Sharp LC-70UD1U - Page 64

LC-70UD1U
6 – 20
No SD Card connection
If SD card is put, does it change to the screen of SD/USB Media?
SD card is FAT / FAT32 format, and put in a JPEG file.
NO
YES
Is the thumbnail of JPEG displayed?
NO
Check the line between IC951 and SC951 os SD card bord.
Moreover, check whether there is any foreign substance into SC951.
Is the power supply pin (1, 19, 23, 4) of IC951 of SD card board about 3.3V?
NO
YES
Is 21 pin (SD_CDZ) of IC951 of SD card board 0V?
YES
NO
Check the line from 10 pin (SW_CD) of SC951 of SD card board to 21 pin (SD_CDZ) of IC951.
Are 3 pin and 4 pin of P951 of SD card board (USB-, USB+) normal?
NO
YES
Check the line from 3 pin and 4pin of P951 of SD card board (USB-, USB+) to 2 pin and 3 pin of IC951 (DM, DP).
Furthermore, check around IC951 whether it is satisfactory.
Are 12 pin and 13 pin of IC9505 of a MAIN board (DM3, DP3) normal?
NO
YES
Check the harness between a MAIN board and SD card.
If there is no problem, check the line from 6 pin and 7 pin of IC9505 of a MAIN board (DM2, DP2) to 3 pin and 4 pin of
P951 of SD card board (USB-, USB+).
Check the circumference of IC9505 of a MAIN board, and the line from D36 and D37 (USB_D 1P, USB_D 1N) of IC3301 to 1 pin
and 2 pin (DM0, DP0) of IC9505.
Are 3 pin and 4 pin of IC953 of SD card board (CE,Vin) normal?
NO
YES
Check around IC953 whether it is satisfactory.
Is 6 pin of CN9501 of MAIN board (SD_VBUS) about 4V?
NO
YES
Check the harness between a MAIN board and SD card.
Is 6 pin of IC9506 of MAIN board (VDD) about 5V?
YES
NO
Check the circumference of IC9607 of a MAIN board, and the U+5V power supply line of IC9607 to IC9506.
Is 4 pin of IC9506 of MAIN board (EN) about 5V?
NO
YES
Check the circumference of IC9506.
Check mounting of a MAIN board of R9561.