JVC PD-Z35DV4 Service Manual page 42

< PAGE 2 OF SCREEN >
Item
Detection item
name
Fan lock FAN
Abnormal of ALM
operation of PDP
(PANEL)
Abnormal rise of TMP
temperature in PDP
(PANEL)
Abnormal rise of ATP
temperature in
AUDIO PWB
Short circuit detection ASH
of AUDIO PWB
Panel communication PNL
Panel memory MEM
Temp. sensor TMP
operation
Audio control AIO
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.
Type of error
Low bias line short
Abnormal of operation of PDP (PANEL)
Abnormal rise of temperature in PDP (PANEL)
Abnormal rise of temperature in AUDIO PWB
< 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.
1-42 (No.YA101)
Detection content
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 C communication.
2
IC805 [INTERFACE PWB]
Same as above.
IC8101 [TEMP. SENSOR PWB]
Same as above.
IC6521 [AUDIO PWB]
Item name
LOB
ALM
TMP
ATP
Detection
signal (line)
---
SDA
SDA
---
---
SDA
SDA
SDA
SDA
POWER LED flash cycle
Low luminance blue Flash 1.0 second / Low luminance blue Out 1.0 seconds
High luminance blue Flash 1.0 second / High luminance blue Out 1.0 seconds
High luminance blue Flash 2.0 second / High luminance blue Out 2.0 seconds
High luminance blue Flash 0.1 second / Low luminance blue Out 0.1 seconds
Detection timing
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 C communication is
2
performed, and no reply of ACK signal, an error
will be counted.
If it checks whenever I C communication is
2
performed, and no reply of ACK signal, an error
will be counted.
Same as above.
Same as above.