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6#
发表于 2024-3-31 18:31:35
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只看该作者
来自: 广西 来自 广西
今天修到一片华硕B450M-DRAGON REV: 1. 0 主板,故障现象:开机跑00不显示,测全板供电发现没有CPU供电,它是由集成块ASP1106GGQW提供:测得
ASP1106GGQW 28脚供电:5V
ASP1106GGQW 37脚 P_VRM_EN_10 开启:0V(正常3.3V)
分析:ASP1106GGQW 37脚 P_VRM_EN_10 开启:0V是不正常的,跑线路画电路图它是由一个N沟场管和一个NPN三极管组成,测NPN三极管B脚1。75V不正常应为0.65V,拆下三极管测管已经损坏用一个印丝T04 三极管代换上去,OK。开机“嘀”一声进系统拷机24小时没有问题故障修复!!
附ASP1106GGQW引脚功能
1脚 P_VCORE_PWM4_10第四相CPU供电PWM输出
2 P_VCORE_TONSET_10
3 P_VCORE_ISEN2P_10
4 P_VCORE ISEN2N_10
5 P_VCORE_ISEN1N_10
6 P_VCORE_ISEN1P_10
7 P_VCORE_ISEN3P_10
8 P_VCORE_ISEN3N_10
9 P_VCORE_ISEN4N_10
10 P_VCORE_ISEN4P_10
11 P_VCORE_FB+_10
12 P_VCORE_FB_10
13 P_VCORE_COMP_10
14 P_VRM_RGND_20
15 P_VCORE_IMON_10
16 P_VRM_V06_20
17 P_VDDNB_IMONA_10
18 P_VDDIO
19 P_VCORE_SVIDOK
20 H_SVC
21 H_SVD
22 H_SVT
23 P_VCORE_OFS_10
24 P_VDDNB_OFSA_10
25 P_VRM_SET1_10
26 P_VRM_SET2_10
27 P_PROCHOT
28 P_VRM_VCC_20 蕊片供电
29 P_VRM_IBIAS_10
30 P_VDDNB_COMPA_10
31 P_VDDNB_FBA_10
32 P_VDDNB_FB+_10
33 P_VDDNB_ISENA2P_10
34 PVDDNB ISENA2N 10
35 P_VDDNB_ISENA1N_10
36 P_VDDNB_ISENA1P_10
37 P_VRM_EN_10 开启
38 P_VDDNB_PWRGD_10
39 P_VCORE_PWRGD_10
40 P_VDDNB_TONSET_10
41 P_VDDNB_PWM2_10
42 P_VDDNB_PWM1_10
43 P_THERMTRIP_4
44 P_VRM_SMB_DATA
45 P_VRM_SMB_CLK
46 P_VRM_DVD_10
47 P_VRM_TSEN2_10频率检测2
48 P_VRM_TSEN1_10频率检测1
49 P_VRM_QR_IND
50 P_VCORE_PWM1_10第一相CPU供电PWM输出
51 P_VCORE_PWM2_10第二相CPU供电PWM输出
52 P_VCORE_PWM3_10 第三相CPU供电PWM输出
53脚 DGND
54 DGND地
55 DGND
56 DGND
57脚 DGND
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