Sharp XG-PH70X Service Manual page 47

Checking the Main unit.
Check output sync signal of input 1 and 2.
Check input sync signal circuits.
Are there any sync signal at pin (2) to "V-sync" and pin (5) to
"H-sync" of IC3001 input?
YES
Are there any sync signal at pin (6) to "V-sync" & pm (3) to "H-
sync" of IC3001 output?
YES
CN3001 is not stable or breakdown.
Checking the Terminal unit.
Check INPUT2 sync signal input.
Check BNC RGB input sync signal circuits.
Are there any sync signal at pin (11) to "V-sync" and pin (13) to
"H-sync" of IC3005 input?
YES
Are there any sync signal at pin (5) to "V-sync" and pin (2) to
"H-sync" of IC3002 input?
YES
Are there any sync signal at pm (3) to "V-sync" & pin (6) to "H-
sync" of IC3002 output?
YES
CN3001 is not stable or breakdown.
XG-PH70X/XG-PH70X-N (1st. Edition)
NO Check IC3001 and its peripheral circuits.
NO IC3001 is breakdown.
NO Check IC3005 and its peripheral circuits.
NO IC3005 are breakdown.
NO Check IC3002 and its peripheral circuits.
4 – 5