Sharp LC-22DV510E - USB Problems

Sharp LC-22DV510E

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83

LC-22DV510

LC-24DV510

26.6. USB Problems

Problem: USB is not working or no USB Detection.

Check USB Supply, It should be nearly 5V. Also USB Enable should be logic high.

26.6 USB Problems

Table of Contents

Default Chapter2
- Table of Contents2
- Electrical Specifications5
- Specifications5
- Safety Notice7
- Important Service Safety Precaution7
- End of Life Disposal9
- Operation Manual10
- Dimensions16
- Dimensional Drawings17
1 Introduction18
- General Block Diagram19
- MB60 Placement of Blocks20
2 Tuner(Tu102)21
- Circuit Descriptions21
- Features of DTOS403LH122X22
- General Description of Samsung DTOS403LH122X22
- Pinning23
3 SAW FILTER - Audio - Epcos K9656M(Z101)24
- Standard24
- Features24
- Pin Configuration24
- Frequency Response25
4 SAW FILTER - Video - Epcos K3958M(Z102)26
- Standard26
- Features26
- Pin Configuration26
- Frequency Response27
5 Audio Amplifier Stage with Azad2102(U163, U164)28
- General Description28
- Features28
- Absolute Ratings29
- Electrical Characteristics29
- Operating Specifications30
- Pinning31
6 Audio Amplifier Stage with Tpa3113(U168)32
- General Description32
- Features32
- Absolute Ratings32
- Electrical Characteristics32
- Operating Specifications33
- Pinning33
7 Power Stage34
- Short CCT Protection Circuit36
- Power Management39
8 Microcontroller - Mstar(U157)39
- General Description39
- General Features39
- MSTAR Block Diagram44
- Reset Circuit44
101 CI Interface45
- Block Diagram45
- CI Interface Power Switch45
10 Usb Interface46
11 Ddr2 Sdram 8M × 4 Banks × 16 Bit (W9751G6Jb) (U154, U155)47
- General Description47
- Features47
- Electrical Characteristics47
- Pinning48
12 Scaler and Lvds Sockets50
- LVDS Sockets Block Diagram50
- Panel Supply Switch Circuit50
13 Nand Flash Memory - Mx25L1005 (U158)52
- General Description52
- Features52
- Absolute Maximum Ratings52
- Pinning52
14 Nand Flash Memory - Nand512Xxa2C (U162)53
- General Description53
- Features53
- Pinning54
15 USB2.0 to Fast Ethernet - ASIX AX88X72A (U171)55
- General Description55
- Features55
- Block Diagram56
- Pinning56
16 Lm1117(U175, U180, U181)57
- General Description57
- Features57
- Applications57
- Absolute Maximum Ratings57
- Pinning57
17 Mp2012 (U176)58
- General Description58
- Features58
- Pinning58
18 Rta8283A (U23, U173)59
- General Description59
- Features59
- Pinning60
19 Mp1583 (U174)61
- General Description61
- Features61
- Pinning61
20 Fdc64262
- General Description62
- Features62
- Pinning62
21 Fdc604P63
- General Description63
- Features63
- Pinning63
22 Connectors64
- Scart (Sc1)64
- Hdmi (Cn707,Cn708)64
- Vga (Cn132)65
23 Service Menu Settings66
- Video Settings67
- Audio Settings67
- Options68
- Tuning Settings69
- Source Settings69
- Diagnostic70
- USB Operations70
24 Software Update71
25 Introduction for DVD Option72
26 Troubleshooting77
- No Backlight Problem77
- CI Module Problem79
- Led Blinking Problem80
- IR Problem81
- Keypad Touchpad Problems82
- USB Problems83
- No Sound Problem84
- No Sound Problem at Headphone84
- Standby On/Off Problem84
- DVD Problems85
- No Signal Problem85
27 Overall Wiring Diagram87
28 Schematic Diagrams89
29 Printed Wiring Board100
30 Replacement Parts Listing101
31 Cabinet and Mechanical Parts Listing119
- Sharp Corporation124

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