LG 787LE SM Schematic
787LE Service Manual
1. PRECAUTION AND NOTICES------------------------------------------------------------------------------------- 1
1.1. SAFETY PRECAUTIONS ----------------------------------------------------------------------------------------1
1.2. PRODUCT SAFETY NOTICE----------------------------------------------------------------------------------- 1
1.3. SERVICE NOTES-------------------------------------------------------------------------------------------------- 1
2. SERVICE TOOL & EQUIPMENT REQUIRED----------------------------------------------------------2
3. SPECIFICATIONS----------------------------------------------------------------------------------------------------- 2~3
PRODUCT SPECIFICATIONS
3.1.
FACTORY SUPPORTING MODES
3.2.
3.3. D-SUB CONNECTOR -------------------------------------------------------------------------------------------- 3
4. EXPLODED VIEW AND PARTS LIST --------------------------------------------------------------------------- 4~5
4.1. EXPLODED VIEW------------------------------------------------------------------------------------------------ 4
4.2. EXPLODED VIEW PARTS LIST-------------------------------------------------------------------------------- 5
5. BLOCK DIAGRAM---------------------------------------------------------------------------------------------------- 6
6. SCHEMATIC DIAGRAM -------------------------------------------------------------------------------------------- 7~13
6.1. ADE------------------------------------------------------------------------------------------------------------------ 7
6.2. POWER ------------------------------------------------------------------------------------------------------------- 8
6.3. INPUT INTERFACE ----------------------------------------------------------------------------------------------9
6.4. OUTPUT INTERFACE -------------------------------------------------------------------------------------------10
6.5. MICRO CONTROLLER ------------------------------------------------------------------------------------------ 11
6.6. POWER PCB ------------------------------------------------------------------------------------------------------- 12
6.7. INVERTER---------------------------------------------------------------------------------------------------------- 13
7. WORKING THEOREM----------------------------------------------------------------------------------------------- 14~19
8. WIRING DIAGRAM--------------------------------------------------------------------------------------------------- 20
9. PCB LAYOUT----------------------------------------------------------------------------------------------------------- 21~26
9.1. MAIN PCB TOP VIEW ------------------------------------------------------------------------------------------- 21
9.2. MAIN PCB BOTTOM VIEW------------------------------------------------------------------------------------- 22
9.3. CON PCB TOP VIEW --------------------------------------------------------------------------------------------23
9.4. CON PCB BOTTOM VIEW --------------------------------------------------------------------------------------24
9.5. POWER PCB TOP VIEW ----------------------------------------------------------------------------------------25
9.6. POWER PCB BOTTOM VIEW---------------------------------------------------------------------------------- 26
10. TROUBLE SHOOTING FLOW CHART ------------------------------------------------------------------------- 27~30
10.1. NO POWER -------------------------------------------------------------------------------------------------------- 27
10.2. MCU NO FUNCTION --------------------------------------------------------------------------------------------28
10.3. NO DISPLAY------------------------------------------------------------------------------------------------------- 29
10.4. LOSE COLOR------------------------------------------------------------------------------------------------------ 30
11. ADJUSTMENT----------------------------------------------------------------------------------------------------------31~32
11.1. ADJUSTMENT CONDITIONS AND PRECAUTIONS-------------------------------------------------------31
11.2. MAIN ADJUSTMENTS------------------------------------------------------------------------------------------- 31
11.3. ALIGNMENT PROCEDURES----------------------------------------------------------------------------------- 31
12. ELECTRICAL PARTS LIST ---------------------------------------------------------------------------------------- 33~41
TABLE OF CONTENTS
PAGE
------------------------------------------------------------------------------ 2
------------------------------------------------------------------------ 3
8/25/2003
787LE Service Manual
1. PRECAUTION AND NOTICES
1.1. SAFETY PRECAUTIONS
This monitor is manufactured and tested on a ground principle that a user's safety comes first.
However, improper use or installation may cause damage to the monitor as well as to the user.
Carefully go over the following WARNINGS before installing and keep this guide handy.
WARNINGS:
This monitor should be operated only at the correct power sources indicated on the label on
u
the rear end of the monitor. If you're unsure of the power supply in your residence, consult
your local dealer or power company.
Use only the special power adapter that comes with this monitor for power input.
u
Do not try to repair the monitor your self as it contains no user-serviceable parts. This
u
monitor should only be repaired by a qualified technician.
Do not remove the monitor cabinet. There is high-voltage parts inside that may cause
u
electric shock to human bodies, even when the power cord is unplugged.
Stop using the monitor if the cabinet is damaged. Have it checked by a service technacian.
u
Put your monitor only in a clean, dry environment. If it gets wet, unplug the power cable
u
immediately and consult your service technician.
Always unplug the monitor before cleaning it. Clean the cabinet with a clean, dry cloth.
u
Apply non-ammonia based cleaner onto the cloth, not directly onto the glass screen.
Keep the monitor away from magnetic objects, motors, TV sets, and transformer.
u
Do not place heavy objects on the monitor or power cord.
u
1.2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety visual inspections and
the protection afforded by them cannot necessarily be obtained by using replacement
components rated for higher voltages, wattage, etc. Before replacing any of these components
read the parts list in this manual carefully. The use of substitute replacement parts which do not
have the same safety characteristics as specified in the parts list may create shock, fire, or other
hazards.
1.3. SERVICE NOTES
1. When replacing parts or circuit boards, clamp the lead wires around terminals before
soldering.
2. When replacing a high wattage resistor (more than 1W of metal oxide film resistor) in
circuit board, keep the resistor about 5mm away from circuit board.
3. Keep wires away from high voltage, high temperature components and sharp edges.
4. Keep wires in their original position so as to reduce interference.
5. Usage of this product please refer to also user's manual.
-1-
8/25/2003
787LE Service Manual
2. SERVICE TOOL & EQUIPMENT REQUIRED
1. SIGNAL GEN.
2. MULTIMETER
3. OSCILLOSCOPE
4. SCREW DRIVER
5. IRON
6. ABSORBER
7. SOLDER
8. DUMMY LOAD (5ohm/200W)
3. SPECIFICATIONS
3.1. PRODUCT SPECIFICATIONS
LCD Panel 17.0" TFT
Power Management Energy Star compliant VESA
DPMS compatible
< 2W
Displayable Resolution SXGA 1280× 1024 (max.)
Pixel Dimension 0.264(H)× 0.264(V)mm
LCD Display Color 16.2M Color Max. (6bit+2FRC)
Viewing Angle CR≧10
Horizontal: -70°+70°
Vertical: -65°+65°
Tilt +90°, -5°
Contrast Ratio 400 : 1 (typ.)
Brightness 200 cd/ m2 (min.)
260 cd/m2 (typ.)
Response Time Tr: 9 ms Tf: 16ms
Active Display Area 339.5mm(H)× 272mm(V)
Temperature Operating: 0°C ~ +40°C
Storage: -20°C ~ +60°C
Compliance UL 1950, C-UL, EN60950, FCC-B, CE MARK,
TÜV/GS, TCO99, CB.
Power Input Voltage: 100~240 Vac
Consumption: 45 Watts (Max.)
-2-
8/25/2003
787LE Service Manual
3.2. FACTORY SUPPORTING MODES
There are totally 35 timings mode that can be saved in memory by FIFO architecture.
This monitor can support VGA up to SXGA resolution.
There are some resolution example listed in lookup timing table.
Lookup timing table: 1.VGA 720× 400 (70Hz) mode
2.VGA 640× 480 (60Hz) mode
3.VESA 640× 480 (72Hz) mode
4.VESA 640× 480 (75Hz) mode
5.VESA 800× 600 (56Hz) mode
6.VESA 800× 600 (60Hz) mode
7.VESA 800× 600 (72Hz) mode
8.VESA 800× 600 (75Hz) mode
9.VESA 1024× 768 (60Hz) mode
10.VESA 1024× 768 (70Hz) mode
11.VESA 1024× 768 (75Hz) mode
12.VESA 1280× 1024 (60Hz) mode
13.VESA 1280× 1024 (75Hz) mode
14.VESA 1152× 864 (75Hz) mode
15.MAC 640× 480 (67Hz) mode
16.MAC 832× 624 (74.5Hz) mode
17.MAC 1152× 870 (75Hz) mode
3.3. D-SUB CONNECTOR
D-SUB 15 PIN CONNECTOR
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
SIGNAL LEVEL
CONNECTOR SIGNAL DESCRIPTION
R RED 0.7vp-p(VIDEO)
G GREEN 0.7vp-p(VIDEO)
B BLUE 0.7vp-p(VIDEO)
H H/SYNC TTL positive or negative
V V/SYNC TTL positive or negative
SDA DDC1/2B TTL
SCL DDC1/2B TTL
1.R 6.GND 11.GND
2.G 7.GND 12.SDA
3.B 8.GND 13.H.SYNC
4.GND 9. +5V 14.V.SYNC
5.GND 10.GND 15.SCL
-3-
8/25/2003
FIG.1
4.1. Exploded View
787LE Service Manual
5B11
2C01
1F01
1F02
1F03
KEYPAD PCB ASS'Y
1F12
X2
1F04
V901
X2
FIG.4
1F04
1F23
X2
1F29
MAIN PCB ASS'Y
X4
1F14
TO: MAIN PCB
P104
1F28
1F18
1F25
1F26
X2
1F29
1F25
X2
2C02
1F30
5B10 X2
5B15
X4
5B14
FIG.3
5B16
5B01
5B12
X4
FIG.4
1F05
1F08
FIG.2
1F15
FIG.3
5B02
5B07
5B08
1F24
X2
1F19
P983
5B03
5B08
5B05
1F17
X2
5B06
X2
X2
1F07
5B04
1F10
5B10
X3
X2
P961
5B09
X2
1F17
NOTE.1
2C05
X4
2C03
2C04
1F20
1F20
2C06
FIG.2
9R01
X2
POWER PCB ASS'Y
P951
9S01
X2
5B13
9S03
X4
9H02
9S02
9H03
-4-
8/25/2003
787LE Service Manual
4.2. EXPLODED VIEW PARTS LIST
Ref. No. Source Part No. DESCRIPTION SPECIFICATION Q‘TY REMARK
1F01 2024262953 FRONT BEZEL LG ABS+PC PS-7604B MT11010 1
1F02 2053753001 LED INDIC.-PWR JT178L/LEP PMMA 94HB 1
1F03 2044262202 FUNCTION KEY JT178L ABS 94V0 PS-7604B 1
1F04 2082730062 SCREW,BND+ M3X6(BND+) 4
1F05 2071966800 METAL FITTG JT178L/SECC 0.8MM PANEL-178K77 1
1F07 2071966200 METAL FITTG JT178K77 SECC T=1.0MM(I/0) 1
1F08 2072454600 INSULATOR MYLAR(168*168T=0.5)MM(94V0) 1
1F10 2084740102 SCREW,BND T+ M4X10(BND T+) 3
1F12 2084730082 SCREW,BND T+ M3X8(BND T+) 2
1F14 2082630062 SCREW M3X6 P=0.5 4
1F15 2082630062 SCREW M3X6 P=0.5 1
1F17 2082630062 SCREW M3X6 P=0.5 4
1F18 2071666100 SHIELD PLATE JT178K77 SPTE T=0.3MM(MAIN) 1
1F19 2071667500 SHIELD PLATE JT178L/SPTE T:0.3MM(INVERTER) 1
1F20 2082630062 SCREW M3X6 P=0.5 2
1F23 2081430082 SCREW,(WASH) M3X8 P=0.5(TOOTH,WASHER) 1
1F24 2085740062 SCREW,B OTW+ B,OTW+,M4x6 1
1F25 2087340086 SCREW,B SPW+ M4X8 B SPW+ ö3.96 NYLON 4
1F26 2082740082 SCREW,BND+ M4X8(BND+) 1
1F28 2084740102 SCREW,BND T+ M4X10(BND T+) 1
1F29 2082630064 SCREW M3X6 P=0.6 BLACK 2
1F30 2082630064 SCREW M3X6 P=0.6 BLACK 1
2C01 2022259707 CABI BACK 787LE/ABS+PC BACK C LG LOGO 1
2C02 2027257503 DUST COVER JT178L/ABS+PC BLACK C 1
2C03 2071863900 BRACKET,FIX JT178L/SECC 1.0T KEWSINGTON 1
2C04 2072457100 INSULATOR PC BLACK 94V0 T=0.5 1
2C05 2072455300 INSULATOR SILICON RUBBER ö6.5Xö9.0 4
2C06 2071958300 METAL FITTG VE170 KENSINGTON 1
5B01 2028255202 STAND JT178L ABS 94HB BLACK C 1
5B02 2027255802 DUST COVER JT178L ABS 94HB BLACK C 1
5B03 2071962700 METAL FITTG JT178L SECC 1.5T HINGE(UP) 1
5B04 2106655100 HINGE JT178L(L) 0~90' 1
5B05 2106655200 HINGE JT178L(R) 0~90' 1
5B06 2084740082 SCREW,BND T+ M4X8(BND T+) 2
5B07 2071962800 METAL FITTG JT178L SECC 1.5T H1NGE (DOWN) 1
5B08 2084740082 SCREW,BND T+ M4X8(BND T+) 4
5B09 2027255902 DUST COVER JT178L/ABS 94HB BLACK C 1
5B10 2085740122 SCREW,B OTW+ SCREW B OTW+ M4X12 4
5B11 2084740102 SCREW,BND T+ M4X10(BND T+) 1
5B12 2071966700 METAL FITTG JT178L SECC 1.5T (STAND) 1
5B13 2084740082 SCREW,BND T+ M4X8(BND T+) 4
5B14 2082740122 SCREW,BND+ M4X12 (BND+) 4
5B15 2039802303 FOOT PAD VA520 CR420xö16.5x5.8 BLACK 4
5B16 2082630062 SCREW M3X6 P=0.5 1
9H02 2072259700 HEAT SINK JT178K77 44WX27LX20H 1
9H03 2072259600 HEAT SINK JT178K77 45WX20LX20H 1
9R01 2063252000 SPACER SUPPORT NYLON 66 94V2 15.87*06.6*42.5 2
9S01 2083730102 SCREW,BND T+ SCREW BND T+ 2
9S02 2084730082 SCREW,BND T+ M3X8(BND T+) 1
9S03 2084730082 SCREW,BND T+ M3X8(BND T+) 1
-5-
9/24/2003
5. BLOCK DIAGRAM
787LE Service Manual
AC INPUT
100V ~ 220V
SYNC
I105
SW power supply
12V
I801
INVERTER
I901
P102
Q101,Q104
R.G.B INPUT
DC-DC
I804
PANEL
DISPLAY
LVDS
I106,I107
SCALAR
I101
MCU
I108,DDC
5V
VLCD
Q102
3.3V
I103
1.8V
I104
5V MCU
Q107,Q108
H,V SYNC
VGA INPUT
P104
SCL,SDA
VGA 5V
EEPROM
I109
-6-
OSC
X101
8/25/2003
6. Schematic Diagrams
6.1. ADE
787LE Service Manual
AVDD_1.8
C101
47uF/16V
C148
47uF/16V
C102
0.1uF
AVDD_3.3
C150
C149
0.1uF
0.1uF
REFR
REFG
REFCR
R102
15K 1%
0603
R104
15K 1%
0603
REFB
R106
15K 1%
0603
C155
0.1uF
0603
REFCG
C158
0.1uF
0603
REFCB
C161
0.1uF
0603
INTERNAL ADC REFERENCE RESISTORS AND
DECOUPLING CAPACITORS. PLACE THESE
COMPONENTS CLOSE TO THEIR RESPECTIVE
PINS
DGND
AGND and DGND are isolated,
not completely separated
Place near PAD1
C104
0.1uF
C151
0.1uF
R201 0R 0805
R202 0R 0805
R204 0R 0805
DGND
C105
0.1uF
C152
0.1uF
REFPR
C153
0.47uF
0603
REFPG
C156
0.47uF
0603
REFPB
C159
0.47uF
0603
AGND
AGND
C154
100pF
REFMR
C157
100pF
0603
REFMG
C160
100pF
0603
REFMB
C107
0.1uF
BEAD120R
RVDD_3.3
L101
1 2
0805
L103
1 2
0805
BEAD100R
R101
NC
ADE-RESET#[6]
BEAD120R
XVDD_1.8
LVDD_1.8
AHSYNC[4]
AVSYNC[4]
ADE-SCL[6]
ADE-SDA[6]
L102
1 2
0805
C138
0.1uF
0603
INR[4]
ING[4]
INB[4]
XCLK_EN
0:xclk o/p disable
1:xclk o/p active
C162
22pF
0603
C109
0.1uF
0603
R187
0603
PVDD_1.8
C110
0.1uF
0603
0R
R108 NC
R188
0R
0603
R110
0R
0603
R111
1M0603
X101
27MHz Crystal
AVDD_1.8
C111
0.1uF
0603
PLACE CAPACITORS C111, C112,
AND C113 ON PINS 14, 38, AND 42,
RESPECTIVELY
(TMDS power supply pins)
REFR OGA1
REFCR
REFPR
REFMR
REFG
REFCG
REFPG
REFMG
REFB
REFCB
REFPB
REFMB
C163
22pF
0603
C113
C112
1nF
0.1uF
DVDD_1.8 AVDD_1.8
I101
92
INR
80
ING
68
INB
55
HSYNC
54
VSYNC
53
CSYNC
183
CLKIN
87
REFR
95
REFCR
89
REFPR
88
REFMR
75
REFG
83
REFCG
77
REFPG
76
REFMG
63
REFB
71
REFCB
65
REFPB
64
REFMB
16
RX2M
17
RX2P
20
RX1M
21
RX1P
23
RX0M
24
RX0P
27
RXCP
28
RXCM
30
REXT
36
RBIAS
7
YUV0
6
YUV1
5
YUV2
4
YUV3
3
YUV4
2
YUV5
1
YUV6
208
YUV7
8
YUVCLK
203
SCL
204
SDA
207
RESETN
184
TCON_IN
206
XCLK_EN
99
TST_SCAN
48
XTAL_IN
49
XTAL_OUT
9
DVDD18
DGND DVDD18
10 11
121
123
140
DVDD18
DVDD18
DGND
DGND
12
100
105
AVDD_3.3
C114
10nF
0603
142
164
DVDD18
DVDD18
DVDD18
DGND
DGND
DGND
112
122
C115
C116
100pF
0.1uF
PLACE CAPACITORS C114, C115, C116, C117,
C118, C119, AND C120 ON PINS 15, 19, 22, 25,
29, (31 & 32), AND 40, RESPECTIVELY
(TMDS power supply pins)
DVDD_3.3 PVDD_1.8AVDD_3.3 AVDD_3.3
166
178
180
191
193
199
201
101
111
125
134
148
158
172
DVDD18
DVDD18
DVDD18
DVDD18
DVDD18
DVDD18
DVDD18
DVDD33
DVDD33
DVDD33
DVDD33
DVDD33
DVDD33
DGND
DGND
DGND
DNGD
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
124
135
141
143
149
159
165
167
173
179
181
186
192
194
200
DVDD_1.8
C123
C122
C118
C119
AVDD18
AVDD18
AVDD18
0.1uF
58596970818293
AVDD18
AVDD18
C120
10nF
AVDD33
AVDD33
AVDD33
AVDD33
C117
1nF
10nF
AVDD_1.8 LVDD_1.8 XVDD_1.8
185
61737485869798
AVDD18
AVDD18
DVDD33
DVDD33
ADE3XXX
PQFP208
DGND
DGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
202
56576062666772787984909196
C121
47uF/16V
DVDD_3.3
C139
47uF/16V
143842
15192225293132
94
AVDD33
AVDD33
AVDD33
AVDD33
RVDD18
RVDD18
RVDD18
RVDD33
RGND
RGND
RGND
RGND
RGND
RGND
RGND
AGND
1318263334353739414345
RGND
47uF/16V
RVDD33
RVDD33
RVDD33
RGND
PGND
C140
0.1uF
40
RVDD33
RVDD33
RVDD33
PGND
XGND
47
47uF/16V
C141
0.1uF
44
46
PVDD18
RVDD33
51
LVDD18
PVDD18
TCON0
TCON1
TCON2
TCON3
TCON4
TCON5
TCON6
TCON7
CLKOUT
C142
0.1uF
10uF/10V
ORA0
ORA1
ORA2
ORA3
ORA4
ORA5
ORA6
ORA7
OGA0
OGA1
OGA2
OGA3
OGA4
OGA5
OGA6
OGA7
OBA0
OBA1
OBA2
OBA3
OBA4
OBA5
OBA6
OBA7
ORB0
ORB1
ORB2
ORB3
ORB4
ORB5
ORB6
ORB7
OGB0
OGB1
OGB2
OGB3
OGB4
OGB5
OGB6
OGB7
OBB0
OBB1
OBB2
OBB3
OBB4
OBB5
OBB6
OBB7
OCLK
XCLK
C232
50
XVDD18
ODE
OHS
OVS
LGND
52
C124
0.1uF
C143
0.1uF
133
132
131
130
129
128
127
126
120
119
118
117
116
115
114
113
110
109
108
107
106
104
103
102
177
176
175
174
171
170
169
168
163
162
161
160
157
156
155
154
153
152
151
150
147
146
145
144
138
136
137
139
198
197
196
195
190
189
188
187
205
182
C125
0.1uF
C144
0.1uF
C233
1uF
ORA0
ORA1
ORA2
ORA3
ORA4
ORA5
ORA6
ORA7
OGA0
OGA2
OGA3
OGA4
OGA5
OGA6
OGA7
OBA0
OBA1
OBA2
OBA3
OBA4
OBA5
OBA6
OBA7
ORB0
ORB1
ORB2
ORB3
ORB4
ORB5
ORB6
ORB7
OGB0
OGB1
OGB2
OGB3
OGB4
OGB5
OGB6
OGB7
OBB0
OBB1
OBB2
OBB3
OBB4
OBB5
OBB6
OBB7
LVDD_1.8
C126
0.1uF
C164
0.1uF
0603
C145
0.1uF
C234
1uF
C127
0.1uF
C146
0.1uF
OCLK [5]
ODE
OHS
OVS
C128
C129
0.1uF
0.1uF
C147
0.1uF
0805
ORA[7:0] [5]
OGA[7:0] [5]
OBA[7:0] [5]
ORB[7:0] [5]
OGB[7:0]
OBB[7:0] [5]
[5]
[5]
[5]
Indicate Pin# at every 5/10 pins
5 : short line
10 : long line
1,53,105 &157 should be
labeled
C131
C130
0.1uF
0.1uF
ADE3000
1 52
[5]
C133
C132
0.1uF
0.1uF
GND splitting
* Same VIA #
* Similar
length
C134
0.1uF
AGND
104
RB
GB
BB
Sync
RA
GA
BA
C135
0.1uF
DGND
C136
0.1uF
C137
0.1uF
-7-
9/24/2003
6.2. Power
787LE Service Manual
P101
ON/OFF
1
BRIGHT
2
5V
3
4
GND
5
MUTE
6
VOLUM
7
8
[6]
ON/OFF
[6]
BRIGHT
PAD4
1
2
3
4 5
9
PAD2
1
2
3
4 5
9
8
7
6
8
7
6
MUTE 3
PAD5
1
2
3
4 5
9
PAD3
1
2
3
4 5
9
VOLUM 3
8
7
6
8
7
6
+5V
470uF/25V
DVDD_3.3
C170
L107
0.47/2W
1 2
0.47/2W
R256
L130
NC
1206
C178
0.1uF
0603
I103
RA:AMC7585-3.3ST
RB:AIC1084-33CM
R254
NC
I103
3
AIC1084
INPUT
OUTPUT
GND
1
I104 RC1117-ADJ
ADJ
VOUTVIN
SOT223
1
12V
249 1%
NC
2
23
R121
0603
L104
470uF/16V
C176
330uF/16V
Copper plate
Min : 10 x 10
mm
R120
0603
560
47uF/16V
DVDD_3.3
C177
0.1uF
C179
C165
NC
C171
1 2
DVDD_1.8
12
+
L119
BEAD60R
1206
C180
0.1uF
0603
C242
NC
AVDD_3.3
1206
L132
1 2
BEAD60R
L131
1 2
BEAD60R
1206
5V
CPT 18" USE L105 ONLY
AU 17",CMO 17",SANYO 18"
USE L106 ONLY
PAN 12V
L106
BEAD60R
1206
C174
NC
[6]
PANELPOWER
AVDD_1.8
R115
330
R119
2.2K
1Amax
NC
L105
1206
R116
330
Q102
KSB772
R113
10K
R118
R117
330
330
Q103
MMBT3904
DGND
DGND
PGND and DGND are isolated,
not completely separated
VLCD
CPT 18" R115,R116,R117,R118
USE 1.6K
-8-
9/24/2003
6.3. Input Interface
787LE Service Manual
INPUT INTERFACE
AVDD_3.3AVDD_3.3 AVDD_3.3
R134
47
0603
R135 100
0603
P104
10
11
12
13
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
11
12
13
D120
ZD5V6
1 2
DB15-SCL
DB15-SDA
DB15-AVSYNC
DB15-AHSYNC
VGA_5V
BLUE
GREEN
RED
DDC-SCL [6]
DDC-SDA[6]
VGA_5V
D103
1N4148
D106
1N4148
D104
1N4148
1 2
D107
1N4148
1 2
R128
75
0603
D105
1N4148
1 2
D108
1N4148
1 2
R129
75
0603
R128-130
Place at
CN side
Place near CN
1 2
1 2
L120
0603 0R
1 2
L121
0603 0R
1 2
L122
0603 0R
1 2
L120,L121,L122 change to 0R
R130
75
0603
Guraded by AGND All the way
(From CN to ADE) & >= 12mil
0603
R122 100
100
R125
R127 100
C187
C188
NC
NC
0603
0603
C182 0.1uF
C183 0.1uF
C186 0.1uF
0603
C189
NC
0603
R197
0R 0603
R198
0R 0603
R1990R0603
AGND
R/G/B
INB
ING
INR
AHSYNC is important signal
First Priority with Least VIA
TOP side ONLY
DB15-AHSYNC
[2]
[2]
[2]
DB15-AVSYNC
R126
33K/NC
0603
R133
33K/NC
0603
R123
330
0603
R131
330
0603
RC-AHSYNC
C240
C184
NC
0.1uF
0603
0603
RC-AVSYNC
C190
NC
0603
AVDD_3.3
23
D119
BAT54C
1
SOT-23
L127
BEAD120R
0805
1 2
I105F
14
13 12
7
74LVC14
SO-14
I105E
14
11 10
7
74LVC14
SO-14
R124
0603
22
R132
0603
AHSYNC [2]
C185
22P
0603
C191
22P
0603
AVSYNC [2]
22
AGND
Add VIA on AGND
every 10mm
C192
47p
C193
NC
D110
NC
D114
ZD5.6V
AVDD_3.3
1 2
1 2
R139
10K
0603
D111
NC
1 2
D115
ZD5.6V
1 2
D112
NC
1 2
D116
ZD5.6V
1 2
D113
NC
1 2
D117
ZD5.6V
1 2
Analog Input (VGA)
Place near CN
R140
10K
0603
RC-AVSYNC
RC-AHSYNC
I105A
14
1 2
7
74LVC14
SO-14
I105B
14
3 4
7
74LVC14
SO-14
R137
MCU_VS
100 0603
R138
MCU_CS
100 0603
-9-
9/24/2003
6.4. Output Interface
787LE Service Manual
ORA[7:0][2]
OGA[7:0][2]
OBA[7:0][2]
These are CRITICAL signal
NO VIA is allowed
OVS[2]
OCLK[2]
OHS[2]
ODE[2]
BRIGHTNESS[6]
BLON pin : Reset HIGH
Place Q104 if inverter is Low active
Place R180 if inverter is High active
C210
CAP/NC
0603
OBA0
OBA1
OBA2
OBA3
OBA4
OBA5
OBA6
OBA7
OCLK
OHS
ODE
OVS
ORA0
ORA1
ORA2
ORA3
ORA4
ORA5
ORA6
ORA7
OGA0
OGA1
OGA2
OGA3
OGA4
OGA5
OGA6
OGA7
1
2
3
4
1
2
3
4
R147 22
R148 22
R149 22
R151 22
R157
4.7K
0603
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
RP09
RP8SF
RP11
RP8SF
RP01
RP8SF
RP03
RP8SF
RP05
RP8SF
RP07
RP8SF
22R
22R
[6]
22R
22R
22R
22R
MMBT3904
BLON
3 2
8
7
6
5
8
7
6
5
0603
0603
0603
0603
0603
R251
SOT-23
1
Q104
MMBT3904
ORB[7:0][2]
OGB[7:0][2]
OBB[7:0][2]
C215
0.1uF
0603
RA0
8
RA1
7
RA2
6
RA3
5
RA4
8
RA5
7
RA6
6
RA7
5
GA0
8
GA1
7
GA2
6
GA3
5
GA4
8
GA5 GB5
7
GA6
6
GA7
5
BA0
BA1
BA2
BA3
BA4
BA5
BA6
TP12
1
FPVS
FPCLK
FPHS
FPDE
C211
CAP/NC
0603
+5V
R155
1K
0603
R156
1
Q101
2
MMBT3904
R160
NC
0603
2.2K
NC
3
0603
C212
0603
NC
0603
R159
TP13
R174
4.7K
0603
1
TP14
C213
0603
+
10uF/16V
1
C241
TP15
C214
0603
3
SOT-23
1
R252
NC
0603
+5V
R158
4.7K
0603
1
2
OBB0
OBB1
OBB2
OBB3
OBB4
OBB5
OBB6
OBB7
ORB0
ORB1
ORB2
ORB3
ORB4
ORB5
ORB6
ORB7
OGB0
OGB1
OGB2
OGB3
OGB4
OGB5
OGB6
OGB7
1
2
3
4
1
2
3
4
RP02
1
2
3
4
22R
RP8SF
RP04
1
2
3
4
22R
RP8SF
RP06
1
2
3
4
22R
RP8SF
RP08
1
2
3
4
22R
RP8SF
RP10
8
7
6
5
22R
RP8SF
RP12
8
7
6
5
22R
RP8SF
RB0
8
RB1
7
RB2
6
RB3
5
RB4
8
RB5
7
RB6
6
RB7
5
GB0
8
GB1
7
GB2
6
GB3
5
GB4
8
7
GB6
6
GB7
5
FPHS
FPVS
FPDE
DVDD_3.3
FPCLK
BB0
BB1
BB2
BB3
BB4
BB5
BB6
BB7BA7
FPHS
FPVS
FPDE
VCC_LVDS
RB6
RB7
RB0
RB1
RB2
RB3
RB4
RB5
GB6
GB7
GB0
GB1
GB2
GB3
GB4
GB5
BB6
BB7
BB0
BB1
BB2
BB3
BB4
BB5
FPCLK
0603
L123
BEAD60
1206
C202
0.1uF
C203
0.1uF
0603
RA6
RA7
RA0
RA1
RA2
RA3
RA4
RA5
GA6
GA7
GA0
GA1
GA2
GA3
GA4
GA5
BA6
BA7
BA0
BA1
BA2
BA3
BA4
BA5
50
51
52
54
55
56
10
11
12
14
16
18
15
19
20
22
23
24
25
27
28
30
31
VCC_LVDS
C194
0.1uF
0603
C204
0.1uF
0603
TXIN27
2
TXIN5
TXIN0
TXIN1
TXIN2
TXIN3
TXIN4
3
TXIN6
8
TXIN10
TXIN11
4
TXIN7
6
TXIN8
7
TXIN9
TXIN12
TXIN13
TXIN14
TXIN16
TXIN17
TXIN15
TXIN18
TXIN19
TXIN20
TXIN21
TXIN22
TXIN23
TXIN24
TXIN25
TXIN26
TXCLKIN
C195
0.1uF
0603
50
51
52
54
55
56
10
11
12
14
16
18
15
19
20
22
23
24
25
27
28
30
31
C205
0.1uF
0603
2
3
8
4
6
7
C196
0.1uF
0603
TXIN27
TXIN5
TXIN0
TXIN1
TXIN2
TXIN3
TXIN4
TXIN6
TXIN10
TXIN11
TXIN7
TXIN8
TXIN9
TXIN12
TXIN13
TXIN14
TXIN16
TXIN17
TXIN15
TXIN18
TXIN19
TXIN20
TXIN21
TXIN22
TXIN23
TXIN24
TXIN25
TXIN26
TXCLKIN
1917
VVV
I107
CS5824
TSSOP56
C197
0.1uF
0603
26
V
TXCLKOUT-
TXCLKOUT+
1917
VVV
I106
CS5824
TSSOP56
PWRDWN
TXOUT0-
TXOUT0+
TXOUT1-
TXOUT1+
TXOUT2-
TXOUT2+
TXOUT3-
TXOUT3+
LVDSVCC
LVDSGND
LVDSGND
LVDSGND
PLLVCC
PLLGND
PLLGND
GND
GND
GND
GND
GND
26
V
PWRDWN
TXOUT0-
TXOUT0+
TXOUT1-
TXOUT1+
TXOUT2-
TXOUT2+
TXOUT3-
TXOUT3+
TXCLKOUT-
TXCLKOUT+
LVDSVCC
LVDSGND
LVDSGND
LVDSGND
PLLVCC
PLLGND
PLLGND
GND
GND
GND
GND
GND
32
48
TXB1
47
46
45
42
41
38
37
40
39
44
49
43
36
34
35
33
53
29
21
13
5
LVDSPDN
TXB0
TXB2
TXB3
TXB4
TXB5
TXB6
TXB7
TXB8
TXB9
DVDD_3.3
R141
10K
0603
LVDSPDN
32
TXA0
48
TXA1
47
TXA2
46
TXA3
45
TXA4
42
TXA5
41
TXA6
38
TXA7
37
TXA8
40
TXA9
39
R142 0R
44
49
43
36
34
35
33
53
29
21
13
5
C199
0.1uF
0603
C200
10nF
0603
C198
0.1uF
0603
C201
1nF
0603
0603
L110
BEAD120R
0805
L111
BEAD120R
0805
LVDS_STBY[6]
VCC_LVDS
VCC_LVDS
VLCD
C169
0.1uF
C166
+
330uF/16V
GND
TXB0
TXB2
TXB4
TXB8
TXB6
TXA0
TXA2
GND
TXA4
TXA8
TXA6
VCC_LVDS
L112
C206
BEAD120R
0805
0.1uF
0603
VCC_LVDS
L113
C207
0.1uF
0603
C208
10nF
0603
C209
1nF
0603
BEAD120R
0805
OUTPUT INTERFACE
P105
1
2
1
2
3
4
3
4
6
5
6
7
19
16
13
11
9
30
28
17
26
23
21
CONN 15x2
5
7
9
11
13
15
17
19
21
23
25
27
29
GND
14
8
18
10
TXB3
15
12
12
14
TXB9
10
16
18
20
22
24
26
28
30
TXB7
8
TXA1
29
27
GND
24
25
TXA9
22
20
THE 6 PIN PCB MUST
CANCER DELETE
TXB1
TXB5
TXA3
TXA5
TXA7
BRIGHT [3]
ACTVE LOW
ON/0FF [3]
-10-
9/24/2003
6.5. MICROCONTROLLER
[3]
PANELPOWER
R178
3.3K
0603
ADE-SDA
[2]
ADE-SCL
[2]
ADE-RESET#[2]
+5V
R194
R193
POWER
LED_ORG
LED_GRN
MENU
UP
DOWN
ENTER
OSD Control
Panel
Interface
R192
3.3K
0603
C225NC
3.3K
0603
R195
R196
3.3K
3.3K
3.3K
0603
0603
0603
L114 BEAD600R
L115 BEAD600R
L116 BEAD600R
L117 BEAD600R
L118 BEAD600R
C226NC
C228NC
C227
C229NC
C230NC
NC
C231NC
R179
3.3K
0603
R180
NC
0603
+5V_MCU
R182
3.3K
0603
I/O KEY PORT
P103 CON8
CW5
787LE Service Manual
+5V
Q107
MMBT3906
C239
/STANDBY
WP
+5V_MCU
47uF
R168
100K
0603
BRIGHTNESS
RXD
TXD
VGA 5V
Write Protect (H:protect)
R169
10K
0603
+5V_MCU
* From 7414
MCU_VS
MCU_CS
LVDS_STBY
[4]
SCL
SDA
I109
24C16
DIP8
VCC
TEST
SCL
SDA
GND
1
A0
2
A1
3
A2
4
8
7
6
5
EEPROM
+5V_MCU
R175
4.7K
0603
R176
4.7K
0603
+5V_MCU+5V_MCU
R243
NC
0603
POWER
ENTER
2.2K
0603
BRIGHTNESS
DDC-SCL
R200
VOLUME
R244
[4]
2.2K
DDC-SDA
C220
NC
R242
0603
100
0603
100
0603
R165
LED_GRN
LED_ORG
R245
NC
0603
R246
+5V_MCU
R241
NC
0603
LED-GREENLED-GREEN LED-ORANGE
10k
0603
C221
33pF
0603
Q105
MMBT3906
R185
680
0603
BLON
+5V
Backlite ON
R186
680
0603
Q106
MMBT3906
C244
NC
0603
R167
0603
MUTE
10k
+12V
R183
3.3K
0603
ADE-SDA
ADE-SCL
ADE-RESET#
C238
0.1uF
0603
C216
0.1uF
0603
R253
0603
5V
R210
1k
R161
0
NC
0603
R162
R220
1K
0603
NC
0603
22pF
R177
0603
C222
0603
1K
C219
0.1uF
0603
R181
0603
X102
12MHz Crystal
R190
100
0603
1M
+5V_MCU
C218
0.1uF
0603
C223
22pF
0603
7
RST
8
VDD
9
P6.3/AD3
10
VSS
11
X2
12
X1
13
ISDA/P3.4/T0
14
ISCL/P3.5/T1
15
STOUT/P4.2
16
P6.2/AD2/HLFHI
17
P1.0
C217
0.1uF
0603
1
2
3
4
5
6
NC
NC
VDD3
DA0/P5.0
DA2/P5.2
DA1/P5.1
44
VSYNC
43
HSYNC
I108
MTV312M44PLCC
P1.1
P3.2/INT0
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
1819202122232425262728
R212
10K
41
42
DA3/P5.3
P6.1/AD1
DA4/P5.4
P6.0/AD0
R211
1.5K
MMBT3906
40
DA5/P5.5
DA8/HLFHO
DA9/HALFV
HBLANK/P4.1
VBLANK/P4.0
DA7/HCLAMP
DA6/P5.6
P6.7/DA13
P6.6/DA12
P6.5/DA11
P6.4/DA10
HSCL/P3.0/Rxd
HSDA/P3.1/Txd
Q108
39
38
37
36
35
34
33
32
31
30
29
SCL
SDA
MENU
UP
DOWN
8
1234567
LED-ORANGE
CW3
CW6
CW7
CW1
CW2
CW4
P701
8 HEADER
DOWN
S705
1234567
1
UP
S703
S702
PWR/SW
PSM/LED
PWR/LED
KEY PAD
GREEN
S704
ORANGE
D701
S706
8
2
MICROCONTROLLER
+5V_MCU
C224
0.1uF
0603
MUTE
VOLUME
P106
1
2
3
NC
C243
10u /50V
-11-
9/24/2003
6.6. POWER PCB
787LE Service Manual
D805 2A07
R840
D807 2A07
10 3A
D810 2A07
D813 2A07
C802
4700PF
Y1
C824
0.22UF
C811
0.1uF
L805
ET-20
R833
470K
R801
470K
C801
0.22UF
R803
NC
F801
2.5A/250V
L
R
G
P801
AC IN 100-240V
C803
4700PF
Y1
C808
100uF/25V
C804
22nF
R820
47K
R818
68K
Q804
2SC945
100K/1W
+
C812
120uF/400V
TEA1533AP
1
Vcc
+
2
GND
3
Ctrl
4 5
DEMSense
R821
39K 1%
R823
1K
7A3(6.8V)
R804
I801
Drain
HVS
Driver
D801
1N4148
D808
Q803
2SC945
10nF/630V
R802
100K/1W
D802
1H7G
8
7
6
R816
10K 1%
2SC2120
D809
15-2
C806
R807 10
R806 470
C805
1000PF
R814 33K1%R822 200K 1%
Q802
R819
4K7
R805
1
D806
1H5G
+
C810
22uF/25V
C823
4700PF
Y1
PQ-2620
1
2
3
5
6
L802
BEAD
Q801
A09N70I
R826 12K
C807 22nF
D803
1U5G
D811
1U5G
4
R817
4K7
3
T801
C809
220PF 1KV
I802
TLP721F
I803
TL431
C832
470nF
10-12
7-9
R810
0.15/2W
R809
9K1 1%
1
2
+
C831
1uF/50V
C822
22nF
D804
FCH30A15
R813
100
C818
220PF
R865
10K 1%
+
C821
1500UF/16V
R815 120
C819
2200PF
C820
0.1UF
R812
2.43K 1%
I804 L4973
20
Sync
19
SS
18
V5.1
17
Gnd
16
Gnd
15
Gnd
14
Gnd
13
Vfb
12
COMP
L809
BEAD
Out
Out
Vcc
Vcc
1
2
3
4
5
6
7
8
9
1011
OSC
Gnd
Gnd
Gnd
Gnd
BootINH
C829
680UF/16V
R808 150 1%
L804
+
5UH
C813
1500UF/16V
R811
9.1K 1%
C828
220nF
+
+
C816
1500UF/16V
C814
2.7nF
R824
20K 1%
C830
680uF/16V
C833
680uF/16V
+
D814
6V2
L812
115uH
+
D812
SR560
C826
680uF/16V
L806
28UH
TO Inverter
L810
+
BEAD
TO Inveter
L803
BEAD
TO Inverter
TO Inverter
8
ON/OFF
7
Brigntness
6
5V
5
5V
4
GND
3
Standby
2
Volume
1
GND
P802
TO Audio
TO Audio
TO Audio
L811
NC
1
12V
2
GND
P805
-12-
9/24/2003
Loading...