21
VSX-819H-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
5. DIAGNOSIS
5.1 DIAGNOSIS FLOWCHART
Step 3: Regulator IC
REG101, REG102 (Pin 3)
Is the
voltage of 3.3
V
input?
Replace REG103.
Check the ZD200 2.4
V
B
and IC106.
To Step 3
To Step 4
Step 0: Preliminary confirmation
Confirm the following items before checking
Tighten screws securely.
N
o
Yes
To Step 1
N
o
Troubleshooting
[1] DSP TROUBLESHOOTING
Step 2: Regulator IC
Check the REG101,
REG102 and MAI
N
Assy
Check the REG103 and
MAI
N
Assy.
REG103 (Pin 3)
Is the
voltage of around
5
V
input?
N
o
Yes
(to chassis)
ZD200 kathode
Is the
voltage of 2.5
V
output?
N
o
*The I/O power of DSP Assy is OK
*The IC106 power of DSP Assy
*the DSP IC CORE power of DSP Assy
XMCK
N
ote: REG101, REG102 is made of
parallel connection.
REG103 (Pin 2)
Is the
voltage of 3.3
V
output?
N
o
Yes
Yes
Yes
Is the
voltage of 1.2
V
output?
Replace REG101, 102.
Check the path to XTAL101.
N
o
Yes
(to chassis)
(to chassis)
REG101, REG102 (Pin 2) (to chassis)
Step 1: BtoB connector
CP200,C
N
206,CP105
Are the
connectors securely
inserted?
Turn the power off and
insert the connectors
securely.
N
o
Yes
To Step 2
*C
N
206,CP200 connectors
doesn't connection in case
of DSP JIG B'D use.
BtoB connector
Do screws of COAX
Jack securely tighten?
OR connect G
N
D wire of
DSP JIG B'D to chassis.
Step 4: X'tal
To Step 5
Yes
IC109 (Pin 6, 7)
N
o
Is there
a 24.576 MHz
output?
Check the path to pin 6, 7 of IC109.
Replace XTAL101.
Yes
IC102 (Pin 17)
N
o
Is there
a 24.576 MHz
input?
Summary of Contents for VSX-819H-K - AV Receiver - Gloss
Page 19: ...19 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F 4 4 U COM BLOCK DIAGRAM P C B SUB ASSY FRONT C ...
Page 49: ...49 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 55: ...55 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 61: ...61 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F J CN401 M CP107 A FL FL FL SL SL SL C C C ...
Page 71: ...71 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F P 2 2 CN805 R 116 ...
Page 73: ...73 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F R CP105 A CP705 C ...
Page 77: ...77 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F B A SIDE B B P C B SUB ASSY P T ...
Page 83: ...83 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F J 01 SIDE A SIDE B ...
Page 87: ...87 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F L SIDE A ...
Page 89: ...89 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F L SIDE B ...
Page 95: ...95 VSX 819H K 5 6 7 8 5 6 7 8 A B C D E F P N SIDE B ...