Audio - Daewoo DVN-14F6N Service Manual

2. AUDIO

2-1) AUDIO CIRCUIT ADJUSTMENT METHOD
Item Mode
Audio
REC
Record Bias
Location of Adjustment Parts
MAIN PCB
PY09
DECK A'S
MAIN PCB PARTS SIDE
• Adjustment Procedure
1. Preparation
1) Set REC BAIS to ON mode using REMOCON. (then, front pannel's REC LED will be lighted up.)
2) Supply the signal in the OPEN mode.
3) Connect the Audio level meter to RC HEAD 10Ω (on solder side).
2. Adjustment
1) Adjust RU57 to obtain [3.0]mVrms.
3. Adjustment Inspection Standard : [3.0 ± 0.1mVrms]
• If you don't have Service Remocon, You can set this rec mode by inserting a tape (with record top) and pushing rec
button.
Adjustment parts
RU57
PY05
Y/C
BOARD
RU57
RC HEAD
Check point Test equipments
RC HEAD 10Ω Audio level meter
Observation Waveform
Horizontal Axis :
Vertical Axis :
31
Test tape Input signal
Blank tape