PDP-505PE
60
1
2
3
4
1
2
3
4
C
D
F
A
B
E
• Block diagram of the shutdown signal system
• Diagnosis of shutdown
Note:
The figures
1
-
5
indicate the number of times
the LED flashes when shutdown occurs in the
corresponding route.
IC5206
EEPROM
IC1072
TEMP.
SENSOR
IC5003
1.5V-RST
IC5301
3.3V-RST
IC5401
IC4
IC5302
OR
IC4002
EEPROM
IC3502
VOLUME IC
IC3504
AMP
IC5201
MODULE UCOM
TE1
D4
D15
R4
R7
A1
A_NG
HD AUDIO AMP
ASSY
PANEL IF
ASSY
PANEL SENSOR
ASSY
DIGITAL VIDEO ASSY
RST2
TEMP1
A_SCL
A_SDA
B_SCL
B_SDA
E_SCL
E_SDA
TXD_IC4
RXD_IC4
CLK_IC4
IC4_CE
IC4_BUSY
5
1
2
2
3
4
2
LED
SD Circuit in
Operation
Defective Assy
Reason for
Shutdown
Point to be Checked
Possible
Defective Part
Remarks
1 time
Communication
failure of the
panel-drive IC
DIGITAL VIDEO
Communication failure
of IC4
IC4 BLOCK,
PANEL FLASH BLOCK
IC5401, IC5305
Writing failure of IC4
After turning the unit
on again, check if the
data on the version
can be read with the
GS1 command.
2 times
Communication
failure of the
module IIC
(Check the
shutdown
subcategory on
the Factory menu.)
DIGITAL VIDEO
Communication failure
of the EEPROM (4K)
MODULE UCOM
BLOCK
IC5206
PANEL IF
Communication failure
of the EEPROM (2K)
PANEL IF BLOCK
IC4002
Disconnection of cable CN4009 - CN3501
Check if the cable is
disconnected or not
securely connected.
HD AUDIO
Defective volume IC
HD AUDIO AMP Assy
IC3502
Defective 114-pin FPC CN4004 - CN5001
ADY1081
Check if the 114-pin
FPC is broken or not
securely connected.
3 times
Power decrease of
DIGITAL-DC-DC
DIGITAL VIDEO
Defective DC-DC
converter
DIGITAL DD CON
BLOCK
U5602
Check if 3.3 V and 1.5
V are activated.
Defective RST IC
PANEL FLASH BLOCK
IC5301, IC5302,
IC5303
POWER SUPPLY No startup of 12 V
4 times
Panel having
higher temperature
DIGITAL VIDEO
Cable disconnected
CN5202 - CN1071
Panel having higher
temperature
Surrounding temperature
Shutdown occurs
when the sensor
temperature becomes
74
°
C or more (PDP-
435PE) or 74
°
C or
more (PDP-505PE).
5 times Audio failure
Speaker short-circuited Speaker terminals
Check if the speaker
cables are in contact
with the chassis, etc.
HD AUDIO
Defective AMP IC
HD AUDIO AMP ASSY
IC3504
HD AUDIO
Disconnection of cable CN4009 - CN3501
Check if the cable is
disconnected or not
securely connected.