Pioneer Elite PureVision PRO 940HD Руководство по эксплуатации - Страница 32

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Pioneer Elite PureVision PRO 940HD Руководство по эксплуатации
1
QQ
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• Fundamental operation failure
A
"Home Media Gallery" does not work at
all!
Doesn't "Home Media Gallery" on
"HOME MENU" become selectable
after power-on?
There may be something defective in
the product.
Check each wire connection with the
MAIN ass'y.
[HN1]CN7851<=>[M14]CN4017
[HN2]CN7901<=>[M15]CN4016
Isn't there any failure?
B
Check the power supply for HNM ass'y.
Is there +5V voltage on 1st pin in
CN7901 of HNM side and on 1st pin in
CN4016 of MAIN side?
To make analysis, remove the wire
ass'y between CN7901 and CN4016.
Then, check the voltage in MAIN side
TE
L 13942296513
again.
Is +5V still not there?
There may be something defective in
MAIN ass'y.
Check the FET transistor switch in
MAIN ass'y for HNM power supply.
C
That is Q4102 and the parts around it.
www
D
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Note:
It takes a short while to start "Home
Media Gallery" function.
Please wait for about 40 seconds until
No
"Home Media Gallery" turns selectable.
Note:
The wire ass'y between CN7901 and
CN4016 has only three wires, though 4-
pin connector is used.
No
Check the UART communication
between HNM ass'y and MAIN ass'y.
Almost 35 seconds after power-on, is
yes
any pulse signal observed on 2nd pin in
CN7851: RXD_DLNA?
No
yes
No
There may be something defective in
HNM ass'y.
Replace the HNM ass'y with another
one.
x
ao
y
.
i
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http://www.xiaoyu163.com
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8
Note:
After completing the self-initializing,
HNM ass'y notice it to MAIN ass'y by
using RXD_DLNA.
No
yes
Q Q
3
6 7
1 3
There may be something defective in
MAIN ass'y.
Check the UART path in MAIN ass'y.
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