Onkyo TX SR308

TX-SR308 HT-280/ 380/ 538/ C230TX-SR308 HT-R280/ 380/ 538/ C230
TROUBLE SHOOT-3
No Sound
A
1
2
3
4
5
BCDEF GH
6
7
8
IJK
Y
NNN
Y
YY
N
N
NY
Y
N
N
N
N N
Y
Y
Y
Y
N
N
YY
N
Y
N
NN
N
Y
NN
YY
N
Y
Y Y
DIR_FLR DIR_LRCK DIR_BCK DIR_MCK
DSP_FLR/SLR/CSW CX_LRCK CX_SCLK HDMI_MCK
HDMI_FLR HDMI_LRCK HDMI_BCK
V:1V/cm H:0.1µ/cm V:1V/cm H:5µ/cm V:1V /cm H:0.1µv/cm V:1V/cm H:0.1µv/cm
HDMI_SPDIF
V:1V/cm H:0.1µ/cm
BAAF-0341(AF Board)
AUDIO-SEL_OUT
SR--J4083 FR----J4081
C----J4093 FL----J4095
SL--J4175 SW--J4082
refer to a figure
(AMP_OUT)
SR---R6064 FR---R6061
C-----R6062 FL----R6060
SL----R6063
SW---R6067
R6302 or 6322 +22V
refer to a figure
BCAF-0341 (AF Board)
P6901(+49V) P6902(-49V)
BAAF-0341(AF Board)
Q4170 3pin +15V
Q4171 3pin -15V
D4172 anode +7V
D4171 cathode -7V
BAHDM-0403(HDMI Board)
DIR_OUT
P8001 3pin DIR_BCK
5pin DIR_LRCK
7pin DIR_FLR
P8002 23pin DIR_MCK
BADG-0364
(MPU Board) DSP_OUT
P8002 24pin DSP_FL/R
P8001 8pin DSP_SL/R
,
10pin DSP_CSW
,
4pin CX_SCLK
.
6pin CX_LRCLK
BADG-0364(MPU Board)
BADG-0364(MPU Board)
DAC_OUT
BADG-0401(HDMI Board)
JL801
2pin and 4pin +12V
BAETC-0359(torans terminal)
JL952 1-3pin AC10V
BADG-0364(MPU Board)
P2001 21 22pin +5V
BADG-0364(MPU Board)
P2001 21 22pin +5V
BAETC-0352(torans terminal)
JL952 1-3pin
AC10V
BAVD-0375(Video Board)
BAHDM-0401(HDMI Board)
P8001 16pin HDMI_SPDIF .
15pin HDMI_MCK
13pin HDMI_BCK
11pin HDMI_LRCK
9pin HDMI_FLR
BAHDM-0401 (HDMI Board)
JL801
1&4pin +12V
BAETC-0352(torans terminal)
JL952 1-3pin
AC10V
Note:
This is just for general reference and does not include every single case.
The above waveforms are got by Oscilloscope of Maximum Horizontal Sensitivity: 100MHz.
The results depend on the oscilloscope.
No Sound
from HDMI input
Waveforms are no problem?
BAVD-0375(Video)
Replace Video Board or Repair
Repair
D9011/R9013/R9012
and their peripheral circuit.
Replace Power
transformer or
Repair its peripheral
circuit.
BAHDM-0401(HDMI Board)
Make sure that JL801 3pin is 12V
Replace HDMI Board
or Replace Q8101(HDMI_4RX)
or Repair its peripheral circuit.
No Sound
from COASXL/OPT input
Waveforms are no problem?
Waveforms are no problem?
Analog signal outputs from 4-9
pins of P5502?
4pin----FR 5pin----FL
6pin----SW 7pin----C
8pin----SR 9pin----SL
Replace MPU Board or
Replace
U131/132 Q301 Q131 or
Repair their peripheral
circuit.
Replace Video Board or
Repair
Q9031/D9011/R9013/R9012
and their peripheral circuit.
BAVD-0382/0389(Video Board)
Replace Video Board or
Repair
D9011/9013/R9012
and their peripheral circuit.
BAHDM-0401(HDMI Board)
Make sure that JL801 2pin & 4pin is
12V. Replace HDMI Board or
Replace Q201(DSP-IC) or
Repair its peripheral circuit.
BAETC-0352(torans terminal)
JL952 1-3pin
AC10V
BADG-0364(MPU Board)
Replace MPU Board or
Replace Q302 or
Repair its peripheral
circuit.
Replace Power
transformer or
Repair its peripheral
circuit.
BAVD-0382/0389(Video Board)
Replace Video Board or
Repair
Q9031/D9011/R9013/R9012
and their peripheral circuit.
No Sound
from ANALOG input
Signal output is no problem?
Signal output is no problem?
BCAF-0341(AF Board)
Replace AF Board or
Repair R4160/4166
D4300/4301/4302/4303 and
their peripheral circuit.
BADG-0364(MPU Board)
P5503 3pin (SEC1H)
Voltage changes from 0V to
3V about 2 or 3 seconds after
power-on?
P5504 2pin, 4pin, 5pin
Voltage changes from 0V to
3V about 3 or 4 seconds
after power-on?
BADG-0364(MPU Board)
P5503 6pin(I-pro):0V
5pin(V-
pro):0V
JL501 3pin(THE): +1V or lower
8pin(V-olh):0V
Replace AF Board or
Repair
Q6053/6055/6052/6051
R6057, and their peripheral
circuit.
BADG-0364(MPU Board)
Replace MPU Board or
Replace Q701 and repair
its peripheral circuit.
BCAF-0341(AF Board)
Replace AF Board or
Repair Q4001 and its
peripheral circuit.
Y
BCAF-0341(AF Board)
Replace AF Board or
Repair Q4170, Q4171, D4172, D4171
and
their peripheral circuit.
BCAF-0341(AF Board)
Replace AF Board or
Repair powerIC(Q6601/6602)
and their peripheral circuit.
BCAF-0341(AF Board)
Replace AF Board or
Replace D6901 F6901
F6902 and repair their
peripheral circuit.
Y
figure
centralleadwireoftheresistance
BAAF-0341(AF Board)
central lead wire of the resistance
BAAF-0341(AF Board)
BADG-0364(MPU Board)
BAAF-0341(AF Board)