Defective locations assumed from the number of LED Flashing
LED Blink number
SD/PD
Detected location
Possible failure location
OSD comment when detecting SD
RED
GRN
RED
GRN
Explanation of expected failure parts
RED
GRN6
Module Ucom
Short circuit of system cable
None
Module Ucom on panel or around this Ucom
Main Ucom ( IC7207)
Communication line error between Module Ucom on panel and IC7207
(TXD_MD
、
RXD_MD
、
REQ_MD)
RED
GRN7
Main Ucom 3 serial lines
IC7004 (IP Process IC) or around this IC
None
Communication line error between IC7004 and IC7207 Main Ucom (TXD_IC2,
RXD_IC2, CLK_IC2, IC2_CE, IC2_EMG)
IC7101( RESIZE MIX IC) or around this IC
SD
Communication line error between IC7101and IC7207 Main Ucom (TXD_IC3,
RXD_IC3, CLK_IC3, IC3_CE, C3_REQ, IC3_BUSY)
RED
GRN8
IIC bus line
IC8903 ( CC Ucom) or around this IC
None
IC6107 (CD_MAIN) or around this IC
IC6255 (CD_SUB) or around this IC
IC6402 (AD_MAIN) or around this IC
IC6602 (AD_SUB) or around this IC
IC6801 (HDMI_1) or around this IC
IC6881 (HDMI_2) or around this IC
IC6951 (BUS_SW) or around this IC
IC7401 ( TX) or around this IC
U7501 (TU) or around this IC
IC8002 (AV_SW) or around this IC
IC8005 (RGB_SW) or around this IC
IC7205 ( E2P) or around this IC
Communication line error between the above ICs and IC7202 Main Ucom
(SCL_AV, SDA_AV, SCL_MAIN, SDA_MAIN, SCL_HDMI, SDA_HDMI,
SCL_EP, SDA_EP)
RED
GRN9
Main Ucom
IC7202 (Main Ucom)
None
Flexible cable failure between Main board and AV board
Communication line error between IC7202 Main Ucom and IC8702 IF Ucom
(TXD_IF, RXD_IF, CLK_IF, IF_CE, IF_BUSY)
RED
GRN10
FAN
Stop FAN due to fan failure or something is stuck in the fan
None
RED
GRN11
MR or PDP having high
temperature
Using units in high temperature location
Turn of the unit due to high temperature.
Confirm temperature around MR [SD11]
RED
GRN13
ASIC Power (DC-DC )
Failure in U8502 (DD_CON on AV) or short circuit on another location
None
RED
GRN14
IF_E2P
Defective IC8705 (IF_E2P) or its peripheral circuits
None
RED
RED
1
PD
MR PWR
MR power Assy in failure or short circuit on another location
None
Panel LED
MR LED
54