SONY 17 LEV1 Service Manual
17” LCD Color Monitor AOC 177Vk
Service
Service
Service
Horizontal Frequency
30-80 kHz
TABLE OF CONTENTS
Description Page Description Page
Table Of Contents.......……..............................…........1
Revision List.…........................................……......2
Important Safety Notice.…….........................……......3
1.Monitor Specification..............................………........4
2.LCD Monitor Description…………………………….......5
3.Operation Instruction……………...............……...........6
3.1.General Instructions………..........................…...........6
3.2.Control Button…………….…..............……...............6
3.3.Adjusting the Picture...........................…............7
4.Input/Output Specification............……………............9
4.1.Input Signal Connector............………….................9
4.2 Power Supply Requirement…………………………10
N
4.3.Factory Preset Display Modes.........................10
4.4.Panel Specification.....……...……………..................11
5.Block Diagram………...................…………................14
5.1.Software Flow Chart………………………...........14
6.Schematic…………………...................................…18
6.1.Main Board.................................................18
6.2. Audio Board.....………..…....................................23
6.3. Power Board....…..….….......................................24
7.PCB Layout..……………….......................................26
7.1.Main Board……………........................................26
7.2.Audio Board…............................................29
7.3.Power Board…............................................30
7.4.Key Board…………...…….....................................33
8.Maintainability…………….........................................34
8.1.Equipments and Tools Requirement...............34
8.2.Trouble Shooting…………..............................35
9.White-Balance Luminance adjustment………….....41
10.Monitor Exploded View……………………….........43
11.BOM List….....................................................45
12. Different Parts List …….…………….…...…………61
5.2.Electrical Block Diagram…………………..….......16
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS 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
17” LCD Color Monitor AOC 177Vk
Revision List
Revision Date Revision History TPV Model
A00 Dec-15-06 First Version Release
A01 Feb-08-07 Add new BOM in Item 12 T76CM6DBF1A5AP
T76MM6DBF1A1AP
T780KK6DBAA1AP
2
17” LCD Color Monitor AOC 177Vk
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 may 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 radiation 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.)
3
17” LCD Color Monitor AOC 177Vk
1. Monitor Specifications
Items Descriptions
Driving system TFT Color LCD
Type M170E5-L0C
Size 43.2cm 17"
LCD Panel
Pixel pitch 0.264mm( H )x 0.264mm( V )
Viewable angle 160˚ (H) 160˚ (V) (CR≥10)
Response time (type) 5 ms for CMO
R,G,B Analog Interface
Video
Digital Interface
15-pin D-Sub
Connector
DVI 24pin
Input
Power Consumption
Contrast Ratio 800:1
Dot Clock 135 MHz
White Luminance 300cd/m2
Max. Resolution 1280 x1024
Display Color 16.7M colors
Analog:0.7Vp-p(standard),
Video Signal
Sync. Type H/V TTL
H-Frequency 30kHz – 80kHz
V-Frequency 56-75Hz
ON Mode ≤37W
OFF Mode ≤1W
75 OHM, Positive
Digital signal
Plug & Play VESA DDC2BTM
Power Source 100~240VAC,47~63Hz
Maximum Screen Size
Environmental
Considerations
Horizontal : 337.92 mm
Vertical: 270.34 mm
Operating Temp: 5°C to 35°C
Storage Temp: -20°C to 60°C
Operating Humidity: 10% to 85%
4
17” LCD Color Monitor AOC 177Vk
(
)
2. LCD Monitor Description
The LCD MONITOR will contain a main board, an audio board, a power board and a key board which house the flat
panel control logic, brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Monitor Block Diagram
Power Board
Include: adapter, inverter
AC-IN
100V-240V
CCFL Drive.
Key Board
Flat Panel and
CCFL backlight
Main Board
Audio Board
RS232 Connector
For white balance
adjustment in factory
mode
Video signal, DDC
HOST Computer
5
17” LCD Color Monitor AOC 177Vk
3. Operating Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The control buttons are located at front panel of the monitor.
By changing these settings, the picture can be adjusted to your personal preferences.
The power cord should be connected.
-
Connect the video cable from the monitor to the video card.
-
Press the power button to turn on the monitor, the power indicator will light up.
-
3.2 Control Buttons
Item
1 Power Power On / Off
2 > / Audio
3 < / audio
4 Menu/Enter Select Function or select Sub menu Activate OSD main menu
5 Auto/Exit Exit OSD or back to previous menu Auto configuration
Name
1.Move the cursor up
2.Increase the value of the selected
1.Move the cursor down
2.Decrease the value of the selected
Within OSD
Power On / Off
Activate the audio menu
Activate the audio menu
Without OSD
6
17” LCD Color Monitor AOC 177Vk
3.3 Adjusting the Picture
OSD functions
Main Menu Item
Luminance
Image Setup
Image Position
Main
Menu
Icon
Sub Menu
Brightness
H. Position
V. Position
Item
Contrast
Focus
Clock
Sub
Menu
Icon
Description
Contrast from Digital-register.
Backlight Adjustment
Adjust Picture Phase to reduce Horizontal-Line noise
Adjust picture Clock to reduce Vertical-Line noise.
Adjust the horizontal position of the picture.
Adjust the vertical position of the picture.
Color Temp.
Warm N/A Recall warm Color Temperature from EEPROM.
Cool N/A Recall cool Color Temperature from EEPROM.
sRGB N/A Recall sRGB Color Temperature from EEPROM.
User / Red
User / Green
User / Blue
7
Red Gain from Digital-register.
Green Gain Digital-register.
Blue Gain from Digital-register.
17” LCD Color Monitor AOC 177Vk
Analog N/A Select input signal from analog source (D-Sub)
Input Select
OSD Setup
Language
Information
Reset
Digital N/A Select input signal from digital source (DVI)
H. Position
V. Position
OSD Timeout
Language N/A Select the language you like.
Information N/A
Yes N /A
No N/A Do not execute reset, return to main menu.
Adjust the horizontal position of the OSD.
Adjust the vertical position of the OSD.
Adjust the OSD timeout.
Show the resolution, H/V frequency and input port of
current input timing.
Clear each old status of Auto-configuration and set
the color temperature to Cool.
Exit
N/A N/A Exit OSD
8
17” LCD Color Monitor AOC 177Vk
4. Input/Output Specification
4.1 Input Signal Connector
1. D-SUB connector
Pin No. Description Pin No. Description
1.
2.
3.
4.
5.
6.
7.
8.
2. DVI-D connector
Red
Green
Blue
Ground
DDC-Return
R-Ground
G-Ground
B-Ground
VGA connector layout
9.
10.
11.
12.
13.
14.
15.
+ 5V
Detect Cable
Ground
DDC-Serial Data
H-Sync
V-Sync
DDC-Serial Clock
Pin No. Description Pin No. Description
1.
2.
3. TMDS data 2/4 Shield 15. GND (for +5V)
4.
5.
6. DDC Clock 18.
7. DDC Data 19. TMDS data 0/5 Shield
8. NC 20.
9.
10.
11. TMDS data 1/3 Shield 23. TMDS Clock +
12.
TMDS data 2－
TMDS data 2＋
TMDS data 4－
TMDS data 4＋
TMDS data 1－
TMDS data 1＋
TMDS data 3－
24 - Pin Color Display Signal Cable
13.
14.
16. Hot Plug Detect
17.
21. TMDS data 5+
22. TMDS Clock Shield
24.
TMDS data 3＋
＋5V Power
TMDS data 0－
TMDS data 0＋
TMDS data 5－
TMDS Clock －
9
17” LCD Color Monitor AOC 177Vk
4.2 Power Supply Requirement
A/C Line voltage range : 100 V ~ 240 V
A/C Line frequency range
Current : TBD
Peak surge current : < 55A peak at 240 VAC and cold starting
Leakage current : < 3.5mA
Power line surge
DC output Voltage
Current (max) : 3.5 Amp (12V)
4.3. Factory Preset Display Modes
Standard
Dos-mode 720 × 400 31.47kHz 70.0Hz
VGA
Resolution
640 × 480 31.47kHz 60.0Hz
640 × 480 37.50kHz 75.0Hz
: 50 ± 3Hz, 60 ± 3Hz
: No advance effects (no loss of information or defect) with a
maximum of 1 half-wave missing per second
: 12VDC ± 5％
Horizontal
Frequency
Vertical
Frequency
SVGA
XGA
SXGA
800 × 600 37.879kHz 60.0Hz
800 × 600 46.875kHz 75.0Hz
1024 × 768 48.363kHz 60.0Hz
1024 × 768 56.476kHz 70.0Hz
1024 × 768 60.021kHz 75.0Hz
1024 × 768 48.780 60.0Hz
1024 × 768 60.241 75.0Hz
1280 × 1024 64.000kHz 60.0Hz
1280 × 1024 80.00 75.0Hz
10
17” LCD Color Monitor AOC 177Vk
4.4 Panel Specification
4.4.1 Features
- Super wide viewing angle
- Super high contrast ratio
- Super fast response time
- High color saturation (EBU Like Specifications)
- SXGA (1280 x 1024 pixels) resolution
- DE (Data Enable) only mode
- LVDS (Low Voltage Differential Signaling) interface
- PSWG compatible
- RoHS compliance
- TCO’03 compliance
4.4.2 Display Characteristics
11
17” LCD Color Monitor AOC 177Vk
4.4.3 Optical Characteristics
12
17” LCD Color Monitor AOC 177Vk
4.4.4 Electrical Characteristics
1. TFT LCD Module
2. Backlight Unit
13
17″LCD Color Monitor AOC 177Vk
5. Block Diagram
5.1 Software Flow Chat
1
2
N
4
5
Y
6
7
Y
Y
3
N
N
8
18
9
1
Y
N
N
12
Y
14
19
N
11
N
13
Y
N
15
Y
17
16
Y
14
17″LCD Color Monitor AOC 177Vk
1) MCU initialize.
2) Is the EPROM blank?
3) Program the EPROM by default values.
4) Get the PWM value of brightness from EPROM.
5) Is the power key pressed?
6) Clear all global flags.
7) Are the AUTO and SELECT keys pressed?
8) Enter factory mode.
9) Save the power key status into EPROM.
Turn on the LED and set it to green color.
Scalar initializes.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are there any signals coming?
13) Does the scalar send out an interrupt request?
14) Wake up the scalar.
15) Are there any signals coming from analog port?
16) Display "No connection Check Signal Cable" message. And go into standby mode after the message
disappear.
17) Program the scalar to be able to show the coming mode.
18) Process the OSD display.
19) Read the keyboard. Is the power key pressed?
15
17″LCD Color Monitor AOC 177Vk
5.2 Electrical Block Diagram
5.2.1 Main Board
LCD Interface
(CN101)
Flash Memory
PM25LV512-25SCE
(U402)
Key Board
Control
(CN403)
EEPROM
M24C16
(U403)
Scalar IC TSUM56AK
(Include MCU, ADC, OSD)
(U401)
Crystal
14.318MHz
(X401)
Connector
(CN406)
DVI
Digital
Video
Signal
SCL_DVI,
SDA_DVI
H sync
V sync
RGB
D-Sub
Connector
(CN405)
SCL_VGA,
SDA_VGA
EEPROM
M24C02
(U405)
EEPROM
M24C02
(U404)
16
17″LCD Color Monitor AOC 177Vk
5.2.2 Inverter/Power Board
17
17" LCD Color Monitor AOC 177Vk
6. Schematic
6.1 Main Board
715G1558-2-2
TSUM56AK SCHEMATIC
XGA/SXGA
B3
+5V
+5V
RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYN C
DDCA_SDA
DDCA_SCL
DET_VGA
DDC_WP
CLK+
CLKDDCD_SDA
DDCD_SCL
DET_DVI
R+
R-
G+
GB+
B-
B4
RIN
GNDR
GIN
GNDG
SOG
BIN
GNDB
HSYNC
VSYNC
DDCA_SDA
DDCA_SCL
DET_VGA
DDC_WP
R+
RG+
G-
B+
BCLK+
CLK-
DDCD_SDA
DDCD_SCL
DET_DVI
3.INPUT
LVDS OUTPUT
VCC1.8
VCC3.3
VCC1. 8
Vcc3. 3
+5V
+12V
+12V
+5V
VCC3. 3
VCC5V
B5
PA[0..7]
PA[8..13]
PA[14..19]
+12V
PC5V
+3V3
VCC1.8
+5V
B2
+12V
+3V3
VCC1.8
+5V
VCC5V
VCC3. 3
on_BACKLIGHT
on_Panel
on_PANEL_12V
VCTRLPC5V
Adj_BACKLIGHT
VLCD
VLCD_12V
VLCD
VLCD_12V
on_BACKLIGHT
on_Panel
on_PANEL_12V
VCTRL
Adj_BACKLIGHT
4.SCALER
PB[0..5]
PB[6..11]
PB[12..23]
GPO[0.. 4]
ESP
OSP
2.POWER
PA[0..7]
PA[8..13]
PA[14..19]
PB[0..5]
PB[6..11]
PB[12..23]
GPO[0.. 4]
PA[0..7]
PA[8.. 13]
PA[14..19]
PB[0..5]
PB[6..11]
PB[12..23]
GPO[0.. 4]
ESP
OSP
VLCD
VLCD
VLCD_12V
5.PANEL INTERFACE
Titl e
Size Document Number Rev
B
Date: S heet
TSUM56AK
TOP
VLCD_12V
05Monday , May 09, 2005
A
of
18
17" LCD Color Monitor AOC 177Vk
U701
+5V
C701
NC
+12V
C707
C706
+
0.1uF
100uF/25V
R716
+3V3
C709
0.1uF
R717
10K 1/16W
4.7K 1/16W
+5V
C710
+
100uF/25V
R725
C718
0.1uF
+5V3,4 PC5V 3
4
Adj_BACKLIGHT
NC
on_Panel4
SOT-223
NC/ LT1117-18
3 2
VI VO
4
VO
GND
1
BL_ADJ(DC)
R31
0V ~ 3.3V
4.7K
0V ~ 5V
4.7K
R31
BL_ADJ
P W M
47
4K7
D C
+12V 4
CN701
GND
GND
+12V
GND
+5V
GND GND
R706
NC
R707
4.7K 1/16W
R714
10K 1/16W
1
3
5
7
9
11
CONN
+5V
R723 51K 1/16W
Q706
PMBS3904
VCC5V
2
4
6
8
10
12
Q701
C703
100uF/25V
C51
1UF
1UF
C32
N.C
1uF
BL_ON
BL_ADJ
+12V
GND
+5V
R701
1K 1/16W
R705
PMBS3904
+3V3
R715
NC
C715
0.1uF
+
R32
R29
0
X
1K
X
4.7K 1/16W
VLCD
Q704
AO3401L
+
10uF/16V
C708
C717
R33
X
4.7K
C711
0.1uF
1uF
C704
NC
Q4
X
MMBT3904
R708
10K 1/16W
VLCD 5
+5V
+5V
R721
0 1/16W
R727
10K 1/16W
+3V3
Q703
PMBS3904
+3V3
R710 NC
R712 4.7K 1/16W
P.S: The 1N4148 Vf=0.7V~1V can't meet
LDO spec. The BAT42, Vf is OK but the
If=200mA(forward current) can not
meet current spec.
For RSDS and Panel VCC=12V
+3V3
R722
NC
on_Panel_12V4
H1
678
9
678
9
5
4
123
TP
123
+5V
R711
10K 1/16W
D704(SSM12L) Vf=0.38V and If=1A.
So when system power on, the
system loading is about 400mA
(3.3V is about 200mA and 1.8V is
about 200mA), So D35 changed
from 1N4148(or BAT42) to
SSM12L(schottky diode).
+5V
R718
NC/10K
R726 NC/4K7
NC/0. 1uF
5
9
4
on_BACKLI GHT 4
+5V
R729
NC/10K
C720
H2
678
5
678
9
5
4
4
123
TP
123
+12V
R719
NC/ 10K
R724 51K
Q707
PMBS3904
C716
0.1uF
H3
9
9
123
123
VLCD_1 2V
Q705
AO3401L
+
NC/ 10uF/16V
C719
678
5
678
5
4
4
TP
+5V3,4
+5V3,4
D704
SMAL140
VLCD_12V 5
R728
NC/4K7
+5V
R732
+5V
1uF/16V
+5V
10 1/16W
2
R730
0 1/16W
C705
3
C713
0.1uF
PC5V
+12V
+
R709
0 1/16W
1
R731
NC
D701
C
1N4148
B
Q702
CHT2907
D702
E
1N4148
R704
100 1/16W
Recommond to used "Blue" parts circuit
for VCC1.8V if you want to suppoert DDC
function when system power off
D703
TO-263
BAT54C
U702
3
VIN
1
ADJ
AIC1084- 33PM
VOUT
VOUT
R720 0 1/16W
2
4
R713
NC
12/21 MODIFY
Titl e
Size Document Number Rev
B
Date: Sheet
TSUM56AK
R702
51 1/16W
C702
+
4.7uF/ 16V
R703
2K 1/16W
POWER
VCTRL 4
VCC3. 3
C712
+
100uF/25V
VCC1. 8
C714
0.1uF
VCC1.8 4
VCC3.3 4
VCC3. 3
15Monday, May 09, 2005
of
VCC3. 3 4
A
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