LG 32LD310H / 32LD320H (CHASSIS:LA06A) Service Manual ▷ View online
Audio out Trouble shooting guide
Check the output of Mstar(IC101).
Measure waveform at R503, R504, R505.
because it’s more easy to check. Can you see the normal signal?
Measure waveform at R503, R504, R505.
because it’s more easy to check. Can you see the normal signal?
Check the input (Pin 17,18,19) of NTP7100(IC501).
Can you see the normal waveform?
Can you see the normal waveform?
YES
NO
NO
This board has big problem because Main chip (MStar) have some troubles.
After checking thoroughly all path once again,
You should decide to replace Mstar or not.
After checking thoroughly all path once again,
You should decide to replace Mstar or not.
After checking audio signal line, you should decide to replace item or not.
YES
Check the output (Pin 30,31,36,37,47,48,53,54) of NTP7100((IC501).
Can you see the normal waveform?
Can you see the normal waveform?
NO
YES
After checking the Power & I2C & Reset of this chip,
you should decide to replace this or not.
you should decide to replace this or not.
Check the speaker output wafer P501.
Can you see the normal waveform?
Can you see the normal waveform?
NO
YES
After checking audio signal line, you should decide to replace item or not.
Check the connector & Speaker
LG Electronics/ BS Division
Commercial Display H/W Gr.
Commercial Display H/W Gr.
xxLD320H-UA Block Diagram
< Contents >
Video Signal Block
Video Signal Block
Audio Signal Block
Audio Signal Block
Flash Block & Reset
Flash Block & Reset
I2C Block
I2C Block
POWER Block
POWER Block
Overall Block Diagram
Overall Block Diagram
M+S Output Block(37”/42”)
M+S Output Block(37”/42”)
RGB PC
HDMI 1
Side AV2
CVBS, L/R
DDR2 (1 G bit)
H5TQ1G63BFR-H9C
IC1201
NAND Flash(2 G bit)
HY27UF082G2B-TPCB
IC102
USB
Digital AMP
NTP7000
IC501
I2S
RGB/H/V
A_Data[0:15],
DDR2 (1 G bit)
H5TQ1G63BFR-H9C
IC1202
B_Data[0:15],
Addr.[ ], ctrl, DQS, DM …
MAX3232
PCM_A [0 … 7]
IF N/P
SIF
TU_CVBS
X-tal
Reset / IF_AGC …
SDA/SCL_5V
Reset Switch
AV1
Component 1
Y Pb Pr, L/R
CVBS, L/R
CS ,RE,WE……
Audio L/R
PC Audio
HDMI 2
DP/DM/ +5V
RX/TX
RX/TX
Micom
(MSP430F5419IPZR)
IC1602
24MHz
JACK PACK
JACK PACK
at REAR
at REAR
SCL, SDA_3.3V
RF
S7(LGE105DB-LF-1)
IC101
RS-232C
(SVC)
S/W Reset
TDVJ
- S001D
EXT_OUT
LCD Module
(FHD,M+S, 60Hz)
Mini LVDS
I2C(SCL/SDA)
S_FLASH (8M bit)
MX25L8005M2I-15G
IC200
Power AMP
TPA6011A4PWPRG4
IC1100
JK1100
JK6000
RJP_CTRL
JK501
P-Gamma
Power Shift
Power Control
Pro:Idom
LGDT1129
IC1209
TS_CLK,VALID,SYNC,0~7
PM_TS_CLK,VALID,SYNC,0~7
P1103
JK1102
TMMB
-H001P
B-LAN
JK6001
JACK PACK
JACK PACK
at Side
at Side
JK1401
Overall Block Diagram
Overall Block Diagram
S7(LGE105DB-LF-1)
Video Signal Block
Video Signal Block
IP/IM
RIN0P/M
GIN0P/M
BIN0P/M
GIN1P/M
RIN1P/M
BIN1P/M
CVBS2P
CVBS3P
IFAGC
SIFP
CVBS0P
HSYNC0
VSYNC0
DSUB_R
DSUB_G
DSUB_B
DSUB_HSYNC
DSUB_VSYNC
COMP1_Y
COMP1_Pr
COMP1_Pb
AV_CVBS_IN
SIDEAV_CVBS_IN
A_RXCP/N
A_RX0P/N
A_RX1P/N
A_RX2P/N
D2+/-_HDMI1
D1+/-_HDMI1
D0+/-_HDMI1
CK+/-_HDMI1
IF_AGC_MAIN
TU_SIF
TU_CVBS
IF_N/P_MSTAR
RF
TDVJ
- S001D
TMMB
-H001P
B_RXCP/N
B_RX0P/N
B_RX1P/N
B_RX2P/N
D2+/-_HDMI2
D1+/-_HDMI2
D0+/-_ HDMI2
CK+/-_HDMI2
Click on the first or last page to see other 32LD310H / 32LD320H (CHASSIS:LA06A) service manuals if exist.