Repair Actions/0033
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| Note This page is a technician's reference. You will need Schematic and/or Boardview files to follow these steps. |
This error only exists on the Xbox 360 S and Xbox 360 E.
- ERROR_V_MEM
VREG_VMEM_PWRGD is driven high by the V_MEM controller as long as the rail is within tolerance. If V_MEM ever drops out of tolerance, the signal is de-asserted, causing the SMC to enter EC_FATAL and the 0033 code to be displayed on the front panel.
Short Circuit
- Check if V_MEM is shorted
- If it is, check circuit components to localize short
- Lift at least 1 pin of the inductor to isolate the rail before checking
Enable and Power Good
- Everything in this section must be checked quickly, as the SMC will shut down power upon entering EC_FATAL
- Check VREG_VMEM_EN signal and pulldown
- If pulldown is fine but signal is missing, replace Southbridge
- Check VREG_VMEM_PWRGD
- If present, replace Southbridge
- If missing, check pullup
- If pullup is fine, continue below
VREG Circuit
- Everything in this section must be checked quickly, as the SMC will shut down power upon entering EC_FATAL
- Check if V_MEM is present
- If it is, replace the PWM driver and recheck PWRGD
- If it isn't, check VREG and PWM driver