OEC 9800C-Arm - Page 292

Calibration
HF_SYNC and RAMP Signals Out of Sync
3. Adjust R139 counterclockwise until the two signals come out of sync again. Note the position of the pot.
4. Set R139 midway between the two out-of-sync points. Verify that both signals are synchronized with R139 in this position.
8
Service Periodic Maintenance
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Schematics Illustrated Parts Installation