Sharp LC-32LE340E, Service Manual

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LC-32LE340/343
LC-40LE340/343
TABLE OF CONTENTS
i SPECIFICATIONS ....................................................................................................................... 4
ii IMPORTANT SERVICE SAFETY PRECAUTIONS ..................................................................... 6
iii OPERATION MANUAL .............................................................................................................. 9
iv DIMENSIONS ............................................................................................................................ 18
1. INTRODUCTION ........................................................................................................................ 20
2. TUNER ...................................................................................................................................... 22
3. AUDIO AMPLIFIER STAGES ..................................................................................................... 24
A.. MAIN AMPLIFIER .......................................................................................................... 24
B. LINE-OUT and HEAD-PHONE AMPLIFIER STAGE (CS3813N) .................................. 27
C. SUBWOOFER AMPLIFIER STAGE ( TPA3112) ........................................................ 28
4. POWER STAGE ......................................................................................................................... 30
5. MICROCONTROLLER ( Broadcom ) ........................................................................................ 37
6. VIDEO BACK-END PROCESSOR (Trident) ............................................................................. 40
7. FPGA (Spartan-3E) ................................................................................................................... 41
8. 1Gb F-die DDR2-1066 SDRAM (U41-U42-U8-U9) .................................................................... 43
9. 32M x 16 bit DDRII Synchronous DRAM ( U28-U29) ................................................................ 45
10. 4Gbit NAND Flash Memory (U35) ............................................................................................. 47
11. 128Mbit NAND Flas Memory (U17) ............................................................................................ 49
12. USB Interface ............................................................................................................................. 51
13. CI Interface ................................................................................................................................. 51
14. DVB-C/T2 Demodulator .............................................................................................................. 52
15. LOW POWER & CEC MICROCONTROLLER .......................................................................... 59
16. HDMI SWITCH ......................................................................................................................... 60
17. LNB Supply ans control IC ......................................................................................................... 66
18. SOFTWARE UPDATE ............................................................................................................... 67
19. TROUBLESHOOTING ............................................................................................................... 68
A. No Backlight Problem ..................................................................................................... 68
B. CI Module Problem ......................................................................................................... 70
C. Staying in Stand-by Mode ............................................................................................. 71
D. IR Problem ..................................................................................................................... 72
E. Keypad Touchpad Problems .......................................................................................... 72
F. USB Problems ................................................................................................................ 73
G. No sound Problem ......................................................................................................... 73
H. Standby On/Off Problem ............................................................................................... 73
I. No Signal Problem .......................................................................................................... 74
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LC-32LE340/343
LC-40LE340/343