Kenwood KDC-D301 Service Manual

Also see for KDC-D301: Instruction manual

Contents

Kenwood KDC-D301 Service Manual Manual pdf 3 page image

KDC-D3013COMPONENT DESCRIPTIONl SWITCH UNIT(X16-110X-XX)Ref.No. Component Name Application/Function Operation/Condition/CompatibilityIC1 LC75823W LCD driverQ1 2SC4081 Dimmer SW When Q1's base goes "Hi", Dimmer LEDs are turnedon.l ELECTRIC UNIT(X25-8902-71)Ref.No. Component Name Application/Function Operation/Condition/CompatibilityIC1 UPD780058GC255 System MI-COM.IC2 S-80830ANNP Reset IC When BU 5V voltage is less than 3.0V, IC outputs"Lo".IC5 NJM4565M-TE2 Isolation amp.IC6 NJM4565M-TE2 1/2 VCC & A.G.C.amp.IC7 BA3834F BPF ICQ1 2SC4081 BU 5V AVR While BACKUP is applied, AVR outputs +5V.Q2 2SA1870 or 2SB1450 Q1 and Q2 are inverted Darlington connection.Q3 2SC4081 Audio +B AVR While Q3's base goes "Hi", AVR outputs +8.0V.Q4 2SB1202Q5 2SC4081 Illumination +B AVR While Q5's base goes "Hi", AVR outputs +10.5V.Q6 2SB1202Q7 2SC4081 Servo +B AVR While Q7's base goes "Hi", AVR outputs +8.0V.Q8 2SB1202Q9 2SC4081 BU detection SWWhile BACKUP is applied, a base goes "Hi", and Q12is turned on.When momentary power down has detected, a basegoes "Lo", and Q12 is turned off.Q10 2SA1037K Panel 5V SW When a base goes "Lo" during panel closed, Q10 isturned on.Q11 2SC4081 Guide or Eject illumination SW When a base goes "Hi", Guide or Eject illuminationLED is lighting-up.Q12 DTA143EUA Changer mute SW When CHANGER MUTE REQUEST to H/U is worked,a base goes "Lo" and Q12 is turned on.Q13 DTC144EUA or UN5213 Buzzer SW When a base goes "Hi", Buzzer is turned on.Q14 DTC343TK Audio mute SW(L Ch) When a base goes "Hi", Audio mute is activated.Q15 DTC343TK Audio mute SW(R Ch) When a base goes "Hi", Audio mute is activated.Q16 DTC144EUA or UN5213 Changer reset SW When CHANGER RESET from H/U is worked, a basegoes "Hi" and Q19 is turned on.Q17 UMC2N SW 14VAudio +8V AVR, Illumination +B AVR, Servo +B AVRon/off controlWhen a base goes "Hi", Q17 is turned on, and EachAVR are working.Q18 DTC144EUA or UN5213 BU detection inverterQ19 UMC2N SW 5V CD MECHA. SW, BPF IC on/off controlWhen a base goes "Lo", Q19 is turned on, and Eachcircuits are working.Q20 UMC2N Audio mute driver When a base goes "Hi", Audio mute driver outputs"Hi".Q21 2SD2114K AGC Signal level controlQ22 DTC144EUA or UN5213 Changer control SW When CHANGER CONTROL from H/U goes "Hi",Q15 is turned on.Q23 2SA1037K LED +B SW When Q23's base goes "Hi", BU 5V is supplied to theQ24 DTC144EUA or UN5213 Switch Unit.