105S2 CM23 GSIII
Repair Flow Chart
48
20 asymmetry EW output
30K<freq.<70KHz
30. PLL2
pin26 determin the pll1 loop filter
pin 27,28,29 H-freq working range
50Hz< freq. <160Hz
26,27,28,29
Hpll1,Hbuf,Href, Hcap
pin22 determin the AGC
pin23 & 24 determin the frequency
22,23,24
VAGC,VREF,VCAP
21 EHT_compen.
to 7501 pin30
using for soft-start
compensate V_size
because of load variation
1.compare the HFLB and control the phase of HDRV
2.softstart
compensate H_size
because of load variation
31 EHT_compen.
pin 17 is pulled to high while PLL1(pin26)
is not locked in searching mode
17. Hunlock
18. IIC sda = hi
19 IIC scl = hi
initial failure could be the following ICs
7301,7304,7801,7501
http://jdwxzlw.5d6d.com/?fromuser=华盛维修
家电维修资料网,免费下载各种维修资料