AOC LE46H158I Schematic
46″ LCD TV AOC LE46H158I
Service
Service
Service
31~68 KHz
TABLE OF CONTENTS
Description Page Description Page
Table of Contents.......……....................................…........1
Important Safety Notice.......................................……......2
Revision List…………………………………………………3
1. General Specification..............................……...…........4
2. Operating Instructions………………...…….……….......5
3. Input/Output Specification…………....................…......6
4. Mechanical Instructions……………………...................8
5. Repair Flow Chart.……………………….…….…….....12
6. PCB Layout.………………..…………………....….......19
6.1 Main Board………………..…………...…….…….......19
6.2 Power Board……...……….………..…….……….......21
6.3 LED Board..………………………..……..……….......26
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
6.4 Key Board………….…………..……..……….......26
6.5 IR Board………………………….……..……….......27
7. Adjustment..............................................................28
8. Block Diagram.…….................................................29
9. Schematic Diagram…..…………....………………...30
9.1 Main Board…………………………………...….......30
9.2 Power Board…………..….….……...………….......52
9.3 LED Board……...……….……….…………….........57
9.4 Key Board……………….……….…………….........58
9.5 IR Board……...………….……….…………….........59
10. Exploded View………………………………….…...60
11. BOM List……………….………………….………….62
Horizontal Frequency
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
1
Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service
procedures recommended by AOC and described in this service manual are effective methods of performing service
operations. Some of these service operations require the use of tools specially designed for the purpose. The
special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in
order to minimize the risk of personal injury to service personnel. The possibility exists that improper service
methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE
NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in
which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, AOC Company will be referred to as AOC.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics might create
shock, fire, or other hazards.
Under no circumstances should the original design be modified or altered without written permission from AOC.
AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiations when open AVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF
THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to
the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may
damage the panel.)
2
Revision List
Version Release Date Revision Instructions TPV Model
A00 Aug.19,2011 Initial release E46BATNSAJB16N
3
1. General Specification
Please refer to user manual.
4
2. Operating Instructions
Please refer to user manual.
5
3. Input/Output Specification
3.1 RGB Signal Input
15 - Pin Color Display Signal Cable
Pin No. Description Pin No. Description
1 Red Video 9 No Pin!
2 Green Video 10 Sync Ground
3 Blue Video 11 RXD
4 TXD 12 Serial Data for DDC
5 Ground 13 H-Sync.
6 Red Ground 14 V-Sync.
7 Green Ground 15 Serial Clock for DDC
8 Blue Ground
3.2 HDMI Digital Connector Pin Assignments
Pin No. Description Pin No. Description
1 TMDS Data2+ 2 TMDS Data2 Shield
3 TMDS Data2- 4 TMDS Data1+
5 TMDS Data1 Shield 6 TMDS Data1-
7 TMDS Data0+ 8 TMDS Data0 Shield
9 TMDS Data0- 10 TMDS Clock+
11 TMDS Clock Shield 12 TMDS Clock13 CEC 14 NC
15 SCL 16 SDA
17 DDC/CEC Ground 18 +5V Power
19 Hot Plug Detect
6
3.3 Compatible Mode Table
RGB Input Signal Timing
HDMI Input Signal Timing
7
4. Mechanical Instructions
1. Remove the screws to remove STAND BASE.
2. Remove the screws to remove REAR COVER.
8
3. Disconnect the harness in red.
4. Remove the screws to remove BRACKET_STAND.
9
5. Remove the screws to remove Speaker, BKT, MAIN BOARD and POWER BOARD.
6. Remove the screws to remove BKT and separate PANEL and BEZEL.
10
7. Remove the screws to remove KEY BOARD.
11
p
p
5. Repair Flow Chart
1. No power
No power (LED “Off”)
Check the AC input and
ower is “ON”?
the
Yes
Power board
ut=5.2V?
out
Yes
Check the IR board and LED
Replace the IR board
No
Replace the main board
No
Power “On”
No
Replace the power board
12
2. Can’t start
Can’t start
Power board output＝24V?
Yes
Check the power key is under control?
No
Check the IR receiver is normal?
No
Replace the power board
Yes
Replace the key board
Yes
Replace the IR board
No
Replace the main board
No
Replace the Power board
13
3. Abnormal display
Abnormal Display
Check the source
Yes
Enter factory mode to do
“EEPROM initial”&“Reset”
No
No
Reset the source
Check the main board
Yes
Check the LVDS cable
Yes
Check the panel
No
Replace the panel
No
Replace the main board
No
Replace the LVDS cable
14
4. No display
No display (LED blue)
Check TV is under control and power
on/off by remote control and power key?
Yes
Check the LVDS cable
Yes
Yes
Check the backlight is
“On”?
No
Reinsert or replace the
LVDS cable
No
No
Check the B/L
signal is available?
Yes
Replace the main board
No
Replace main board
Panel Vcc = 12V?
Yes
Replace the Panel
No
Replace the main board
Power board output＝24V?
Yes
Replace the Panel
Replace the power board
No
15
5. Sound problem
No sound or sound abnormal
Check the audio source connection
and the TV system are correct?
Yes
Check the TV is muted, adjust the
volume or enter the menu to reset?
No
No
Reinsert the audio cable or
change the TV system
Enter factory mode to do “Reset”
No
Check the cable between the
speakers and main board is OK?
Yes
Check the speaker resistance value is in spec
(Remark: The value is marked on the speaker)?
Yes
Replace the cable
Replace the main board
No
No
Replace the speaker
16
6. Remote control malfunction
Remote Control malfunction
Check the remote control battery is
not properly placed or no power?
No
Use the other remote controls
No
Whether the IR board is
abnormal?
No
Replace the main board
Yes
Replace the battery
Yes
Replace the remote control
Yes
Replace the IR board
17
7. OSD is unstable or can’t work normally
OSD is unstable or can’t work normally
Key board connected properly?
Yes
Buttons are OK?
Yes
Key board is OK?
Yes
Enter factory mode to do “Reset”
No
No
No
No
Reconnect the key board
Replace the button function
Replace the key board
Replace the main board
18
6. PCB Layout
6.1 Main Board
715G4649M01000005F
19
20
6.2 Power Board
715G4686P01000003M
21
22 23
715G4919P0G0000040
24
25 26
6.3 LED Board
715G4684T01001004S
6.4 Key Board
715G4682K01000004S
6.5 IR Board
715G4781R02000005F
27
7. Adjustment
No need to adjust ADC and White Balance.
28
8. Block Diagram
2 Speakers
SPDIF
OUTPUT
EUA2110
AUDIO AMP
AUDIO IN
Analog Audio A FE
Audio
Post-processing
MSP
AV MIPS
EJTAG
EJT A G
GPIO
GPIO
PWM
USB HUB
PWM(3)
UMAC
10M/100M
Ethernet
USB
PHY
LAN8720A
PHY
USB
MA C
Ethernet
MA C
Main CPU
MIPS 24Kc @ 500MHz
I2C
BUS
I2C
UART
UA RT
STANDBY
MCU
(8051)
RTC
IR Decode
Key Pad
CEC
Slow ADC
UART
I2C
SPI Interface
GPIO
MIPS b us
MD: 32bits
MA: 15bits
IR IN
RS232
DDC Channel
SPI Flash
STB GPIO
HDMI CEC
IR Sensor
NAND flash
DDR3(1066)
CVBS IN
YPbPr IN
PC RGB
HDMI_1
HDMI_2
HDMI_3
HDMI_4
LG: TDTK-H801F
VIF/SIF
ATSC,DVB-T/C
VSB/QAM
Demodulator
AFE
10-bit,54MHz
Analog Video Mux
AFE:108MHz
10-bits
Analog Video Mux
MUX
HDMI 1. 4
Transport Demux
10-Bit
3-D
Comb
MUX
Component/PC RGB
Multi-Format
Video decoder
MPEG-2,H.264
VC-1 ,DivX
JPEG Assist
etc.
Video
Decoder
RM
VBI
Slicer
29
1080p@60Hz
30 bits
1080p@60Hz
SELECT
30 bits
MAIN
1:Y UV/RGB
Of fset &Gain
2:IC SC
3:H f ilter
4:H/ V Scaler
5:Mov ie Motor
Edge
PIP
1:Y UV/RGB
Of fset &Gain
2:IC SC
3:Scaler
CV BS
Out
Scaler
MAIN
1:ESR I I
2:DCRe
9th genration
3:IPC
4:Super Scaler
5:Color
6:HV s harpness
7:TNR,SNR
MMR, MBN R
PIP
Brightness
Color
Contrast
Tint
TV
Encoder
H&V
OSD sc aler
H&V
Blender
1:Gamma
2:Whit e
balance
3:12-bit
resolution
4:RGB
process ing
5:xv YCC
6:2x c olor
Mat rix
OSD1-2
RGB
Video
DA C
Hal o
Fr ee
ME/MC
FRC
Dua l
LVDS
1:SSC
2:10-bits
3:1080p
Mux&6B
LVDS OU T
1080P 10-bit 60Hz
FRC9459S
LVDS OUT
1080P 120HZ
Gain
9. Schematic Diagram
9.1 Main Board
715G4649M01000005F
5VSB_IN
R703
10K 1/10W
PWR_ON
C708
0.1uF 50V
Q702
PMBS3904
BL_ON1
CN701
C723
0.1uF 50V
5V_SW
C705
0.1uF 50V
CONN
5VSB_IN
0 OHM
FB701
1 2
C722
0.1uF 50V
5V_SW
R702
10K 1/10W
1
2
3
4
5
6
7
8
9
10
11
12
13
0.1uF 50V
C712
10uF 10V
Vout = 0.8x(1+ R712/R713)=1.066V
V_3.3
R701
Q701
1K 1/16W
PMBS3904
BL_ON1
BL_PWM
C703
0.1uF 50V
+24V_AMP
C706
10 OHM 1/10W
C713
1UF16V
0.1uF 50V
+
G1117-33T63Uf 1A/3.3V SOT-223
U704
VI3VO
C724
10uF 10V
C714
1
R716
0.1uF 50V
GND
10K 1/10W
C718
R709
R724
10K 1/10W
5VSB_IN
C707
470uF 10V
4
R711
0.1uF 50V
NC
R704
1K 1/16W
BL_PWM
100P 50V
BL_ON/OF F# 15
V12
C704
+
470uF 16V
PWR_ON
C725
2
4
0.1uF 50V
8
5
1
2
C715
C711
10uF 10V
AT1529F11U
VIN
EN
VCC
REF
PS_ON# 17
5V_SW R749
10K 1/10W
R705
1K 1/10W
R706
C710
NC 4.7UF 16V
V_3.3
0.1uF 50V
C7737
C7740
+
100uF/16V
Linear equation: Vout=1.25v *(1+Rdown/Rup)
33mA Max
C726
PWM 1M
U705
PGND
6
LX
FB
GND
Thermal Pad
3
9
FB719
1 2
120R/3000mA
+
C747
47uF/16V
L701 2.2uH 30%
7
C721
470uF 10V
4
75% Efficent at 1.05V 2.3A
R714
NC
R707
R708
Q703
PMBS3904
U715
3
VIN
VOUT
1
GND/adj
G1117T63Uf
10 OHM +-1% 1/ 10W
3.3VSB
+
C743
22uF 10V
V_3.3
NC
1K 1/16W
2
4
TH
R710
10K 1/10W
470OHM1/10W
R753
C748
10uF 10V
0.1uF 50V
C717
NC 150pF 50V
C720
CN702
NC
BRT_CTRL 14,15
R754
C7739
+
100uF/16V
5V_SW
C733
1UF16V
2300mA Max
1 2
R712
3.3K +- 1% 1/10W
R713
9.1KOHM + -1% 1/10W
12
11
10
9
8
7
6
5
4
3
2
1
13 14
60mA Max
120OHM
FB114
1 2
C7738
0.1uF 50V
R720
10 OHM 1/10W
C742
0.1uF 50V
SX_PWRON#17
+1.2V
10K 1/10W
R721
0.1uF 50V
For demodulator
C751
MEMC_ SCL 16 ,24
MEMC_ SDA 16, 24
MEMC5V_SW# 16,23
V105_SW# 16,23
V105DLL_SW# 16,23
RESET_FRC# 17 ,24
R746
10K 1/10W
PWM 1M
AT1529F11U
U707
8
VIN
5
EN
1
VCC
2
REF
PGND
6
1 2
Vout = 0.8x(1+ (R719+R723)/R718)=1.52V
95% Efficent at 3.3V 1A
120OHM
VD_CORE
FB702
5V_SW
C739
C738
0.1uF 50V
10uF 10V
NC
FB720
7
LX
4
FB
GND
Thermal Pad
3
9
G1084-25TU3Uf
U708
VIN3VOUT
GND
1
MEMC_ 5V1
5VSB_IN
R745
10K 1/10W
10K 1/10W
R748
10K 1/10W
Q711
PMBS3904
5V_SW
C729
0.1uF 50V
L702 2.2uH 30%
C749
100uF/16V
500mA Max
2
C737
0.1uF 50V
0.1uF 50V
C719
+
C745
22uF 10V
NC 150pF 50V
1 2
FB703
+
C736
47uF/16V
T P V ( Top Victory Electronics Co . , Ltd. )
絬 隔 瓜 絪 腹
Key Component
03: Main Power
Date
PMBS3904
C727
10uF 10V
C734
0 OHM
NC 100K 1/10W
R234
0.1uF 50V
R743
100K 1/10W
Q710
U706
3
1
AIC1084-33GMTR
3V3_SW
R719
R723
300R 1/10W 1%
2.4KOHM + -1% 1/10W
R718
3K +-% 1/10W
V_2.5
C709
AO4449 -7A/-30V
Q709
1
S
D
2
S
D
3
S
D
4
G
D
450mA Max
10uF
C730
2
VIN
VOUT
ADJ
C728
0.1uF 50V
5V_SW
NC 120OHM
FB706
1 2
C7743
NC
5V_SW
V_2.5
10K+-5%1/16W
C740
C7742
10uF
1UF 10V
Vo=0.8(1+R752/R751)=1.14V
OEM MODEL
TPV MO DEL
PCB NAME
Sheet
8
7
6
5
1200mA Max
NC
R755
R750
VA_1.1
R744
10K 1/10W
C7741
1UF 10V
120OHM
FB722
1 2
+
C750
47uF/16V
120OHM
FB707
1 2
U703
9
E-Pad
C752
NC
1
2
3
NC
POK
VEN
VIN
VPP4NC
NC
GND
ADJ
8
7
6
VO
5
NC
R722
Vo=1.25(1+R_down/R_up)
U701
E-Pad
1
POK
GND
2
VEN
ADJ
3
VIN
VO
VPP4NC
G9661
+
C741
C7744
10uF
47uF/16V
of
425Thursday , March 24, 2011
5V_SW
120OHM
FB721
1 2
V_3.3
C732
10uF
C731
0.1uF 50V
101 Max from 3.3V
℃
73 Max from 2.8V
℃
Out current 771mA Max
drop-V min 1V 73 /W TO263
10uF
C735
R715
202mA 50 /W
9
8
7
6
5
C716
0.1uF 50V
R717
NC
℃
R752
390 OHM +-1% 1/10W
R751
910 OHM +-1% 1/10W
+
Size
Rev
称爹
℃
120OHM
FB705
1 2
C744
47uF/16V
A3
B
<
称爹
>
V_1.5
30
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