WEB ACCESS: http://www.yorkville.com
Manual-Service-NX250P-1v00.pdf
WORLD HEADQUARTERS
CANADA
SERVICE MANUAL
TYPE: YS1030
NX250P
U.S.A.
Yorkville Sound
550 Granite Court
Pickering, Ontario
L1W-3Y8 CANADA
Voice: (905) 837-8481
Fax: (905) 837-8746
Quality and Innovation Since 1963
Yorkville Sound Inc.
4625 Witmer Industrial Estate
Niagara Falls, New York
14305 USA
Voice: (716) 297-2920
Fax: (716) 297-3689
Printed in Canada
IMPORTANT SAFETY INSTRUCTIONS
INSTRUCTIONS PERTAINING TO A
RISK OF FIRE, ELECTRIC SHOCK,
OR INJURY TO PERSONS
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO
NOT REMOVE COVER (OR BACK).
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
Read Instructions
The Owner’s Manualshould be read and understood
before operation of your unit. Please, save these instructions for future reference.
Packaging
Keep the box and packaging materials, in case the unit
needs to be returned for service.
Warning
When using electric products, basic precautions should
always be followed, including the following:
Power Sources
Your unit should be connected to a power source only of the voltage
specified in the owners manual or as marked on the unit. This unit has a
polarized plug. Do not use with an extension cord or receptacle unless
the plug can be fully inserted. Precautions should be taken so that the
grounding scheme on the unit is not defeated.
Hazards
Do not place this product on an unstable cart, stand, tripod, bracket or
table. The product may fall, causing serious personal injury and serious
damage to the product. Use only with cart, stand, tripod, bracket, or
table recommended by the manufacturer or sold with the product.
Follow the manufacturer’s instructions when installing the product and
use mounting accessories recommended by the manufacturer.
The apparatus should not be exposed to dripping or splashing water;
no objects filled with liquids should be placed on the apparatus.
Terminals marked with the “lightning bolt” are hazardous live; the
external wiring connected to these terminals require installation by an
instructed person or the use of ready made leads or cords.
Ensure that proper ventilation is provided around the appliance.
No naked flame sources, such as lighted candles, should be
placed on the apparatus.
Power Cord
The AC supply cord should be routed so that it is unlikely that it will be
damaged. If the AC supply cord is damaged DO NOT OPERATE THE UNIT.
Service
The unit should be serviced only by qualified service personnel.
INSTRUCTIONS RELATIVES AU RISQUE
DE FEU, CHOC ÉLECTRIQUE, OU
BLESSURES AUX PERSONNES
AVIS:
AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE,
N’ENLEVEZ PAS LE COUVERT (OU LE PANNEAU ARRIERE)
NE CONTIENT AUCUNE PIECE
REPARABLE PAR L’UTILISATEUR.
CONSULTEZ UN TECHNICIEN QUALIFIE
POUR L’ENTRETIENT
Veuillez Lire le Manuel
Il contient des informations qui devraient êtres comprises
avant l’opération de votre appareil. Conservez S.V.P. ces
instructions pour consultations ultérieures.
Emballage
Conservez la boite au cas ou l’appareil devait être
retourner pour réparation.
Attention:
Lors de l’utilisation de produits électrique, assurezvous d’adhérer à des précautions de bases incluant
celle qui suivent:
Alimentation
L’appareil ne doit être branché qu’à une source d’alimentation
correspondant au voltage spécifié dans le manuel ou tel qu’indiqué sur
l’appareil. Cet appareil est équipé d’une prise d’alimentation polarisée.
Ne pas utiliser cet appareil avec un cordon de raccordement à moins
qu’il soit possible d’insérer complètement les trois lames. Des
précautions doivent êtres prises afin d’eviter que le système de mise à
la terre de l’appareil ne soit désengagé.
Risque
Ne pas placer cet appareil sur un chariot, un support, un trépied ou une
table instables. L’appareil pourrait tomber et blesser quelqu’un ou subir
des dommages importants. Utiliser seulement un chariot, un support,
un trépied ou une table recommandés par le fabricant ou vendus avec
le produit. Suivre les instructions du fabricant pour installer l’appareil et
utiliser les accessoires recommandés par le fabricant.
Il convient de ne pas placer sur l’appareil de sources de flammes
nues, telles que des bougies allumées.
L’appeil ne doit pas être exposé à des égouttements d’eau ou des
éclaboussures et qu’aucun objet rempli de liquide tel que des vases
ne doit être placé sur l’appareil.
Assurez que lappareil est fourni de la propre ventilation.
Les dispositifs marqués d’une symbole “d’éclair” sont des parties
dangereuses au toucher et que les câblages extérieurs connectés à
ces dispositifs de connection extérieure doivent être effectivés par un
opérateur formé ou en utilisant des cordons déjà préparés.
Cordon d’Alimentation
Évitez d’endommager le cordon d’alimentation. N’UTILISEZ PAS
L’APPAREIL si le cordon d’alimentation est endommagé.
Service
Consultez un technicien qualifié pour l’entretien de votre appareil.
safety-4v3.eps • Oct. 26/05
321
4
D
R10
R11
10K
3
R5
1.2K
R2
330
R1
330
R4
330
R3
330
1.2K
D2
15V
D4
15V
D6
15V
D8
15V
S4
CN1
1
2
3
4
C2
22P
D1
15V
D3
15V
C3
22P
D5
15V
D7
15V
2
1
5
6
7
8
9
CN2
1
2
3
4
C4
0.1U/400V
-15V G
C5
1U/50V
R13
10K
TR1
BC550C
TR2
BC559C
R12
10K
R7
1K
DL2
POWER
R
DL1
SINGL/COMP
R9
2.7K
R8
K
2.7K
-15V
S3
OUT
4
S1
MIC IN
C
4
S2
LINE IN
B
C1
0.01U/400V
2
3
1
2
3
1
5
6
4
2
3
1
R6
10R/0.5W
SW1
1 2
D
C
B
A
1 2 34
Title
P-200FAPRE
Number RevisionSize
A4
Date: 24-Dec-2003 Sheet of
File: D:\LYM\YORKVILLE\20031219-200FA.ddbDrawn By:
A
321
R25
330
R26
13
IC2D
12
R28
1K
9
10
C17
10U/50V NP
15K
TL074CN
IC2C
C11
22P
C6
22P
C20
TL074CN
TL072CN
D
CN2
1
C
2
3
4
5
6
7
8
9
B
R29
15K
R23
C21
22P
R27
2.2K
15K
R24
15K
14
22P
R22
15K
1
VR5
C10K
MIC GAIN
R13
4.7K
C10
0.33U/63V
R21
4.7K
8
C16
22P
R18
10K
2
IC1A
3
R16
4.7K
R17
4.7K
6
5
R19
1.5K
C19
22P
R20
4.7K
IC2B
TL074CN
7
C1
10U/50V NP
VOL
VR1
B5K
R14
22K
TR1
BC559C
6
5
R4
4.7K
R1
330
DL1 VTL5C4
22P
C2
R15
22K
IC1B
TL072CN
12
34
C3
7
10U/50V NP
R3
1.5K
R10
4.7K
R7
2.7K
R5
10K
VR4
B10K
HIGH
C7
0.0056U/63V
VR3
B10K
R8
10K
MID
C5
0.0068U/100V
LOW
VR2
B10K
R11
4.7K
C9
0.018U/63V
R9
2.7K
R12
12K
R6
10K
2
3
R30
10K
C8
22P
IC2A
TL074CN
4
D
CN1
1
C
2
R2
330
1
+15V
-15V
3
4
5
6
7
8
9
10
11
12
B
C4
+15V
C13
10U/50V
A
C12
10U/50V
C14
0.1U/50V
C15
0.1U/50V
1 2 34
C18
0.1U/50V
C22
0.1U/50V
IC2E
411
TL074CN
84
IC1C
TL072CN
-15V
0.047U/63V
Title
P-200FATONE
Number RevisionSize
A4
Date: 24-Dec-2003 Sheet of
File: D:\LYM\YORKVILLE\20031219-200FA.ddbDrawn By:
A
1
5
V
1+
1
K0
62
R
92C
R
92
1
K0
2R
8
D
C
2
NC
1
2
3
4
5
6
7
8
B
A
K01
1-
411
E2CI
N
C470LT
7
1R
T
CB
72
R
033 3
9
R
6
K7.4
5
C
9
8C
V
51+
V5
4C
V36/U74.0
V36/U74.0
V51+
C
5
U1.0
V05/
411
E4CI
V05/U1.0
1-
V5
1
V05/U1.0
6
5
B5CI
NC270LT
C955
83R
K0
1
4
D
8414N1
B2CI
7
NC470LT
R
01
K81
72C
0
V05/U1.
NC470LT
22C
T
V05/U1.0
03C
P01
93R
K003
T
2RT
CB
C955
A5CI
1
5
R
K7.
4
3C
V36/U
74.0
C
84
C1CI
NC270L
2C
0
5/U1.0
V
3R
C955CB
2
NC270LT
9
0
1
7C
V36/U74.0
01
V
05/U1.0
C2CI
T
7R
K81
0
0.0
4
02R
K
01
52R
K01
12R
K8
1
R
63
UN
4N74N7
(jumper)(jumper)
03R
K01
1
5k15k1
4
3
R
8
K7
2
xxxxxx
NC470L
xxxxxx
360R360R
04R
K0
1
12C
%3 V001/U7
C
0
5/U0
43R
07
2
23R
1
08
2
5
V
51-
xxxxxxxxxxxxx
82C
02
PN
V
47N47N
43C
xxxxxxxxxxxxx
xxxxxxxxxxxxx
47N47N
33C
0
7400.
22R
K51
31R
K6.
2
31C
%3 V001/U510.0
3
T
C470L
21R
xxxxxx
K
8
1
TROHS
%3 V001/U1.0
23C
%3 V001/U740.0
13C
52C
%3 V001/U2200.0
22K22K
54R
K0
1
4k74k7
14R
xxxxxx
K
01
2
3
%3 V001/U1.0
73R
K
01
31
21
%3 V001/U
9
01
13R
Production Notes
K51
CI
T
T
C
A2CI
1
1/U
00.0
6
8
N
R
4
2
K
1
0
A4CI
1
0LT
NC47
53R
U
N
4
4
R
K
6
8
D4
4
1
NC470L
4CI
C
8
C470L
N
• 4 ohm speaker used
11R
K7.
2
2
1
%3 V00
1C
U
0
6
3 V001
8
0.0
/
42R
K
1
8
6
5
3R
3
K01
2R
3
5
1
K
Yorkville Revisions
Date
Jan 20/04 1.0
Feb 20/04 1.1
Feb 23/04 1.2
32
1
1
1
%
P
2
2
0LT
I
3
2
5
62C
B4CI
2C
D
R
6
1
4
22
K
NC470LT
8R
K6.
1
1C
1
7
NC47
D
V05/U0
8414N1
51-
40.
0
7
91R
1
0
T
elti
REV
i
z
e
S
A
4
i
F
3
2R
K22
V
P
:etaD
6
5
51+
V
R1
2.7K
41R
1
K0
81
R
K051
71C
V001/U
%3
1R
5
4
K7.
41C
0
10.
P
S
-
B
1
CI
7
2
D
8414
N1
NC2
T
L
70
C
6
2
2
P
4R
0
1
K
3R
2
K01
3
2
3
6
1R
6
5
K7.
2
%3 V001/U5
RF0
02
3
-ceD-42
002
0
C
A1CI
270
C
L
N
T
1C
9
P
2
2
71R
K7
4
A3CI
N
T
L
C270
3CI
B
51C
1/U10.
4
D
C
N
1
1
2
5
V
1-
1+
V5
3
D
8414N1
1
D
5
4
8
1
14N
1
7
NC270LT
%3 V00
84
0
C3CI
NC270LT
61C
V05/U1.0
fo teehS
bdd.AF002-91213002\ELLIVKROY\MYL\:D:el
:yB nwa
rD
4
V5
1+
81C
84
V05/U1.
C5CI
V51-
noisiveRrebmuN
3
4
5
6
7
8
9
1
0
1
1
1
2
C
B
32C
V05/U1.0
N
C270LT
42
C
V05/
U1.0
A
321
4
H
+VCC1
R11
22K
D1
1N4148
D22
1N4002
D20
1N4002
C43
0.0047U/400V
C44
0.0047U/400V
D21
1N4002
D25
1N4002
C4
82P
R4
1K
C9
10U/50V
2
3
10
11
R61
47/0.25W
R60
8.2K/0.25W
C38
220P
R46
12K
R42
12K
C36
220P
R62
8.2K//0.25W
R63
47/0.25W
12
MUTE
ST-BY
TDA7294
1
78
13
100U/50V
IC1
15
C21
100U/50V
R64
47K/0.25W
TR10
MJE340
R45
4.7/0.5W
R50
4.7/0.5W
TR3
MJE350
C27
6
14
5
4
9
D14
1N4002
D16
1N4002
C49
470P
R69
47K/0.25W
C19
1U/25V
C18
10U/50V
C20
1U/25V
-VCC1
R65
2.2K/0.25W
TR9
MJE15030
R44
470
D17
1N4002
D15
1N4002
R51
470
TR11
MJE15031
R71
2.2K/0.25W
C50
470P
22U/50V
C8
R13
22K
R19
10/0.5W
HI OUT
R66
1K
C51
0.0047U/100V
TR14
MJE340
TR15
MJE350
C54
0.0047U/100V
R70
R73
1K
390
C17
0.1U/100V
R72
390
MJE15031
TR16
R52
R55
10/0.25W
TR13
2SA1943-O
TR17
MJE15030
10/0.25W
0.2/5W
0.2/5W
+VCC2
C55
0.1U/250V
TR18
TIP36C
D28
1N4002
D23
6A2
+VCC1
TR12
2SC5200
R53
R54
D15
1N4002
D19
1N4002
D24
6A2
D29
1N4002
RL1A
24V/16A
LOW OUT
OUT
-VCC1
D10
6A2
D13
6A2
TR19
TIP35C
C56
0.1U/250V
-VCC2
C7
22U/50V
R8
680
R67
8.2K/2W
R68
8.2K/2W
R16
22K
C33
10/50V
R15
33K
220U/25V
220U/25V
C45
C48
R12
1K
R14
10K
R57
12K/0.25W
8.2K/0.25W
R56
8.2K/0.25W
R58
R59
12K/0.25W
R9
C37
100P
10K
R37
820
C13
1U/50V NP
D11
1N4002
R27
68/0.25W
TR6
MJE350
D26
7.5V/1W
C39
0.001U
1.5K
R43
TR5
MJE802P
VR1
500
R23
470
D27
C35
100P
R41
820
C40
7.5V/1W
TR2
MJE340
R40
68/0.25W
D9
1N4002
C2
22P
R1
D2
1N4148
R2
D3
1N4148
10K
G
6
TL071CN
10K
R3
2
IC2A
33K
3
R7
33K
R10
15K
C41
47U/100V
TR4
F
CN1
1
2
3
4
5
6
7
8
9
10
11
12
E
D
t
PTC/330
-15V
+15V
R17
10U/50V NP
10U/50V NP
R22
1K
R30
1K
C14
R31
1K
C15
R26
2.7K
D6
1N4148
D5
1N4148
R33
1K
R32
10K
7
TL072CN
C24
0.0047U/100V
2
IC5A
3
C31
C26
22P
IC5B
TL072CN
R29
100K
6
5
R18
47K
33P
R25
R24
4.7K
12K
-15V
1
R34
10K
+15V
R36
R35
4.7K
12K
2N5551
R28
68K
R39
68K
D4
1N4148
D7
1N4148
R38
820
C32 0.1U/50V
TR1
2N5401
47U/100V
H
G
F
E
D
+15V
C
R84
LOW OUT
47K
R75
47K
R74
4.7K
D30
KBU-806
+VCC2
-VCC2
C52
4700U/80V
C53
4700U/80V
C46
4700/50V
C47
4700U/50V
C6
0.1U/50V
C28
0.1U/50V
+VCC1
-VCC2
C5
10U/50V
C29
10U/50V
3
2
IC3
LM317T
Vin
R6
2.7K
R20
2.7K
Vin
IC4
LM337SP
C25
TL071CN
C34
IC2C
+15V
C3
0.1U/50V
74
C1
0.1U/50V
-15V
C58
1000U/6.3V
2
Vout
GND
1
1
GND
Vout
C10
10U/50V
C30
10U/50V
R5
220
C11
C12
10U/50V
0.1U/50V
C22
C23
0.1U/50V
10U/50V
R21
220
3
84
IC5C
TL072CN
0.1U/50V
0.1U/50V
D33
1N4002
CN2
B
A
C57
0.01U/400V
1
2
3
4
5
C60
0.01U/400V
D32
1N4002
D31
BP25-06PWS
1 2 3 4
R82
150K
C61
1U/50V
TR24
BC550
TR20
BC550
R81
10K
TR23
BC560
R83
10K
TR25
BC550
R78
10K
R80
C59
10K
220U/25V
R77
330
R76
33K
-15V
RL1C
24V/16A
TR22
BC560
-15V
Title
P-SP200AMP
Number Revisi onSize
D
Date: 24-Dec-2003 Sheet of
File: D:\LYM\YORKVILLE\20031219-200FA.ddbDrawn By:
C42
0.1U/50V
R49
10K
R79
10K
TR21
BC560
TR8
BC327-25
D8
1N4148
R48
10K
TR7
D12
1N4002
BC560
R47
150/0.25W
C
B
A
220R
PRODUCTION NOTES
1. Tack on #4977 220R and
#5422 1N 50V bead cap to
1N
J1, J3 jumpers of IC1 TDA7294
220R 1N
J1
pin 2
of
TDA7294
J3
pin 3
of
TDA7294
2. Heatshrink the 220R and 1N
together and RTV into place
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