45
SC-27
5
6
7
8
5
6
7
8
A
B
C
D
E
F
Step 5-2: Component IN (at 480i), HDMI OUT
Step 6: S IN, HDMI OUT
C
N
1251 (Pin 11)
Is the
voltage "H"?
N
o
Yes
SDET
Check C
N
1251 and diagnose
the COMPO
N
E
N
T Assy.
C
N
1253 (Pin 20
Is there a
luminance
signal?
N
o
Yes
A_
VV
YI
N
Check C
N
1253 and diagnose
the COMPO
N
E
N
T Assy.
IC1701 (Pins 34,46) (side B)
Are there
color and luminance
signals?
N
o
Yes
A_
VV
YI
N
, A_
V
SCI
N
Check the soldering between
IC1701 and C
N
1251, C
N
1253
and its peripheral circuits.
Perform the same check items up to those
for Q1151, Q1155 and Q1157 of Step 5-1.
C
N
1253 (Pin 1
8
)
Is there a
color signal
?
N
o
Yes
A_
V
SCI
N
Check C
N
1253 and diagnose
the COMPO
N
E
N
T Assy.
C
D
To Step 7
C
IC1
8
01 (Pins 11-13),
IC1
8
02, IC1
8
03 (Pins 11-1
8
),
IC1
8
04 (Pin 4)
Are the
signals output?
N
o
Yes
PHSY
N
K, P
V
SY
N
K, PDE
P**
PCLK
Check IC1
8
01 to IC1
8
04 and its
peripheral circuits.
IC
8
00 (through hole)
(Pins E13,D13,E12,D12,E11,
D11,E10,D10,D15) (side B)
Are there
signals?
Are there
signals?
N
o
Yes
Yes
V
ID0-7,
V
ICLK
Check IC1
8
05 and IC1
8
06 and its
peripheral circuits.
Check the soldering.
Check IC
8
00 and its peripheral
circuits. Check the soldering.
R
8
72-R
8
75,R
8
7
8
(side B),
R
8
79,R
88
4-R
88
7
N
o
Yes
V
OD0-7,
V
OCLK
Check IC1701 and its peripheral
circuits. Check the soldering.
IC1
8
05 (Pins 2-9) (side B)
IC1
8
06 (Pin 2) (side B)
Are the
signals output?
N
o
V
DQ
V
DOCLK
Replace the DIGITAL MAI
N
Assy.
To Step 6
B
Step 7: COMPOSITE IN, HDMI OUT
C
N
1253 (Pin 20)
Is there a
signal?
N
o
Yes
A_
VV
YI
N
Check C
N
1253 and diagnose
the COMPO
N
E
N
T Assy.
IC1701 (Pin 36) (side B)
Is there a
signal?
N
o
Yes
A_
VV
YI
N
Check the soldering between
IC1701 and C
N
1253 and its
peripheral circuits.
To Step
8
C