PG-C45X (serv.man11). Troubleshooting table - Sharp Projector Service Manual (repair manual). Page 9

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37
PG-C45X
TROUBLE SHOOTING TABLE for PC I/F UNIT (Continued)
Is the STEP signal as specified?
Select the STEP signal.
Is the onscreen display color 
normal?
No problem with the onscreen 
display.
In the process mode, make the 
LCD line adjustment.
Is the user menu displayed 
onscreen normally by the MENU 
key?
Is the signal compatible with the 
STEP signal outputted at TL106 
thru TL111?
Enter the process menu and select 
PATTERN. Then select the COLOR 
pattern.
No
Yes
No
Yes
Go to "Checking of GA4 and Its 
Periphery".
Yes
Rewrite the onscreen display data.
No
Checking of Onscreen Display
0
Rewrite the onscreen display data.
Yes
IC8025 is defective.
No
0
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