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Repair Flow Chart (Continued)
9
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107T5
30K<freq.<71KHz
5. PLL2
Pin9 determin the
pll1 loop filter
pin 8,6,4 H-Freq
working range
50Hz< freq. <160Hz
9,8,6,4
PLL1,RO,CO, Hoscf
Pin20 determin the AGC
Pin19,pin22 determin frequency
19,20,22
Voscf,Vagc,Vcap
18 EHT_compen.
compensate for the V_size
owing the load variation
1.compare pin 12 and control the phase of HDRV
2.softstart 14, 15, 16,
compensate for the H_size owing the load variation17 EHT_compen.
32. Focus to 7616 for the V dynamic focus
Vblk pin is floating while pll1(pin26) is
unlock in searching mode
17. Vblk
30. IIC scl = hi
31 IIC sda = hi
the initial sequence of IIC IC
7501,7331,
80