Repair Actions/HSIO
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| Note This page is a technician's reference and is not intended to teach diagnosis and repair of electronic circuits. |
1021/E 73
- ERROR_HSIO_TRAINING_FAILED
Occurs if the HSIO training fails due to an unresponsive or malfunctioning eDRAM. The SMC enters EC_XSS, the E 73 UEM will be displayed, and the 1021 code is displayed on the front panel.
1022/E 74 and 1102/E 82
- ERROR_HSIO_CALIBRATION_FAILED
Occurs if the HSIO calibration fails due to an unresponsive or malfunctioning eDRAM. The SMC enters EC_XSS, the E 74 or E 82 UEM will be displayed, and the 1022 or 1102 code is displayed on the front panel.
- On the Original Xbox 360, 1022/E 74 is displayed.
- On the Xbox 360 S and Xbox 360 E, 1102/E 82 is displayed.
Repair
- The HSIO bus connects the main die of the GPU to the eDRAM die. As all of these components are on the GPU substrate, it is not possible to service the chip internally.
- The only way to fix the E 73, E 74, and E 82 errors is to replace the GPU.