20
HTP-072
1
2
3
4
A
B
C
D
E
F
1
2
3
4
A
B
C
N
o Sound
Phones
HTP-072: When connected phones, is
MAI
N
Assy CP5 pin 1 (HP_DET) low?
VSX-323: When connected phones, is
MAI
N
Assy CP101 pin 1 (HP_DET) low?
Is the voltage 0 to 12 V?
(HTP-072: MAI
N
Assy R23)
(VSX-323: MAI
N
Assy R32)
Does the sound of speaker
front ch output?
Set "STEREO" mode with STA
N
DARD
SURROU
N
D key and speaker O
N
/OFF
with SPEAKERS key.
Is pin 18 voltage changing
from 3.3 V to 2.23 V?
(FRO
N
T Assy CP705 pin 6)
HTP-072: Change analog input signal to another
analog input (e.g VIDEO) and select it.
Are the signal on AMP6 Assy CP401 pin 1, 9?
VSX-323: Change analog input signal to another
analog input (e.g VIDEO) and select it.
Are the signal on AMP5 Assy CP201 pin 1, 9?
Does HP OUTPUT signal output?
(HTP-072: MAI
N
Assy CP5 pin 2 or 4)
(VSX-323: MAI
N
Assy CP101 pin 2 or 4)
When connected phones,
does the relay change to phones?
(CPU Assy IC203 pin 24 0
→
3.3 V)
This is just for general reference and does not including every single case.
Speaker front ch sound
Relay Control Check flow
N
o
N
o
N
o
Replace HP Assy.
Replace HP Assy.
N
o Problem /
N
o Damage
Replace HP Assy.
Replacce Q5, Q12, R23 on
CPU Assy or replace CPU Assy.
Check IC2023 on CPU Assy
or replace CPU Assy.
N
o
N
o
N
o
N
o
Replacce Q2, Q9 on MAI
N
Assy
or replace MAI
N
Assy.
Check and repair FL or FR AMP
circuit or replace AMP Assy.
N
o
Replace CPU Assy.
N
o
N
o
N
o
N
o
HTP-072: Check connectors between MAI
N
Assy
CP5 and HP Assy C
N
721.
VSX-323: Check connectors between MAI
N
Assy
CP101 and HP Assy C
N
721.
Replace MAI
N
Assy.
N
o Problem /
N
o Damage
HTP-072: Check connecters between
MAI
N
Assy CP5 and HP Assy C
N
721.
VSX-323: Check connecters between
MAI
N
Assy CP101 and HP Assy C
N
721.
Yes
Yes
Yes
Yes
Yes
Yes
Replace FFC between CP704B
and C
N
705.
Yes
Check the problem analog signal
line between input connector and
IC400 (Input selector IC)
or replace MAI
N
Assy.
Yes
Yes
Yes
Yes
Yes
No Sound
Is the voltage changing
3.3 V to 2.23 V?
(CPU Assy C
N
704B pin 6)
Is the voltage 0 to 3.2 V?
(CPU Assy CP2 pin 7)
Is the voltage 0 to 12 V?
(MAI
N
Assy R20)
Analog in (e.g. CD)
Pure Direct
→
Speaker out sound
HTP-072: Are the signal on AMP6
Assy CP401 pin 1, 9?
VSX-323: Are the signal on AMP5
Assy CP201 pin 1, 9?
Содержание HTP-072
Страница 9: ...9 HTP 072 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 44: ...44 HTP 072 1 2 3 4 A B C D E F 1 2 3 4 9 2 VSX 324 K P K H I G F DLXE only Nut Clamp HP plate Nut ...
Страница 48: ...48 HTP 072 1 2 3 4 A B C D E F 1 2 3 4 9 4 S 11A P Center speaker Front L R Surround L R speaker ...
Страница 73: ...73 HTP 072 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 77: ...77 HTP 072 5 6 7 8 5 6 7 8 A B C D E F A B B OPTCO ASSY SIDE B CP108 CP1 109 CP3 CP5 CN1 IC1201 Q14 Q16 Q2 Q5 ...
Страница 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 ...
Страница 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 ...