Repair Actions/0001: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 21: | Line 21: | ||
* Check ANA_V12P0_PWRGD (V12P0_PWRGD on Corona and Winchester) | * Check ANA_V12P0_PWRGD (V12P0_PWRGD on Corona and Winchester) | ||
** If missing, check V_12P0_DET circuit | ** If missing, check V_12P0_DET circuit | ||
** If V_12P0_DET is fine but the signal is missing, replace ANA/HANA | ** If V_12P0_DET is fine but the signal is missing, replace ANA/HANA/KSB (depending on which is on the board) | ||
{{Debug and Repair}} | {{Debug and Repair}} | ||
Revision as of 23:10, 19 January 2023
| Note This page is a technicians reference and is not intended to teach diagnosis and repair of electronic circuits. |
- ERROR_V12P0
ANA_V12P0_PWRGD is driven high by the ANA (later HANA) as long as the V_12P0 rail is within tolerance. If V_12P0 ever drops out of tolerance, the signal is de-asserted, causing the SMC to enter EC_FATAL and the 0001 code to be displayed on the front panel.
Short Circuit
- Check if V_12P0 is shorted
- If it is, check circuit sections to localize short
- CPU VREG
- GPU VREG (Not on Xbox 360 S/E)
- V_5P0 VREG
- V_12P0 Bleeder
PSU Enable and Power Good
- Check PSU_V12P0_EN signal components
- If components are fine but the signal is missing, replace Southbridge
- Check 12V on DC jack
- If missing, replace PSU
- Check ANA_V12P0_PWRGD (V12P0_PWRGD on Corona and Winchester)
- If missing, check V_12P0_DET circuit
- If V_12P0_DET is fine but the signal is missing, replace ANA/HANA/KSB (depending on which is on the board)