75
107P2 CM 25 GSIII
Repair Flow Chart (Continued)
20 asymmetry EW
output
30K<freq.<92KHz
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,pin24 determin frequency
22,23,24
VAGC,VREF,VCAP
21 EHT_compen.
to 7503 pin30
for soft start
compensate for the V_size
owing the load variation
1.compare the HFLBand control the phase of HDRV
2.softstart
compensate for the H_size owing the load variation
31 EHT_compen.
32. Focus
to 7642 for the V dynamic focus
Hunlock pin is floating while pll1(pin26) is
unlock in searching mode
17. Hunlock
18. IIC sda = hi
19 IIC scl = hi
initial fail could be these of IC
7503,7301,7304,7804