Philips V40 109B6 - Page 83

Repair Flow Chart
109B6 CRT
83
17. Hunlock
Hunlock pin is floating while pll1(pin26) is
unlock in searching mode
18. IIC scl = hi
19. IIC sda = hi
initial sequence of IIC IC
7501,7301,7304
22,23,24
VAGC,VREF,VCAP
pin22 determin the AGC
pin23,pin24 determin frequency
50Hz< freq. <160Hz
26,27,28,29
Hpll1,Hbuf,Href, Hcap
pin26 determin the
pll1 loop filter
pin 27,28,29 H-Freq
working range
30K<freq.<96KHz
1. PLL2
1.compare the HFLB and control the phase of HDRV
2.softstart
32. Focus
to 7631 for the V dynamic focus
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