Pioneer SC-27 Service Manual page 47

5
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.
IC1805 (Pins 2-9), VDQ**
IC1806 (Pin 2) (side B) VDOCLK
No
Check IC1701 and its peripheral
Are there
signals? circuits.
Yes
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
R1214
A_VCYOUT_EM
No
Check IC800 and its peripheral
Is there a
circuits. Check the soldering.
signal?
Yes
Replace the DIGITAL MAIN Assy.
Check Q1202 and its peripheral circuits.
No
Replace Q1202 and its peripheral
Is there a
parts.
signal?
Yes
CN1253 (Pin 6)
A_VCYOUT
No
Check the soldering and
Is there a
connection of the CN1253.
signal?
Yes
Diagnose the COMPONENT Assy.
5
6
VID0-7, VICLK
NG
A_VCYOUT
6
7
Step 11: GUI
Composite/S/Component OUT
Diagnose the IC800 (through hole) of Composite/S/
Component OUT and later.
Step 12: GUI
HDMI OUT
D
Go to .
Step 13: JPEG (USB)
R1254,R1255
No
Are there
signals?
Yes
To Step 11 or 12.
SC-27
7
8
D+, D-
Check CN1259 and L1250 and
its peripheral circuits.
NG
Check the USB device.
8
A
B
C
D
E
F
47