Pioneer SC-68 Service Manual page 32

1
A
NO FL DISPLAY
This is just for general reference and does not including every single case.
No FL Display
Yes
Dimmer?
No
B
JP3001 6-7 pin 4.3Vac?
Yes
C
JP3001 5 pin -30V (VF)?
JP3001 4 pin +5V?
Yes
V3301 1-62 pin 4.3Vac ?
Yes
Check DISPLAY ASSY
D
X3201 oscillating
Yes
V3301(FL Display) damage ?
Yes
Replace V3301
E
F
32
1
2
Diagnose the circuits
"FL OFF"LED No
(arround D3208)
Light on?
or replace DISPLAY ASSY
Check the path of FL AC1 and 2
DISPLAY ASSY
No

INTERFACE ASSY

ASSY FRONT BRIDGE ASSY

REG ASSY MAIN TRANS
No
Check the path of V+5_V,-VF
(Signal path is same as FL AC1 and 2)
No
Check FL AC1, 2 power supply
path or replace DISPLAY ASSY
No
Replace X3201, IC3201 or DISPLAY
ASSY
No
Diagnose arround IC3201 or replace
DISPLAY ASSY
2
3
All NG
F-IN BRIDGE ASSY

FB-CONNECT

Other results
Other results
All NG
SC-68
3
4
Replace Transformer
Diagnose or replace
NG ASSY
Diagnose REG ASSY
(arround IC7601,D7625)
or replace REG ASSY
4