DOWNLOAD LG 50PB4DHA-UA / CHASIS / PA75C Service Manual ↓ Size: 10.14 MB | Pages: 25 in PDF or view online for FREE

Model
50PB4DHA-UA CHASIS PA75C
Pages
25
Size
10.14 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pb4dha-ua-chasis-pa75c.pdf
Date

LG 50PB4DHA-UA / CHASIS / PA75C Service Manual ▷ View online

- 9 -
6-4. Automatic Adjustment
(1) Execute POWER ON(
Â
) of the adjustment R/C to execute
automatic adjustment. 
(2) Set the Baud Rate to 115200.
(3) Always start adjustment with “wb 00 00” and end
adjustment with “wb 00 ff” 
(4) Adjust the offset if necessary
6-5. Manual Adjustment
(1) Required Test Equipment: CA-210
=> To adjust color temperature of PDP, CS-1000 is the
Color Analyzer(CA-210) and should be set to use CH 9
in which white, red, green, and blue color are corrected.
Conduct the adjustment according to the coordinates for
White Balance adjustment in the table below.
(2) Enter the ‘Ez - Adjust’ by pressing the ADJ on the Service
R/C.
(3) Select 10.TEST PATTERN using the CH + / - KEY and
press the Enter KEY to execute a heat run for more than
30 minutes. 
(4) Execute a Zero Calibration for CA-210 and put it at
distance of less than 10Cm from the PDP module surface
center during the adjustment. 
(5) Select ‘7. White-Balance’ of ‘Ez - Adjust’ by pressing the
ADJ KEY on the Service R/C. Then enter adjustment mode
by pressing the Right KEY (
G
) .
(The internal pattern of full white appears by pressing 
G
)
(6) The adjustment is conducted in three levels of color
temperature; COOL, MEDIUM, and WARM.
When the white balance is Cool,
Fix B Gain 192, fix R-Cut / G-Cut / B-Cut 64, 
and use R Gain / G Gain to adjust the High Light. 
When the white balance is Medium,
Fix R Gain 192, fix R-Cut / G-Cut / B-Cut 64, 
and use G Gain / B Gain to adjust the High Light. 
When the white balance is Warm,
Fix R Gain 192, fix R-Cut / G-Cut / B-Cut 64, 
and use G Gain / B Gain to adjust High Light.
(7) Use the Vol. +, - key for adjustment.
(8) When the adjustment is completed, press the ENTER (
Á
KEY) button to move to the Ez –Adjust screen. Press the
ADJ KEY to exit the adjustment mode.
Full White 216gray
[Cool]
X; 0.276±0.002   Y; 0.283±0.002
Color temperature: 11000°K
9
uv: 0.000
[Medium]
X; 0.285±0.002   Y; 0.293±0.002
Color temperature: 9300°K
9
uv: 0.000
[Warm]
X; 0.313±0.002   Y; 0.329±0.002
Color temperature: 6500°K
9
uv: 0.000
- 10 -
DIAGRAMA EN BLOQUE
Block Diagram - Overview
Audio L/R
Flash
(16MB)
DDR(64MB)
DDR(64MB)
74LVC14APW 
TEA6420
(Audio
SW)
MC33078
(AMP)
CS5340
(A/D)
MTV416
(M
icom
)
NTP3000
(Digital AMP)
X-tal(54M)
TMDS341A
(3x1,S/W)
74F08D
EEPROM
AT/NT
Tuner
64Bit I/F
Reset
CVBS
CVBS/Y/C
Y/
Cb
/Cr
R/G/B 
H/V Sync
RGB-PC
HDMI
0/1/2
COMP 1
COMP 2
AV 1
AV 2
RGB-PC
Audio L/R
I2S
MNT out
( L/R) 
SPDIF OUT
I2S
RS-232C
Dead IC when Standby
Option 
Alive IC when Standby
Video
Audio
Video
Front
End
Dual
HDMI
Rx
HD/SD
Video
Encoder
Audio
DSP
BCM3553
MCLK
MCLK
HDMI CEC
HDMI CEC 
(To Micom
)
To Micom
SDA
SCL
SIF
IF(AT)
Buffer 
Single LVDS
Connector
Digital out
(W)XGA
Local KEY
IR
Buffer
Buffer
24C16
AGC CTL (From BCM)
USB2.0
I2S Audio Input
VSB/QAM/NTSC/SIF
DDR(128MB)
DDR(128MB)
- 11 -
Signal path for CVBS, Component, RGB
Comp1_Y
H Sync
V Sync
BCM3553
Comp1_Pb
Comp1_Pr
74F08D
Component 1
Input
Component 2
Input
RGB Input
RGB H_Sync
Side AV
CVBS
Rear AV
Rear S_Video
Y/C
Side S_Video
Y/C
CVBS
CVBS 2
L1/C1
CVBS 3
L2/C2
ANT/ Cable
TUNER
IF_P
IF_N
IF_P from TUNER for DTV
IF_N from TUNER for DTV
CVBS 1
EEPROM
FOR EDID
DDC SDA
DDC SCL
RGB V_Sync
LVDS_Tx
Out
Only for HD
Component_1 S/W
Component_2 S/W
Rear_CVBS_ S/W
RGB S/W
GPIO[0:6]
Comp2_Y
Comp2_Pb
Comp2_Pr
RGB_G
RGB_B
RGB_R
DDC SCL to 
Micom
 
for Download
LPF 6 
Mhz
LPF 30Mhz
LPF 30Mhz
LPF 30Mhz
LPF 30Mhz
LPF 30Mhz
LPF 30Mhz
LPF 6 
Mhz
LPF 6 
Mhz
LPF 6 
Mhz
DDC SDA to 
Micom
 
for Download
DVO Out[0:29]
Rear_S-Video_ S/W
Side_CVBS_ S/W
Side_S-Video_ S/W
31p
LVDS
Con.
31p
LVDS
Con.
 
 
    
 
 
 
    
 
 
 
 
- 12 -
 Signal path for HDMI
BCM3553
TMDS0 RX0+/-
TMDS0 RX1+/-
TMDS0 RX2+/-
TMDS0 RXCLK+/-
DDC SDA0
DDC SCL0
EEPROM
For EDID
HDCP SDA
HDCP SCL
NDA
NCL
HDMI 0
HDMI 1
HDMi
 —
 CEC
+5V Power_0 
Hot Plug Detect_0 
TMDS1 RX0+/-
TMDS1 RX1+/-
TMDS1 RX2+/-
TMDS1 RXCLK+/-
DDC SDA1
DDC SCL1
EEPROM
For EDID
HDMi
 —
 CEC
+5V Power_1
Hot Plug Detect_1 
LVDS_Tx
Out
HDMI 2
TMDS2 RX0+/-
TMDS2 RX1+/-
TMDS2 RX2+/-
TMDS2 RXCLK+/-
DDC SDA2
DDC SCL2
EEPROM
For EDID
HDMi
 —
 CEC
+5V Power_2 
Hot Plug Detect_2 
TMDS341A
TMDS0
INPUT
DDC SDA
DDC SCL
TMDS1
INPUT
TMDS2
INPUT
TMDS RX0+/-
TMDS RX1+/-
TMDS RX2+/-
TMDS RXCLK+/-
Hot Plug Detect_0 
TMDS
Out
TMDS_Rx
Input
HDMi_Sel_0
HDMi_Sel_1
HDMi_Sel_2
Hot Plug Detect_1
Hot Plug Detect_2
+5V Power_0 
+5V Power_1 
+5V Power_2 
GPIO[0:8]
Switch
Selection
DDC
INPUT
MTV416
MTV416
Micom
HDMi
 —
 CEC
Parallel connections with 
HDMi
 0,1,2
Only for HD
31P
LVDS
Con.
31P
LVDS
Con.
DVO Out[0:29]
EEPROM 
for HDCP
EEPROM 
for HDCP
DDC SDA0
DDC SCL0
DDC SDA1
DDC SCL1
DDC SDA2
DDC SCL2
DDC
OUT
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