
SX-LX70SW
44
1
2
3
4
1
2
3
4
C
D
F
A
B
E
5.4 SIRIUS TROUBLESHOOTING
• This flow is the diagnosis method when there is no reception or no so
u
nd o
u
tp
u
t.
• It is ass
u
med that there is no loose connection or damage in the LCRs.
• Refer to Block Diagram beside the Schematic Diagram abo
u
t the signal flow.
Troubleshooting
Step 1: Preliminary connecting confirmation
Step 2: Power
Step 3: Reception/Sound Confirmation
Confirm the following items before checking
Tighten the connection.
N
o
To Step 3
OP AMP
IC1601 (Pin
8
)
N
o
Is the voltage
aro
u
nd 12.0
V
?
Yes
Check the parts and patterns
in the path.
Check the parts and patterns
in the path.
Check the parts and patterns
in the path.
Replace IC1601.
To Step 2
Yes
Is SIRIUS CO
NN
ECT
TU
N
ER is s
u
rely connected
to SIRIUS RADIO JACK
?
Tighten the connection.
N
o
Yes
Is an AC Adapter
is s
u
rely connected to
SIRIUS CO
NN
ECT TU
N
ER
?
Tighten the connection.
N
o
Yes
Is an A
N
TE
NN
A
is s
u
rely connected to
SIRIUS CO
NN
ECT TU
N
ER
?
Perform a reception test,
u
sing a
free-of-charge channel 1
8
4,making this
u
nit an SIRIUS Radio inp
u
t so
u
rce.
Check the comm
u
cination
lines "SIRIUS TX, RX, RESET"
between SIRIUS Connector(JA1601) and
DIGITAL RADIO
u
-COM(IC5201).
Switch to Antenna Aiming mode at SIRIUS men
u
.
Signal strength indicator
N
o
Is the indication
OK?
Yes
Yes
Yes
Yes
N
o
N
o
DISPLAY
Does the reception becomes
OK by relocating the antenna
near a window?
The SIRIUS CO
NN
ECT TU
N
ER
may be defective.
Or confirm again the Antenna
and AC adapter.
L, R OUT
IC1601 (Pins 1, 7)
N
o
Is an A
N
ALOG
OUPUT signal?
to DSP TROUBLESHOOTI
N
G Step 4-2 :
W
hen a so
u
nd is not
o
u
t with the analog signal inp
u
t
Summary of Contents for AS-LX70
Page 3: ...SX LX70SW 3 5 6 7 8 5 6 7 8 C D F A B E ...
Page 15: ...SX LX70SW 15 5 6 7 8 5 6 7 8 C D F A B E ...
Page 68: ...SX LX70SW 68 1 2 3 4 1 2 3 4 C D F A B E 9 2 PACKING AS LX70 x 2 Refer to 9 6 REMOTE CONTROL ...
Page 74: ...SX LX70SW 74 1 2 3 4 1 2 3 4 C D F A B E 9 5 DISPLAY UNIT H G I NON CONTACT SIDE CONTACT SIDE ...
Page 76: ...SX LX70SW 76 1 2 3 4 1 2 3 4 C D F A B E 9 6 REMOTE CONTROL ...
Page 97: ...SX LX70SW 97 5 6 7 8 5 6 7 8 C D F A B E ...
Page 106: ...SX LX70SW 106 1 2 3 4 1 2 3 4 C D F A B E 10 15 POWER SUPPLY UNIT J ...
Page 108: ...SX LX70SW 108 1 2 3 4 1 2 3 4 C D F A B E ...
Page 130: ...SX LX70SW 130 1 2 3 4 1 2 3 4 C D F A B E CN3 CN2 J J POWER SUPPLY ASSY SIDE B SIDE B J ...