Fatal Error Code; How To Solved The Ferr26 - Casio CE-6000 Troubleshooting Manual

Special error message : Fatal error code
FErr20 Unfixed address is selected and unsettled error is happened.
FErr26 Abruption of program working. The interruption of abnormal condition
( Watch dog ) is happened.
FErr27 Stack pointer address become the except RAM address area.
Note : If this error is happened, the Flash ROM program and data is damaged.
Therefore, it is necessary to down load IPL data for ECR from a P/C or a RAM PACK.
For the error FErr20 and 27, it may occur when the local software (IPL) is developed in case the
developing time. Normally, this error is never happened in the standard IPL data.
For the error FErr26, it may occur when the hard ware has some problem like a poor soldering
at the Flash ROM pins or a spillage on the circuit of the address and data bus line.
In this case, please clean the PCB and try to re-solder the Flash ROM pins and try to down load
a IPL data.

[How to solved the FErr26]

When the error FErr26 is showed on the display at the machine, please resolder the Flash ROM 1
pins as showing in the figure.
Flash ROM Re-soldering
Re-solder the all lines.
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Trouble shooting ECR V1.01