Pioneer SC-LX81 Service Manual page 42

1
D
A
Step 3-6: TMDS(INPUT)
IC1151(Pins 58,59,
TMDS(BD IN) *
61,62,64,65,67,68)
Are there signals
(approx. 0.5 Vp-p) in all
the lines?
Yes
B
IC1151(Pins 38,39,
41,42,44,45,47,48) TMDS(HDMI IN1/IN1) *
Are there signals
(approx. 0.5 Vp-p) in all
the lines?
Yes
IC1151(Pins 18,19,
21,22,24,25,27,28) TMDS(HDMI IN2/IN2) *
C
Are there signals
(approx. 0.5 Vp-p) in all
the lines?
Yes
IC101(Pins 39,40,
TMDS(HDMI IN3/IN3) *
43,44,47,48,51,52)
D
Are there signals
(approx. 0.5 Vp-p) in all
the lines?
Yes
IC101 (Pins 57,58,
TMDS(Rx1)
61,62,65,66,69,70)
Are there signals
(approx. 0.5 Vp-p) in all
the lines?
E
Yes
F
42
1
2
* When connected the source
equipment to BD IN.
H1
No
Check the soldering of JA1101.
No
Replace JA1101.
* When connected the source
equipment to IN1/IN1.
H1
No
Check the soldering of JA1102.
No
Replace JA1102.
* When connected the source
equipment to IN2/IN2.
H1
No
Check the soldering of JA1103.
No
Replace JA1103.
* When connected the source
equipment to IN3/IN3.
F1
No
Check the soldering of JA1104.
No
Replace JA1104.
* When connected the source
equipment to BD IN/IN1/IN2.
F1
No
Check the soldering of IC110*
and JA110*.
No
Replace IC110*and JA110*.
2
3
Step 3-7: TMDS(OUTPUT)
JA301(Pins 1,3,4,6,
7,9,10,12)
Are there signals
(approx. 0.5 Vp-p) in all
the lines?
Yes
JA351(Pins 1,3,4,6,
7,9,10,12)
Are there signals
(approx. 0.5 Vp-p) in all
the lines?
Yes
Step 3-8: AUDIO CLK,DATA
(HDMI: AMP MODE)
IC203(Pin 2)
Is there a
DATA?
Yes
R209(Right Side)
Is there a
DATA?
Yes
CN201(Pin 2)
Is there a
DATA?
Yes
E
SC-LX81
3
4
SC-LX81 only
TMDS(HDMI OUT1)
G10
No
Check the parts and patterns in
the path (IC301 - JA301).
No
Replace IC301.
TMDS(HDMI OUT2)
G13
No
Check the parts and patterns in
the path (IC351 - JA351).
No
Replace IC351.
RXSPDIF (DVD Dolby Digital)
I1
No
Check the parts and patterns in
the path (IC101 - IC203).
No
Replace IC101.
SPDIF
I2
Check the parts and patterns in
No
the path (IC203 - IC205).
Check the soldering of IC203,
L204 and R209.
No
Replace IC203.
HSPDIF
I3
Check the parts (B side) and
No
patterns in the path (IC205 -
IC201). Check the soldering of
IC205,L204 and R213.
No
Replace IC205.
Check the parts and patterns in
No
the path (IC201 - CN201).
Check the soldering of IC201,
L207 and R206.
No
Replace IC201.
4