Panasonic PV-4601 A Service Manual page 19

3.2.10. Function of important Test Points
3.2.11. Method for Manual Loading / Unloading of VCR
Turn the Loading Pulley of the Motor Block Ass'y (shown in
(for loading) or clockwise (for unloading) as viewed from the Front Side.
Note:
DO NOT apply any voltage to the Terminals of the Loading Motor Unit on the Motor
Block Ass'y.
Function of important Test Points
TP3001 Video signal to Jack
TP3002 PB/REC video envelope signal
TP3009 Video signal from Jack
TP4001 Audio signal from Jack
TP4002 Audio signal to Jack
TP6001 Service Test Point (inhibit sensors)
TP6003 defeat Auto tracking function
(connect to +5V(TP6009))
TP6009 +5V
*TP6010 AIP CTL signal
*TP6011 IC6001 judgment
TP6204 Cylinder PG/FG
TP6205 Head SW
TP6207 PB control pulse
TP6301 IC6301 judgment
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Fig. 6) counterclockwise