**系列产品故障板维修锦集，适用机型： 一、故障现象：室外机电控板电源灯不亮，测无 5V 电压 二、开关电源电路工作原理分析 1、电路原理图 2、实物图 P35RTO555P11/INT1 EE 数据34P03OPT3W28P02OPT2U-27P05OPT5U30P06PWI0CLK31P07PWO0SIGNAL32P51/AN1 LED24P52/AN2 LED35P53/AN3 电压16P54/AN4 环温7P55/AN5 盘管8P56/AN6 排气9P01OPT1V-26P45/SNI2*2 相位W1P20/TIN141P21/TO142P22/PWI143P23/PWO144P24/IN0 风机145P25/IN1 风机246P26/IN2 四通阀47P27/IN3 主继电器48P43SNI0相位U63P30RTO050P13/INT3 EE 时钟36P32RTO252P33RTO353MD2模式221C57P61/SOT1 通讯输出15P62/SCK1 强制运行16P63INT7电压217P60/SIN1 通讯输入14Vss49MD0模式018P42SCK062P41SOT0反馈61P44SNI1相位V64Vss24P00OPT0W-25P31RTO151P34RTO454MD1模式120RSTX复位19P40SIN0PFC控制60X1振荡23P36PPG158P37PPG059P04OPT4V29AVSS A/D 地13AVR A/D 参考电平12AVCC A/D 电源11P57/AN7 电流10X0振荡22P17/FRCK SELECT40P16/INT6/TO0 CLR39P15/INT5/TIN0 UP38Vcc56P14/INT4 DOWN37P50/AN0 LED13P46/PPG2 压机壳温开关2P12/INT2/DTTI1 IPM 保护35P10/INT0/DTTI033*IC12KR12KR32KR2LED1LED3LED21324MX11 2 3 4 5 6 7 8CHECKCN50110kR50210kR50310kR504+5V103C502103C501103C503A01A12A23GND4SDA5SCL6WP7VCC824C01AIC401104C40110kR40210kR401104C50810kR51010kR50110kR80210kR50510kR50610kR50712GAIKICN70212COILCN70312COMPCN704104C7021u F/16VCE7021u F/16VCE7031u F/16VCE70451k1%R70451K1%R7066.8k 1%R708190UHL701GAIKI(CN12.2)COIL(CN10.1)COMP(CN9.1)GAIKI(CN12.1)COIL(CN10.2)COMP(CN9.2)YELBLKWHT104C701104C705104C707104C709103C706103C708103C710RED12HEATDCN70168k1%R702104C703103C704AKCETLP521PC6021.8k R6024.7k/1WR6014.7kR6071N4007D601102C604102C6031kTH60130VZD601AKCETLP521PC60110kR604AC N123PIN3CN601AC IN2(CN13.1)1kR606SI (CN13.2)103C602WHTSI AC N (CN13.3)103 63VC601213MC34064IC5011u F/16VCE50120KR508103C504104C5053421RY202T3.15A250VACF20112SVCN202SV(CN17)SV(CN17)BLK+12V+12V104/120RC201BLKYELAC NAC L OUT3421RY201TH201AC L IN1 2 3 4 5 6CN201电子膨胀阀1234567XP7-1CN502150RR509123456DC FAN MCN301+15V-DCFAN4.7KR30610u /50VCE3021kR305Comment: 10kR3...
