Pioneer VSX-1020-K Service Manual page 37

5
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 IC1805 and IC1806 of Step 6.
IC800 (through hole)
(Pins E13,D13,E12,D12,E11,
D11,E10,D10,D15) (side B)
No
Check IC1805, IC1806 and its
Are there
peripheral circuits.
signals?
Yes
R1203
A_VSYOUT_EM
R1209
A_VSCOUT_EM
No Check IC800 and its peripheral
Are there
circuits. Check the soldering.
signals?
Q
Yes
Replace the D-MAIN Assy.
Q1200 Emitter
Q1201 Emitter
No Check Q1200, Q1201 and
Are there
its peripheral parts.
signals?
Q
Yes
CN1254 (Pin 19)
A_VSYOUT
CN1254 (Pin 21)
A_VSCOUT
No
Check the soldering and
Are there
connection of the CN1254.
signals?
S
Yes
To Step 10
5
6
VID0-7, VICLK
NG
6
7
Step 10: COMPOSITE IN, COMPOSITE OUT
(at DVC ON)
Note: When the connection is S Component OUT,
refer to the diagnose of IC800 and later in steps 8 and 9.
Perform the same check items up to
those for IC1805 and IC1806 of Step 7.
IC800 (through hole)
(Pins E13,D13,E12,D12,E11,
D11,E10,D10,D15) (side B)
Are there
signals?
Yes
R1214
Is there a
signal?
Q
Yes
Check Q1202 and its peripheral circuits.
Is there a
signal?
Q
Yes
CN1254 (Pin 8)
Is there a
signal?
P
Yes
Diagnose the COMPONENT Assy.
Step 11: GUI/JPEG (USB)
Composite/S/Component OUT
Diagnose the IC800 (through hole) of Composite/S/
Component OUT and later.
Step 12: GUI/JPEG (USB)
HDMI OUT
C
Go to
VSX-1020-K
7
8
VID0-7, VICLK
No
Check IC1805, IC1806 and its
peripheral circuits.
A_VCYOUT_EM
No
Check IC800 and its peripheral
circuits. Check the soldering.
NG
Replace the D-MAIN Assy.
A_VCYOUT
No
Replace Q1202 and its peripheral
parts.
A_VCYOUT
No
Check the soldering and
connection of the CN1254.
.
8
A
B
C
D
E
F
37