Pioneer VSX-920-K Service Manual page 17

5
QQ
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Step 4: X'TAL
IC706 (Pin 15)
Is there
a 16 MHz
input?
Yes
IC706 (Pin 13)
Is there
a 16 MHz
output?
Yes
IC703 (Pin 5)
Is there
a 27 MHz
input?
Yes
IC703 (Pin 4)
TE
L 13942296513
Is there
a 27 MHz
output?
Yes
IC709 (Pin 7)
Is there
a 27 MHz
input?
Yes
IC707 (Pin 21)
Is there
a 28.63636 MHz
input?
Yes
IC707 (Pin 22)
Is there
a 28.63636 MHz
www
output?
Yes
.
To Step 5
5
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6
No
Replace IC706 or X702.
No
Check the path to pin13 of IC706.
Replace IC706.
No
Replace IC703 or X701.
No
Check the path to pin4 of IC703.
Replace IC703.
No
Check the path to pin1,2,6,7 of
IC712. Replace IC712 or X704.
No
Replace IC707 or X705.
No
Check the path to pin22 of IC707.
Replace IC707.
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http://www.xiaoyu163.com
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Step 5: IN/OUTPUT Diagnosis
JACK701 (Pin 18)
Is the voltage
5 V?
Yes
JACK703 (Pin 18)
Is the voltage
5 V?
Yes
JACK704 (Pin 18)
Is the voltage
5 V?
Yes
JACK705 (Pin 18)
Q Q
3 6 7 1 3 1 5
Is the voltage
5 V?
Yes
To Step 6
co
.
VSX-920-K
7
9 4 2 8
* When connected the equipment to IN1(BD);
+5V_R3
No
Check the JACK705. If JACK705
is failure, replace JACK705.
* When connected the equipment to IN2(DVD);
+5V_R2
No
Check the JACK703. If JACK703
is failure, replace JACK703.
* When connected the equipment to
IN3(TV/SAT);
+5V_R1
No
Check the JACK704. If JACK704
is failure, replace JACK704.
* When connected the equipment to
IN4(DVR/VCR);
+5V_R0
0 5 8 2 9 9 4 2 8
No
Check the JACK705. If JACK705
is failure, replace JACK705.
m
8
9 9
A
B
C
9 9
D
E
F
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