Product specifications

DA100 (50Hz) Chassis – Article for Television Magazine
Error Codes
Each chassis has a method of flashing the LED’s on the front of the set to indicate whether various
devices connected to the I2C bus are operational. These codes are shown in the table below.
Main Reset or EPROM
off On
NVM
2 Flashes/Pause
Off
MSP
3 Flashes/Pause
Off
Video
4 Flashes/Pause
Off
I2C 1 Locked
I2C 2 Locked (NVM)
On On
MegaText/M3 bus
On 1 Flash/Pause(1:3)
Green - On Orange - On
Green - On Orange - Off
Green - Off Orange - Off
NVM Blanking Device
s
EPROM
FW-SERV-JIG01 OTP (5v device)
HW-SERV-JIG01 MTP (3v3 device) Used with PWB's that have double sided
c
PC interface
LED Fault Code Table
LED
keeps repeating boot sequence
Orange
OPC
Green
NICAM
See technical bulletin CTV2002 04 01
Boot
Sequence
Notes
Not used in HW models
Boot sequence can repeat si x times before
the fault code i s di splayed.
Time taken for re-boot will vary depending
on what section is faulty.
NVM normally are not faulty they only need
re-programming. Default NVM data i s
contained in the EPROM.
When replacing EPROM always blank the
NVM first.
Figure 64: LED Fault Code Table
Note that the HW sets do not have an OPC LED, so the following ‘jig’ will have to be made.
Figure 65: HW OPC LED Error Code Jig
Page 67 of 80
Sharp Electronics (UK) Limited - March 2003
Revision 2