LG 50PT85-ZB (CHASSIS:PD74A) Service Manual ▷ View online
- 25 -
BLOCK DIAGRAM
IDTV DVR Block
IDTV DVR Block
Comp
(DVD/DTV)
Rx0/1,Tx0/1
SCL/SDA
H/V(RGB)
SCL/SDA
Rx0/1/2/C
±
ST3232C
24LC02
24LC02
CXA2069Q
A/V Switch
A/D
Universal
Tuner
TU_Main
STHDMI002
HDMI MUX
RGB_PC/DTV
Cortez Plus
- Main CH. Decoding
- 3D Comb
- 3D De-
int
.
- Scaling & FRC
- GUI
- Audio Delay
- CPU
/
8
I
2
C
IR_in
RS232_Rx/Tx
Side-AV B
’D
AV
S-AV
YCin3
Flash(4MB)
PC_Audio
SIF
AVin3
LRCK/MC
K
SCK/SDA
L_SPK_out
R_SPK_out
I
2
S
Component In
Scart_RGB / FB
Main V or YC
LVDS_31P
/
Tx0/1/2/3/C
±
Disp_En
SCL/SDA
V_out1
Y_in1
Sub V or YC ,
DVR V or YC
I
2
C
I
2
C
For DDC_RGB
For DDC_DVI
I
2
C
RGB
(PC/DTV)
HDMI 2
(PC/DTV)
RS232
Scart1
Scart2
RF
PC_Audio
MNT_out (CVBS/L/R)
AVin1 (CVBS/L/R/Scart_ID)
TVL/R out
TC74LCX
RS232_ST
DVR LR
DVR
Scart
RGB
DTV 656
TV
Vout
TV
Vout
DTV_out
(CVBS/L/R)
TC74LCX157
LRCK/MC
K
SCK/SDA
I
2
S
DTV I2S
HDMI I2S
TC74LCX157
SPDIF out
ST SPDIF
MSP SPDIF
DDRRAM (256MB)
DTV_out
(CVBS/L/R)
MSP4450K
Audio SW &
Tone Control
AV_LR
PC_Audio
Comp_LRin
TV_L/Rout
SIF
STA333W
TV_L/Rout
AV_LR
uPD64015
Video
Decoder
24.576M
HY57V161610ET
SDRAM(
2MB
)
uPD61151
MPEG
Encoder
656 Comp
CS5331
I2S
IN
MCLK
16bit
32bit
HY57V641620ET
SDRAM(
8MB * 2
)
HY57V641620ET
STm5100
TP Dec.
Mpeg Decoder
Audio Dec.
74LCX541
Addr
/Data Buffer
For Hot
Plugg
-in
CI SLOT
Tuner TS1
CI TS
74LCX541
74LCX157
74LCX373 74LCX373
74LCX245
74LCX541
MUX
Logics for CI
74LCX32
74LCX08
74LVC14
PCMCIA
Power Switch
?
TPS2011
74LCX541 74LCX541
A/D
Univesal
Tuner
TDFC-G106P
27MHz
VCXO
HY5DU121622-D43
DDR SDRAM(64MB
)
S29JL064H70TFI010
Flash(8MB)
LMI BUS
16bit
FMI BUS
16bit
FMI BUS
16bit
STm5100
FMI BUS
16bit
STm5100
ATA To SATA
Converter
HDD
FMI BUS
16bit
STm5100
RS232_Cortez
DTV_out
(CVBS/L/R)
DTV 656
DTV I2S
24C256
I2C_0
32.768KHz
27MHz
74LVC14
DTV Reset
From CORTEZ
RS232_ST
ST-Connect (20pin)
Tuner TS
8
Mpenc_TS
TS0
I
2
C
TS1
SYS RST
I
2
C
DVR Option
$54.5
$0.5
$2.1
$2
Digital only
Tuner
TDFG-G105P
74LCX541 74LCX541
74LCX157
MUX
Tuner TS0
- 26 -
EXPLODED VIEW
590
901
900
121
570
310
560
120
601
602
603
501
520
550
301
300
302
303
600
304
305
306
400
A21
A2
502
202
203
240
204
205
206
250
208
580
207
201
200
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