8X TOP故障维修指引V1.0(3).xlsx 返回目录 上电时序图 信号脚 量测点对 二极 应序号 体 电压 实物点测图 C1222 0.6V 1.8V 1 C1401 0.35V 1.8V 0.36V 1.34V 9 0.38V 1.19V 22 24 0.61V 2.82V 16 25 0.51V 3.2V 7 0.31V 1.95V 13 0.42V 0.8V 0.25V 0.8V 11 0.38V 2.95V 21 0.36V 1.79V 1.8V 0.34V 1.8V 0.36V 20 0.38V 1.8V 1.79V 0.33V 26 23 15 28 0.89V 0.45V 14 全景图 TOP面 2 4 3 PWR_HOLD PMU_RST_OUT_N (SYS_RST_N) SOC_RST_PMU_N (POR_RST) PWRON_N VOUT_PMUA (LDO_PMUA) VOUT34_3V45 (LDO34) VBUCK3_1V95 (BUCK3) VBUCK2_1V2 (BUCK2) OUT26 (LDO26) VOUT0_0V8 (LDO0_1) VBUCK0_0V8 (BUCK0) VOUT30_0V8 (LDO30) VBUCK4_0V8 (BUCK4) VOUT2_1V8 (LDO2) VOUT18_1V8 (LDO18) VOUT24_2V8 (LDO24) VBUCK1_1V12 (BUCK1) VOUT37_0V6 (LDO37) VOUT6_0V9 (LDO6) VOUT5_1V8 (LDO5) VOUT27_1V8 (LDO27) VOUT36_1V2 (LDO36) VOUT29_1V8 (LDO29) VOUT23_3V2 (LDO23) VOUT15_2V95 (LDO23) LDO_BUFF (LDO_BUF) SYS_CLK_19M2 (SYS_CLK_19M2) ABB_CLK_38M4 SYS_CLK_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 返回目录 C1221 0.38V 1.8V J2904 2.13V 1.8V C1039 0.27V 1.08V C1116 0.53V 3.45V C1123 0.34V 1.95V C1130 0.25V 1.2V C1044 0.36V 1.35V C1046 0.16V 0.69V C1127 0.25V 0.8V C1033 0.24V 0.79V C1122 0.42V 0.8V C1038 0.26V 1.8V C1009 0.33V 1.79V C1019 0.61V 2.82V C1126 0.071V 1.1V C1022 0.25V 0.62V C1047 0.36V 0.91V C1040 0.38V 1.8V C1013 0.36V 1.79V C1006 0.38V 1.19V C1045 0.36V 1.8V C1018 0.31V 3.2V C1034 0.38V 2.95V C1015 0.34V 1.8V C701 0.38V 0.89V C1201 0.45 0.89V C704 0.37 0.9V 2 4 1 ` 0.6V 1.8V U1001 1.8V 0.26V 17 0.071V 1.1V 0.62V 0.25V 1.08V 0.27V 0.69V 0.16V 3.45V 0.53V 18 5 10 6 0.24V 0.79V 12 19 0.36V 0.91V 0.25V 1.2V 8 0.38V 1.8V 3 3 0.35V 1.8V 2 2.13V 1.8V 4 0.38V 0.89V 27 0.37V 0.9V 29 BOTTOM面 1 2019/3/24 第7页，共44页