AOC 919sz Service Manual

 
 
11
V.Position  0-100  Adjust the horizontal position of 
the picture.   
 
Color Temp.     
Warm  
6500K 
Recall Warm Color Temperature 
from EEPROM.   
Normal  
7300K 
Recall Normal Color 
Temperature from EEPROM.   
Cool  
9300K   
Recall Cool Color Temperature 
from EEPROM.   
sRGB   Recall SRGB Color Temperature 
from EEPROM.   
User  
Red Red Gain from Digital-register   
Green Green Gain Digital-register.   
Blue Blue Gain from Digital-register   
 
Color Boost     
Full Enhance   on or off...

 
 
12
OSD 
Timeout  5-120 Adjust the OSD Timeout   
Transparence 0-100 Adjust the transparence of OSD
Language   Select the OSD language   
 
Extra    
Input Select 
Auto Select to Auto Detect input signal
Analog Select Analog Sigal Source as 
Input 
Digital Select Digital Sigal Source as 
Input 
Auto Config   yes or no   Auto adjust the picture to default 
Image Ratio wide or 4:3 Select wide or 4:3 format for 
display  
DDC-CI yes or no Turn ON/OFF DDC-CI Support 
Off Timer 0~24hours Select timing to...

 
 
13
4. Input/Output Specification 
4.1 Input Signal Connector 
Analog connector 
 
 
Pin Number 15-Pin Side of the Signal Cable
1 Video-Red 
2 Video-Green 
3 Video-Blue 
4 N.C. 
5 Detect Cable 
6 GND-R 
7 GND-G 
8 GND-B 
9 +5V 
10 Ground 
11 N.C. 
12 DDC-Serial data 
13 H-sync 
14 V-sync 
15 DDC-Serial clock 
 
DVI connector (FOR 919Pz&919Vz) 
 
Pin No. Signal Name Pin No.Signal Name Pin No. Signal Name 
1 TMDS Data 2- 9 TMDS Data 1- 17 TMDS Data 0- 
2 TMDS Data 2+ 10 TMDS Data 1+ 18 TMDS Data 0+ 
3...

 
 
14
4.2 Factory Preset Display Modes 
Stand Resolution  Horizontal Frequency(kHz)Vertical Frequency(Hz) 
VGA 640×480@60Hz DMT 31.469 59.940 
Mac-mode 640×480@67Hz MAC 35.000 66.667 
VGA 640×480@72Hz DMT 37.861 72.809 
VGA 640×480@75Hz DMT 37.500 75.000 
Dos-mode 720×400@70Hz DOS 31.469 70.087 
SVGA 800×600@56Hz DMT 35.156 56.250 
SVGA 800×600@60Hz DMT 37.879 60.317 
SVGA 800×600@72Hz DMT 48.077 72.188 
SVGA 800×600@75Hz DMT 46.875 75.000 
Mac-mode 832×624@75Hz MAC 49.725 74.500 
XGA 1024×768@60Hz DMT...

 
 
15
4.3 Panel Specification  
4.3.1 General Features 
HannStar Display model HSD190MEN4-A* is a color active matrix thin film transistor (TFT) liquid crystal display 
(LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel, the 
voltage reference, common voltage, DC-DC converter, column, and row driver circuit. This TFT LCD has a 19-inch 
diagonally measured active display area with SXGA resolution (1024 vertical by 1280 horizontal pixel array). 
4.3.2...

 
 
16 Back-Light Unit 
 
4.3.4 Optical Characteristics 
 
 
 
 
 

 
 
17
5. Block Diagram 
5.1 Main Board 
DVI for 919Pz&919Vz 
     
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
14.31818MHZ 
(X401) 
FLASH ROM 
MX25L2026MI 
(U402) 
 
Scalar IC TSUMO58QWHL-LF 
 
(Include ADC, OSD, MCU) 
 
(U401) 
Panel Interface
(CN301)
 
Key Control Interface
(CN401)  
D-Sub Connector 
(CN101) DVI Connector 
(CN102) 
 

 
 
18
5.2 Power Board 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
EMI filter   
Start Resistor 
(R904,R905)
 
PWM Control   
(IC901) 
Transformer  AC input 
5V 
ON/OFFFeedback 
Circui
t 
Transformer
(PT801) MOSFET 
(Q805, Q806) 
Lamp 
16V Bridge 
Rectifier 
and Filter 
Feedback 
Circuit 
Rectifier 
diodes 
Output 
Circui
t
PWM Control 
TA9687GN 
(IC801) 
Power Switch
(Q901)
 
Photo coupler
(IC903)
 
16V 
DIM 
PID
5V
+5V 
Audio Power Amplifier
APA2069JITUL 
(IC601) CN601 (Phone Jack) 
CN602 
 

 
19 6. Schematic 6.1 Main Board 715G3329  1  2 DVI for 919Pz&919Vz 
 
RX0P 5 VGA_R -
CMVCC1
VGA_PLU G
C109
5pF  50V
RX1P
R121
NC
DET_CABLE 5
ESD _VC C2
C110
47N  16V
FB104
300 OH M
RX2P
R 118 100OH M1/ 16W
FB110
300 OH M
C104
22P 50V
DSUB_SOG 5
C112
NC
C116
220nF 16V
DVI_5V
DDC1_SCL 5VGA_PLU G
DDC2_SCL
U102
AT24C02BN-SH-T
1234
5678
A0
A1
A2
GN D SD A SC L WP VC C
R113
100OHM1/16W
RX2N 5 DSUB_SCL
VGA_G+
R1396. 8K1/ 16W
GND  POW ERVGA_G+
FB101
BEAD1
2
R117
100OH M1/ 16W
C117
220nF 16V1B
25 Friday , May...

 
20 
RXOC-
R304
22K1/ 16W
LVB3P
R303
4. 7K1/ 16W
PPW R_ON# 5RXOC+
LVA1PRXO0+
PANEL_VCC
PA0
RXO3-
PB6
LVACKM LVB3M
LVA2P
R 308
10K1/ 16W
RXEC+RXOC-
PB3
LVA1M
G
C 303
1U F 16V
PB0
LVB1M
LVA1P
LVB1P
PA3PA9
A O3401L
LVA3P
RXO2-
RXO0-
RXE3+
LVA0M
PA[0..9] 5
PA1
PA[0..9]
LVA2M LVA0PLVB2M
RXEC-
SPB8LVB2P
RXE1-
LVBCKP
RXO2+
CMVCC1 2, 4
C 304
100N  25V
R 301
220 OH M 1/4W
RXE1-
U 301
N C / AO44111234
8765
S S
S
G
D D
D
D
CMVCC1RXEC+
RXE0-
RXE2-RXO1+
LVB2P
CMVCC1RXO3+
LVAC KP
PANEL_VCC PB1
RXE3-
LVB3P...