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7
DJM-900NXS
5
6
7
8
5
6
7
8
A
B
C
D
E
F
1.4 ON MODIFICATION OF THE VOLTAGE-MONITORING CIRCUITS
A side
A side
D 1 2 0 4
1 S S 3 0 1
Q 1 2 0 3
( 2 / 2 )
3
5
4
H
N
1 A 0 1 F U ( Y G R )
Q 1 2 0 3
( 1 / 2 )
6
2
1
R1215
39k
(F)
R 1 2 1 9
1 k
R1216
10k
R1217
3.3k
(D)
R1214
12k
(F)
R1218
12k
(D)
R 1 2 2 0
N
M
V
+ 9 H P
V
- 9 H P
V
- 9 H P
V
+ 5 A
V
+ 5 A
S T B Y
A side
A Side
B side
B Side
!
!
100u/25
C1213
100u/25
C1206
47u/16
C1220
47u/16
C1221
N
M
C1269
C 1 2 1 6
0 . 3 3 u / 5 0
C1271
1000p/50
CH
C1270
1000p/50
CH
C 1 2 1 8
0 . 1 u / 1 6
C1217
22u/16
CCG1254
C1219
1u/16
D 1 2 0 3
R B 5 0 1
V
- 4 0
D 1 2 0 2
R B 5 0 1
V
- 4 0
D 1 2 0 6
N
M
D 1 2 0 5
N
M
G
N
DA_HP
G
N
DA_HP
G
N
DA_HP
K I A 7 9 0 9 P I
I C 1 2 0 2
1
G
N
D
2
I
N
3
O U T
K I A 7 8 0 9 A P I
I C 1 2 0 1
1
I
N
2
G
N
D
3
O U T
C K F 1 0 8 9 - A
K
N
1 2 0 2
1
P 1 2 1 2
N
M
1
2
P 1 2 1 1
N
M
1
2
R 1 2 0 5
1 5
2 W
R 1 2 2 9
0
R 1 2 2 8
0
R 1 2 0 6
1 5
2 W
V
+ 1 5 A _ H P
V
+ 9 H P
V
- 9 H P
D r o p R e s i s t e r
HP Block
V
+ 9 H P
V
- 9 H P
V
+ 9 H P _ U
N
R E G
V
-9HP_U
N
REG
D r o p R e s i s t e r
S T B Y
S T B Y
S T B Y
S T B Y
S T B Y
A side
A side
D 1 2 0 4
1 S S 3 0 1
Q 1 2 0 3
( 2 / 2 )
3
5
4
H
N
1 A 0 1 F U ( Y G R )
Q 1 2 0 3
( 1 / 2 )
6
2
1
R1215
39k
(F)
R 1 2 1 9
1 k
R1216
10k
R1217
3.3k
(D)
R1214
12k
(F)
R1218
12k
(D)
R 1 2 2 0
N
M
V
+ 9 H P
V
- 9 H P
V
- 9 H P
V
+ 5 A
V
+ 5 A
S T B Y
A side
A Side
B side
B Side
!
!
47u/16
C1220
47u/16
C1221
N
M
C1269
C 1 2 1 6
0 . 3 3 u / 5 0
C1271
1000p/50
CH
C1270
1000p/50
CH
C 1 2 1 8
0 . 1 u / 1 6
C1217
22u/16
CCG1254
C1219
1u/16
D 1 2 0 3
R B 5 0 1
V
- 4 0
D 1 2 0 2
R B 5 0 1
V
- 4 0
D 1 2 0 6
N
M
D 1 2 0 5
N
M
G
N
DA_HP
G
N
DA_HP
K I A 7 9 0 9 P I
I C 1 2 0 2
1
G
N
D
2
I
N
3
O U T
K I A 7 8 0 9 A P I
I C 1 2 0 1
1
I
N
2
G
N
D
3
O U T
P 1 2 1 2
N
M
1
2
P 1 2 1 1
N
M
1
2
R 1 2 0 5
1 5
2 W
R 1 2 2 9
0
R 1 2 2 8
0
R 1 2 0 6
1 5
2 W
V
+ 9 H P
V
- 9 H P
D r o p R e s i s t e r
HP Block
V
+ 9 H P
V
- 9 H P
V
+ 9 H P _ U
N
R E G
V
-9HP_U
N
REG
D r o p R e s i s t e r
S T B Y
S T B Y
S T B Y
S T B Y
S T B Y
The voltage-monitoring circuits have been modified because of a malfunction found during mass-production of the products.
N
ote that the measures taken for the products may differ by the timing of the production.
• Malfunction: A shutdown may occur when certain headphones are used with this product.
• Cause: Malfunction of the voltage-monitoring circuits
• Modifications:
1
Removal of the ±9-
V
monitoring circuit
2
Removal (short-circuiting) of the power-drop resistors (R1205, R1206)
1
±9-V monitoring circuit
2
Power-drop resistors (R1205, R1206)
Timing of the production:
(1) All units with serial numbers beginning with
KA
or
KB
, and some units with serial
numbers beginning with
KC
or
KD
(2) Some units with serial numbers beginning with
KC
,
KD
, or
KF
(planned), and all units
with serial numbers beginning with
KE
(3) Some units with serial numbers beginning with
KF
, and all units with serial numbers
beginning with on and after
KG
(planned)
(1) All units with serial numbers beginning with
KA
or
KB
, and some units with serial numbers beginning with
KC
or
KD
1
Removal of the chip diode [D1204].
2
Soldering of a lead wire or a piece of wire to R1205
and
R1206.
Remove D1204.
D1204
R1206
R1206
R1205
R1205
Remove D1204.
MAI
N
ASSY
2. Securing the lead wires (pieces of wire) to
the resistors with adhesive
Silicone adhesive used: GYA1011
1. Soldering of a lead wire (or a piece
of wire) to the resistor
Содержание DJM-900NXS
Страница 10: ...10 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 2 2 PANEL FACILITIES ...
Страница 11: ...11 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 12: ...12 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 ...
Страница 15: ...15 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 20: ...20 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 4 3 DSP BLOCK DIAGRAM ...
Страница 21: ...21 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 87: ...87 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 189: ...189 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 192: ...192 DJM 900NXS 1 2 3 4 A B C D E F 1 2 3 4 A SIDE B A INPUT ASSY CN4003 CN4002 CN5001 CN5401 ...
Страница 193: ...193 DJM 900NXS 5 6 7 8 5 6 7 8 A B C D E F A SIDE B LF DWX3193 INPUT DWX DNP2625 B CN6201 CN4201 CN4601 1 ...