<Drawn By>
<Checked By>
<QC By>
<Released By>
<Drawn Date>
<Checked Date>
<QC Date>
<Release Date>
<Code>
A1
<Scale>
2
2
REV:
SIZE:
CODE:
DRAWN:
DATED:
DATED:
CHECKED:
QUALITY CONTROL:
DATED:
DATED:
RELEASED:
COMPANY:
TITLE:
DRAWING NO:
SHEET: OF
SCALE:
REVISION RECORD
A
B
C
D
DATE:
1
2
3
4
5
6
D
C
B
A
LTR
ECO NO:
APPROVED:
& TIME DELAY CIRCUITRY
COMMON THERMAL MANAGEMENT
0201000985-619060
011
VMA 2-CH AMP (CH2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J2A
TO AMP CH1
C236
100uF
C237
0.1uF
25V
C238
100uF
C240
0.1uF
25V
C224
10u
50V
R2017
511 1%
CR206
1N4148
R2016
1.15K 1%
C232
0.1
R2023
10K
CR209
1N4148
CR210
1N4148
R2021
100
Q234
MMBT4403
CR208
1N4148
C229
10u
50V
R2022
22K
R2020
150K
R2019
10K
C228
100P
3
+
2
-
1
U201-A
AS358M
R2018
100K
5
+
6
-
7
U201-B
AS358M
R2015
220K
R2013
220K
C203
0.1
8
4
U201-C
AS358M
R2014
10K 1%
CR211
1N4148
R2012
10K 1%
CR205
1N4148
R2051
NTSA0XR502FE1B0
R2024
1M
R2026
3.3K
R2025
10K
Q235
MMBT4401
R2027
68R
1/4W
CR212
GS1G
R2028
0R
R2029
N.I
R4
10K 1%
CR1
1N4148
CR111
1N4148
1
2
RL3-A
RLY-2P1T
3
+
2
-
1
U2-A
AS358M
8
4
U2-C
AS358M
5
+
6
-
7
U2-B
AS358M
1
2
3
U3
LM317
R14 22K
CR5
1N4148
CR6
1N4148
R15 47K
C2103
220u
35V
1
2
J2
24V FAN
CR511
N.I.
C4
0.1
R16
220R
R17
100K
R18
220K
CR7
N.I.
P10
P11
3
2
P8
3
2
P13
R2031
15K
CR233
1N4148
K
A
LED1
REMOTE_2
[1]
CH2_HIZ
[1]
CH2_CLIP
[1]
SIG_LED_2
[1]
CH2_AMP
[1]
+3.3VA
+15V
-15V
MAIN_POWER
[1,2]
DELAY
[1,2]
THERMAL_1 [2]
AMP1_PROTECTION [2]
CH1_HIZ [1]
+15V
-15V
IGND_2
+15V
DELAY
[1,2]
+15V
+15V
THERMAL_2
[1]
IGND_2
IGND_2
+15V
+15V
[1,2]
AMP2_PROTECTION
[1]
DELAY
[1,2]
+15V
MAIN_POWER
[1,2]
THERMAL_1
[2]
AMP1_PROTECTION
[2
]
AGND
AGND
GND_FAN
+30V
[2]
IGND_2
+30V
[2]
IGND_2
IGND_2
+30V
AGND
CHGND
GND_FAN
VMA 160/1120/1240/260/2120 Service Manual
Version A - 09/20
60
Table of Contents
