Pioneer VSX-1020-K Service Manual page 35

5
Step 5-2: Component IN, HDMI OUT (at 480i)
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)
No
Check IC1805 and IC1806 and its
Are there
peripheral circuits.
signals?
Check the soldering.
Yes
R872-R875,R878,R879,
R884-R887
No
Check IC800 and its peripheral
Is there a
signal? circuits. Check the soldering.
Q
Yes
Replace the D-MAIN Assy.
IC1801 (Pins 11-13),
PHSYNC, PVSYNC, PDE
IC1802, IC1803 (Pins 11-18),
P**
IC1804 (Pin 4) (side B)
PCLK
Are the
No
Check IC1801 to IC1804 and its
signals output?
peripheral circuits.
Yes
B
To Step 6
5
6
C
VID0-7, VICLK
VOD,VOCLK
VSX-1020-K
6
7
Step 6: HDMI OUT
CN1254 (Pin 16)
A_VVYIN
Is there a
No
Check CN1254 and diagnose
luminance
the COMPONENT Assy.
signal?
P
Yes
IC1701 (Pin 36) (side B)
Are there
No
Check the soldering between
color and luminance
IC1701 and CN1254 and its
signals?
peripheral circuits.
Yes
IC1701 (Pins 2,5-8,59-62, Q** RXHSYNC, RXVSYNC,
64),R1706 (side B) RXOCLK
Are the
No
Check IC1701 and its peripheral
signals output?
circuits.
Yes
IC1805 (Pins 3-9), Q16-23
IC1806 (Pin 4) (side B) VICLK
Are the
No
Check IC1805, IC1806 and its
signals output?
peripheral circuits.
Yes
C
To Step 7
7
8
A_VVYIN
8
A
B
C
D
E
F
35