TITLE
Apex AVL3076 Level 1 Service Manual
AVL3076 LCD TV
DATE 08/20/2004
VER A1
PAGE 1/28
Service Manual
TITLE
P
Apex AVL3076 Level 1 Service Manual
System Block Diagram:
Inverte
OSD Keypad & Indicate LED
&Speaker Connector
MCU
LCD Panel
LCD Panel Interface
LCD
Controller
Video DecoderA/D Converter
Graphic Interface
SDRAM
DC/DC Converter
Audio & Power Interface
Speaker-R
Speaker-L
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Audio
rocessor
&
Amplifier
TV Module
TV
Interface
Power Adapter
To CATV
TITLE
Apex AVL3076 Level 1 Service Manual
Assembly/Disassembly procedure
Tools NLC30C2
Release speaker panel & screws as circle Speaker panel
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Take off AV & PC cover
TITLE
Apex AVL3076 Level 1 Service Manual
AV cover PC cover
Take off 6 screws of AV Box & Tuner Box Take off AV Box
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Take off AV Box AV Box
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TITLE
Apex AVL3076 Level 1 Service Manual
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Take off Tuner Box Tuner Box
Release 6 screws of stand Take off 4 screws of adapter cover
Take off adapter Adapter cover
Take off adapter Adapter
DATE 08/20/2004
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
PAGE 10/28
Release 6 screws of front bezel Release 8 screws & take off back
cover
Release 4 screws of wall mount
Wall mount Release 5 screws of M/B cover bracket
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TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
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Release 4 screws of PC panel bracket Take off PC panel bracket
PC panel bracket Take off M/B cover bracket as circle
Take off M/B cover bracket picture Release 10 screws of M/B
TITLE
Apex AVL3076 Level 1 Service Manual
Take off 8 cable of M/B M/B picture
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Take off 2 cable & SPK cable of inverter board Use tool to take off left SPK 4
cable
Use tool to take off 4 cable of right SPK Release 6 screws of right SPK
DATE 08/20/2004
TITLE
Apex AVL3076 Level 1 Service Manual
VER
A1
GE
PA 13/28
Release 6 screws of left SPK SPK 5W 8R, SPK 5W 4R
SPK 5W 8R, SPK 5W 4R Take off IR/B
Take off IR cable & 2 screws IR board
TITLE
Apex AVL3076 Level 1 Service Manual
IR board Take off keypad
DATE 08/20/2004
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Release 2 screws Release 2 screws & cable of keypad
Take off key board as arrow Function key & Function panel
DATE 08/20/2004
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
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Key board Release 8 screws of LCD panel
Front bezel Release 4 screws of panel bracket
Panel bracket Panel bracket
TITLE
Apex AVL3076 Level 1 Service Manual
Attention panel bezel Attention
DATE 08/20/2004
VER A1
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Attention: don’t adjust Attention
Trouble Shooting Analysis
DATE 08/20/2004
g
t
A
N
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
PAGE 17/28
Defect Mode Failure Analysis Repair Testing
Light On Test
Missing Line Check PCB M/B Change
Abnormal
Display
Bright Dot
Dark Dot
Check Panel Panel Change
Backlight
Light Leakage
Mura Check Panel Panel Change
Image Stickin
Brightness spo
Particle
Dot Defect
No display
Check PCB M/B Change
Inverter Change
Check Panel Panel Change
Check PCB M/B Change
Check Panel Panel Change
Next Step
G
TEST
Complete
Defect Mode Failure Analysis Repair Testing
Flicker Check PCB M/B Change
DATE 08/20/2004
N
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
PAGE 18/28
Defect Mode Failure Analysis Repair Testing
ON/OFF
Abnormal
o Power Check PCB M/B Change
Keypad/B Change
DATE 08/20/2004
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
PAGE 19/28
Defect Mode Failure Analysis Repair Testing
Other
Abnormal
Display
Display flicker
(tapping )
Check PCB
M/B Change
Check Panel
Inverter Change
DATE 08/20/2004
N
r
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
PAGE 20/28
Defect Mode Failure Analysis Repair Testing
Audio
Abnormal
Sound adjust
abnormal
Check PCB M/B Change
o sound Speaker Change
Check Speake
TITLE
N
Apex AVL3076 Level 1 Service Manual
DATE 08/20/2004
VER A1
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Defect Mode Failure Analysis Repair Testing
Video
Abnormal
( AV , SV ,
CV , TV )
AV , SV , CV
o Image
Check PCB M/B Change
Check Cable Cable Change
TV No Image
Check PCB M/B Change
Check RF Cable RF Cable Change
Check TV Module TV Module Change
TITLE
Apex AVL3076 Level 1 Service Manual
DATE 08/20/2004
VER A1
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Defect Mode Failure Analysis Repair Testing
Abnormal
BIOS
Upgrade
Can’t Upgrade
BIOS
Check PCB M/B Change
DATE 08/20/2004
TITLE
Use designed ISP tool to upgrade system BIOS:
1.Use RS-232 to link computer RS232 port (If no RS232 port can use USB transform)
and LC2700W RS232 port, as below picture.
Apex AVL3076 Level 1 Service Manual
VER A1
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DATE 08/20/2004
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
PAGE 24/28
2. The CPU used for processing ISP need to burn LD0415.BIN to the LDROM of CPU.
(Have burned before shipping)
3. Need to enter factory mode by press ( + ＋ ) buttons
MENU
VOL＋
VOL－
on OSD to execute ISP mode.
1.Push Menu 2.Push “►” button to access Factory Mode
3. Press”
▼” button to “ISP” item. 4. When press “Vol+” TV will be locked.
4. Execute ispwriter.exe file
To execute CPU ispwriter.exe
file on your PC, and the below screen appears:
DATE 08/20/2004
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
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5. Move the cursor to click “Select Chip” button and select the type of CPU (W78E65).
W78E65
6.Move the cursor to click “5Program Start at APROM” to cancel the selection.
W78E65
7. Move the cursor to click “Select Bank0” button to select the wanted program. The file
format is binary format instead of hex format.
TITLE
Apex AVL3076 Level 1 Service Manual
W78E65
DATE 08/20/2004
VER A1
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8. Select the Port Name on Communication Setting screen.
9. Move the cursor to click “Connect” button to link. If the linking succeeds, below screen
will appear.
TITLE
Apex AVL3076 Level 1 Service Manual
W78E65
DATE 08/20/2004
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10. Click “Program All” button to auto-execute erase and program function. After
execution below screen will appear. Click “confirm” button to finish the execution.
11. To click “verify” button to execute verify function. After verification, below screen will
appear. Click “confirm” button to finish the verify function.
DATE 08/20/2004
TITLE
Apex AVL3076 Level 1 Service Manual
VER A1
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12. After updating APROM program, disconnect ISP tool. Power on LCD TV again.
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