Service Modes, Error Codes, and Fault Finding
5.
DDC reading
Figure 5-1
8
DDC reading
No
No
Ye
s
Ye
s
Ye
s
S
t
a
rt
An
a
log DDC OK?
Su
pport DDC1/2B
1. VGA c
ab
le ok?
2. Check
s
ign
a
l (U6 to PIN5, 6)
3
. Check U6- PIN
8
5 V
4. I
s
inp
u
t
s
ign
a
l compli
a
nt to protocol?
HDMI DDC OK?
Su
pport DDC1/2B
1. HDMI c
ab
le ok?
2. Check
s
ign
a
l (U15 to Pin5, 6)
3
. Check
s
ign
a
l (U16 to Pin5, 6)
4. I
s
inp
u
t
s
ign
a
l compli
a
nt to protocol?
END
1
8
9
3
0_220_100
3
10.ep
s
100
3
10
