Pioneer PDP-5016HD Service Manual page 132

1
QQ
3 7 63 1515 0
A
4) No Power
Check the condition of the input power & cable connection.
(JP35(3V3STB, A+12V, +6.5V), JP36(5VSTB,35V), JP34(5V), JP33(S_16.5V))
Check the condition of on-board regulators.
Check for short circuits between each power terminal and the ground.
When Powered On
B
#5,6,7(3V3STB)
in Main Assy
#3(5VSTB)
In Main Assy
#9,11(M_SDA/SCL)
at J1(When power on)
In Main Assy
C
Check 1V8VDD
2V5VDDLine at U47,48
In Main Assy
TE
L 13942296513
waveform of Y1
in Main Assy
Check the other
Power of Power supply unit
D (A+12V,+6.5V,5V,+16.5V)
Change Main Assy
Waveform
•
E
<Waveform 1>
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132
1
http://www.xiaoyu163.com
2
No Power
NG
at JP35
NG
at JP36
Waveform 1
NG
NG
Waveform 2
The signal
NG
NG
<Waveform 2>
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y
. i
2
http://www.xiaoyu163.com
3
Check Power supply unit
& the short circuit between
3V3STB and GND
Check Power supply unit
& the short circuit between
5VSTB and GND
Check Power supply unit
& Panel Module
Check the state of soldering
in U47, U48 and related
components.
Q Q
3 6 7
Check the power of +3V3_PLL
and replace
the part of Y3
Check for short circuits
between each power terminal
and the ground
u163
PDP-5016HD
3
4
2 9 9 4
8
1 3 1 5 0 5 8 2 9
m
co
.
4
2 8
9 9
9 4 2 8 9 9
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