LC-46XL2E (serv.man4). Troubleshooting Table - Sharp TV Service Manual (repair manual). Page 17

LC-42XL2E/S/RU, LC-46XL2E/S/RU, LC-46X20E/S/RU, LC-52XL2E/S/RU, LC-52X20E/S/RU

4 – 17

                                             
Does not the picture of the HDMI signal input to EXT5/6 go out?

MAIN UNIT:                          
EXT5
Is the HDMI detection function output from pin (19) of the HDMI 
terminal (SC1501) normal? 

NO

EXT5
Check between SC1501and IC1507(HDMI_SW)of pin(16).
(IC1506, etc.)

EXT6
Is the HDMI detection function output from pin (19) of the HDMI 
terminal (SC1502) normal? 

NO

EXT6
Check between SC1502 and IC1507(HDMI_SW) of pin(36).
(IC1506, etc.)

YES

                                             

YES

Check the connection and setup with the external HDMI devices.

EXT5
Is EDID data pin (6)/SCL, pin (5)/SDA of IC1501 (EEPROM) 
accessed, and is it read from pin (15), (16) of a HDMI terminal 
(SC1501) pin(15), (16)?

NO

Is access possible in the re-writing or exchange of EDID data of 
IC1501?

NO

Check the circumference circuit of SC1501, IC1501and IC1507.

EXT6
Is EDID data pin (6)/SCL, pin (5)/SDA of IC1502 (EEPROM) 
accessed, and is it read from pin (15), (16) of a HDMI terminal 
(SC1501) pin (15), (16)?

NO

Is access possible in the re-writing or exchange of EDID data of 
IC1502?

NO

Check the circumference circuit of SC1501, IC1501and IC1507.

YES

EXT5
Is TMDS signal input into pin (19, 18)/TMDS2_CLKP/N

±, 

(22, 21)/TMDS2_D0P/N, (25, 24)/TMDS2_D1P/N, (28, 27)/
TMDS2_D2P/N of IC1507 from SC1501?

NO

Check the line between SC1501 and IC1507.

EXT6
Is TMDS signal input into pin (39, 38)/TMDS1_CLKP/N

±, 42, 41)/

TMDS1_D0P/N, (45, 44)/TMDS1_D1P/N, (48, 47)/TMDS1_D2P/
N of IC1507 from SC1502?

NO

Check the line between SC1502 and IC1507.

YES

Is each signal output from pin (10, 11)/TMDS_CLKP/N, (7, 8)/
TMDS_D0P/N, (4, 5)/TMDS_D1P/N, (1, 2)/TMDS_D2P/N, (77, 
78)/SDA_SINK/SCL_SINK, (79)/DDC5VOR_A of IC1507?

NO

Is the control signal of IC1507 and IC9101 (CPLD) normal?
(HDMI_SW_INT, HDMI_RST, etc.)

YES

Is each signal of IC3301 (VIDEO_PROCESSOR) pin (L1, L2)/TMDS_CLKP/N, (M1, M2)/TMDS_D0P/N, (N1, N2)/TMDS_D1P/N, (P1, P2)/
TMDS_D2P/N, (T11, U11)/SDA_SINK/SCL_SINK, (T10)/DDC5VOR_A input?

YES

NO

Refer to “The picture doesn't appear in all modes.”

Check the line between IC1507 and IC3301.