mate20 pro TOP故障维修指引V1.0 量测点对 二极 应序号 体 电压 实物点测图 全景图 TOP面 5 0.37V 1.8V 11 0.29V 0.9V 7 0.31V 1.95V U1400 2 返回目录 上电时序图 返回目录 信号脚 PWR_HOLD SYS_RST_N SOC_RST_PMU_N (POR_RST) PWRON_N VOUT_PMUA (LDO_PMUA) VOUT34_3V3 (LDO34) VBUCK3_1V95 (BUCK3) VBUCK2_1V3 (BUCK2) VOUT41_1V2 (LDO41) VOUT26_1V7/1V35 (LDO26) VBUCK9_0V9 (BUCK9) VOUT27_1V8 (LDO27) VOUT0_0V75 (LDO0_1) VBUCK0_0V75 (BUCK0) VBUCK6_0V7 (BUCK6) VOUT30_0V75 (LDO30) VOUT39_0V8 (LDO39) VBUCK8_1V8 (BUCK8) VBUCK1_1V12 (BUCK1) VBUCK7_0V6 (BUCK7) VBUCK4_0V7 (BUCK4) VOUT40_0V8 (LDO40) VOUT6_0V85 (LDO6) VOUT7_1V8 (LDO7) VOUT8_1V8 (LDO8) VOUT36_1V2 (LDO36) VOUT29_TPIO_1V8 5(LDO29) VOUT37_1V2 (LDO37) VOUT5_1V8 (LDO5) VOUT38_TCAM_DVD D_1V2(LDO38) VOUT15_2V95 (LDO23) VOUT23_3V2 (LDO23) LDO_BUFF_1V8 (LDO_BUF) VOUT18_1V8 (LDO18) VOUT24_3V0 (LDO24) SYS_CLK (SYS_CLK_38M4) ABB_CLK_38M4 UFS_REF_CLK (UFS_CLK_19M2) SYS_CLK32_32K (CLK32_SYS) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 C1202 0.54V 1.8V 1 R1601 0.38V 1.8V C1205 0.38V 1.8V TP3035 2.63V 1.8V TP3083 0.37V 1.8V C1033 0.46V 3.3V C1146 0.31V 1.95V C1144 0.26V 1.3V C1017 0.21V 1.2V C1028 0.35V 1.35V C1101 0.29V 0.9V C1032 0.35V 1.8V C1050 0.33V 0.75V L1107 0.3V 0.75V C480 0.37V 0.7V C1053 0.33V 0.75V C501 0.32V 0.8V C1128 0.29V 1.8V C422 0.18V 1.12V C417 0.23V 0.6V 4 2.63V 1.8V ` 2 12 0.35V 1.8V C1147 0.42V 0.7V C1022 0.32V 0.8V C1027 0.34V 0.85V C1045 0.38V 1.8V C1047 0.28V 1.8V C1021 0.31V 1.2V C1740 0.37V 1.8V C1041 0.3V 1.2V C435 0.35V 1.8V C1012 0.31V 1.2V C1413 0.39V 2.95V R2101 0.59V 3.2V C1036 0.33V 实际 3.93V C1014 0.32V 1.8V C1031 0.28V 实际 2.79V R1218 0.44V 0.58V C1208 0.45V 0.91V R1228 0.45V 0.58V R1219 0.37V 0.9V 0.3V 0.75V 14 0.62V 2.79V 0.42V 0.7V 35 21 18 0.29V 1.8V U1000 0.33V 0.75V 0.46V 3.3V 0.45V 0.58V 0.39V 2.95V 38 36 0.33V 3.93V 9 0.21V 1.2V 0.35V 1.35V 6 33 31 0.23V 0.6V 0.26V 1.3V 0.31V 1.2V 30 0.31V 1.2V 23 26 28 0.34V 0.85V 10 16 13 0.33V 0.75V 0.32V 1.8V 34 0.3V 1.2V 0.38V 1.8V 3 0.35V 1.8V 29 0.37V 0.7V 15 20 19 8 0.18V 1.12V 17 0.32V 0.8V 0.28V 1.8V 25 0.44V 0.58V BOTTOM面 1 22 0.32V 0.8V 24 0.38V 1.8V 0.59V 3.2V 32 39 0.37V 1.8V 0.37V 1.8V 27 U300 37 0.45V 0.91V 0.54V 1.8V 1 0.38V 1.8V 2 2018/11/26 第1页，共1页