Audio Circuit Adjustment Method - DAEWOO ELECTRONICS DV-F882DY-C Service Manual

2-2. AUDIO CIRCUIT ADJUSTMENT METHOD

1. AUDIO RECORD BIAS
Adjustment Parts
R290
• Connection Method
S/N: 97P65064HA
HEAD AMP PCB
• Adjustment Procedure
1) Set the TV/LINE to LINE mode.
2) Set the input to open mode
3) Connect the Audio level meter to both TP1 and TP2
4) After inserting a blank tape, record in SP mode.
5) Adjust R290 to obtain 3.0 mVrms.
Checking Point Measuring Equipment
A/C Head PCB
TP1(+), TP2(-)
3.0mVrms
Test Tape
Audio level meter
R290
A/CHEAD
TOP VIEW
4
Input Signal
Rec None signal
Audio LEVEL METER
+
–
TP1
TP2 (+)
(–)