Yamaha EMX3000, Service Manual

Page: 27 / 82

27
EMX3000
INSPECTIONS
A. INSPECTION OF MIXER SECTION
1.
PREPARATIONS
• Unless otherwise specified, the signal to be applied should be 1kHz, -70dBs sine wave and the signal source impedance
should be 150 ohm. Also, the load resistance at each output terminal should be of the following values.
CH INSERT OUT, REC OUT 10k ohm
ST1,ST2,MONO,MONO1,MONO2,EFFECT 600 ohm
C-R/PHONES
40 ohm
• The signal level used in this specification is 0 dBs=0.775V
• Unless otherwise specified, set the controls as specified in 1-1 to 1-8 below.
1-1 CH INPUT (CH1~8)
GAIN trim Minimum
EQ(HIGH, MID, LOW) gain control CENTER
MNITOR(1, 2)level control Maximum
EFFECT level control Maximum
PAN control CENTER
Fader Maximum
PFL switch OFF
1-2 Stereo INPUT (9/10, 11/12)
A/B switch A
GAIN trim Minimum
EQ(HIGH, MID, LOW) gain control CENTER
MONITOR(1, 2) level control Maximum
EFFECT level control Maximum
PAN control CENTER
Fader Maximum
PFL switch OFF
1-3 ST SUB IN (1,2)
ST level control Maximum
MONITOR(1,2) level control Maximum
PFL switch OFF
1-4 TAPE IN
ST level control Maximum
PFL switch OFF
1-5 DIGITAL EFFECT
ON/OFF switch OFF
PROGRSM select switch 1
PARAMETER control Maximum
ST level control Maximum
MONITOR (1,2) level control Maximum
1-6 MASTER
ST GRAPHIC EQUALIZER control CENTER
GRAPHIC EQUALIZER ON switch OFF
ST1, MONO, MONITOR (1, 2), EFFECT fader Maximum
ST2, C-R/PHONES level control Maximum
ST1, MONO, MONITOR (1, 2), EFFECT AFL switch OFF