Service manual

38
EMX68S / EMX88S
MONITOR
GRAPHIC EQUALIZER (7 band) fader: CENTER
EFFECT RTN level control: MAX
2TR IN: MAX
MASTER level control: MAX
PHANTOM switch: OFF
POWER AMP switch: MAIN (L-R)
YAMAHA SPEAKER PROCESSING switch: OFF
STAND-BY switch: OFF
2.2 Gain Check
On condition of 2.1, confirm that the output level of each terminal meets the table 2.2-1~2.2-4.
Table 2.2-1 INPUT TERMINALS [CH1-2: EMX68S / 1-4: EMX88S ] [unit: dBs]
INPUT INPUT LEVEL MAIN OUT(L,R) MONITOR OUT EFFECT OUT REC OUT
-62 +1±2+4±2+4±2 -16.8±2
Low-Z -32 +1±2- - -
(PAD ON)
-52 +1±2- - -
Hi-Z -22 +1±2- - -
(PAD ON)
Table 2.2-2 INPUT TERMINALS [CH3-4: EMX68S / 5-6: EMX88S] [unit: dBs]
INPUT INPUT LEVEL MAIN OUT(L,R) MONITOR OUT EFFECT OUT REC OUT
-62 +1±2+4±2+4±2 -16.8±2
Low-Z -32 +1±2- - -
(PAD ON)
-42 +1±2- - -
Super Hi-Z -12 +1±2- - -
(PAD ON)
Table 2.2-3 INPUT TERMINALS [CH5-6: EMX68S / 7-8: EMX88S] [unit: dBs]
INPUT INPUT LEVEL MAIN OUT(L,R) MONITOR OUT EFFECT OUT
MIC -62 +1±2+7±2+7±2
LINE L -22 +1±2+7±2+7±2
LINE R -22 +1±2+1±2+1±2
Table 2.2-4 INPUT LEVEL [AUX IN, 2TR IN] [unit: dBs]
INPUT INPUT LEVEL MAIN OUT(L,R) MONITOR OUT
AUX IN -22 +4±2-
2TR IN -22 +1.8±2 +1.8±2
2.3 Frequency Characteristic Check
At each terminal of the Table 2.2-1~2.2-4, confirm that the output level for 20Hz, 20kHz signal are within +1, -3dB from the level
for 1kHz signal.