Power Board - HP f1723 Service Manual

10. Power Board

Check output voltage +22.5V, +12V
Check power switch is turn on or not.
Check power cord (P801), signal
cable (P302), P802, P803, CN102,
CN103 is connected right or not.
Check C805 is about DC140V-330V
Check C807 is over 10V or not.
Check pin 6 of I801 have same
Check pin 1 of T802 have same
Check peak voltage of R811 triangle
pulse is up to 1 volt or not.
Check D809, D810,C816, C821,
T802 have same short circuit, or the
output +22.5V, 12.5V is over load.
Check feedback circuit around I802,
I803 and the other components and
is right or not.
Yes
No
No
Yes
No
Yes
or not.
Check F801, D801, P801 and repair
No
Yes
Check R805, R803, I801 and repair
No
Yes
pulse or not.
No
Yes
pulse or not.
No
Check Q803, R813, R814, D806,
Yes
Check D804, R807 and repair them.
No
Yes
No
Yes
repair them.
f1723 / FP7317 / L1702 / vf17 / FP17
It is not power board problem.
Turn switch on.
Connect it right
them.
them.
Check peripheral co,of I801 and
repair them.
R812 and repair them.
Repair them.
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