LG 50PX950-SA (CHASSIS:PB01B) Service Manual ▷ View online
Customer Oriented R&D
Flash
(512MB)
DDR2(512MB
)
DDR2(512MB
)
UPD78F
0513GA
(Micom)
TAS5707
(Digital
AMP)
RGB-PC
Audio In
SPDIF Out
TDA9996
(4x1,S/W)
RGB-PC
COMP1
COMP2
AV1
Side AV
CVBS
Y/Cb/Cr
R/G/B
CVBS
RS232
Video
Front
End
Dual
HDMI
Rx
HD/SD
Video
Encoder
Audio
DSP
BCM3556
PIP
Local KEY,
EYE
24C16
X-tal(54M)
Reset
KIA7029
NVRAM
I2C
SIF
COMP 1 L/R
COMP 2 L/R
XPT
I2S
MCLK
MPEG_TS
RX/TX
Main_IF
USB
TMDS0_RX+-
Audio
Front
End
Y/Cb/Cr
LAN
PHY
74F08D
CVBS/Y/C
H/V Sync
TU_CVBS
L/R
L/R
L/R
RS-232C
Dead IC when Standby
Alive IC when
Standby
Video
Audio
L/R OUT
L/R
CVBS waveform
HUB
(PK950)
PK550
BT Module
PK_PX950
Demodulator
MN884433
TU_CVBS
Cab
le
ISDB-T/
PAL/NTSC
MPEG_TS
Block Diagram – Main B/D
(PDP 3DTV)
LVDS (51Pin)
IR Emitter
3D_SYNC
LR_DETECT
FPGA_RESET
5V_VCC
<추가 Connection>
3D 입력 Format
HDMI_3D처리
Customer Oriented R&D
Breakthrough
Block Diagram
DDR2
512MB(128*4)
DDR2
512MB(128*4)
BCM3556
(400M MIPS)
BCM3556
(400M MIPS)
1080P
LVDS
(Front-end)
(External Input)
EXT_IN
HDMI0_BCM
CVBS_LIVE
TP1
CVBS_LIVE
SIF1
SIF1
Cab
le
ISDB-T/
PAL/NTSC
(System + DVR + Scalar)
IF
I2S_BCM
TAS9709
TAS9709
AV1
AV1_LR
COMP1_LR
COMP2_LR
RGB_LR EXT_IN
HDMI0_BCM
AV2
AV2_LR
NANDFlash
512MB
NANDFlash
512MB
(Audio Out)
USB2.0
SPDIF
SIF_LIVE
I2S_BCM
TDA9996
TDA9996
(Comp1/2, RGB)
HDMI_D
HDMI_A
HDMI_B
SIDE HDMI_PORT
UI_HW_PORT1
UI_HW_PORT2
LAN
HUB
(PX950)
PK550
BT Module
PK950
(USB)
Demodulator
MN884433
TP1
HDMI_C
UI_HW_PORT3
LAN
(LAN)
HDMI
(Wireless)
Wireless
RX Box
PHY
PHY
Customer Oriented R&D
Breakthrough
KIA7029AF
(Reset)
Active Low
BCM3556
(Main)
Reset Design
Micom
TAS9709
(AMP)
USB HUB
B/T
TUNER
GPIO Reset
GPIO Reset
GPIO Reset
AMP_RESET
Demodulator
GPIO Reset
Customer Oriented R&D
Breakthrough
¾
BCM3556 (Main Chip)
There are no power sequence requirements. Any sequence will be acceptable
All supplies have a minimum ramp up time of 100us. There is no maximum ramp up time restriction
RESET should be held active during ramp up and at least 10ms after all voltages are above 95% of their
specified nominal levels
Power-Up Sequence
either 1.2V, 1.8V, 2.5V, 3.3V
either 1.2V, 1.8V, 2.5V, 3.3V
Reset Input
Min 100us
Min 10ms
1.2V rail at 1.14V
1.8V rail at 1.71V
2.5V rail at 2.375V
3.3V rail at 3.135V
1.8V rail at 1.71V
2.5V rail at 2.375V
3.3V rail at 3.135V
95%
All power rails above
minimum operating voltage
minimum operating voltage
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