25
VSX-1128-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
No FL Display
Is the voltage 5.0 to 5.8 Vac
CN3004 pins 1, 2, 3 on the
FRONT Assy?
No FL Display
Dimmer?
Yes
Yes
Replace D3009, Q3006, Q3013
or replace the FRONT Assy.
No
No
No
Is the voltage 5 Vac FLT3001
pins 1 to 62 on the
FRONT Assy?
Yes
Replace FLT3001
or replace the FRONT Assy.
Yes
Replace FFC.
Yes
Replace the CPU Assy.
"FL OFF" LED light on?
This is just for general reference and does not including every single case.
Check FLT3001, R3021, R3022, R3025, R3026,
L3007, ZD3001, or replace the FRONT Assy.
No Check the transformer orange
wires voltage 5 to 6 Vac.
No
Replace the power transformer.
Yes
No
Is the voltage -30 V CP3001
pin 25 on the FRONT Assy?
Is the voltage -30 V CN304
pin 25 on the CPU Assy?
No
No
Is the voltage -30 V CP12
pin 14 on the MAIN Assy?
Replace Q17, R64, R66 or
replace the MAIN Assy.
Yes
No
Is the voltage -30 V C3032
- side on the FRONT Assy?
Yes
No
Is the voltage 5 V C3096
+ side on the FRONT Assy?
Yes
Is there 5 MHz output from
X3001 on the FRONT Assy?
Yes
Does FLT3001 have damage?
Yes
Relpace FLT3001.
Relpace D3033, D3034, Q3011, Q3009,
IC3001 or replace the FRONT Assy.
Relpace L3008, IC3001 or
replace the FRONT Assy.
No
Relpace X3001, IC3001 or
replace the FRONT Assy.
No
Relpace the FRONT Assy.
