LG M2794D Service Manual

Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
- 24 -
BLOCK DIAGRAM
AV(V, L/R)
S-Video
CABLEAIR
ATSC/NTSC Tuner
(TDVF-H051F)
LG Innotek
M-STAR
(LGE1854C)
VSB
Receiver
(LGDT3304)
Audio AMP
(NTP3000A)
HY5DU561622
256M(DDR)
HY5DU561622
256M(DDR)
HY5DU561622
256M(DDR)
HY5DU561622
256M(DDR)
CLK_25MHz
IF-P IF-N
LVDS(8Bit)
CLK_12MHz
CVBS(ATV)
TP DATA[0-7]
SIF
2
Component
(YPbPr/LR)
R OUT
L OUT
HP_L/R_Out
PC Audio_In
RGB(PC)
PC IN
L
C D
1.0Vp-p
96dBuV
5V
SIFM0 SIFP0
Buffer
1.2V 3.3V
[3]
[16] [15]
[N:11] [P:10]
2
IF_AGC
MSCL MSDA
2
3.3V1.2V
15V_AMP
EEPROM
EEPROM(512K)
24C512
EEPROM(512K)
24C512
3.3V
Flash(8M)
Flash(8M)
3.3V
KEY_CTL[1,2]
5V
P
O
W
E
R
P
O
W
E
R
15V 5V_ST INV_ON PWM_DIM A_DIM
[12]
SDA[7]
SCL[8]
TUNER_CVBS
VCOM0
HDMI1(VIDEO)
USB(SW Upgrade)
HPDCTRL[12]
DDCDA_SDA[14] DDCDA_SCL[15]
POWER_HDMI[110]
3.3V AVDD_DVI
2.6V VDD_DDR
27”
TMDS351
DVI/HDMI
SW
DVI(PC)
HDMI2(VIDEO)
EEPROM
EEPROM
EEPROM
TX_Clock, Data
K
E Y
K
E Y
H
P
/
L
E
D
/ I
R
H
P
/
L
E
D
/ I
R
HP_DET
KEY_1,2
R
L
HP_L_OUT
HP_R_OUT LED_BLUE
LED_AMBER
IR
5V
TPA6110
HEADPHONE
AMP
HP_RHP_L
Data LRCLK SCLK MSDA/MSCL
3W 3W
Memory CLK 210Mhz
TMDS CLK
- 138.5Mhz
LVDS CLK
-138.5MHz

LG M2794D Specifications

General

Pixel pitch	0.313 x 0.313 mm
Aspect ratio	16:9
Display diagonal	27 \
Vertical scan range	56 - 75 Hz
Horizontal scan range	30 - 83 kHz
Contrast ratio (dynamic)	20000:1
Contrast ratio (typical)	1000:1
Viewing angle, horizontal	170 °
Display brightness (typical)	400 cd/m²
Audio system	SRS Surround XT, Dolby
Power requirements	90 – 264 Vac, 47 – 63 Hz
TV tuner integrated	Yes
Component video (YPbPr/YCbCr) in	3
Certification	TÜV-Typ, CE, EPA Energy Star, UL, CSA, SEMKO, FCC-B
Product color	Black
Market positioning	-
Compliance industry standards	DDC 2B
LED indicators	Stand-by
Power consumption (standby)	1 W
Power consumption (typical)	100 W
Sustainability certificates	ENERGY STAR

Weight and Dimensions

Depth (with stand)	210 mm
Width (with stand)	654 mm
Height (with stand)	496 mm
Weight (with stand)	8920 g