Teac A-5500 - Phones Output

PHONES OUTPUT CHECK
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MINIMUM INPUT LEVEL SETTING
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Place OUTPUT control at the Specified level setting
(400 Hz signal at -8 dB).
Connect an 82 non-inductive resistor across the headphone jacks.
Connect Test-Set across the resistor.
Test-Set should indicate -24 dB +1 dB.
Connect an AF oscillator to the LINE IN jacks.
Place MONITOR switch in SOURCE, RECORD EQ and BIAS switches
in HIGH position, and MODE L, R in ON position.
Apply a 400 Hz signal -18 dB to the LINE IN jacks.
Turn LINE control fully clockwise (MAX). Adjust VR-451/452
on the MIC MIXING PC BOARD for approx. 580 mV at the Test Point
(T-P) on the DOLBY ENCODER PC BOARD (Left and Right channel).
. Check for -8 dB at the OUTPUT jacks.
DOLBY ENCODER
Fig. 11-5 580 mV Test Points (DOLBY ENCODER PC BOARD)
SPECIFIED INPUT LEVEL SETTING
6. Apply a 400 Hz signal at -8 dB to the LINE IN jacks.
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Mie METER LEVEL SET
Adjust the LINE control for -8 dB at the OUTPUT jacks.
NOTE: Do not disturb the Specified Input Level position on these
controls until the remaining checks and adjustments are completed.
The difference between the channels must not exceed +2 dB as in-
dicate on the Test-Set. Adjust VR-451/452 (L-ch/R-ch) for identical
Levels.
Verify OUTPUT Controls at the Specified Output Level.
. Place the MONITOR switch to the SOURCE position.
. Apply a 400 Hz signal at -8 dB to the LINE IN jacks.
. Adjust VR-351/352 (METER PHONE PC BOARD) for 0 VU on
the VU meter.