Mixer Section Check And Adjüstmeñt; Mic In-^Access Send; Line In-Access Send - Teac TASCAM 388 STUDIO 8 Operation & Maintenance Manual

1-4. MIXER SECTION CHECK AND ADJUSTMEIMT
1-4-1. MIC IN—^ACCESS SEND
1.Plug an AC voltmeter into the ACCESS
SEND jack.
2. Set the INPUT switch to MIC and the EQ
knobs to center position.
3. Apply a 1 kHz, -60 dB (1 mV) signa! to the
MiC IN XLR connector on the back panel.
4. Adjust the MIO TRIM for a -lOdBV {0.3 V)
reading on the voltmeter.
5. Check all remaining channeis in the same
manner.
1-4-2. LINE IN—i-ACCESS SEND
1. Apply a 1 kHz, -10 dBV (0.3 V) signa! to the
LINE !N jack.
2. Measure the leve! at ACCESS SEND jack.
It should be -10 dBV (0.3 V).
3. Check that the OverLoad LED lights at 25 dB
±1 dB (5 V to 6.3 V) above nominal leve! of
-10 dBV (0.3 V) at ASSESSSEND.
4. Confirm that the output signa! is not dis
to rted.
■■inTTil
-FCM8V
LlÁKfSS
SEND RCV
(INPUT PC0I I CH 8CH
SENO RCV
MIC IN'í
■
lL.
_TAP_E_pyT^
- lOflev 5
I
(NPJT PCB) I CH 8CH
REF. NO.
R101
R121
R141
R161
FUNCTION
TRK/PGM 1
TRK/PGM 2
TRK/PGM 3
TRK/PGM 4
TRK/PGM 5
TRK/PGM 6
TRK/PGM 7
TRK/PGM 8
R261 STEREO
L/AUX
R281 STEREO R/EFFECT
Fig. 1-4-1 Meter Adjustment