Yamaha n8 Service Manual page 118

n8/n12
*1: Connect 150 Ω resistor to the input terminals as follows:
INPUT CH A 1-4 (n8)/1-8 (n12):
Between 2 pin (Hot) and 3 pin (Cold)
INPUT CH 5-8 (LINE) (n8)/9-12 (LINE) (n12):
Between Tip and Sleeve
INPUT CH 5-8 (RCA) (n8)/9-12 (RCA) (n12):
Between Signal and GND
2TR IN: Between Signal and GND
*2: Connect 150 Ω resistor to both the LINE input terminals
and RCA input terminals at the same time.
Measure output level of ST OUT (LINE). Check that the noise
levels are as follows:
INPUT ST OUT R (LINE)
MONO CH A 1,3 (n8)/
1,3,5,7 (n12)
ST CH 5,7 (n8)/
9,11 (n12) (LINE)
ST CH 5,7 (n8)/
9,11 (n12) (RCA)
2TR IN L
INPUT ST OUT L (LINE)
MONO CH A 2 (n8)/
2,4,6 (n12)
· Use 22 Hz HPF and 30 kHz LPF.
2-2-8. Crosstalk (Output L/R)
Set up switches, volumes and faders as follows:
Adjust input level so that output levels are as in the following
descriptions:
PAD SW of CH 1 and 2:
PAN Volume of CH 1:
PAN Volume of CH 2:
BAL Volume of STEREO BUS:
L or R (Refer to the following descriptions for details.)
GAIN Volume of CH 1 and 2:
Fader of CH 1 and 2:
STEREO BUS Fader:
ON SW of CH 3-8 (n8)/CH 3-12 (n12):
Off (Refer to the following descriptions for
information on CH 1 and CH 2.)
STEREO ON SW:
AUX Volume of CH 3-8 (n8)/CH 3-12 (n12):
MIN (Refer to the following descriptions for
information on CH 1 and CH 2.)
AUX LEVEL Volume (n12 only):
AUX PHONES Volume:
C-R PHONES Volume:
C-R SOURCE SELECT SW:
118
Unit: [dBu]
-73
-73
-73
-73
-73
Off
L (Turned counterclockwise fully)
R (Turned clockwise fully)
MAX
MAX
MAX
On
MAX
MAX
MAX
AUX
ST OUT (LINE) ST OUT (RCA)
INPUT
L R
+18 -58 or +6.2
CH A 1 *1
(output) less (output)
-58 or +18 -68 or
CH A 2 *2
less (output)
C-R OUT (n8)
C-R PHONES
C-R OUT A-C (n12)
INPUT
L R
+18 -58 or +7.1
CH A 1 *1
(output) less (output)
-58 or +18 -58 or
CH A 2 *2
less (output)
· Use 22 Hz HPF and 30 kHz LPF.
*1: Turn on the ON switch of CH 1 and turn off the ON
switch of CH 2. Set the AUX Volume of CH 1 to MAX
and set the AUX Volume of CH 2 to MIN.
Turn the BAL Volume of the STEREO BUS to L (fully
counterclockwise).
Measure noise level at channel R of each output as
crosstalk level.
*2: Turn off the ON switch of CH 1 and turn on the ON
switch of CH 2. Set the AUX Volume of CH 1 to MIN
and set the AUX Volume of CH 2 to MAX.
Turn the BAL Volume of the STEREO BUS to R (fully
clockwise).
Measure noise level at channel L of each output as
crosstalk level.
2-2-9. PHONES Volume attenuation
Set up as in description marked !4 in procedure 2-2-2.
Set up the controller as follows:
C-R/AUX PHONES:
C-R PHONES
INPUT
INPUT
LEVEL
L
CH A 1 +4 -78 or less
CH A 2 +4 – -78 or less
2-2-10. Talkback MIC (n12 only)
Set the AUX LEVEL Volume to MAX.
Hold down the TALKBACK switch.
Direct buzzer sound toward microphone.
Adjust the TALKBACK LEVEL Volume and check that signal
is output from the AUX OUT.
Unit: [dBu]
AUX OUT
(n12 only)
L R L R
-68 or +18 -58 or
less (output) less
+6.2 -58 or +18
less (output) less (output)
AUX PHONES
L R L R
-58 or +7.1 -58 or
less (output) less
+7.1 -58 or +7.1
less (output) less (output)
MIN
Unit: [dBu]
AUX PHONES
R L R
– -78 or less –
– -78 or less