2010 SSB/Sync adjustment
[ Update Dec. 2000: My 2010 seems to like Vref in the 1.85 - 1.87 volt range. ]

Background: VT1 adjusts SSB reference voltage, VT2 adjusts SYNC reference voltage. These go to IC-10 pins 4,2, and are switched out on pins 1=3. IC-10 pins 1=3 are connected to a 6-pin connector at bottom edge of shield. You can get a probe on pin 6 to measure the voltages without removing shield. See service manual component layout.

I'm so glad I measured these before I started! SSB= 1.85, Sync= 1.81 volts. Radio set at xxxx.0 for adjustment. Note: Sync changes with tuning, so make sure you are on xxxx.0 when you measure.

Following the procedure in the Sony service manual, I set SSB for 1.5 volts, tweaked the cap, and adjusted sync. Result was that sync-lock-center was way off. Most of the lock range was on USB. Repeating the procedure using SSB=1.6v, lock center was still off. Using SSB=1.7v produced OK lock center, but SYNC voltage was high by comparison. Using SSB=1.8v, and repeating the procedure yet again produced matching SSB/SYNC reference voltages. Gee, you think maybe Sony knew that when they aligned it? 

Unless my unit is unusual, it looks like the service manual is off.