Kenwood KDC-V6017, Service Manual

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KDC-V6017,V6090R/RY,V7018R
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COMPONENTS DESCRIPTION
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
IC1 UPD780076GK501 Panel MI-COM.
IC2 LC75878W LCD driver
IC3 RS-171 Remote sensor IC
Q1 2SC2412K or 2SD601A VLCD AVR
Q2 2SD2114K Green LED SW When a base goes "Hi", GREEN LEDs are turned on.
Q3 2SD2114K Red LED SW When a base goes "Hi", RED LEDs are turned on.
Q4 DTA144EUA or KRA304 REMO SW
While a base goes "Lo", PAN 5V is supplied to the Remote
sensor IC.
Q5 2SC2412K or 2SD601A CONT R SW When a base goes "Hi", RED LEDs are turned on.
Q6 2SC2412K or 2SD601A CONT G SW When a base goes "Hi", GREEN LEDs are turned on.
Q7 2SC2412K or 2SD601A CONT B SW When a base goes "Hi", BLUE LEDs are turned on.
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
IC1 UPD703033GC076 System MI-COM.
IC2 TDA7407D E.VOL & N.C.MPX IC
IC3 HD74HC02FP
or TC74HC02AF
Mute logic 2-input NOR x 4
IC4 TA8263BH Power AMP. IC
IC7 TDA7479D RDS decoder
IC8 S-80837ANNP Reset IC When BU 5V voltage is less than 3.7V, IC outputs "Lo".
Q1 DTC143TUA or KRC410 Pre mute (Front L) When Q1's base goes "Hi", Pre-output is muted.
Q2 DTC143TUA or KRC410 Pre mute (Front R) When Q2's base goes "Hi", Pre-output is muted.
Q5 DTC143TUA or KRC410 Pre mute (Rear L) When Q5's base goes "Hi", Pre-output is muted.
Q6 DTC143TUA or KRC410 Pre mute (Rear R) When Q6's base goes "Hi", Pre-output is muted.
Q7 DTA124EUA or KRA303 Mute driver
When BU detection SW or System RESET or MI-COM.'s
Pre-mute is working, a base goes "Lo", and Q7 is turned on.
Q11 2SC4081 or 2SD1819A
BU 5V AVR
While BACKUP is applied, AVR o5V.
Q12 2SB1548(P) Q11 and Q12 are inverted Darlington connection.
Q13 2SA1576A or 2SB1218A SW 5V
While a base goes "Lo", SW 5V is supplied to the
microprocessor peripheral circuits.
Q14 2SC4081 or 2SD1819A
A8V AVR When Q14's base goes "Hi", A8V AVR outputs 8V.
Q15 2SB1548(P)
Q16 DTC124EUA or UN5212 A8V AVR and SERVO +B AVR ON/OFF control
Q17 DTA124EUA or KRA303
SW14V SW While Q16's base goes "Hi", Q17 is turned on,
A8V AVR and SERVO +B AVR are working.
Q18 2SD2375 SERVO +B AVR When Q18's base goes "Hi", SERVO +B AVR outputs 8V.
Q19 DTC124EUA or UN5212 ILL +B AVR ON/OFF control
Q20 DTA124EUA or KRA303
ILL +B SW While Q19's base goes "Hi", Q20 is turned on,
and ILL +B AVR is working.
Q21 2SB1184
ILL +B AVR
While Q22's base goes "Hi", AVR o10.5V.
Q22 2SC4081 or 2SD1819A Works during POWER ON mode with a panel attached to the set.
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SWITCH UNIT (X13-99XX-XX)
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ELECTRIC UNIT (X25-87XX-XX)