j
NJM2151A
s TEST CIRCUIT
EVR
HP.V+
LINE-IN-L
MUTE 1kΩ
27kΩ
0.47uF
1
HP.V+ 20
47uF
2
+
VR
19
47uF 100Ω
HP.OUT L
HP.OUT R
3
LINE-IN-R
27kΩ
44
1kΩ
0.47uF
+ VR
18
100Ω
17
HP GND
SP.V+
SYS.BEEP IN
SP IN
1kΩ
BEEP IN
1kΩ
HP.SUSPEND
5
22uF
33kΩ
6
0.47uF
15kΩ
7
0.47uF
18kΩ
8
1kΩ 0.47uF
9
SP.V+ 16
390kΩ
15
+
14
8Ω
13
HP.SUSPEND
12
SP.OUT 1
SP.OUT 2
LM
SP.SUSPEND
10
SP.SUSPEND
11
SP.GND
s CONTROL TERMINAL EXPLANATION
1:MUTE CTRL (3pin)
PARAMETER
STATUS
HP. Mute On
H
HP. Mute Off
L
2:HP.SUSPEND CTRL (9pin)
PARAMETER
STATUS
HP. Suspend Off
H
HP. Suspend On
L
3:SP.SUSPEND CTRL (10pin)
PARAMETER
STATUS
SP. Suspend Off
H
SP. Suspend On
L
4:LINE MIX ON/OFF CTRL (12pin)
PARAMETER
STATUS
Line Mix Off
H
Line Mix On
L
NOTE
HP.AMP. is not given off signal.
HP.AMP. is given off signal.
NOTE
HP.AMP. is active.
HP.AMP. is non-active.
NOTE
SP.AMP. is active.
SP.AMP. is non-active.
NOTE
Signal don’t get in SP.AMP.
Signal get in SP.AMP.