Genius VideoCAM NB 300 User manual

Service Manual
VideoCAM NB300

Service Manual VideoCAM NB300
Table of Contents
1. Introduction...................................................................................................................................3
A. Features................................................................................................................................3
B. System Requirements...........................................................................................................3
C. Function Block.....................................................................................................................3
2. Removal and Replacement............................................................................................................4
3. Troubleshooting Guide..................................................................................................................5
4. Testing Procedures........................................................................................................................6
5. Parts List ....................................................................................................................................14
6. Tools...........................................................................................................................................14
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1. Introduction
A.Features
 Up to 1280X960 pixel in digital camera mode
 Built-in snapshot button
 USB 1.1 interface
B. System Requirements
 Pentium 200MHZ MMX CPU or higher and at least 128MB RAM
 5MB available hard disk space
 Video card with 2MB of RAM for minimum
 4X CD-ROM Drive
 Available one USB port
C.Function Block
Shutter key
12MHZ Crystal
Digital Dual Mode
Camera Processor
SN9C102
MI-0343
1/4”
CMOS Sensor
Power
Circuit
Host USB
Connector
Lens 1P
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2. Removal and Replacement
AS SAME AS THE VideoCam NB.
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3. Troubleshooting Guide
Problem Solution
No Power U4 NG , Cable NG
Image is Blur Check the Lens
Can not connect to PC U2, Y1 NG
Can Not Capture Image U2, U3 NG
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4. Testing Procedures
Replace Y1
T
CHECK +5V Replace Cable
CHECK 3.3V Replace U4
CHECK VSYNC
Signal
T
CHECK HSYNC
Signal
Replace U2
Replace U2
T
END
CHECK
12MHZ
START
F
F
T
F
T
F
F
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 CHECK Y1 12MHZ
Y1
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 CHECK U4 Pin 2 +5V
U4 Pin 2
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 CHECK U4 Pin 3 +3.3V
U4 Pin 3
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 CHECK VSYNC Signal
U3 Pin 6
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 CHECK HSYNC Signal
U3 Pin 7
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 DN Signal
U2 Pin 15
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 DPSignal
U2 Pin 16
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5. Parts List
Item Part number Description Position
1 10800053000 Crystal 12MHZ Y1
2 15160621000 Cable
3 11310009000 Chip regulator U4
4 11300491000 IC SN9C102 U2
5 11300497000 IC MI-0343 U3
6. Tools
 Screwdriver Cross
 Oscilloscope
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