JVC I'Art Palette PD-42V475, Руководство по обслуживанию

Страница: 33 / 192

(No.YA099) 1-33
Fan lock
Abnormal of
operation of PDP
(PANEL)
Abnormal rise of
temperature in PDP
(PANEL)
Abnormal rise of
temperature in
AUDIO PWB
Short circuit detection
of AUDIO PWB
Panel communication
Panel memory
Temp. sensor
operation
Audio control
FAN
ALM
TMP
ATP
ASH
PNL
MEM
TMP
AIO
---
SDA
SDA
---
---
SDA
SDA
SDA
SDA
Not used.
Confirm the operation of the panel
protection.
[PDP UNIT]
It detects whether the temperature in
a display unit is normal.
IC8101 [TEMP. SENSOR PWB]
Not used
Not used.
It confirm whether panel
communication is normal.
[PDP UNIT]
Confirmation of reply of ACK signal
which uses I
2
C communication.
IC805 [INTERFACE PWB]
Same as above.
IC8101 [TEMP. SENSOR PWB]
Same as above.
IC6521 [AUDIO PWB]
Not used.
Detection starts 8 seconds after the power is
turned on.
Detection is performed every 16ms.
If errors continues between 300ms, the power
is turned off.
Detection starts 8 seconds after the power is
turned on.
Detection is performed every 0.5 seconds.
If a temperature rises beyond the temperature
of 71° C for detection of error over the
predetermined 120 times, the power is turned
off.
Not used.
Not used.
If it checks whenever I
2
C communication is
performed, and no reply of ACK signal, an error
will be counted.
If it checks whenever I
2
C communication is
performed, and no reply of ACK signal, an error
will be counted.
Same as above.
Same as above.
< PAGE 2 OF SCREEN >
5.1.7 METHOD OF DISPLAY WHEN A RASTER IS NOT OUTPUT
In the state where a raster is not output by breakdown of the set, an error is displayed by blink of the POWER LED.
< EXPLANATION OF OPERATION >
If error is detected, the power is turned off.
Shortly after a power is turned off, POWER LED will be blinked.
Power cannot be turned on until the power cord takes out and inserts, after a power is turned off.
Type of error Item name POWER LED flash cycle
Low bias line short LOB Low luminance green Flash 1.0 second / Low luminance green Out 1.0 seconds
Abnormal of operation of PDP (PANEL) ALM High luminance green Flash 1.0 second / High luminance green Out 1.0 seconds
Abnormal rise of temperature in PDP (PANEL) TMP High luminance green Flash 2.0 second / High luminance green Out 2.0 seconds
Abnormal rise of temperature in AUDIO PWB ATP High luminance green Flash 0.1 second / Low luminance green Out 0.1 seconds
Detection item
Item
name
Detection
signal (line)
Detection timing Detection content