PDP-505MX
78
1
2
3
4
1
2
3
4
C
D
F
A
B
E
7.3 TROUBLE SHOOTING
The improved point with running change(MP electricity problem)
No. items
Symptoms
Cause
Provisional
measure
Serial NO. for
Provisional
measure
Permanent
measures
Permanent
measures
beginning lot
1
The audio
output is
abnormal.
_The noise such
as the hams
occurs.
_The sound is
not emitted.
The Control
voltage margin
was insufficient
of audio selector
IC.
The voltage of the
microcomputer is
improved.
Changed the
resistor
JP model:R50
200
Ω
(1%)
210
Ω
(1%) :
US & GA
model: R468
11K (1%)
10K (1%)
JP 42inch:
EITY002266JP
JP 50inch:
EITY002872JP
US 42inch:
EITY002256UC
US 50inch:
EITY002566UC
GA 42inch:
EITY002866EH
GA 50inch:
EITY002870EH
The level shift
circuit is added to
the control line
from the
microcomputer and
the control voltage
is improved.
(Board Assy
modification).
three of Transistor
and nine of
resistance
additions.
synchronized to the
mentioned board
assy modifications.
2
The screen
becomes like
white.
_It seems that
brightness goes
up when the
video signal of
specific VTR is
input.
This case is
generated by Y
level of the Sync
level AGC.
VTR is limited as
spec.
---
The firmware is
improved, and the
AGC function is
deleted.
JP model : Ver1.5
US&GA : Ver1.6
---
3
Service
mode
problem
The User
MENU is
initialized when
the service
mode entered .
Specification
change
---
The firmware is
changed, and
service MENU is
added.
JP model : ver1.3
US&GA : ver1.3
OK since this serial
NO.
JP 42inch:
EITY002766JP
JP 50inch:
EITY002872JP
US 42inch:
EITY002868UC
US 50inch:
EITY003774UC
GA 42inch:
EITY002866EH
GA 50inch:
EITY002870EH
• Counter measures
Summary of Contents for PDP-505MX
Page 7: ...PDP 505MX 7 5 6 7 8 5 6 7 8 C D F A B E ...
Page 21: ...PDP 505MX 21 5 6 7 8 5 6 7 8 C D F A B E ...
Page 46: ...PDP 505MX 46 1 2 3 4 1 2 3 4 C D F A B E Sensor Board IR Board Power Switch Board ...
Page 47: ...PDP 505MX 47 5 6 7 8 5 6 7 8 C D F A B E Button ...
Page 48: ...PDP 505MX 48 1 2 3 4 1 2 3 4 C D F A B E Audio Board ...
Page 49: ...PDP 505MX 49 5 6 7 8 5 6 7 8 C D F A B E ...
Page 50: ...PDP 505MX 50 1 2 3 4 1 2 3 4 C D F A B E PS250 PWR 500W ...