Dell E2009W, Service Manual

Page: 3 / 49

Service Manual
2
Table of Contents
CHAPTER 1- PRECAUTIONS & SAFETY NOTICES ..................................................................................................................... 3
1. SAFETY PRECAUTIONS .................................................................................................................................................... 3
2. PRODUCT SAFETY NOTICE .............................................................................................................................................. 3
3. SERVICE NOTES.................................................................................................................................................................. 3
CHAPTER 2- SERVICE TOOLS & EQUIPMENT REQUIRED ..................................................................................................... 4
CHAPTER 3- CIRCUIT THEORY ...................................................................................................................................................... 5
1. B
LOCK
D
IAGRAM
................................................................................................................................................................... 5
2. E
LECTRONIC
C
IRCUIT
T
HEORY
............................................................................................................................................... 7
3. FACTORY PRESET TIMING TABLE ................................................................................................................................ 13
4. P
OWER
O
N
/O
FF
S
EQUENCY
.................................................................................................................................................. 13
5. D-SUB C
ONNECTOR
P
IN
A
SSIGNMENT
................................................................................................................................. 14
6. AC O
UTLET
P
IN
A
SSIGNMENT
.............................................................................................................................................. 14
7. I
NNER
C
ONNECTOR
P
IN
A
SSIGNMENT
................................................................................................................................... 14
8. K
EY
P
ARTS
P
IN
A
SSIGNMENTS
.............................................................................................................................................. 16
CHAPTER 4- DISASSEMBLY & ASSEMBLY ................................................................................................................................. 21
1. E
XPLODED
D
IAGRAM
........................................................................................................................................................... 21
2. E2009W D
ISASSEMBLY
B
LOCK
............................................................................................................................................ 22
3. A
SSEMBLY
B
LOCK
................................................................................................................................................................ 23
CHAPTER 5- TEST AND ADJUSTMENT ........................................................................................................................................ 24
1. F
UNCTION KEY
D
EFINITIONS
................................................................................................................................................ 24
2. OSD C
ONTROL
..................................................................................................................................................................... 24
3. F
ACTORY
M
ODE
I
NTRODUCTION
........................................................................................................................................... 26
4. B
URN
-
IN PATTERN
................................................................................................................................................................. 27
5. A
UTO
C
OLOR
B
ALANCE
(A
UTOMATICALLY CALIBRATE CHIP
ADC
PARAMETER BY USING CHIP INTERNAL
DAC.)................ 27
6. U
PLOAD FIRMWARE TO
MCU
VIA
VGA C
ABLE
.................................................................................................................... 27
7. A
FTER REPAIR
,
TO ENSURE THE QUALITY YOU SHOULD DO THE FOLLOWING TEST AND ADJUSTMENT
. ................................... 27
CHAPTER 6- TROUBLE SHOOTING.............................................................................................................................................. 30
1. C
OMMON
A
CKNOWLEDGE
.................................................................................................................................................... 30
2. N
O
P
OWER
LED O
FF
............................................................................................................................................................ 30
3. P
OWER NORMAL
LED A
MBER
.............................................................................................................................................. 31
4. B
ACKLIGHT CAN
’
T BE TURNED ON
........................................................................................................................................ 33
5. N
O PICTURE
B
ACKLIGHT ON
............................................................................................................................................... 34
6. A
T
32-
GRAY SCALE PATTERN
,
COLOR LOST IN SOME SCALE
................................................................................................... 35
CHAPTER 7- RECOMMENDED PART LIST ................................................................................................................................. 35
ATTACHMENT 1- BILL OF MATERIAL......................................................................................................................................... 37
ATTACHMENT 2- SCHEMATIC....................................................................................................................................................... 47
ATTACHMENT 3- PCB LAYOUT ..................................................................................................................................................... 60