the base goes "Hi".
Inverted darlington connection
ON when Q9'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".
Q16 is turned ON when Q17's base goes "Hi".
ON during FM/AM reception
Q18 is turned ON when Q21's base goes "Hi".
ON while power is on or CD loading/eject.
Protect Q18 by turning ON when P-CON output is grounded.
Prevents Q19 tuning ON during start-up after power ON.
E-VOL. is muted when the base goes "Hi".
POWER IC RESET is activated when the base goes "Hi".
Audio pre-outs are muted when the base goes "Hi".
Q30 is turned ON when Q31's base goes "Hi" .
ON during FM reception
Q32 is turned ON when Q33's base goes "Hi" .
ON during AM reception
Audio mute is activated when the panel reset SW is pushed.