HP Vs17e - Pavilion - 17" LCD Monitor User manual

HP VS17E
1
SERVICE MANUAL
17” LCD Monitor
VS17E
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE
EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE
ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.

HP VS17E
2
Table of Content
Revision List ---------------------------------------------------------------------------------------------------------------------------- 03
1.Monitor Specification -------------------------------------------------------------------------------------------------------------- 04
2.LCD Monitor Description --------------------------------------------------------------------------------------------------------- 05
3.Operation Instructions ------------------------------------------------------------------------------------------------------------ 05
3.1 General Instructions ------------------------------------------------------------------------------------------------------------ 05
3.2 Control Button ------------------------------------------------------------------------------------------------------------------- 06
3.3 Adjusting The Picture ---------------------------------------------------------------------------------------------------------- 07
4. Input/Output Specification ------------------------------------------------------------------------------------------------------ 08
4.1 Input Signal Connector -------------------------------------------------------------------------------------------------------- 08
4.2 Factory Preset Display Modes ---------------------------------------------------------------------------------------------- 09
4.3 Power Supply Requirements ------------------------------------------------------------------------------------------------- 09
5.Panel Specification ------------------------------------------------------------------------------------------------------------------- 10
5.1 General Feature ----------------------------------------------------------------------------------------------------------------- 10
5.2 Optical Characteristics --------------------------------------------------------------------------------------------------------- 11
6. Block Diagram ---------------------------------------------------------------------------------------------------------------------- 12
6.1 Monitor Exploded View ------------------------------------------------------------------------------------------------------- 12
6.2 Software Flow Chart ------------------------------------------------------------------------------------------------------------ 13
6.3 Electrical Block Diagram ------------------------------------------------------------------------------------------------------- 15
6.3.1 Scalar Board ---------------------------------------------------------------------------------------------------------------- 15
6.3.2 Inverter/Power Board ----------------------------------------------------------------------------------------------------- 16
7. Schematic ---------------------------------------------------------------------------------------------------------------------------- 17
7.1Main Board ---------------------------------------------------------------------------------------------------------------------- 17
7.2 Power Board -------------------------------------------------------------------------------------------------------------------- 23
8. PCB Layout -------------------------------------------------------------------------------------------------------------------------- 26
8.1 Main Board ----------------------------------------------------------------------------------------------------------------------- 26
8.2 Inverter/Power Board ----------------------------------------------------------------------------------------------------------- 27
8.3 Key Board ------------------------------------------------------------------------------------------------------------------------- 27
9. Maintainability ----------------------------------------------------------------------------------------------------------------------- 28
9.1 Equipments and Tools Requirements -------------------------------------------------------------------------------------- 28
9.2 Trouble Shooting ---------------------------------------------------------------------------------------------------------------- 29
9.2.1 Main Board --------------------------------------------------------------------------------------------------------------- 29
9.2.2 Power/Inverter Board --------------------------------------------------------------------------------------------------- 32
9.2.3 Key Pad Board ------------------------------------------------------------------------------------------------------------- 34
10. White-Balance, Luminance Adjustment --------------------------------------------------------------------------------- 35
11. Check List After Replacing LCD Main Board ---------------------------------------------------------------------------- 37
12. EDID Content ---------------------------------------------------------------------------------------------------------------------- 41
13. BOM List ----------------------------------------------------------------------------------------------------------------------------- 42

HP VS17E
3
Revision List
Version Date Revision History TPV Mode Name
A00 Jan-24-06 Initial release T786KS4DFHHPAPE

HP VS17E
4
1.Monitor Specification
Items Description
LCD Panel
Driving system TFT Color LCD
Panel LTM170EU-L11
Size 337.920(H) x270.336 (V) (43.2cm 17.0")
Pixel pitch 0.264mm( H )x 0.264mm( V )
Viewable angle 140˚(H) 120˚(V)
Response time (typ.) 16 ms
Brightness 250
Contrast 400:1
Input
Video Analog
Sync. Type H/V TTL
H-Frequency 30kHz – 83kHz
V-Frequency 50-76Hz
Display Colors Over 16 million Colors
Dot Clock 140MHz
Max. Resolution 1280 x 1024
Plug & Play VESA DDC2BTM
Power Consumption
ON Mode ≤37W
Sleep Mode ≤2W
OFF Mode ≤1W
Power Source 90~265VAC,47~63Hz
Environmental
Considerations
Operating Temp: 5°C to 35°C
Storage Temp.: -20°C to 60°C
Operating Humidity : 20% to 80%
Main Dimensions Unpackaged(W*H*D) 379.5mm*390.6mm*203.9mm
Packaged(W*H*D) 454mm*175mm*454mm
Weight (N. W.) Packaged 6.5Kg Unit
Unpackaged 4.5Kg Unit

HP VS17E
5
2.LCD Monitor Description
The LCD Monitor will contain main board, power board, key board and an audio board which house the flat panel
controllogic,brightnesscontrollogicandDDC.
The power board will provideAC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
3. Operation Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located at front of the panel.
By changing these settings, the picture can be adjusted to your personal performance.
-The power cord should be connected and insert to adaptor.
-Connect the video cable from the monitor to the computer VGAcard.
-Press the power button to turn on the monitor, the power indicator will light up to Green.
3.2 Control Buttons
-Power Button:
When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.
-Left / Right Button:
When the OSD show on screen, Left/Right Button are used to control the monitor functions. Press to switch
functions or adjust settings.And if the OSD off, Left buttons is used to automatically set the H Position, V Position,
Clock and Phase.
-Power Indicator:
Green — Power On mode.
Orange — Power Saving mode.
Blank — Power Off Mode.
Video signal, DDC
Power Board
(
Include ada
p
ter and inverter
)
Flat Panel and
CCFL backlight
Main Board
Audio board
RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
AC-IN
110V-240V
Monitor Block Diagram
Keyboard

HP VS17E
6

HP VS17E
7
3.3 Adjust the Picture
NO. Control Icons NO. Control Icons
1 Brightness 16 Clock Phase
2 Contrast 17 Power Saver
3 Auto Adjustment 18 Mode Display
4 Image Control 19 Power-On Status Display
5 Color 20 Sleep Timer
6 Custom Color 21 Basic Menu
7 Language 22 Advanced Menu
8 Management 23 Power On Recall
9 OSD Control 24 Horizontal OSD Position
10 Information 25 Vertical OSD Position
11 Factory Reset 26 OSD Timeout
12 Default Video Input 27 OSD Transparency
13 Horizontal Position 28 Volume
14 Vertical Position 29 Exit
15 Clock

HP VS17E
8
4. Input/Output Specification
4.1 Input Signal Connector
Pin Mnemonic Signal Pin Mnemonic Signal
1 RV Red Video 9 +5 V +5 V (from PC)
2 GV Green Video 10 SG Sync Ground
3 BV Blue Video 11 NC None
4 NC PC Connect detection 12 SDA DDC Data
5 GND Ground (DDC Return) 13 HS Horizontal Sync
6 RG Red GND 14 VS Vertical Sync
7 GG Green GND 15 SCL DDC Clock
8 BG Blue GND
VGA connector layout
PIN 1 PIN 5
PIN 11

HP VS17E
9
4.2 Factory Preset Display Modes
Preset
Pixel
Format
Horz Freq
(KHz)
Horz
Polarity
Vert Freq
(Hz)
Vert
Polarity
Pixel Clk
(MHz) Source
1 640 x 480 31.469 - 59.940 - 25.175 VGA
2 640 x 480 37.861 - 72.809 - 31.500 VESA
3 640 x 480 37.500 - 75.000 - 31.500 VESA
4 720 x 400 31.469 - 70.087 + 28.322 VGA
5 800 x 600 37.879 + 60.317 + 40.000 VESA
6 800 x 600 48.077 + 72.188 + 50.000 VESA
7 800 x 600 46.875 + 75.000 + 49.500 VESA
8 832 x 624 49.726 ± 74.551 ± 57.284 MAC
9 1024 x 768 48.363 - 60.004 - 65.000 VESA
10 1024 x 768 56.476 - 70.069 - 75.000 VESA
11 1024 x 768 60.023 + 75.029 + 78.750 VESA
12 1152 x 870 68.68 - 75.06 - 100.000 Mac
13 1152 x 900 71.71 - 76.05 - 105.561 Sun
14 1280 x 1024 63.98 + 60.02 + 108.000 VESA
15 1280 x 1024 79.97 + 75.02 + 135.000 VESA
4.3 Power Supply Requirements
Parameter Arameter Range
AC Input Voltage 90 to 265V
AC Input Frequency 47 to 63 Hz
Inrush Current 50A MAX AT 220VAC and 30AAT 120VAC
Leakage Current 5 mA MAX at 120VAC
Power consumption ≤37W

HP VS17E
10
5. Panel Specification
5.1GeneralFeature
Mechanical information

HP VS17E
11
5.2 Optical Characteristics

HP VS17E
12
6. Block Diagram
6.1 Monitor Exploded View
G
5 G 5
G *
G *
G
G
G*
G
G
G
G *
G
G
G *
G*
G
3
G
8 G
G *
G
G
G *
12G6063-1
G
G7
7 1
G63
.

HP VS17E
13
6.2 Software Flow Chart
1
2
N
Y
5
Y
N
10
Y
N
12
Y
N
7
Y
N
6
4
3
8
9
14
11
13
Y
N
15
Y
N16
17
19
Y
N
18

HP VS17E
14
REMARK:
1) MCU initialize.
2) Is the EEprom blank?
3) Program the EEprom by default values.
4) Get the PWM value of brightness from EEprom.
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 EEprom.
Turn on the LED and set it to green color.
Scalar initialize.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are they’re 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?

HP VS17E
15
6.3 Electrical Block Diagram
6.3.1 Scalar Board Block Diagram
MCU
MTV-512MV
(U601)
Scalar IC TSU56AK
(Include ADC, OSD)
(U401)
EEPROM
AT24C16
(U602)
EEPROM
M24C02
(U301)
H sync
V sync
RGB
DDC_CLK,
DDC_DAT
LCD Interface
(CN503)
D-Sub
Connector
(CN301)
Crystal
14.318MHz
(X401)
Key Board
Control
(CN602)
Crystal
24MHz
(Y601)

HP VS17E
16
6.3.2 Inverter / Power Board Block Diagram
CN902
DIM
EMI filter Bridge
Rectifier
and Filter
StartCircuit:
R909/R910/R931
PWM
Control IC
Transformer Rectifier
diodes
AC input
12V
ON/OFF
Control
PWM
Control IC
Feedback
Circuit
LC
Resonance Transformer MOSFET
Over
Voltage
Lamp
ON/OFF
Feedback
Circuit
Over
Voltage
Protect
5V
12V Dc to Dc

HP VS17E
17
7. Schematic
7.1 Main Board
VCPU
VLCD
VAA2
PA[0..9]
VCC1.8
B5
5.PANEL INTERFACE
VLCD
PA[0..9]
GPO[0..4]
PB[0..9]
OSP
ESP
GA[0..3]
BA[0..5]
VLCD_12V
VAA4
VLCD
PB[0..9]
VAA2
5V
VAA3
SCHEMATIC
GA[0..3]
VAA1
VLCD_12V
VAA1
BA[0..5]
B1
3.INPUT
RIN
GIN
BIN
VSYNC
GNDR
GNDG
GNDB
ST_DET1 HSYNC
SOGDDC_CLK
DDC_DAT
TXD
RXD
DDC_WP
VCC3.3
VLCD_12V
B4
2.POWER
onPanel_5V/3.3V
onBACKLITE
AdjBACKLITE
VCC3.3
VCC1.8
VAA1
VAA2
VAA3
VAA4
VLCD
VCPU
VLCD_12V
onPanel_12V
VCC5V
GND
5V
VCC5V
B2
4.SCALER
RIN
GIN
SOG
BIN
GNDR
GNDG
GNDB
HSYNC
VSYNC
CSZ
SCL
SDA
HWRESET
INT
VOLUME
AdjBACKLITE
PA[0..9]
VCC1.8
VCC3.3
VAA1
VAA2
VAA3
VAA4
AD0
AD1
AD2
AD3
PB[0..9]
GA[0..3]
BA[0..5]
ESP
GPO[0..4]
OSP
TOP
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17Monday, September 13, 2004
Title
Size Document Number Rev
Date: Sheet of
HPQ2005
ESP
5V
VCC1.8
VCC3.3
B3
6.MCU
onBACKLITE
onPANEL_5V/3.3V
SDA
INT
CSZ
DDC_DAT
ST_DET1
SCL
HWRESET
DDC_CLK
VCPU
RXD
TXD
AD0
AD1
AD2
AD3
AUDIO_SD
ROUT+1
OUT-L+
onPANEL_12V
LOUT+1
OUT-R-
OUT-R+
OUT-L-
DDC_WP
VCC5V
FOR
OSP
VAA4VAA3
B6
7.AUDIO
VOLUME
OUT-R-
OUT-R+
OUT-L+
OUT-L-
LOUT+1
ROUT+1
VCC5V
AUDIO_SD
GND
5V
GPO[0..4]
VCPU

HP VS17E
18
R208
10K 1/16W
R210
0 1/16W
C230
NC 0.47uF
+
C202
220uF/25V
R212 4.7K 1/16W
VCC3.3
VAA1
R
10K 1/16W
VAA4 4,7
C220
0.1uF
R201 4.7K 1/16W
R209
NC
C217
0.1uF
VCC5V
onPanel_12V6
VCPU 6
R214 4.7K 1/16W
VCC5V
Q203
AO3401
FB202
600 OHM
R211
10K 1/16W
VCPU 6
+
C219
220uF/25V
CN201
CONN
2
4
6
8
10
12
1
3
5
7
9
11
VCC1.8 4
VS17
Q201
PMBS3904
32
1
VCC5V
R207 4.7K 1/16W
C207
0.1uF
onBACKLITE 6
+
C209
47uF/16V
VCC5V
VAA2
H4
H8D3.5-2LX
1 2 3
4
5
6 7 8
9
1 2 3
4
5
6 7 8
9
GND 3,4,5,6,7
U202
AIC1084-33M
3
1
2
VIN
ADJ
VOUT
VCC5V+
H3
H8D3.5-2LX
1 2 3
4
5
6 7 8
9
1 2 3
4
5
6 7 8
9
VLCD 5
VS19
VLCD
VCC12V
+
C213
47uF/16V
VCC1.8
Q205
PMBS3904
32
1
VCC5V
5V
Q202
PMBS3904
32
1
R205 4.7K 1/16W
R202
10K 1/16W
GND
onPanel_5V/3.3V6
C201
0.1uF
FB201
NC
C203
0.1uF
5V
DIM
R203
1K 1/16W
VCC5V
C205
0.1uF
VCPU
VCC12V
VCC5V
C214
0.1uF
H2
H8D3.5-2LX
1 2 3
4
5
6 7 8
9
1 2 3
4
5
6 7 8
9
R216
4.7K 1/16W
VCC3.3 4,7
+
C215
47uF/16V
C212
0.1uF
GND
VCC5V+
5V
H1
H8D3.5-2LX
1 2 3
4
5
6 7 8
9
1 2 3
4
5
6 7 8
9
POWER
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AOC SCHEMATIC FOR HPQ2005
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27Thursday, November 18, 2004
Title
Size Document Number Rev
Date: Sheet of
VLCD_12V
U201 change to 1.8V
5V
D201 DIODE SCHOTTKY
Q204
PMBS3904
32
1
TO-263
VLCD_12V 5
+
C204
220uF/25V
Brightness
ON_OFF
+
C211
47uF/16V
TO-252
+
C218
10uF/16V
D202
DIODE
GND
VCC12V
VCC5V+
VCC12V
VCC12V
5V 7
Q206
AO3407
VCC5V 3,4,7
R204
10K 1/16W
C216
0.1uF
U201
AZ1117D-1.8
3 2
1
VI VO
GND
VCC3.3
C210
0.1uF
+
C208
10uF/16V
VAA2 4,7
GND
VAA3
R215
10K 1/16W
AdjBACKLITE4
VAA3 4,7
VCC5V
C
0.1uF
C206
1uF
VAA1 4,7
VAA4

HP VS17E
19
R308
10K 1/16W
C303
NC
D301
BAV99
3
1 2
DDC_CLK6
R325
75 1/16W
R307 68 1/16W
GIN 4
C304 0.047uF
GNDG 4
D303
BAV99
3
1 2
C315
0.1uF/16V
R310 1K 1/16W
R326
75 1/16W
C317
0.1uF/16V
R311 1K 1/16W VSI
D319
MLL5232B 5.6V
R301 33 1/16W
CN301
DB15
1
6
2
7
3
8
4
9
5
11
12
13
14
15 10
D320
MLL5232B 5.6V
RXD 6
PC5V
FB302 0 1/16W
D317
MLL5232B 5.6V
GNDB 4
D304
BAT54C-GS08
3
1 2
PC5V C307 0.001uF
D302
BAV99
3
1 2
VCC5V
R312 100 1/16W
VCC5V
U301
AT24C02N-10SC
1
2
3
45
6
7
8A0
A1
A2
GNDSDA
SCL
WP
VCC
FB301 0 1/16W
C310 0.047uF
RIN 4
C302
NC
R316 33 1/16W
C301
NC
C313
0.1uF
VGA_CON
FB304 150 OHM
C309 0.047uF
R329
NC
BIN 4
C314
0.1uF/16V
R319
22 1/16W
R313
2.2K 1/16W
R305 68 1/16W
Q301
PMBS3904
CE
B
DDC_DAT6
D322
MLL5232B 5.6V
D321
MLL5232B 5.6V
R327
75 1/16W
C312
220pF
D318
MLL5232B 5.6V
C316
0.1uF/16V
DDC_WP 6
VSYNC 4
R304 470 1/16W
SOG 4
INPUT
D
AOC SCHEMATIC FOR HPQ2005
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37Friday, October 22, 2004
Title
Size Document Number Rev
Date: Sheet of
DAT_DDC
D323
MLL5232B 5.6V
C308 0.047uF
R318
4.7K 1/16W
VCC5V
HSI
C311
33pF
HSYNC 4
R314
2.2K 1/16W
CLK_DDC
R309 100 1/16W
ST_DET1 6
Add 0.1uf 10-22 FOR ESD
R317
4.7K 1/16W
FB303 0 1/16W
R315 33 1/16W
C306 0.047uF
modify ddc_wp circuit
GNDR 4
TXD 6
R328
4.7K 1/16W
R303 33 1/16W
R302 33 1/16W
R306 68 1/16W
C305 0.047uF

HP VS17E
20
FB404
600 OHM
R402
4.7K 1/16W
SCL6
PA[0..9] 5
C413
0.1uF
C423
0.1uF
VCC5V
PA7
VDPLL C415
0.1uF
GA[0..3] 5
VPO
BA2
C429
1uF
PB4
FB405
600 OHM
VCC1.82
PB[0..9] 5
PA2
VPO
VAD
PB3
R401
NC
BA4
GPO4
R403 390 1/16W
AdjBACKLITE2
R405
10K 1/16W
+
C424
10uF/16V
+
C414
10uF/16V
C430
100pF
C403 22pF
SOG3
PB7
HSYNC3
GPO[0..4] 5
VCC1.8
VAD
VDVI
GPO3
AD06
PA6
C402 22pF
NC
BA1
C412
0.1uF
C411
0.1uF
R407
10K 1/16W
R406
10K 1/16W
FB402
600 OHM
RIN3
VAA3
PB1
+
C419
10uF/16V
GPO0
VDPLL
PB2
INT6
NC
VAA22,7
VAA4
PA0
AD36
Direct Bus
R404
10K 1/16W
PA9
GPO2
C410
0.1uF
R409
10K 1/16W
C408
0.1uF
C425
0.1uF
GA[0..3]
4.7K
4.7K
VAA2
PB6
X401
14.318MHz
GNDG3
VDVI
PA8
PB0
VPLL C407
0.1uF C416 0.1uF
C406
0.1uF
U401
TSU16AK-LF
63
60
61
58
62
59
57
37
38
52
66
67
69
70
71
32
72
73
74
55 35 45
3
51 11 21 84 94 104 114 126 18 87 97 117
39 56 36
2
54 42 10 20 85 95 115 127 19 86 96 105 116
33
34
108
109
110
111
112
113
98
99
100
101
102
103
88
89
90
91
92
93
16
17
22
23
24
25
8
9
12
13
14
15
124
125
128
1
4
5
118
119
120
121
75
76
83
82
81
80
79
29
28
53 65
64 48
106
107
122
123
68
40
41
43
44
46
47
49
50
30
77
78
31
6
RIN0
GIN0
SOGIN0
BIN0
RIN0M
GIN0M
BIN0M
HSYNC0
VSYNC0
REXT
REFP
REFM
CSZ
SDA
SCL
HWRESETZ
INT
PWM0
PWM1
AVDD
AVDD_MPLL
AVDD_DVI
BYPASS
AVDD_DVI
VDDP VDDP VDDP VDDP VDDP VDDP VDDP
VDDC VDDC VDDC VDDC
AVSS_DVI AVSS AVSS_MPLL
AVSS_LPLL
AVSS_PLL AVSS_DVI GNDP GNDP GNDP GNDP GNDP GNDP GNDC GNDC GNDC GNDP GNDC
XIN
XOUT
LVA2P/RA1P
LVA2M/RA1N
LVA1P/RA2P
LVA1MRA2N
LVA0P/RA3P
LVA0M/RA3N
GA1P
GA1N
GA2P
GA2N
LVA3p/GA3P
LVA3M/GA3N
BA1P
BA1N
BA2P
BA2N
BA3P
BA3N
NC/RB1P
NC/RB1N
NC/RB2P
NC/RB2N
NC/RB3P
NC/RB3N
NC/GB1P
NC/GB1N
NC/GB2P
NC/GB2N
NC/GB3P
NC/GB3N
LVB1P/NC/BB1P
LVB1M/NC/BB1N
LVB0P/NC/BB2P
LVB0M/NC/BB2N
NC/BB3P
NC/BB3N
LVB3P/CLKAP
LVB3M/CLKAN
LVBCKMP/NC/CLKBP
LVBCKP/NC/CLKBN
NC/ESP
OSP
GPO0
GPO1
GPO2
GPO3
GPO4
DDC1_CLK/GPO8
DDC1_DAT/GPO7
AVDD_PLL
AVDD
AVSS AVSS_DVI
LVACKP/NC
LVACKM/NC
LVB2P/NC
LVB2M/NC
AVSS
R+
R-
G+
G-
B+
B-
CK+
CK-
AD0
AD1
AD2
AD3
BUS TYPE
PA4
VCC3.32,7
PA[0..9]
VAA32,7
VCC5V
CSZ6
C417
0.1uF
VPLL
BIN3
VCC3.3
GPO[0..4]
VAA12,7
VSYNC3
BA[0..5]
OSP 5
C428
0.1uF
C418
0.1uF
R401
VDD
ESP
Q401
PMBS3904
32
1
+
C422
10uF/16V
R402
PB8
R410 4.7K 1/16W
VDVI
GA1
SCALER
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47Monday, December 06, 2004
Title
Size Document Number Rev
Date: Sheet of
BA[0..5] 5
GA0
FB403
600 OHM
GPO1
GIN3
R408
1K 1/16W
GA2
BA0
VAA42,7
AD26
VDD
GA3
OSP
GNDB3
PA1
PB[0..9]
FB401
600 OHM
C420
0.1uF
C409
0.1uF
+
C427
10uF/16V
VOLUME7
C404 0.1uF
C401
0.1uF
BA3
PA3
+
C405
10uF/16V
GNDR3
PB9
SDA6 HWRESET6
FB406
600 OHM
VCC3.3
PA5
ESP 5
AD16
PB5
VAA1
C421
0.1uF
C426
0.1uF
3-WIRE
BA5