・
Block diagram of the shutdown signal
HD DIGITAL ASSY
HD AUDIO ASSY
IC3401
sequence
processor
IC3156
EEPROM
IC3753
VOLUME IC
IC3504
AMP
IC3158
TEMP SENSOR
IC3302
3.3V-RST
IC3304
1.2V-RST
IC3303
OR
IC5201
Module Ucom
D3
①
②
③
④
⑤
A_NG
TEMP1
A2
SCL
SDA
E_SCL
E_SDA
RST2
TXD_SQ
RXD_SQ
CLK_SQ
CE_SQ
BUSY SQ
Note:
The figures
①
-
⑤
indicate the
number of times the LED flashes
when sutdown occurs in the
corresponding route.
IC3754
EEPROM
②
IC3001
DVI REIVER
IC3157
DAC IC
・
Diagnosis of shutdown
Communication failure of IC3401
SQ ASIC BLOCK,
PANEL FLASH BLOCK
IC3401, IC3301
Writing failure of IC3401
Check if version data can be
read,using the
"GS1"command,after the
power is turned on again.
Communication failure of the EEPROM
(for retaining 4-Kbyte of data)
MODULE UCOM BLOCK IC3156
Communication error of DAC IC
MODULE UCOM BLOCK IC3157
Communication error of DVI Receiver IC TMDS RX BLOCK
IC3001
Communication failure of the EEPROM
(for retaining 4-Kbyte of data)
PANEL IF BLOCK
IC3754
Disconnection of connectors
A2-D3
Check if the connectors are
disconnected or are not
connected securely.
Defective volume IC
HD AUDIO ASSY
IC3753
Defective DC-DC converter
DIGITAL DD CON BLOCKU3601
Check if 3.3-V and 1.5-V
power supplies are activated.
Defective RST IC
PANEL FLASH BLOCK
IC3302-IC3304
Defective IC3401
SQ ASIC BLOCK
IC3401
POWER SUPPLY the 8-V power supply is not activated.
Check if the 8-V power is
supplied at Pin 1 of the D11
connector.
4 times
Abnormally high
temperature of the panel
Abnormally high temperature of the panel Ambient temperature
The panel will be shutdown if
the sensor detects temperature
of 75
℃
or higher (for the
PDP-436P/-506P).
Grounding fault of speaker out puts
Check if the speaker cables
are in contact with the
chassis,etc.
HD AUDIO
Defective AMP IC
HD AUDIO ASSY
IC3751
HD AUDIO
Disconnection of connectors
A1- P5
Check if connectors are
disconnented or are not
connected securely.
Point to be checked
Possidle
Defective Part
Remarks
Number of
flashes
SD Cirsuit in Operation
Defective Assy
Reason for Shutdown
HD DIGITAL
HD AUDIO
HD DIGITAL
HD DIGITAL
Power failure of the
driving processor
(RST2)
Communication failure
of the IICline (Check the
SD subcategory on the
Factory Menu.)
Communication failure
of the driving processor
Audio failure
1 time
2 times
3 times
5 times
36