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SWITCH UNIT(X16-110X-XX)
Ref.No.
Component Name
IC1
LC75823W
Q1
2SC4081
ELECTRIC UNIT(X25-8902-71)
Ref.No.
Component Name
IC1
UPD780058GC255
IC2
S-80830ANNP
IC5
NJM4565M-TE2
IC6
NJM4565M-TE2
IC7
BA3834F
Q1
2SC4081
Q2
2SA1870 or 2SB1450
Q3
2SC4081
Q4
2SB1202
Q5
2SC4081
Q6
2SB1202
Q7
2SC4081
Q8
2SB1202
Q9
2SC4081
Q10
2SA1037K
Q11
2SC4081
Q12
DTA143EUA
Q13
DTC144EUA or UN5213
Q14
DTC343TK
Q15
DTC343TK
Q16
DTC144EUA or UN5213
Q17
UMC2N
Q18
DTC144EUA or UN5213
Q19
UMC2N
Q20
UMC2N
Q21
2SD2114K
Q22
DTC144EUA or UN5213
Q23
2SA1037K
Q24
DTC144EUA or UN5213
COMPONENT DESCRIPTION
Application/Function
LCD driver
Dimmer SW
Application/Function
System MI-COM.
Reset IC
Isolation amp.
1/2 VCC & A.G.C.amp.
BPF IC
BU 5V AVR
Audio +B AVR
Illumination +B AVR
Servo +B AVR
BU detection SW
Panel 5V SW
Guide or Eject illumination SW
Changer mute SW
Buzzer SW
Audio mute SW(L Ch)
Audio mute SW(R Ch)
Changer reset SW
SW 14V
BU detection inverter
SW 5V
Audio mute driver
AGC
Changer control SW
LED +B SW
KDC-D301
Operation/Condition/Compatibility
When Q1's base goes "Hi", Dimmer LEDs are turned
on.
Operation/Condition/Compatibility
When BU 5V voltage is less than 3.0V, IC outputs
"Lo".
While BACKUP is applied, AVR outputs +5V.
Q1 and Q2 are inverted Darlington connection.
While Q3's base goes "Hi", AVR outputs +8.0V.
While Q5's base goes "Hi", AVR outputs +10.5V.
While Q7's base goes "Hi", AVR outputs +8.0V.
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.
When a base goes "Lo" during panel closed, Q10 is
turned on.
When a base goes "Hi", Guide or Eject illumination
LED is lighting-up.
When CHANGER MUTE REQUEST to H/U is worked,
a base goes "Lo" and Q12 is turned on.
When a base goes "Hi", Buzzer is turned on.
When a base goes "Hi", Audio mute is activated.
When a base goes "Hi", Audio mute is activated.
When CHANGER RESET from H/U is worked, a base
goes "Hi" and Q19 is turned on.
Audio +8V AVR, Illumination +B AVR, Servo +B AVR
on/off control
When a base goes "Hi", Q17 is turned on, and Each
AVR are working.
CD MECHA. SW, BPF IC on/off control
When a base goes "Lo", Q19 is turned on, and Each
circuits are working.
When a base goes "Hi", Audio mute driver outputs
"Hi".
Signal level control
When CHANGER CONTROL from H/U goes "Hi",
Q15 is turned on.
When Q23's base goes "Hi", BU 5V is supplied to the
Switch Unit.
3
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