Teac A-6100 Service Manual page 28

RECORD LEVEL SET
NOTE: The OUTPUT control must be at the specified output level
position {-8 dB at OUTPUT jacks), and the LINE INPUT controls
at the Specified Input Level Setting.
1. Apply a 400 Hz signal at -8 dB to the LINE IN jacks.
2. Thread a record Test Tape TEAC YTT-8013 on the unit, then set
BIAS switch to #1 position, Tape SPEED at HIGH.
3. Place the MONITOR switch in the TAPE position, LINE and OUTPUT
Controls to Specified Level position.
4. Adjust VR-303/306 for a -8 dB signal at OUTPUT jacks.
OVERALL FREQUENCY RESPONSE
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RECORD BIAS switch to the #1 position
1. Thread a blank TEAC YTT-8013 tape on the unit.
Place BIAS switch at #1 position (EQ SW at 1),tape SPEED at HIGH.
2. Apply a signal stepped from 30 Hz to 26 kHz at -28 dB to LINE IN
jacks and record it on the Test Tape.
3. Adjust L-301/303 for best response.
4. Repeat overall response check at LOW.
1 1 1 1 1 1
II
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OVERALL (YTT'8013)
:
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i-1—i—l i M M_l _ i_i...I_i_i i i mil_i _ i_i_
20 50 100 200 500 IK 2K 5K 10K 15K 20K 30K 50K
Fig. 11-7 Frequency Response Limits
-RECORD-
RECORD BIAS switch to the #2 position
5. Thread a blank TEAC YTT-8003 tape on the unit, place BIAS switch
at #2 position (EQ SW at 1),tape SPEED switch at LOW.
6. Apply a signal stepped from 40 Hz to 22 kHz at -28 dB to LINE IN
j acks.
7. If further adjustment is required, adjust VR-401 for best response.
8. Repeat overall response check at both speeds.
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