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Check Preconditioner
In normal working conditions output
of preconditioner = 395V on fuse
1004
Tip, it is also possible to check the
preconditioner without load by
removing fuse 1004
Check +25V Hot
preconditioner output = 24,5V
Output of D6600 =255V
V start-up pin 16 IC7650 = 395V
Check on IC7650
•Pin 12 Vcc = 14,5V
•Pin 1 Vref = 5V
•Pin 13 Oscilator
Pin 11 Gate
Voltage feedback pin 3 VFB =5V
Current sense pin 6 CS
9
Chapter 09
page
P5
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