No Fl Display - Pioneer VSX-530-K Service Manual

1
A

No FL DISPLAY

This is just for general reference and does not including every single case.
No FL DISPLAY
Are the voltage 2.3 Vac to 2.5 Vac?
(FRONT Assy CP703 pins 1, 3)
No
B
Are the voltage 2.28 Vac?
(FRONT Assy FLT701
pins 1, 2, 38, 39)
No
Are the voltage -30 V?
(FRONT Assy CN704A
pins 3, 4)
Yes
C
Is the voltage -30 V?
(FRONT Assy C728 - side)
Yes
Is the voltage 3.3 V?
(FRONT Assy C730 + side)
Yes
Is damage in FLT701?
D
Yes
Replace FLT701.
E
F
10
1
2
Is the voltage 2.27 Vac
No
to 2.28 Vac?
(Transformer orange wire)
Yes
Replace FLT701 or
replace FRONT Assy.
Yes
Check FLT701, R779, R780 or
replace FRONT Assy.
Are the voltage -30 V?
No
(CPU Assy CN704B
pins 3, 4)
Yes
Replace FFC.
No
Check L701, IC701 or
replace FRONT Assy.
No
Check Q702, Q703, R777, R778 or
replace FRONT Assy.
No
Replace FRONT Assy.
VSX-530-K
2
3
No
Replace Power transformer.
Are the voltage -30 V?
No
(CPU Assy CN209A
pins 21, 22)
Yes
Replace CN209A or
replace CPU Assy.
3
4
Are the voltage -30 V?
No
(MAIN Assy CP16
pins 21, 22)
Yes
Replace CP16.
Check Q17, R64, R65, R66, D23,
ZD24, ZD25 on MAIN Assy
or replace MAIN Assy.
4
No