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Service Manual
VideoCAM WEB V2/V3
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Table of Contents
VideoCAM WEB V2/V3.............................................................................................................0
Chapter 1. INTRODUCTION...........................................................................................................2
a. Hardware...................................................................................................................................2
b. Software....................................................................................................................................2
c. Block Diagram ..........................................................................................................................2
Chapter 2. Testing Procedures ..........................................................................................................3
a. Testing flow chart.........................................................................................................................3
b. Check VCC +5V..........................................................................................................................5
c. Check U4 Pin 1 +3.3V .................................................................................................................6
d. Check U3 Pin1 +2.5V...............................................................................................................7
e. Check U1 Pin13 CLKIN signal....................................................................................................8
f. Check U1 Pin14 CLKOUT signal………………………………………………………..…….. 9
g. Check U1 Pin42 CSCLK signal….……………………………………….…………..…........ 10
h. Check U1 Pin39,40 VS&HS YNC signal...…………………………………………………....11
i. Check U2 Pin19 CS_CLKsignal……..……………………………………………………...12
Chapter 3. Troubleshooting Guide..................................................................................................13
Chapter 4. Removal and Replacement............................................................................................14
Chapter 5. Parts list.........................................................................................................................15
Chapter 6. Tools..............................................................................................................................16
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Chapter 1. INTRODUCTION
a. Hardware
♦ PIII 800 MHz or higher above
♦ Connection port ： USB
b. Software
♦ Win98 above
♦ AP of VideoCAM WEB V2/V3
c. Block Diagram
USB
Interface
ZC0301
EEPROM
AT93 C46C
SOP-8P
5V Power
CONVERT
TO +3.3V
Snapshoot
button
TAS5130
X'TAL
48MHZ
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Chapter 2. Testing Procedures
a. Testing flow chart
T
T
T
REPLACE CABLE
REPLACE U4
F
F
Check +2.5V
Check U1 Pin13
CLKIN signal
F
Check U1 Pin14
CLKOUT signal
REPLACE U1
T
REPLACE U1,Y1
REPLACE U3
Check +3.3V.
Check VCC
+5V
STAR T
F
F
T
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T
Check U1 Pin42
CSCLK signal
REPLACE U1
Check U1 Pin39,40
VS&HS YNC signal
T
T
Check U2 Pin19
CS_CLK signal
REPLACE U2
F
REPLACE U1
END
T
F
F
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b. Check VCC +5V
J1 PIN1
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c. Check U4 Pin 1 +3.3V
U4.PIN 1
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d. Check U3 Pin1 +2.5V
U3 PIN1
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e. Check U1 Pin13 CLKIN signal
U1 PIN13
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f. Check U1 Pin14 CLKOUT signal
U1 PIN14
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g. Check U1 Pin42 CSCLK signal
U1 PIN42
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h.Check U1 Pin39,40 VS&HS YNC signal
PIN 39 VSYNC SIGNAL
PIN 40 HSYNC SIGNAL
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U1 PIN40 U1 PIN39
i.Check U2 Pin19 CS_CLK signal
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U2 PIN19
Chapter 3. Troubleshooting Guide
Problems Condition Probable Reasons Solutions
1. no conection
with VideoCAM
1. AP couldn’t work 1. PCB defect Change all the parts
below
1. U1
2. U2
3. U3
4. U4
5. CABLE
6. Y1
2. Button couldn’t
work
1.Press button no respond 1. Tag SW NG 1. Change Tag SW
3. Image bad 1. no image
2. color is bad
3. noise
4. PCB defect Change all the parts
below
1. U1
2. U2
3. Y1
4. LED Unlight 1.LED couldn’t shine 1.LED fail 1.Change LED
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Chapter 4. Removal and Replacement
Step Description Picture
1. finished
products
2. Loose screws Using screwdriver to loose screw and
take apart the base from the globe.
3. Take apart
cover of left
Using two palm to loose cover of left.
4. Take apart
button
You can take apart the button from
the cover directly.
5. Take apart
PCB
You can take apart the PCB from the
cover directly.
The PCB is the most important part
of VideoCAM.
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Chapter 5. Parts list
Description Parts number Description Parts number
U1 102100030101 TACK SW 300104005902
U2
102100513000(V2)
102100513001(V3)
LED 201400200200
U3 101900013301 Y1 48MHz 101514800000
U4 101900010000 CABLE 300113005901
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Chapter 6. Tools
1. Screwdriver cross
2. Oscilloscope
3. Soldering-iron set
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