Kenwood KDC-D301, Руководство по обслуживанию

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KDC-D301
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COMPONENT DESCRIPTION
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SWITCH UNIT(X16-110X-XX)
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
IC1 LC75823W LCD driver
Q1 2SC4081 Dimmer SW
When Q1's base goes "Hi", Dimmer LEDs are turned
on.
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ELECTRIC UNIT(X25-8902-71)
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
IC1 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 IC
Q1 2SC4081
BU 5V AVR
While BACKUP is applied, AVR o5V.
Q2 2SA1870 or 2SB1450 Q1 and Q2 are inverted Darlington connection.
Q3 2SC4081
Audio +B AVR While Q3's base goes "Hi", AVR o8.0V.
Q4 2SB1202
Q5 2SC4081
IllumiB AVR While Q5's base goes "Hi", AVR o10.5V.
Q6 2SB1202
Q7 2SC4081
Servo +B AVR While Q7's base goes "Hi", AVR o8.0V.
Q8 2SB1202
Q9 2SC4081 BU detection SW
While BACKUP is applied, a base goes "Hi", and Q12
is turned on.
When momentary power down has detected, a base
goes "Lo", and Q12 is turned off.
Q10 2SA1037K Panel 5V SW
When a base goes "Lo" during panel closed, Q10 is
turned on.
Q11 2SC4081 Guide or Eject illumination SW
When a base goes "Hi", Guide or Eject illumination
LED 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 base
goes "Hi" and Q19 is turned on.
Q17 UMC2N SW 14V
Audio +8V AVR, IllumiB AVR, Servo +B AVR
on/off control
When a base goes "Hi", Q17 is turned on, and Each
AVR are working.
Q18 DTC144EUA or UN5213 BU detection inverter
Q19 UMC2N SW 5V
CD MECHA. SW, BPF IC on/off control
When a base goes "Lo", Q19 is turned on, and Each
circuits are working.
Q20 UMC2N Audio mute driver
When a base goes "Hi", Audio mute driver outputs
"Hi".
Q21 2SD2114K AGC Signal level control
Q22 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 the
Q24 DTC144EUA or UN5213 Switch Unit.