Block Diagram - LG LCS500UN Service Manual

BLOCK DIAGRAM

TUNER-On-Board NXP Tiger-RDS(IC101)
PLL TUNING
AM TUNER
SYSTEM
FM TUNER RDS
DEMODULATOR
PLL TUNING
SYSTEM
SDA SCL
I 2 C BUS LOGIC
+
+
F F F
LOUDNESS
BD3702FV
3 Band P-EQ(Tone control)
VOLUME1/MUTE
INPUT GAIN
Input selector (3 single-end and 2 stereo ISO)
(A1,A2) (B1,B2) (C1,C2) (DP1,DN,DP2)
TUNER L/R
BLUETOOTH L/R
BT ANTENA
BT MODULE
LBMX-2CC9B
LEFT
RIGHT
BLUETOOTH MODULE (MCS LOGICS)
LINE-OUT
BLOCK
LINE_OUT : 2V
FL FR RL/SW RR/SW
RL/RR : LINE_OUT
SUBWOOFER OPTION
FL FR RL RR
POWER SUPPLY
I2C BUS
FL
FR
SIGNAL
STEREO DECODER
IMPROVEMENT
HIGH CUT
RL
CONTROL
SOFT MUTE
BANDWIDTH
NOISE BLANKER RR
CONTROL
SWL SWR
CD CD
AUDIO 8.4V
PICK UP
DSP
GND
LD LD
Tamul
MD
R
T-
F-
F+
T+
PDGND
E
E
A A
D
D
C C B
B
B F
F
F
VC
VCC
L_MTR L_CTL MUTE
AM5810FM
SL+
SL-
F F SP+
LO-
LO+
LPF
+
AGND
POWER VCC
AUDIO 8.4V
LEVEL METER I2C
ATT
19.2M
(EP1,EN1,EN2,EP2) (MIX)
32.768K
AUX L/R
CD L/R
VDD_3.3V
VDD_5V_1
EEPROM
BT 5V
Vnon-inv2
-Vcc
4 Vnon-inv1 5
DETACH S/W
RESET_SW
3 6
Vinv2
4 2
FRONT_DETECT
Vo2
2 Vinv1 7
3 1
Vo1
1 +Vcc 8
S4580
REMOTE IN
@refe
FRONT BLOCK
VOLUME UP/DN REMOTE IC
4 5
LCD DRIVER IC
E D
VOLUME COGtype(Flip-D)_100P
MC5502(Detach)_64P
A COM B
1 2 3
1/3 BIAS 1/4 DUTY
USB
JACK
AUX_IN
2.2K
2.2K
2.2K
2.2K
BACKUP_ON_14.4V
AGND
USB
87F14C8A
SDRAM
DVDD
DVDD USB 11P CNT FFC
DVDD
SVDD
AVDD
CD MOTOR DRV 8V
B U F F E R
DO CE CL
UART_TX
USB SW_OUT
DO CE CL
#3
CD POWER 5V
B+ DETACT
VDD_5V_1
NEC UPD78F1165GF
30,47,50,99,100 PIN(40mA)
MICOM STAND BY 5V
Serial Interface
RAM
AD CONVERTER VDD_5V
FLASH EEPROM
RESET
S7133SF
TIMER
SYSTEM CONTROL
16Bit/8Bit/Watch
RESET VDD
FLMD0 VSS
59:B+ DETACT
REGC EVDD
Operation Voltage
1.8V to 5.5V
I/O PORT PWR_5V
CLOCK
Total:71 MAIN CLOCK: 8MHz
CMOS Output:1
78K0 CPU WDT CLOCK: 240KHz
N-ch O.D I/O:4
SUB CLOCK : 32.768KHz
CMOS I/O:66
AUDIO 8.4V
PWR_5V
PWR_5V
LCD 8.4V
SWITCH1 SWITCH2
SEG CONTROLL
LCD
2-31 2-32
TELMUTE_3.3V
TEL_MUTE
ACC_IN
USB
@refe
KIA278R05
AGND
USB_5V
USB_ON
B1366
BT 3.3V
AGND
VDD_5.6V
VDD_5V
KTA1504 @refe
Bluetooth 5V
C105S
POWER_ON
FREG_B FREG_F
KTA1504 @refe SENSE OVER
PWR_5V
VOLT
TSD BIAS
ACC_OUT
BT 5V Vref
VDD_5.6V 200mA MAX 14
DSP 3.3V
250mA MAX
7
CD OUTPUT
8.0V 1300mA MAX
6
AUDIO
8.4V/500mA MAX
10
DIM_IN
DIMMER_IN
TEL MUTE
USB 5V
2SA1797
BACK UP 14.4V
C105S
C
B
E
AGND
BACK UP 14.4V
BACK UP 14.4V
MULTI Regulator
CTL1
POWER_ON
CTL1
6,10
CDP_PWR_ON_8V
CTL2 PANT
12
DIMMER
CTL3
4
POWER_ON
CTL4 ACC_OUT(B/T)
CTL2
A.ANT
600mA MAX
12
CTL3
LCD B_Lighting/LED
8.4V 500mA MAX
4
Back up Voltage
2
CTL4