PDP-506PE
64
1
2
3
4
1
2
3
4
C
D
F
A
B
E
• Block diagram of the shutdown signal
Note:
The figures
1
-
5
indicate the number of times
the LED flashes when shutdown occurs in the
corresponding route.
• Diagnosis of shutdown
Number of
flashes
SD Circuit in
Operation
Defective Assy
Reason for
Shutdown
Point to be Checked
Possible
Defective Part
Remarks
1 time
Communication
failure of the
driving processor
HD DIGITAL
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.
2 times
Communication
failure of the IIC
line (Check the SD
subcategory on
the Factory Menu.)
HD DIGITAL
Communication failure
of the EEPROM (for
retaining 4-Kbyte of data)
MODULE UCOM
BLOCK
TMDS BLOCK
IC3156, IC3157
HD AUDIO
Communication failure
of the EEPROM
(2-kbyte : for backup)
AUDIO AMP 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
IC3001
3 times
Power failure of
the driving
processor (RST2)
HD DIGITAL
Defective DC-DC
converter
DIGITAL DD CON
BLOCK
U3601
Check if 3.3-V and 1.2-
V power supplies are
activated.
Check if the 8-V power
is supplied at Pin 1 of
the D11 connector.
Defective RST IC
PANEL FLASH BLOCK
IC3302 - IC3304
Defective IC3401
SQ ASIC BLOCK
IC3401
POWER SUPPLY
The 8-V power supply
is not activated.
4 times
Abnormally high
temperature of the
panel
Abnormally high
temperature of the
panel
Ambient temperature
The Panel will be shut
down if the sensor
detects temperature of
75
°
C or higher (for the
PDP-436P/-506P).
5 times Audio failure
Speakers' grounding
fault
Speaker terminals
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 the connectors are
disconnected or are not
connected securely.
IC3156
EEPROM
IC3158
Temp.
Sensor
IC3304
1.2V-RST
IC3302
3.3V-RST
IC3001
TMDS Receiver
IC3157
DAC IC
IC3401
Sequence Processor
IC3303
OR
IC3753
WOW + Volume IC
IC3751
Amp.
IC3754
EEPRON
IC3151
Module UCOM
D3
A2
A_NGB
HD AUDIO ASSY
HD DIGITAL ASSY
RST2
TEMP1
E_SCL
E_SDA
SCL
SDA
TXD_SQ
RXD_SQ
CLK_SQ
CE_SQ
BUSY_SQ
1
2
5
2
3
4