Genius TVGo DVB-T01 User manual

Service Manual
TVGo DVB-T01
Version: 1.0

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Contents
TVGo DVB-T01
Chapter 1. INTRODUCTION…………………………………………………………………….……3
a. Hardware
b. Operating System
c. Available hard disk space
d. Block Diagram
Chapter 2. Removal and Replacement……………………………………………………..……..….…4
a. Remove mattress protector on .the reverse side………………………………..…………...….4
b. Remove screws……………………………………………………………… …….……….....5
c. Open the case……………………………………………………………………. ……………6
d. Remove PCB from case………………………………………………………..………………7
Chapter 3. Testing Procedures……………………………………………………………………….....8
a. Testing flow chart………………………………………………………………………………8
b. Check USB Power……………………………………………………………………………..10
c. Check System 2.5V………………………………… ……………………………………....11
d. Check System 3.3V……………………………………………………………………………12
e. Check DVB 3.3V………………………………………………………………………………13
f. Check DVB 1.8V………………………………………………………………………………14
g. Check Tuner 5V………………………………………………………………………………..15
h. Check Y1 12MHz……………………………………………………………………………....17
i. Check T1 DVB Clock…………………………………………………………………………..19
j. Check Device on the Windows Device Manage………………………………………………..21
Chapter 4. Troubleshooting Guide………………………………………………………………………23
Chapter 5. Parts list……………………………………………...………………………………………24

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Chapter 1. INTRODUCTION
a. Hardware
zPC 586 above
zConnection port : USB
b. Operating System
zMicrosoft Windows 2000 SP4 or Windows XP SP1/SP2
c. Available hard disk space
z100MB used to install the driver and software
d. Block Diagram
CIR Control
M9206
PC
DVB Tuner with
demodulator
USB
MPEG2
Transport Stream
Crystal 12Mhz
5V_SYS 5V_Tuner
2.5V SYS
5V Step up
DC/DC(AAT1102)
3.3V REG (AIC
1117-33)
3.3V REG (AIC
1117-33)
2.5V REG (AIC
1117-25)
3.3V SYS
3.3V DVB
1.8V REG (AIC
1117-18) 1.8V DVB
3.3V SYS2.5V SYS
3.3V DVB1.8V DVB
5V_Tuner
POWER Distribution

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Chapter 2. Removal and Replacement
a. Remove mattress protector on the reverse side.
Remove mattress protector

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b. Remove screws
Remove screws

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c. Open the case

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d. Remove PCB from case

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Chapter 3. Testing Procedures
a. Testing flow chart
START
Check USB Power
4.5~5.5V CN2
Pin 1
A
Check U6 Pin 2
2.5V
Check U7 Pin 2
System 3.3V
Check U3 Pin 2
DVB 3.3V
Check PC USB Port
Replace U6
Replace U7
Replace U3
T
T
T
T
F
F
F
F

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A
Check Y1 Pin 1,3
12MHz
Check T1 Pin 12
DVB Clock
Check Tuner
Pin 3,4
5V
Check U4 Pin 2
DVB 1.8V
Replace U4
Replace U5
Replace Y1
Replace T1
T
F
T
F
T
F
T
F
T
END
Check Windows
Device Manage
Replace U2
F

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.Check USB Powerb
Check USB Power 4.5~5.5V CN2 Pin 1

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c. Check 2.5V
Check U6 Pin 2 2.5V

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d. Check System 3.3V
Check System U7 Pin 2 3.3V

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e. Check DVB 3.3V
Check DVB 3.3V U3 Pin 2

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f. Check DVB 1.8V
Check DVB 1.8V U4 Pin 2

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g. Check Tuner 5V
Check Tuner Pin 3,4 5V

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Replace U5

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h. Check Y1 12MHz
Check Y1 Pin1 or Pin3 12MHz
Please check Y1 frequency is
12MHz

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Replace Y1

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i. Check T1 DVB Clock
Check T1 Pin12 DVB Clock

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Check Pin12 DVB Clock frequency must < 60MHz.
NOTE: Different country, The DVB clock will get
different frequency.
Replace T1