Samsung MX-F730 - No Power

4.Troubleshooting
4.1.1.NoPower
No
No
No
No
No
Che ck MAIN P CB
UCN1 10# : VF5.1V.
Che ck MAIN P CB
UIC1 P IN53:5.1V.
No P owe r
Che ck patte rn or re place
MICOM IC.
Check VFD
Voltage on MAIN PCB
PCN2 6, 11# .
(1)
Che ck CLOCK circuit in
MAIN P CB X-TAL1
pa rt ok?
Che ck MAIN P CB
CN2 2~3# (5.1V).
Che ck or re place S MPS.
Che ck s igna l
a nd signa l pa tte rn.
Che ck or re place S MPS.
No
Che ck or re place S MPS.
Ye s Ye s
Ye s
Ye s
Ye s
Che ck MAIN P CB
VFQ1 ;VFQ2 .
* Re fer to wa ve pa tte rn
image of Fig. 4-1.
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