Pinout

Pin #	Assignment
3	G1 Red Pin
5	Heater (F1)
6	Heater (F2)
10	G2 Red Pin
11	Red Pin

Note: If you only see one assignment or reused pin for G1 (or G2), it means there is only a single G1 (or G2) grid shared across all cathodes. This is called "common G1" (or "common G2"). In this case, when using a Universal Adapter (UA), you only have to hook up one G1 (or G2) lead on your tester to connect all cathodes' G1 or G2 properly.

Sencore CRT Tester Info

Tester Model	Heater	Socket	Bias	Video
CR-7000	-	UA	52V	PROJ
CR-70	-	3	52V	PROJ
CR-31	-	-	A	N/A