PDP-4271HD
91
5
6
7
8
5
6
7
8
C
D
F
A
B
E
Has the function is selected Home
Media Gallery by Home menu?
Select the input of specification
by the input switch.
Has USB memory or digital camerra
is connected to USB connecter?
No
Insert USB device such as
USB flash memory.
NG
NG
No
Check between IC6301 and
IC7201. If there is no problem
then replace IC6301.
No
The panel is defective.
Check around USB connecter or
USB cable and check between
pin 2, 3 of CN7101 and pin 305,
406 of IC6301.
Check between IC7201 and
IC8001. If there is no problem
replace IC7201.
No
No
No
Replace the MAIN Assy.
Replace USB cable.
Yes
Yes
The image of the USB card
doesn't come out.
⇒
USB
Is the contents list are appear?
Yes
Has the signal come to IC6301?
Is the signal from IC6301 to
IC7201?
Is the signal input from IC7201 to
IC8001?
Yes
Yes
Has the symptom been settled
when the MAIN Assy is replaced?
Yes
Yes
No video from USB input
Is a signal being input other than
the component or RGB signal?
Only the component and RGB signals
cannot be output from MONITOR OUT.
Check the unit using either the
component or RGB signal.
No
Check around IC4701 and check the
communications between IC4701 and
the microcomputer. If there was no
ploblem then replace MAIN Assy.
No
No
Check the communication from IC4701
to CN4005. If there is no ploblem,
check the Flexible cable between
CN4005 and CN8803.
No
Check the communication between
the jack and IC4701. If there was
no ploblem replace IO Assy.
No
NG
Replace flexible cable.
Yes
Yes
Yes
Yes
MONITOR OUT image is not
displayed.
⇒
MONI_V
Has the signal arrived to IC4701?
Is a signal output from IC4701?
(pin 79)
Check the communication between
the CN8803 and Jack. If there was
no ploblem replace IO Assy.
Yes
Yes
No monitor output
28
Is a signal arrived to CN8803?
Is a signal output from jack?
Finishing troubleshooting.
29
29
R8801
V: 1 V/div H: 20
µ
sec/div
Waveforms
Input signal: Color-bar
28
IC4701 - pin 79
V: 1 V/div H: 20
µ
sec/div
Flowchart of Failure Analysis for The Video System