Yamaha BBT500H Service Manual page 34

BBT500H
4 - 2. INPUT LEVEL VR Check
Input point
INPUT
(JK301)
4 - 3. Each output level check 1
Input point Measure point Load
INPUT
(JK301)
4 - 4. PHONES LEVEL VR101 check
Use 20kHz LPF of level meter.
Input point Measure point Load
RETURN
(JK103)
4 - 5. Each output level check2
Input point Measure point Load
RETURN (JK107)
(JK103)
34
Measure point Load Input level Input frequency
TUNER OUT
10kΩ -20dBm
(JK102)
Input level
TUNER OUT
10kΩ -20dBm
(JK102)
SEND
10kΩ -20dBm
(JK104)
Input level
LINE OUT
10kΩ -20dBm
(JK106)
Input level
-20dBm
LINE OUT
(JK106) 10kΩ
0dBm
LINE OUT
Canon 2Pin 600Ω -20dBm
LINE OUT
Canon 3Pin
600Ω -20dBm
(JK107)
HEAD PHONE
L ch.
33Ω -30dBm
(JK105)
HEAD PHONE
R ch.
33Ω -30dBm
(JK105)
INPUT LEVEL
(VR301)
Min.
1kHz
Max.
FX LOOP LEVEL
Input frequency Measured value
(SW105)
100Hz
L
1kHz
(-20dBm ch.)
10kHz
100Hz
L
1kHz
(-20dBm ch.)
10kHz
100Hz
R
1kHz
(+4dBm ch.)
10kHz
FX LOOP LEVEL
Input frequency
(SW105)
L
1kHz
(-20dBm ch.)
FX LOOP LEVEL
Input frequency
(SW105)
100Hz
L
1kHz
(-20dBm ch.)
10kHz
100Hz
R
1kHz
(+4dBm ch.)
10kHz
100Hz
L
1kHz
(-20dBm ch.)
10kHz
100Hz
L
1kHz
(-20dBm ch.)
10kHz
100Hz
L
1kHz
(-20dBm ch.)
10kHz
100Hz
L
1kHz
(-20dBm ch.)
10kHz
Measured value
-22±5dBm
+12±5dBm
+12±3dBm
as above
as above
-19±3dBm
as above
as above
+2±3dBm
as above
as above
PHONE
Measured value
(VR101)
Min. under -50dBm
Max. +1±3dBm
Measured value
+1±3dBm
as above
as above
0±3dBm
as above
as above
+1±3dBm
as above
as above
+1±3dBm
as above
as above
+2±3dBm
+3±3dBm
as above
+2±3dBm
+3±3dBm
as above