Troubleshooting
6Ć56 MTG100 & MTG300 MPEG Generator Service ManualReplace F040 on the A40 MISC
(Power Distribution & Interface)
board.
(See Figure 6Ć36)
Yes
Is J40 on the A40
MISC board (see
Figure 6Ć36) at GND
when the ON/STBY
button is pressed?
No
No
Is AC input to
5 V power
supply?
Check A35 Power Switch board,
A30 Front Panel board, W250, and
W310.
Yes
No
Are pins 3 and 4 of
J041 on the A40
MISC board (see
Figure 6Ć36) at +5 V?
Yes
Replace 5 V power supply.
2
Check W010, W011,W012, W020,
the AC Inlet, and the power switch.
Figure 6Ć26: Troubleshootingprocedure (4)