80 |
| 107T5 |
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17.Vblk
Repair Flow Chart (Continued)
Vblk pin is floating while pll1(pin26) is unlock in searching mode
30.IIC scl = hi
31IIC sda = hi
18 EHT_compen.
19,20,22
Voscf,Vagc,Vcap
9,8,6,4 PLL1,RO,CO, Hoscf
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
50Hz< freq. <160Hz
30K<freq.<71KHz
5. PLL2
1.compare pin 12 and control the phase of HDRV 2.softstart 14, 15, 16,
17 EHT_compen. |
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32. Focus
to 7616 for the V dynamic focus