Component Description - Kenwood KDC-116S Service Manual

QQ
3 7 63 1515 0
SWITCH UNIT(X13-9880-14)
Ref.No. Component Name
IC1 LC75853NE
Q1 DTA114EK or KRA102S or
UN2111
ELECTRIC UNIT(X25-8700-XX)
Ref.No. Component Name
IC1 UPD780058GC233
IC2 TDA7407D
IC4 TDA7386
IC7 BA4911-V4
IC8 HD74HC27FP
IC11 S-80830ANNP
IC12 BR24C01AF or BR24C01AF-W
M24C01-WMN6T or S-24C01B
Q10 2SC4081 or 2SD1819A
Q20 2SC4081 or 2SD1819A
Q40 DTA124EUA or UN5112
Q50 2SA1036K
Q51 UMC2N
Q53 UMC2N
TE
L 13942296513
Q55 2SD2375 or 2SD2396
Q70 2SC4081 or 2SD1819A
Q223,224 DTC143TUA or UN5216
Q251 DTC114YUA or UN5214
www
.

COMPONENT DESCRIPTION

Application/Function
LCD driver
key-matrix permission SW
Application/Function
System µ-COM.
E-VOL. & N.C. MPX
Power IC
Power supply IC
Mute gate IC
RESET IC
E2PROM
B.U. detection
ACC detection
PREOUT mute driver
SW 5V
SW 14V
Switch for power supply IC
AVR for SERBO +B
SURGE detection
PREOUT MUTE
Power IC SVR SW
x ao u163
y
i
KDC-116S/1018
2 9
8
Operation/Condition/Compatibility
Ready on key-matrix
Ready on key-matrix, ON when the base goes "Lo"
Operation/Condition/Compatibility
3 input NOR gate x3
Detection voltage 3.0V
Detect BU voltage
Detect ACC voltage
Mutes when base is "Lo" (controls Q221-224)
ON when the base is "Lo".
ON when the base is "Hi" (controls Q55)
ON when the base is "Hi" (controls SW1 pin of power
supply IC)
Q Q
3 6 7 1 3 1 5
Output issued when SW14V is on (base is "Hi")
Detect SURGE voltage
Mute applied to PREOUT (output) when base is "Lo"
Turns ON when base is "Hi" and capacitor on SVR
pin discharges
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9
3