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Back to Measurement Equipments 3

FM-AM Standard Signal Generator MSG-2570 ( Meguro )

Fig1. Front view.

[Features]

0.05-30MHz , 53-131MHz , 100Hz step.
-16 to 114 dbu , 1db step.
Modulation FM 0.5-75kHz, AM 0-99%
99 memories.

[Trouble Shoots]

Trouble Cause Repair

All LED was displaying the random value. The voltage of the back up battery had been very low . Reset the logic board.

Any of the keys didn't work correctly. Contacts of the keys were all oxidized. Polished all contacts of the keys.

Internal 400Hz modulation didn't work. An operational amplifier was broken. Replaced an operational amplifier.

Trouble	Cause	Repair
All LED was displaying the random value.	The voltage of the back up battery had been very low .	Reset the logic board.
Any of the keys didn't work correctly.	Contacts of the keys were all oxidized.	Polished all contacts of the keys.
Internal 400Hz modulation didn't work.	An operational amplifier was broken.	Replaced an operational amplifier.