Philips V30 107T50 Service Manual page 80

80 107T5
9
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17. Vblk
30. IIC scl = hi
31 IIC sda = hi
18 EHT_compen.
19,20,22
Voscf,Vagc,Vcap
9,8,6,4
PLL1,RO,CO, Hoscf
5. PLL2
17 EHT_compen.
32. Focus
Repair Flow Chart (Continued)
Vblk pin is floating while pll1(pin26) is
unlock in searching mode
the initial sequence of IIC IC
7501,7331,
compensate for the V_size
owing the load variation
Pin20 determin the AGC
Pin19,pin22 determin frequency
Pin9 determin the
pll1 loop filter
pin 8,6,4 H-Freq
working range
1.compare pin 12 and control the phase of HDRV
2.softstart 14, 15, 16,
compensate for the H_size owing the load variation
to 7616 for the V dynamic focus
50Hz< freq. <160Hz
30K<freq.<71KHz