Philips 109P2 CM25 GSIII Service Manual page 47

17. Hunlock
18. IIC SCL = hi
19 IIC SDA = hi
20 asymmetry EW
output
21 EHT_compen.
22,23,24
VAGC,VREF,VCAP
26,27,28,29
Hpll1,Hbuf,Href, Hcap
30. PLL2
31 EHT_compen.
32. Focus
Back
Repair Flow Chart
Hunlock pin is floating while pll1(pin26) is
unlock in searching mode
initial fail could be these of IC
7421,7701,7781,7336
to 7503 pin30
for soft start
compensate for the V_size
owing the load variation
pin22 determin the AGC
pin23,pin24 determin frequency
pin26 determin the
pll1 loop filter
pin 27,28,29 H-Freq
working range
1.compare the HFLBand control the phase of HDRV
2.softstart
compensate for the H_size owing the load variation
to 7603 for the V dynamic focus
109P2 GS3 CM25
9
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50Hz< freq. <160Hz
30K<freq.<110KHz
47
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