Sharp LC-32WD1E/S/RU Service Manual page 65

LC-32WD1E/S/RU, LC-37WD1E/S/RU, LC-42WD1E/S/RU, and LC-32/37/42WT1E
The unit does not enter the DTV mode or the DVT menu
does not appear
Does LED H1101 flash on-off?
Is 12V_DVB supplied to D1006-8
Check voltages:
+5VD on D1006-1
+3V3D on D1005-5
+2V5D on D1002-5
+1V2D on D1003-5
+1VD on D004-5
Do G1101 and G1001 oscillate?
Check +5V_tuner on U011-7
Is pin D016-13 high level? (I2C select)
Check I2C data/clk on tuner pins U011-4 and U011-5
Check D1001 (demod) and D1101 periferal circuits
no
yes
yes
yes
yes
yes
yes
SW is running, check "No video output on DTV"
yes
check if 12V is on R0978 and R08979. If not, PSU
no
check circuit of corresponding DC/DC of LDO
no
Check periferal circuits of G1101and G1001
no
Check periferal circuits of D0911
no
Check circuit of D018 (inverter) and D1410 (Atmel)
no
Check D1001 (demod) and D1101-4 and D1101-5
no
6-34
problem