Pioneer SX-LX70SW Service Manual page 24

1
A
C
SCL(HDMI OUT)
JA301 (Pin 15)
Does
a clock output in
constant period
(0 - 5 V)
?
Yes
B
DSDA
IC301 (Pin 47)
Is there
a same signal as G13
(0 - 3.3 V)?
Yes
DSCL
IC301 (Pin 46)
C
Is there
a same signal as G14
(0 - 3.3 V)?
Yes
Step 3-6: TMDS(INPUT)
* When connected the source
IC101 (Pins 39,40,
43,44,47,48,51,52) TMDS(Rx0)
D
Do signals
(approx. 0.5 Vp-p)
run in all the
lines?
Yes
* When connected the source
IC1151 (Pins 27,28,
TMDS(HDMI IN2)
30,31,33,34,39,40)
Do signals
E
(approx. 0.5 Vp-p)
run in all the
lines?
Yes
* When connected the source
IC1151 (Pins 3,4,6,
TMDS(HDMI IN3)
7,9,10,45,46)
Do signals
(approx. 0.5 Vp-p)
run in all the
lines?
F
Yes
24
1
2
G14
No
Check the patterns in the path.
Check JA301.
No
Replace JA901.
D5
No
Check the patterns in the path.
Check R358.
No
Replace Q953.
D6
No
Check the patterns in the path.
Check R357.
No
Replace Q953.
equipment to IN1.
No
Check the soldering of JA1102.
No
Replace JA1102.
equipment to IN2.
No
Check the soldering of JA1151.
No
Replace JA1151.
equipment to IN3.
No
Check the soldering of JA1152.
No
Replace JA1152.
2
3
IC101 (Pins 57,58,
61,62,65,66,69,70)
Do signals
(approx. 0.5 Vp-p)
run in all the
lines?
Yes
Step 3-7: TMDS(OUTPUT)
JA301(Pins 1,3,4,6,
7,9,10,12)
Do signals
(approx. 0.5 Vp-p)
run in all the
lines?
Yes
Step 3-8: AUDIO CLK,DATA
IC201(Pin 9)
Is there a
DATA?
Yes
CN1001(Pin 6)
Is there a
DATA?
Yes
IC201(Pin 2)
Is there a
CLK?
Yes
D
SX-LX70SW
3
4
* When connected the source
equipment to IN2,3.
TMDS(Rx1)
No
Check the soldering of IC1151.
No
Replace IC1151.
TMDS(HDMI OUT)
E9
No
Check the parts and patterns in
the path (IC301 - JA301).
No
Replace IC301.
SPDIF
J3
Check the parts and patterns in
No
the path (IC101 - IC201).
No
Replace IC101.
SPDIFO
A1
No
Check the parts and patterns in
the path (IC201 - CN1001).
Check the soldering of IC201,
L207, Control Signal.
No
Replace IC201.
MCLK
J3
Check the parts and patterns in
No
the path (IC101 - IC201).
No
Replace IC101.
4