Adjustment - Marantz CDR510/F1B Service Manual

4. ADJUSTMENTS
1) Balance Input Attenuate Level L, R Adjustment
• Necessary Equipment
Audio Signal generator (Correspond to Balance Out )
Audio Analyzer or Noise Meter
CD-RW for Audio recording
• Adjustment procedure
Attention :
When adjustment is insuffi cient, Input Sensitivity and
Channel unbalance of BALANCE INPUT become Spec out.
1. Set INPUT SELECT switch to "BALANCED IN"
2. Connect output of Audio Signal Generator to ANALOG
BALANCED IN. Connect Audio analyzer or Noise meter to
ANALOG OUT.
3. Press POWER button to turn on the unit, insert a
un-fi nalized CD-RW disc to CD-Recorder.
4. The display show the type of disc you inserted. Press
INPUT button and select "ANALOG". (Press INPUT button
repeatedly until the selected "ANALOG" appears the
display)
5. Press REC MODE Button and select "REC Ext MAN".
6. The display show , and the unit become REC/PAUSE
mode.
7. Turn REC LEVEL(JOG) knob , and adjust recording level to
"0dB"
8. Adjust output level of Audio Signal Generator to "1 kHz /
4.887 Vrms (+ 16.0 dBu)", and a signal is outputted.
9. Adjust TRIM (variable resistance) of the L channel with the
driver so that the reading numerical value of analyzer or
Noise meter to become "1.8 Vrms ± 0.1 Vrms".
10. After that, adjust TRIM of the R channel with the driver to
become "± 0.07 Vrms "toward the L channel.
•
Connection
OUTPUT
Audio analizer or Noise meter
INPUT
Switch to
BALANCED IN
5
Audio Signal Generator
1 kHz / 4.887 Vrms