HeyWatchOutDude
Member
Hi,
after a CD3217 replacement the MacBook Pro M1 (A2338 / 820-02020) no longer boots into the OS and it shows the "restore" screen.
I have noticed that PPBUS_AON is 11.98V instead of 12.3V, any idea where I should start?
Note:
- Device restore via AC2 doesnt work ... Error 4014.
- PP5V_S2 = 5.2V
- PP3V8_AON = 3.8V
-- U8100 area:
- PPVDD_SOC_1 = 0.7V
- PPVDD_CPU_SRM_AWAKE = 0.9V
- PPVDD_EPCU_AWAKE = 0.8V
- PPVDD_PCPU_AWAKE = 0.5V
- PPVDD_GPU_AWAKE = 7.2mV
- PPVDD_DISP_S1 = 0.7V
- PPVDD_DCS_S1 = 0.7V
- PP1V4_LDO_PREREG =1.3V
- PP1V8_S2 = 1.8V
- PP1V2_S2 =1.2V
- PP3V3_S2_UPC = 3.3V
-- U7700 area:
- PP1V25_S2 = 1.25V
- PP0V88_S1 = 0.8V
- PP2V5_AWAKE_NAND = 2.5V
- PP5V_BSTLY_VOUT_SPMU = 5V
- USB-C output: 19.8V / 0.01A
Seems like there is no power rail missing ...
Before replacing the CD3217 everything worked fine except transfer speed on USBC0 which was limited to USB2.0 speed.
after a CD3217 replacement the MacBook Pro M1 (A2338 / 820-02020) no longer boots into the OS and it shows the "restore" screen.
I have noticed that PPBUS_AON is 11.98V instead of 12.3V, any idea where I should start?
Note:
- Device restore via AC2 doesnt work ... Error 4014.
- PP5V_S2 = 5.2V
- PP3V8_AON = 3.8V
-- U8100 area:
- PPVDD_SOC_1 = 0.7V
- PPVDD_CPU_SRM_AWAKE = 0.9V
- PPVDD_EPCU_AWAKE = 0.8V
- PPVDD_PCPU_AWAKE = 0.5V
- PPVDD_GPU_AWAKE = 7.2mV
- PPVDD_DISP_S1 = 0.7V
- PPVDD_DCS_S1 = 0.7V
- PP1V4_LDO_PREREG =1.3V
- PP1V8_S2 = 1.8V
- PP1V2_S2 =1.2V
- PP3V3_S2_UPC = 3.3V
-- U7700 area:
- PP1V25_S2 = 1.25V
- PP0V88_S1 = 0.8V
- PP2V5_AWAKE_NAND = 2.5V
- PP5V_BSTLY_VOUT_SPMU = 5V
- USB-C output: 19.8V / 0.01A
Seems like there is no power rail missing ...
Before replacing the CD3217 everything worked fine except transfer speed on USBC0 which was limited to USB2.0 speed.
Last edited: