Kenwood KD-C519FM Service Manual page 5

QQ
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Ref. No. Component Name
Q30 DTC114YUA
Q31 DTC124EUA
● RF MODULATOR UNIT
Ref. No. Component Name
IC1 UPC7805AHF
IC2 LC72329-9B24
IC4 NJM78L05UA
IC101 NJM2060M
IC102 NJM4565MD
IC301 BA1405F
IC302 NJM4565MD
Q1 DTC124EK
Q2 2SA1782(T,U)
Q3 DTC124EK
Q4 DTC143TK
TE
L 13942296513
Q5 DTC143TK
Q6 DTA124EK
Q8 DTC143TK
Q9 2SC4640(T,U)
Q101 2SK2158
Q201 2SK2158
Q303 2SA1162(GR)
Q304 2SK2158
Q305 2SK2158
Q306 2SK508L
Q307 2SC2714(Y)
Q308 2SK2158
Q309 2SK2158
Q310 2SK2158
● DISPLAY UNIT
Ref. No. Component Name
IC1 LC75852W
www
IC2 PNA4602M
Q1 DTC144EK
Q2 DTB123YK
.
Q3 DTA144EK
Q4 DTC144EK
Q5 DTA144EK
COMPONENT DESCRIPTION
Application/Function
When an eccentric disc is detected, Q30 is turned on, and a preceding beam is
Eccentric disc SW
made to be delayed.
While spindle servo or disc loading/eject mode is selected, a base goes "Hi", and
VIN SW
Q31 is turned on.
Application/Function
BU 5V AVR While BACKUP is applied, AVR outputs +5V.
System MI-COM. System control.
5V AVR Power supply for FM modulator and RF amplifier.
Isolation amp.
Low pass filter
FM ST modulator
1/2 VCC driver,
ALC detection amp.
ACC detection When Q4 is turned on, Q1 is turned on during ACC applied.
POWER SW When Q3's base goes "Hi", Q2 is turned on, and RF modulator circuit is working.
When RESET SW on display unit is pressed, Q4, Q1 and Q6 are turned off, and
Reset SW
IC2 is holding.
When RESET SW on display unit is pressed, Q5 is turned off, and SYSTEM
CH RESET SW
RESET signal is outputted to CD changer.
When RESET SW on display unit is pressed or ACC is OFF, Q6 is turned off, and
Hold detection SW
IC2 is holding.
FM modulator output / Vehicles antenna input switching.
Relay driver
When a base goes "Hi", FM modulator output is selected.
Ripple filter Power supply for RF amplifier
ALC control SW
Pilot mix amp.
Level control SW Level 1/2 : OFF, Level 3/4 : ON
Level control SW Level 2/4 : OFF, Level 1/3 : ON
RF oscillator buffer
RF amp.
Mode (1/2) SW Mode 1 : ON, Mode 2 : OFF
Audio mute POWER ON mode : OFF, POWER OFF mode : ON
Mode (1/2) SW Mode 1 : OFF, Mode 2 : ON
Application/Function
LCD driver with key-matrix
Remote control light senser
x ao u163
y
LED ON/OFF SW When Q1's base goes "Hi", Q2 is turned on, and LED is turned on.
i
Key-matrix permition SW Ready on key-matrix
When Q4's base goes "Hi", Q5 is turned on, and 5V is supplied to remote control
IC2 ON/OFF SW
sensor.
2 9
8
Operation/Condition/Compatibility
Operation/Condition/Compatibility
Q Q
3 6 7 1 3 1 5
Operation/Condition/Compatibility
co
.
KDC-C519FM/C719/Y
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9
5