Philips 107B30 Service Manual page 43

M36 107B3 GS_3
52
9
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17. Hunlock
18. IIC scl = hi
19 IIC sda = hi
21 EHT_compen.
22,23,24
VAGC,VREF,VCAP
26,27,28,29
Hpll1,Hbuf,Href, Hcap
30. PLL2
31 EHT_compen.
32. Focus to 7685 for the V dynamic focus
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Repair Flow Chart (Continued)
Hunlock pin is floating while pll1(pin26) is
unlock in searching mode
the initial sequence of IIC IC
7501,7301,7304
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 HFLB and control the phase of HDRV
2.softstart
compensate for the H_size owing the load variation
50Hz< freq. <160Hz
30K<freq.<71KHz
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