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4.11 键盘背光故障
测试点
电路图
LD901
SSC-SWTS1007
SUB_BACKLIGHT
VBAT
LD902
SSC-SWTS1007
R918
R918
470
470
Q902
2
UMT2222A
R921
100K
VBAT
LD1301
SSC_TWH104_HL
LD1304
SSC_TWH104_HL
LD1308
SSC_TWH104_HL
LD1310
SSC_TWH104_HL
LD1302
SSC_TWH104_HL
LD1303
SSC_TWH104_HL
LD1305
SSC_TWH104_HL
LD1306
SSC_TWH104_HL
LD1307
SSC_FR104_II1
LD1309
LEGG_S14G
R1323
(AVLC14S02050)
R920
1K
C914
VA909
27P
AVLC14S02050
R1302
910
R1302
910
R1302
910
R1302
910
R1302
470
R1302
470
R1302
470
R1302
470
R1302
2.2K
R1302
680
1K
VA1301
R1327
NA
C1309
100K
27P
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4. 故障解决
MAIN_BACKLIGHT
2
Q903
UMT2222A
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