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Troubleshooting
MTG100 & MTG300 MPEG Generator Service Manual
6Ć61
Replace F040 on the A40 MISC
(Power Distribution & Interface)
board.
(See Figure 6Ć36)
No
Yes
Is the cable of the
rotary encoder
securely connected to
J300 on the A30 Front
Panel board?
Replace the rotary encoder.
Power Supply module
Turn on the PRINCIPAL
POWER SWITCH.
The Power Supply module is
OK.
No
Is pin 7of J030 on
A40 board at +5 V?
(See Figure 6Ć36)
No
Are pins 1, 2, and 3 of
J030 on A40 board at
+12 V? (See Figure
6Ć36)
Yes
No
Replace 12 V power supply.
Short between pin 1 and 2 of J040
on the A40 MISC (Power
Distribution & Interface) board (see
Figure 6Ć36).
Figure 6Ć31: Troubleshooting procedure (8)