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1
A
DVC ON, Analog IN, OUT
Step 8: COMPONENT IN
COMPONENT OUT
Note: When the connection is Composite S OUT, refer to the
diagnose of IC800 and later in steps 9 and 10.
Perform the same check items up to
those for Q1151, Q1155 and Q1157 of Step 5-1.
IC1805 (Pins 2-9),
IC1806 (Pin 2) (side B)
B
No
Are there
signals?
Yes
IC800 (through hole)
(Pins E13,D13,E12,D12,E11,
D11,E10,D10,D15) (side B)
C
No
Are there
signals?
Yes
R1214
R1219
R1224
No
Are there
signals?
D
Yes
Check Q1202 and its peripheral circuits.
Check Q1203 and its peripheral circuits.
Check Q1204 and its peripheral circuits.
No
Are there
signals?
E
Yes
CN1253 (Pin 2)
CN1253 (Pin 4)
CN1253 (Pin 6)
No
Are there
signals?
Yes
F
Diagnose the COMPONENT Assy.
48
1
2
VDQ**
VDOCLK
Check IC1701 and its peripheral
circuits.
VID0-7, VICLK
Check IC1805, IC1806 and its
peripheral circuits.
A_VCYOUT_EM
A_VCBOUT_EM
A_VCROUT_EM
Check IC800 and its peripheral
circuits. Check the soldering.
NG
Replace the DIGITAL MAIN Assy.
A_VCYOUT
A_VCBOUT
A_VCROUT
Replace Q1202, Q1203, Q1204
and its peripheral parts.
A_VCYOUT
A_VCBOUT
A_VCROUT
Check the soldering and
connection of the CN1253.
2
3
Step 9: S IN, S OUT
Note: When the connection is Composite OUT and Component OUT,
refer to the diagnose of IC800 and later in steps 8 and 10.
Perform the same check items up to
those for IC1701 of Step 6.
IC1805 (Pins 2-9),
IC1806 (Pin 2) (side B)
Are there
signals?
Yes
IC800 (through hole)
(Pins E13,D13,E12,D12,E11,
D11,E10,D10,D15) (side B)
Are there
signals?
Yes
R1203
R1209
Are there
signals?
Yes
Q1200 Emitter
Q1201 Emitter
Are there
signals?
Yes
CN1253 (Pin 16)
CN1253 (Pin 14)
Are there
signals?
Yes
To Step 10
SC-LX82
3
4
VDQ**
VDOCLK
No
Check IC1701 and its peripheral
circuits.
VID0-7, VICLK
No
Check IC1805, IC1806 and its
peripheral circuits.
A_VSYOUT_EM
A_VSCOUT_EM
No
Check IC800 and its peripheral
circuits. Check the soldering.
NG
Replace the DIGITAL MAIN Assy.
No
Check Q1200, Q1201 and
its peripheral parts.
A_VSYOUT
A_VSCOUT
No
Check the soldering and
connection of the CN1253.
4
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