34
YES
YES
YES
No sound from external input devices (3)
Does not the sound of the audio signal input to USB go out?
YES
NO
Is USB stick audio format correct?
Change to correct mp3 format
MAIN
Is the USB +5V Q7105 sent to pin (1) of CN1104?
Is the USB con (CN1104) signal properly sent to
pin (233) (USB_DM0) and pin (234) (USB DP0) of
IC U2102?
Refer to “No sound output in all modes”.
NO
NO
Check the connection to Q7105 and the external
input device.
Check the line between CN1104 and IC2102
Summary of Contents for Aquos LC-39LE440U
Page 1: ...SERVICE MANUAL LED COLOR TELEVISION MODEL LC 39LE440U LC 50LE440U ...
Page 3: ...2 ...
Page 4: ...3 ...
Page 5: ...4 CHAPTER 1 OPERATION MANUAL 1 SPECIFICATIONS ...
Page 11: ...10 Remove the REAR COVER Assy SOP 1 2 ...
Page 12: ...11 3 4 ...
Page 15: ...14 4 Remove the 1screws Detach the Key Pad ASSY as Fig 12 Fig 12 ...
Page 53: ...52 3 WIRING DIAGRAM ...
Page 55: ...54 BOTTOM LC 39LE440U LC 50LE440U ...
Page 56: ...55 2 POWER SCHEMATIC DIAGRAM POWER BOARD WITH TOP BOTTOM VIEW Top Layer ...
Page 57: ...56 Bottom Layer ...
Page 58: ...57 3 KEY UNIT PRINTED WIRING BOARD 4 IR UNIT PRINTED WIRING BOARD ...
Page 59: ...58 CHAPTER 8 SCHEMATIC DIAGRAM 1 MAIN SCHEMATIC DIAGRAM 01 System POWER ...
Page 60: ...59 02 MT5389 ...
Page 61: ...60 03 DDR3 DRAM Flash ...
Page 62: ...61 04 Peripheral IR Keypad ESD ...
Page 63: ...62 05 HDMI ...
Page 64: ...63 06 VGA RS 232 USB ...
Page 65: ...64 07 YPbPr ...
Page 66: ...65 08 Audio amp ...
Page 67: ...66 09 Headphone line out SPDIF ...
Page 68: ...67 10 LVDS 11 Tuner ...
Page 70: ...69 2 Standby Control DC DC ACD Circuit fig 8 Fig 8 Fig 9 ...
Page 80: ...79 2 CABINET PARTS LC 39LE440U ...
Page 81: ...80 ...
Page 82: ...81 LC 50LE440U ...
Page 83: ...82 ...
Page 85: ...84 4 PACKING PARTS LC 39LE440U 场 爵 ふ 琌 础 玂 腞 纒 1 1 狾 郴 ノ 玂 腞 纒 8ㄓ 溃 ňゎ 笲 块 硚 い オ 禲 の 玂 臔 辊 跑 ...
Page 87: ...86 LC 50LE440U ...