PDP-434PU
62
1
2
3
4
1
2
3
4
C
D
F
A
B
E
[ PANEL IF Assy-related diagnosis ]
[ DIGITAL VIDEO Assy-related diagnosis ]
Symptom
Error indication
What is happening?
(defective soldering, data-transmission error, etc.)
Which pin must be checked?
(What is to be checked?)
PD or SD? (How many times
does the LED flash?)
In which condition
does the symptom
tend to appear?
No power
Incomplete connection of the FPC (114-pin) between the
PANEL IF and DIGITAL assemblies. Incomplete
connection between the POWER SUPPLY and PANEL IF
assemblies.
Power
interrupted
The connection of the system cable may have been
slightly loose.
No display,
abnormal display
(abnormal LED)
Alternate flashing of the
red and green LEDs
Incomplete connection of the system cable
Shutdown occurs 30 seconds after
Both the red and green
LEDs lit
Incomplete connection between the TRAP switch and the
PANEL IF Assy. Rear case opened
Check if Pin 1 of the CN4006 is low.
Green LED flashes twice
Incomplete connection between the AUDIO and PANEL IF
assemblies
SD after the green LED flashes
twice
Green LED flashes four
times.
Panel having high temperature. Incomplete connection
between the PANEL SENSOR and DIGITAL assemblies.
Shutdown occurs 30 seconds after
the green LED flashes four times
alerting of high-temperature
operation
Defective lighting
Incomplete connection between the LED and PANEL IF
Assy
No key operation
effective
Incomplete connection between the PANEL KEY and KEY
CONTROL assemblies
Check if a pulse is output from Pin 2 of the
CN4852 when the KEY button is pressed.
Vibration added
Operation of the
remote control
unit is not
effective
Incomplete connection between the KEY CONTROL and
PANEL IF assemblies
Check if a pulse is output from Pin 5 of the
CN4010 when the KEY button is pressed.
Incomplete connection between the PANEL IR and
PANEL IF assemblies
Check if a pulse is output from Pin 3 of the
CN4010 when the KEY button is pressed.
Sound
interrupted
Incomplete connection between the AUDIO and PANEL IF
assemblies
Symptom
What is happening?
(defective soldering, data-transmission error, etc.)
Possible defective part
Which pin must be checked?
(What is to be checked?)
Abnormality in a one-eighth area of
the screen
IC5401 (40-pin connector) of the ADDRESS Assy
Check if an abnormal area in the screen changes when
the 40-pin FPC is replaced.
Abnormal screen
Data of every other dot are abnormal.
Incomplete connection of the 114-pin FPC