Sound Signal Circuit between Video Terminal and Television Display: Procedure

1. Disconnect the Q13 television display assembly connector.
2. Disconnect the O25 video (video adapter) terminal connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   Q13-24 (OPEN) - O25-8 (ADPG)	Always	Below 1 Ω
   Q13-7 (AUXR) - O25-1 (VAR+)	Always	Below 1 Ω
   Q13-8 (AUXL) - O25-2 (VAL+)	Always	Below 1 Ω
   Q13-23 (SG7) - O25-3 (VA-)	Always	Below 1 Ω
   Q13-24 (OPEN) - Body ground	Always	10 kΩ or higher
   Q13-7 (AUXR) - Body ground	Always	10 kΩ or higher
   Q13-8 (AUXL) - Body ground	Always	10 kΩ or higher
   Q13-23 (SG7) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2