Lenovo Diagnostics & Fault Manuals
Manufacturer of Lenovo systems and diagnostic equipment.
Equipment Models
Hardware families produced by Lenovo
Indexed Error Codes for Lenovo
Machine-verified error code diagnostic walkthroughs
Legion Go APU Thermal Black Screen
WHEA-Logger Event 18 indicates a fatal Machine Check Exception (MCE) on an AMD Ryzen Z1 Extreme APU core. Under sustained 30W TDP load, heatpipe dry-out, thermal pump-out, or inadequate blower RPM causes junction temperature (TjMax) to exceed 100°C, causing voltage droop, core instability, display black screen, and hard reset.
Right TrueStrike Mouse Drift Disconnect
The right TrueStrike controller's base-mounted optical tracking sensor (PixArt low-power optical navigation IC) experiences intermittent I2C/SPI bus drops or false differential tracking reports. This is triggered by mechanical switch misalignment in FPS mode, loose ribbon cable seating at the daughterboard, or particulate contamination on the internal optical aperture.
Legion Go 5 Amber Blinks
Five amber blinks on the Legion Go power indicator signal an Embedded Controller (EC) emergency thermal trip (PROCHOT# asserted) or a power rail fault triggering an Over-Temperature Protection (OTP) latch shutdown on the primary APU/VRM voltage rails.
TrueStrike Controller Sleep Crash
A Windows kernel bugcheck 0x9F (DRIVER_POWER_STATE_FAILURE) occurs when the system transitions into Modern Standby (S0ix) or S3/S4 states while a TrueStrike controller is physically detached. The driver fails to complete an IRP_MJ_POWER request within the allotted watchdog timeout because the PnP USB/UART power state handshake between the tablet pogo-pin interface and controller MCU hangs.
Legion Go APU TDR Crash
The AMD Ryzen Z1 Extreme APU experienced a Timeout Detection and Recovery (TDR) event triggered by thermal throttling under sustained TDP load (>30W), leading to kernel-mode graphics driver (amdkmdag.sys) desynchronization and a bugcheck 0x116.