PDP-5050SX
131
5
6
7
8
5
6
7
8
C
D
F
A
B
E
No. of times of
LED flashing
Category
Category
SD Circuit in operation
Defective Assy
Reason for shutdown
Point to be Checked
Possible
Defective
Part
Remarks
Green 1
SD1
Communication failure of the
panel-drive IC
DIGITAL VIDEO Assy
Communication failure of IC4
IC4 BLOCK,
IC5401
PANEL FLASH BLOCK
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.
Green 2
SD2
Communication failure of the
module IIC (Check the shutdown
subcategory on the Factory
menu.)
DIGITAL VIDEO Assy
Communication failure of the EEPROM
MODULE UCOM BLOCK
IC5206
MAIN BOARD Assy
Communication failure of the EEPROM
IF BLOCK
IC7405
AUDIO AMP Assy
Defective volume IC
AUDIO AMP Assy
IC3502
DIGITAL VIDEO Assy or
AUDIO AMP Assy
Disconnection of cable
CN4203(D18) - CN3501(A1)
Check if the cable is disconnected
or not securely connected.
Green 3
SD3
Power decrease of DIGITAL-
DC-DC
DIGITAL VIDEO Assy
Defective DC-DC converter
DIGITAL DD CON BLOCK
U5602
Check if 3.3 V and 1.5V are
activated.
Defective RST IC
PANEL FLASH BLOCK
IC5301,IC5302,
IC5303
PANEL POWER SUPPLY Assy
No startup of 12 V
Green 4
SD4
Panel having higher temperature
(TEMP1)
Panel having higher temperature
Surrounding temperature
Shutdown occurs when the sensor
temperature becomes 74
°
C or more
DIGITAL VIDEO Assy or
PANEL SENSOR Assy
Disconnection of cable
CN5202(D4) - CN1071(TE1)
Check if the cable is disconnected
or not securely connected.
Green 5
SD5
Audio failure
Speaker short-circuited
Speaker terminals
Check if the speaker cables are in
contact with the chassis, etc.
AUDIO AMP Assy
Defective AMP IC
AUDIO AMP Assy
IC3504
DIGITAL VIDEO Assy or
AUDIO AMP Assy
Disconnection of cable
CN4203(D18) - CN3501(A1)
Check if the cable is disconnected
or not securely connected.
Green 6
SD6
Communication failure of the
module microcomputer
DIGITAL VIDEO Assy
Failure in Module Ucom or defective peripheral circuits
MODULE UCOM BLOCK
IC5201
Failure in writing in the Module Ucom
MAIN BOARD Assy or
DIGITAL VIDEO Assy
Disconnection of cable
CN7401(M6) - CN4201(D17)
Check if the cable is disconnected
or not securely connected.
Failure in communication (MTXD, MRXD) between the
IC5201(Module Ucom) and IC7207 (Main Ucom)
Green 7
SD7
Serial communication failure of the
3-wire of the main microcomputer
MAIN BOARD Assy
Failure in CELIA or defective peripheral circuits
CELIA BLOCK
IC7004
Failure in MIKE or defective peripheral circuits
MIKE BLOCK
IC7101
AV BOARD Assy
Failure in IF Ucom or defective peripheral circuits
UIF UCOM BLOCK
IC8705
MAIN BOARD Assy or
AV BOARD Assy
Failure in communication (TXD_IC2, RXD_IC2, CLK_IC2,
IC2_CE, IC2_EMG) (TXD_IC3, RXD_IC3, CLK_IC3,IC3_CE,
IC3_BUSY) between one of the above devices and IC7207
(Main Ucom)
• Diagnosis of the shutdown
