A good service manual with lots of info and a very fair price
Text excerpt from page 8 (click to view)
BALANCE/FADER/BASS/MID/TREBLE : CENTER T.ADV/METAL/DOLBY NR : OFF No. ITEM INPUT SETTINGS TCC-153 10kHz OUTPUT SETTINGS SP OUT Connect an AC voltmeter to CN5 (X14-). ALIGNMENT POINTS Head azimuth screw (FWD/REV) VR1 (L) VR2 (R) ALIGN FOR Adjust so that output level in playing FWD and REV becomes maximum each. 388mV FIG.