返回目录 上电时序图 信号脚 量测点对应 二极 序号 体 电压 C1202 0.6V 1.8V C1101 0.35V 1.8V 1 实物点测图 0.33V 1.8V 0.35V 1.8V 23 Nova3TOP故障维修指引V1.0.xlsx 文档密级 PWR_HOLD PMU_RST_OUT_N (SYS_RST_N) SOC_RST_PMU_N (POR_RST) PWRON_N VOUT_PMUA_1V8 (LDO_PMUA) VOUT35_CODEC_2V9 (LDO35) VBUCK3_1V95 (BUCK3) VBUCK2_1V2 (BUCK2) VOUT26_1V7/1V35 (LDO26) VOUT0_0V75 (LDO0_1) BUCK0 VBUCK4_0V75 (BUCK4) VBUCK6_0V75 (BUCK6) VBUCK8_1V8 (BUCK8) VOUT18_1V8 (LDO18) VOUT24_2V8 (LDO24) VBUCK1_1V1 (BUCK1) VOUT30_0V75 (LDO30) VBUCK7_0V6 (BUCK7) VOUT6_0V85 (LDO6) VOUT7_1V8 (LDO7) VOUT5_1V8 (LDO5) VOUT27_1V8 (LDO27) VOUT36_1V2 (LDO36) VOUT29_1V8 (LDO29) VOUT8_1V8 (LDO8) VOUT23_3V2 (LDO23) VOUT15_2V95 (LDO15) LDO_BUFF_1V8 (LDO_BUF) SYS_CLK (SYS_CLK_19M2) ABB_CLK_38M4 PMU0_CLK32_SYS (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 C1205 0.38V 1.8V J2902 1.63V 1.8V C1039 0.37V 1.8V C1024 0.53V 2.9V C1145 0.34V 1.95V C1143 0.2V 1.2V C1034 0.34V 实际 1.35V C1048 0.3V 0.69V / / / C1102 0.11V 0.67V C1154 0.25V 实际量不 到值 C1155 0.29V 1.8V C1032 0.33V 1.79V C1020 0.61V 3.0V C1140 0.086V 1.1V C1049 0.23V 0.75V C1153 0.25V 0.62V C1050 0.35V 0.85V C1030 0.38V 1.8V C1028 0.33V 1.8V C1035 0.35V 1.8V C1038 0.38V 1.2V C1037 0.34V 1.8V C1031 0.29V 1.8V C1019 0.38V 3.2V C1016 0.38V 2.95V C1042 0.34V 1.8V C701 0.38V 0.89V C1208 0.44V/ 0.78V 0.89V C703 0.37 0.9V 0.38V 1.8V 21 6 0.53V 2.9V 全景图 TOP面 3 4 2 5 BOTTOM面 1 0.34V 1.95V 7 14 1 0.29V 1.8V 0.6V 1.8V 13 19 0.25V 0.62V 10 0.3V 0.69V 22 24 28 15 29 26 0.38V 2.95V 0.38V 1.2V 0.33V 1.79V 0.29V 1.8V 0.34V 1.8V 27 0.38V 3.2V 20 12 0.35V 0.85V 0.11V 0.67V 17 0.086V 1.1V 0.34V 1.8V 25 0.25V 2 0.35V 1.8V 0.38V 0.89V 2 0.38V 1.8V 30 3 32 0.37V 0.9V 3 0.61V 3.0V 16 5 0.37V 1.8V 4 18 0.23V 0.75V 31 0.44/0.78V 0.89V ` 5 1.63V 1.8V 4 返回目录 2019/2/22 华为保密信息,未经授权禁止扩散 第7页，共50页