XG-P10XE (serv.man2). Service Manual text - Page 1-47 - Sharp Projector Service Manual (repair manual). Page 37

Are there signal inputs at 
SC1404, SC1405, SC1501 and 
SC1502? 
Are voltages applied to EA 
connectors and SC8404, 
SC8405 and SC8502?

Check IC2101, IC2202, 
IC2302 and their peripheral 
circuits.

Are there signal outputs at
pins (17) of IC2102, IC2202, 
IC2302?

Are there signal inputs at pin 
(47) of IC1101, IC1102, 
IC1201, IC1202, IC1301 and 
IC1302?

Check IC1101,IC1201,IC1301   
and their peripheral circuits.

Are there signal outputs at pins 
(17), (19), (21), (27), (29) and 
(31) of IC1101, IC1102, 
IC1201, IC1202, IC1301 and 
IC1302?

If there is no signal input at 
pins (15) and (30) of  
SC1101, SC1102 and 
SC1103, check IC1603, 
IC1601 and their 
peripheral circuits.

If there is no signal input at 
pins (1) and (31) of  SC1101, 
SC1102 and SC1103, check 
the switching circuit and 
amplifier circuit of IC1101, 
IC1201, IC1301, IC1102, 
IC1202, IC1302 and their 
peripheral circuits.

Are there signal inputs at 
SC1101, SC1201 and 
SC1301?

Check IC1611, IC1612, 
IC1613, IC1615 and their 
peripheral circuits.

Check the R, G and B panels.

If there is no signal at EA 
connector or SC8404, SC8405 
and SC8502, go to Checking 
the power unitblock.

If there is no signal at SC8404 
and SC8405, go to "Trouble 
shooting table for PC I/F unit".

If there is no signal at P801 
and P802, go to the video 
system block. 

Check IC2102, IC2202, 
IC2302 and their peripheral 
circuits.