21
HTP-072
5
6
7
8
5
6
7
8
A
B
C
D
E
F
D
E
A
B
C
Check the voltage.
(MAI
N
Assy CP110 pin 3: +12 V)
(MAI
N
Assy CP110 pin 1: -12 V)
Check the voltage.
(MAI
N
Assy CP110 pin 3: +12 V)
(MAI
N
Assy CP110 pin 1: -12 V)
Are the signal on C
N
T
Assy CP115 pins 17, 19?
Are the signal on C
N
T
Assy CP110 pin 5, 7?
Are the signals on C
N
T
Assy C
N
110 pins 1, 3?
Are the signals on MAI
N
Assy CP110 pins 21, 23?
Is Digital signal from OPT
(or COAX) input OK?
I
N
PUT?
N
o
Auto Surround
Check between MAI
N
Assy CP110
and C
N
T Assy CP115.
N
o Check the data signals at the following locations.
VOL_CLK pin 15, VOL_DATA pin 14, CP2 (CPU Assy) - CP14 (MAI
N
Assy)
Check MAI
N
Assy CP14 pin 15
(VOL_CLK), pin 14 (VOL_DATA).
Repair IC400 and its peripheral
circuit or replace MAI
N
Assy.
Check and repair analog audio lines
between IC400 pins 54, 55 and CP110
pins 21, 21 or replace MAI
N
Assy.
N
o
N
o
N
o
N
o
N
o
N
o
Is the digital signal
(OPT) on D-MAI
N
Assy
CP2005 pin 1?
N
o
N
o
N
o
N
o
N
o
Analog
input
Digital
input
Replace C
N
2 on MAI
N
Assy or
replace MAI
N
Assy.
Replace C
N
TAssy.
Replace C
N
T Assy.
Replace OPTCO Assy.
N
o Problem /
N
o Damage
Yes
Yes
Repair IC402, IC403 and its peripheral
circuit or replace MAI
N
Assy.
Repair IC2207 (PCM9211), IC2209 (PCM1681)
and its peripheral circuit or replace D-MAI
N
Assy.
Check selection of speaker system
by [SPEAKERS] key on front panel
is correct.
HTP-072: Check signals of problem channel
on AMP6 Assy CP401 pin 3 (SL), 5(C), 7(SR).
VSX-323: Check signals of problem channel
on AMP5 Assy CP201 pin 3 (SL), 5(C), 7(SR).
Check signals of problem channel
on C
N
T Assy CP115 pin 15 (SR),
13 (SL), 11 (C), 9 (SW).
N
o
N
o
Check signals of problem channel
on C
N
T Assy CP110 pin 9 (SR),
11 (SL),13 (C),15 (SW).
Check and repair AMP circuit of problem
channels or replace AMP6 Assy.
Check relay operating. (Refer to Relay
Control Check flow for Front ch.)
Yes
Check signal line between
CP110 and CP115.
Yes
Yes
Yes
Yes
Yes
Repair IC2207 (PCM9211), IC2209 (PCM1681)
and its peripheral circuit or replace D-MAI
N
Assy.
Change speaker system to correct
setting.
Select surround mode to EX.STEREO
in Advanced Surround .
Check CPU Assy CP2 pin 6
(C_RLY) pin 5 (S_RLY).
N
o sound from Speaker System
is "SP: OFF" is selected,
Yes
Yes
Yes
Yes
Replace MAI
N
Assy
or their peripheral circuit.
Yes
Check the signal CP110 - CP115
or replace C
N
T Assy.
Yes
Check +/- 12 V line on MAI
N
Assy
or replace MAI
N
Assy.
Yes
Speaker C (SB etc) ch (Front LR is OK)
Summary of Contents for HTP-072
Page 9: ...9 HTP 072 5 6 7 8 5 6 7 8 A B C D E F ...
Page 73: ...73 HTP 072 5 6 7 8 5 6 7 8 A B C D E F ...
Page 80: ...80 HTP 072 1 2 3 4 A B C D E F 1 2 3 4 C SIDE B CP2001 CP2000 Q2043 Q2041 IC2018 Q2038 ...
Page 81: ...81 HTP 072 5 6 7 8 5 6 7 8 A B C D E F C C D MAIN ASSY SIDE B CP2003 CP2006 CP2005 CP2200 ...
