SERVICE MANUAL
TYPE: YS1003
YCV50
WEB ACCESS: http://www.yorkville.com
WORLD HEADQUARTERS
CANADA
U.S.A.
Yorkville Sound
Yorkville Sound Inc.
550 Granite Court
Pickering, Ontario
L1W-3Y8 CANADA
4625 Witmer Industrial Estate
Niagara Falls, New York
14305 USA
Voice: (905) 837-8481
Fax: (905) 837-8746
Voice: (716) 297-2920
Fax: (716) 297-3689
Quality and Innovation Since 1963
Printed in Canada
Manual-Service-ycv50-00-1v9.pdf
IMPORTANT SAFETY INSTRUCTIONS
INSTRUCTIONS RELATIVES AU RISQUE
DE FEU, CHOC ÉLECTRIQUE, OU
BLESSURES AUX PERSONNES
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).
AVIS:
AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE,
N’ENLEVEZ PAS LE COUVERT (OU LE PANNEAU ARRIERE)
NO USER SERVICEABLE PARTS INSIDE.
NE CONTIENT AUCUNE PIECE
REPARABLE PAR L’UTILISATEUR.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
CONSULTEZ UN TECHNICIEN QUALIFIE
POUR L’ENTRETIENT
Read Instructions
Veuillez Lire le Manuel
Packaging
Emballage
Warning
Attention:
The Owner’s Manualshould be read and understood
before operation of your unit. Please, save these instructions for future reference.
Keep the box and packaging materials, in case the unit
needs to be returned for service.
Conservez la boite au cas ou l’appareil devait être
retourner pour réparation.
When using electric products, basic precautions should
always be followed, including the following:
Lors de l’utilisation de produits électrique, assurez-vous
d’adhérer à des précautions de bases incluant celle qui
suivent:
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.
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.
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.
No naked flame sources, such as lighted candles, should be
placed on the apparatus.
Power Cord
Il contient des informations qui devraient êtres comprises
avant l’opération de votre appareil. Conservez S.V.P. ces
instructions pour consultations ultérieures.
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-4v2.eps Aug 26/05
YCV50BLUE Parts List 2/15/2005
YS #
6397
5906
6398
6399
5907
5908
6825
6438
6461
6432
6475
6731
5101
5103
5104
6873
6730
6884
6880
6467
5203
5197
5194
5201
5206
5422
5273
5606
5208
5274
5209
6451
5204
5840
6435
5224
5841
5227
5228
5314
5865
5231
5882
5233
5234
5254
5257
5945
5959
5631
5902
5267
5879
5914
5621
TFS-2B
4423
4424
4425
713
3976
8522
8563
3478
3489
3494
3602
3682
NYS224
3498
3523
3528
3921
3890
3914
3451
2403
8451
8604
8889
Description
JEWELED PILOT LAMP AMBER REG V1
RED 3MM LED 1V9 20MA .4SPCER T&R
RED 5MM LED 1V5 20MA HIGH EFF
YEL 5MM LED 1V5 20MA HIGH EFF
YEL 3MM LED 1V9 20MA .4SPCER T&R
GRN 3MM LED 1V9 20MA .4SPCER T&R
1N4148 75V 0A45 DIODE
T&R
1N4007 400V 1A0 DIODE
T&R
1N5240BRL 10V0 0W5 ZENER 5% T&R
1N5248B 18V0 0W5 ZENER 5% T&R
1N5262B 51V0 0W5 ZENER 5% T&R
7824
TO220 P 24V0 REG
BC550C
TO92 NPN TRAN T&R TB
MPSA06 TO92 NPN TRANSISTOR T&R TA
MPSA56
TO92 PNP TRAN T&R TA
MJE340 TO126 NPN TRANSISTOR
TG
IRF830
TO220 NCH MFET
TN
NE5532N IC DUAL OP AMP
4N35
OPTO-COUPLER
10K 10%
THERMISTOR NTC TO-92
_47P 100V 2%CAP T&R RAD CER.2"NPO
220P 100V 2%CAP T&R RAD CER.2"NPO
470P 1000V 10%CAP T&R RAD CER.2"Y5P
470P 100V 5%CAP T&R RAD CER.2"NPO
__1N 400V 5%CAP T&R RAD .2"FLM
__1N 50V 10%CAP T&R BEAD
NPO
__1N5 200V 5%CAP T&R RAD CER.2"NPO
1N5 50V 5%CAP T&R RAD CER.2" X7R
__2N2 400V 5%CAP T&R RAD .2"FLM
__2N2 200V 5%CAP T&R RAD CER.2"NPO
__4N7 250V 5%CAP T&R RAD .2"FLM
__4N7 250V 20%CAP BLK 'Y' 10MM AC
_10N 100V 10%CAP T&R RAD .2"FLM
_22N 400V 10%CAP BLK RAD POLY FLM
_22N 275V 20%CAP BLK 'X2' 15MM AC
_47N 100V 10%CAP T&R RAD .2"FLM
_47N 250V 10%CAP RAD POLYFILM BULK
_82N 100V 5%CAP T&R RAD .2"FLM
100N 100V 5%CAP T&R RAD .2"FLM
100N 50V 10%CAP T&R BEAD
X7R
100N 250V 10%CAP BLK RAD POLY FLM
220N 63V 10%CAP T&R RAD .2"FLM
220N 250V 10%CAP BLK RAD POLY FLM
330N 63V 5%CAP T&R RAD .2"FLM
470N 63V 10%CAP T&R RAD .2"FLM
__1U 63V 20%CAP T&R 4X7MM .2"EL
__2U2 63V 20%CAP T&R RAD .2"EL
_10U 63V 20%CAP T&R RAD .2"EL
_10U 450V 20%CAP BLK
EL
_22U 50V 20%CAP T&R 6X7MM .2"EL
82U 450V 20%CAP BLK 22X30MM
100U 25V 20%CAP T&R RAD .2"EL
100U 16V 20%CAP T&R 8X7MM .2"EL
100U 63V 20%CAP BLK 10X13MM EL
470U 63V 20%CAP BLK 12X25MM EL
TRAYNOR DUAL FOOTSWCH 10' CORD-BULK
_20K 15AAUDIO 9MM
P32
100K 1B LIN 9MM
P32
500K 15AAUDIO 9MM
P32
25 X 20 X 50 2 MIL PLASTIC BAG
SNAP ON 0.843" INSULATING BUSHING
RUBBER BUMPER WITH WASHER -SMALLCORNER, 2 LEGS NOTCED BLK PLASTIC
CLIP 205/187X032 18-22AWG DISCO/INS
CLIP 250X032 18-22AWG DISCO/INSL
CLIP 205/187X020 14-16AWG DISCO/INS
RING TERMINAL 18AWG WIRE & #8 SCREW
250 MALE PCB TAB REEL
280 PLUG NEUTRIK NYS224
1/4" JCK PCB MT HORZ
1/4" JCK PCB MT HORZ GOLD T__
1/4" JCK PCB MT HORZ GOLD TR_
1/4" JCK PCB MT VERT STER RT SWT
36"90'RCA DUAL RED-WHITE PREFAB CBL
RCA SNGL PCB MT HORZ
EYELET SMALL 0.089 OD PLATED
T2A
5X20MM FUSE
10" STRAP HANDLE,BLACK METAL ENDCAP
10-32 T NUT
RUBBER GROMMET #2183-034-BLK
Qty. YS #
1
1
1
1
1
1
6
10
1
1
6
1
4
3
2
1
1
2
1
1
1
2
1
3
3
2
1
1
2
1
3
1
1
3
1
4
1
1
5
1
2
2
2
1
2
1
1
1
4
13
1
1
2
1
1
1
4
2
5
1
2
4
8
5
2
2
1
16
1
3
1
1
1
1
2
13
1
1
6
4
3438
3552
3810
8430
8638
3428
8264
8910
8900
YCV40POP
3674
8701
8800
8890
3830
3850
4599
5299
4748
2008
4817
2019
4852
2022
4821
4891
4822
4726
4823
4913
4824
4631
4808
4847
4827
4828
4663
4829
4983
4831
4833
4840
4868
4834
4927
4586
4838
4942
6120
4776
4851
4668
4841
6126
6145
4842
4843
4844
4845
3610
3700
3537
8865
8741
8832
8807
8801
8829
8755
8785
8722
8809
8756
8727
8843
8786
8862
8770
8905
3741
Description
IEC PWR SOC W/.205TAB &FUSE 10A250V
NYLON SPRING CLAMP
4" NYLON CABLE TIE
YCV40 CHICKEN-BEAK KNOB
AP MIXER SERIES PUSH SW BUTTON GREY
8' 3/18 SJT AC LINE CORD REMOVABLE
YBA200/YCV LOGO EMBOSSED ALUMINUM
YORKVILLE PRODUCT MANUAL
YORKVILLE WARRANTY CARD 2-YR UNLTD.
YCV40/WR/T POINT OF PURCHASE BOOK
9 CIR CABLE HOLDER .098
4-40 KEPS NUT ZINC
6-32 KEPS NUT ZINC
1/4-20 CAGE NUT C79-88142027
TO218 PREGREASED MICA 56-78-2AP
TO-220 PLASTIC TRANSISTOR INSULATOR
22AWG SOLID SC WIR
T&R JMP
24AWG SOLID SC WIR
RAD JMP
2.0W 3R9 5%
T&R
1.0W 10R 5%FLAME PROOF T&R RES
1/4W 47R 5%
T&R RES
1/8W 100R0 1%FLAME PROOF T&R RES
1/4W 100R 5%
T&R RES
1.0W 220R 5%FLAME PROOF T&R RES
1/4W 470R 5%
T&R RES
1/4W 620R 5%
T&R RES
1/4W 820R 5%
T&R RES
5.0W 1K 5%
BLK RES
1/4W 1K 5%
T&R RES
1.0W 1K 5%
T&R RES
1/4W 1K5 5%
T&R RES
1/2W 2K 5%
T&R RES
1/4W 2K 5%
T&R RES
1/4W 2K2 5%
T&R RES
1/4W 4K7 5%
T&R RES
1/4W 6K8 5%
T&R RES
1/2W 8K2 5%
T&R RES
1/4W 10K 5%
T&R RES
1/4W 10K 5%MINI
T&R RES
1/4W 18K 5%
T&R RES
1/4W 27K 5%
T&R RES
1/4W 33K 5%
T&R RES
1/4W 36K 5%
T&R RES
1/4W 47K 5%
T&R RES
1/4W 47K 5% .2"U
T&R RES
1/4W 82K 5%MINI
T&R RES
1/4W 100K 5%
T&R RES
1/4W 100K 5% .2"U
T&R RES
1/4W 100K 5%MINI
T&R RES
1/4W 113K 1%
T&R RES
1/4W 120K 5%
T&R RES
2.0W 220K 5%10MM BODY T&R RES
1/4W 220K 5%
T&R RES
1/4W 220K 5%MINI
T&R RES
1/4W 249K 1%MINI
T&R RES
1/4W 330K 5%
T&R RES
1/4W 470K 5%
T&R RES
1/4W 1M 5%
T&R RES
1/4W 2M2 5%
T&R RES
10" 9C-26AWG RIB 3/4" NOTCH 0.1"
RELAY 2C 01AMP DC24 015MA PC-S
ACC# 4EB3C1B LONG REVERB
4-40 X 5/16 PAN PH MS JS500
4-40 X 1/2 PAN PH MS JS500
6-32 X 1/4 PAN PH TAPTITE JS500
6-32 X 5/16 PAN PH MS JS500
6-32 X 3/8 PAN PH TAPTITE JS500
6-32 X 3/8 FLAT PH TAPTITE BO#4 HEA
#6 X 5/8 PAN PH TYPE A JS500 BLACK
#8 X 3/4 OVAL PH TYPE A BLACK OXIDE
#8 X 1" PAN QUAD TYPE AB B/O
10-32 X 1/4 PAN PH TAPTITE JS500
#10 X 3/4 PAN PH TYPE A BLACK OXIDE
#10 X 1" PAN PH TYPE A JS500 BLACK
10-32 X 1 1/8 FLAT PH MS JS500
10-32 X 1 1/4 PAN QD MS JS500 BLACK
#10 X 1 1/2 PAN PH TYPE A JS500
1/4-20 X 1 5/16 TRUSS PH MS JS500
YORKVILLE PRODUCT SCHEMATIC
.5 SPACER ID-.171 OD-.25 #912-500
Qty.
1
4
14
11
4
1
1
1
1
1
4
2
4
4
2
2
58
1
1
2
3
2
2
2
2
2
2
1
1
2
5
2
1
5
2
1
2
10
1
2
5
1
2
9
1
1
11
1
1
3
5
1
2
4
1
2
3
6
1
2
2
1
18
2
11
3
4
11
2
16
4
25
2
4
2
4
4
4
1
4
YS #
Description
3865
3858
7081
8482
8488
3511
8491
8820
8817
3522
3698
3731
3732
3733
12AX7
EL34
1324
1324M
1/2 PLASTIC HEX SPACER #6
3/4 PLASTIC HEX SPACER #4
12" 8R 60WPGM SPKR CELEST VINT30
3/8 1D FLAT WASHER
3/8 INT TOOTH LOCKWASHE ZINC
#6 FLAT WASHER NYLON
#10 SPLIT LOCK WASHER BO
#8 FLAT WASHER JS500
#10 FLAT WASHER FOR 3/16" BOLT
DPDT MINI PC VERT SNP ALT
SPST ROKR SW QUIK 180" AC PWR BL/BL
SPRING RETAINER FOR OUTPUT TUBE
9 PIN PC MOUNT TUBE SOCKET BE
8 PIN PC MOUNT TUBE SOCKET
12AX7 DUAL TRIODE PREAMP TUBE
EL34 E.H. EARLY MULLARD STYLE
YCV40 POWER 120VAC 60HZ
XFMR
YCV40
OUTPUT XFMR
Qty.
11
7
1
1
1
2
8
4
8
4
1
2
3
2
3
2
1
1
MODEL TYPE: YS1003
Block Diagram for YCV50
12AX7
V3
12AX7
12AX7
V2
V1
DISCONNECT POWER WHEN
REPLACING TUBES
EQ
DÉBRANCHÉ L’APPAREIL AVANT
DE REMPLACER LES LAMPES
Boost
Treble/Bass/Mid
Mono
1/4-inch
PREAMP
SPLITTER
DESIGNED AND MANUFACTURED BY YORKVILLE SOUND
POWER
EL34
V5
EL34
V4
Ch. 2
Volume
Preamp
V1:A
Preamp
V2:A
0 dB
Input
Channel
Select
Pre-Amp
Out
Channel
Select
K1
EQ
K1
Treble/Bass/Mid
Preamp
V1:B
Ch. 1
Volume
Preamp
V2:B
Amp In
Reverb
Drive
U2
B
Power
Amp
Reverb
Accutronics ©
4EBC1B
U1
B
Splitter
V3
Reverb
Rtn
Channel Select
Master
Volume
V4
V5
External
Speaker Out
+
-
External
Speaker Out
12-inch Speaker
YS#7081
8-ohms
-
+
Boost
Footswitch
BLOCK-DIAG-ycv50-1v20.ai
E
F
G
H
K2:B
1
C34
4N7
RED
+249Vdc
W20
I
J
K
50V
R29
1/2W
2K
C56
22U
R36
1/4W
100K
R60
1/4W
620R
22U
C6
50V
MINI
C51
82N
100V
DOWN UP
S4:B
MINI
400V
EBC
TO-92
C
50V
F
4148
VR69
1/4W
120K
10MM
R104
2.0W
150K
R100
2.0W
3R9
H
R91
10R
1.0W
FLMP
50V
C14
22U
-
OUTPUT
J5
3682
W15
3682
10
W14
4
T1
1324M
1
BLK
3
-36 to
-38Vdc
R90
1.0W
220R
T
R
S
-
-
-
EXTENSION
J6
11
OUTPUT
3682
W18
+168Vdc
12
13
#
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
9
10
11
12
13
NA: BIAS 350 mV ACROSS R91
AND 350mV ACROSS R92
CE: BIAS 300 mV ACROSS R91
AND 300mV ACROSS R92
10K
{T}
4520
.
D15
R94B
8K2
1/2W
8K2
1/2W
P12
M BIAS
+249Vdc
Q10
MJE340
K
63V
D18
51V0
C30
220N
1N5262B
0W5
50V
D19
51V0
-38Vdc
YCV50
DATE
VER# DESCRIPTION OF CHANGE
SEPT-23-2004 1.00
GT:DERIVED FROM M581 V11.00
OCT-15-2004 2.00
GT: PC#6748 R101 -> 2K2 (4847), R55 -> 4K7 (4827), D24 ->
.
.
20V0 (6465), ADD R104: 150K/2W (4790)
14
.
.
Increased route cutaway on preamp board
.
.
R53->3K9 (4850), R62->270K (4879), C19->100N (5865)
DEC-02-2004 .
GT:PC#6776 MOVED TOP MULTIPLE TO ADD ZIPPER
MAR-04-2005 2.10
GT:PC#6836:R78 27K #4833 --> 18K7 #5021 for bias
APR-26-2005 2.20
GT:PC#6865:STDBY FIX, ADDED #4599 x 3 AND #5299 x 1
.
.
GT:PC#6889: X61 #4599 --> 1K #4823 RESISTOR
MAY-27-2005 3.00
GT:PC#6886:ADD #4520 TRIMPOT 10K, R78->#4876 16R
.
.
AH: Moved some parts, Autoinsert needs more space
.
.
PC#6937, MODIFY TUBE SOCKET ROUTING AND DRILLING
.
.
PC#6965, MOVE ARC TRACE AWAY FROM TUBES
15
.
PC#6967, INCREASE CLEARANCS NEAR OUTPUT TUBES
.
NOV-25-2005 .
PC#7041:GT:UPDATED BIAS NOTE FOR R91&R92
DEC-14-2005 3.01
PC#7053:GT:R53 4850 3K9->4864 2K7, NEW BIAS FOR CE
.
BALVINDER CORRECTED TESTNODE PADS
4.00
.
SPACED W8 TRACE 6MM FROM SCREW HOLE
.
.
UPDATED K1,K2 FOR CLINCH
.
MAY-17-2006 .
PC#7125:GT:CHANGE #3914 RCA JACK TO #6541.
.
.
PC#7091:ENLARGE HOLE SIZE FOR #3522 KINK LEADS (S3
TO S6)
.
.
16
D
N
V
D
N
V
N
D
V
D
N
V
3700_DRW
C62
22U
1N5262B
0W5
-37Vdc
R77
1/4W
27K
D20
51V0
Q5
MPSA56
5104
TO92
R76
1/4W
27K
1N5262B
0W5
50V
D21
51V0
R80
1/4W
47K
Q4
MPSA56
5104
TO92
C61
22U
450V
C60
10U
1N5262B
0W5
450V
450V
C40
10U
J
D22
51V0
C41
10U
450V
I
1N5262B
0W5
63V
R79
1/4W
47K
2X_TRIODE_HCT
G
S
-
100V
R106
1/4W
100K
E
R
-
22U
C12
RED
3682
W19
W21
3682
R94
C B E
TO-92
D
RED
BRN
V5:A
Val
.
E C B
TO-126
GRN
R92
MINI
R41
1/4W
220K
R86
1/4W
820R
T
2
MODEL(S):-
D23
4148
250V
10MM
450V
{Voltage}
{Body}
MPSA06
R39
1/4W
100K
S4:A
-38Vdc
5
BLU
FLMP
NE5532N
+410Vdc
C39
10U
MJE340
9
4
25V
R93
5.0W
1K
IRF830
16
OUTPUT XFMR
M613 REVISION HISTORY
+400Vdc
V2:C
V4:B
2X_TRIODE_HCT
B
R37
1/4W
100K
R59
1/4W
10K
100V
V3:B
C50
22N
R35
1/4W
1K5
U1:B
C29
220N
V5:B
100V
R72
1/4W
1M
C63
47P
R101
1/4W
2K2
5101
TO92
FLMP
R95
1/8W
100R0
FLMP
R96
1/8W
100R0
15
A
100V
R38
1/4W
100K
C48
100N
R49
1/4W
4K7
V+
8
C11
100N
R81
1/4W
2M2
1N5240BRL
0W5 D13
10V0
C10
22U
S
50V
G
Val
V1:C
V3:C
"STYLE_P32"
C68
100N
63V
12AX7A
R71
1/4W
10K
100V
R68
1/4W
120K
R50
1/4W
330K
4007
PRE-AMP
+249V
R42
1/4W
220K
R46
1/4W
1M
M
REVERB
R119
1/4W
18K
R70
1/4W
18K
P11:A
R47
1/4W
470R
R89
1.0W
220R
-36 to
-38Vdc
-37Vdc
R78
1/4W
16K
12AX7A
D12
.
3Vac
3Vac
2N2
C75
U1:C
D
R102
1/4W
470R
C84
220N
C54
4N7
3682
W27
R110
2.0W
220K
8
14
D6
W16
3682
C55
82U
W10
3682
REVERB RTN
+28Vdc
Q12
BC550C
C5
100U
D5
4007
7
100V
C25
100N
7
FLMP
200V
Q8 IRF830
C28
220N
4007
W12
6
GRN
GRN
4
U3:B
U3:A
D10
4007
3682
6
250V
D4
J7
R87
1/4W
820R
400V
V3:A
P10:A
R43
1/4W
82K
V-
20K
15A
5
2
D9
4007
100V
YEL
GRY
1
4007
C57
100N
1324
6880
4N35
4007
+24Vdc
OUT
GND
6731
TO220
4007
GRY
BLK
2
250V
IN
D3
W13
63V
275V
C53
22N
T2
IEC_RECT
+33Vdc
3682
5
C38
470U
RED
4
T2A
Q1
7824
C49
22N
100V
R48
1/4W
10K
R103
1/4W
470K
D7
4007
D8
3682
W28
BLK
S7
3682
W17
12AX7A
C47
10N
R45
1/4W
1M
J8
16V
R66
1/4W
47R
.
3682
W26
3
RED
1
MASTER VOLUME
250V
20K
15A
M
C8
100U
R65
1/4W
47K
DOWN UP
LD2
REVERB SEND
R52
1/4W
2K2
1N5250B
0W5
C65
470P
Val
V4:A
PRE-AMP
10R
1.0W
FLMP
8
V+
4148
D17
D16
4
R67
1/4W
10K
C64
4N7
R98
1/4W
330K
Transformer
3682 3682
W8
SPST Switch W9
100U
C9
NE5532N
+415Vdc
G D S
TO-220
S5:B
C4
22U
50V
4148
16V
R55
1/4W
4K7
LD1
6399
YEL
6398
RED
6467
10K
NTC
R63
.
R53
1/4W
2K7
Q9
BC550C
TO92
5101
20V0
D24
DOWN UP
LD4
BOOST
400V
+170Vdc
U2:B
U2:C
R97
1/4W
10K
S3:A
S3:B
6
R62
1/4W
270K
R51
1/4W
470K
RAD
STANDBY
C52
100N
36K
1/4W
R113
63V
36K
1/4W
R75
C44
10U
C13
100U
63V
0W5
1N5262B
D14
51V0
1M
1/4W
R73
250V
D11
J3
R40
1/4W
27K
R105
1/4W
1K
R64
1/4W
47K
R33
1/4W
47K
Mini
R54
1.0W
1K
4007
11
17
DOWN UP
R83
1/4W
100R
R82
1/4W
47R
63V
C69
2U2
C36
2N2
9
R74
1/4W
2K2
.
R107
1/4W
10K
8
22U
C7
C27
470N
20K
-50Vdc
S
.
R24
1/4W
47K
P5:A
MASTER
15A
P4:A
MID
R
NE5532N
250V
C83
4N7
M
T
Gold
5
50V
500K
15A
100V
R44
1/4W
100K
C21
47N
R12
1/4W
1K5
63V
50V
C31
1N
P3:A
BASS
M
W11
3682
S5:A
R25
1/4W
10K
TO92
5101
R27
1/4W
2K2
5906
RED
.
R13
1/4W
33K
C82
470P
R9
1/4W
120K
R8
1/4W
120K
R10
1/4W
120K
63V
C26
330N
R7
1/4W
1K5
5103
TO92
15A
0.8Vdc
C3
22U
BOOST
R32
1/4W
10K
500K
M
J4
U1:A
Q7
BC550C
RAD
100V
1.2Vdc
4
50V
Q2
MPSA06
R14
1/4W
100K
P2:A
TREBLE
M
C20
47N
12AX7A
8
100V
100K
250V
PRE-AMP
12AX7A
V2:A
R114
1/4W
100K
200V
C46
1N
R34
1/4W
2K2
C18
1N5
400V
PRE-AMP
P1:A
DRIVE
1000V
R11
1/4W
113K
C17
2N2
15A
M
13
50V
R85
1/4W
47R
R26
1/2W
2K
K2:C
K1:B
1B
C19
100N
159Vdc
C81
1N
C80
1N
400V
.
R6
1/4W
249K
400V
+249Vdc
C32
470P
S
-
PRE-AMP-OUT
100V
+249Vdc
6
R
-
R108
1/4W
10K
D1
K1:A
F1
C66
220P
T
C67
470N
R17
1/4W
1K5
MID
R16
1/4W
1M
DOWN UP
P6:A
S6:B
M
12
R109
1/4W
100K
BRIGHT
K2:A
116Vdc
V1:B
22U
C2
NE5532N
+1.2Vdc
100V
20K
10
DOWN UP
50V
TO92
5101
50V
CHANNEL
LD3
CHNL1
P9:A
C70
22U
M
R31
1/4W
10K
3
U2:A
R20
1/4W
100K
BASS
4148
C22
47N
P7:A
R21
1/4W
100K
DOWN UP
MINI
R5
1/4W
220K
M
15A
S6:A
63V
500K
TO92
5103
V2:B
PRE-AMP
12AX7A
50V
Q6
BC550C
R111
1/4W
1K
500K
R19
1/4W
470K
100V
C45
100N
Q3
MPSA06
R84
1/4W
100R
D2
R23
1/4W
100K
+162Vdc
C23
47N
2
LD5
CHNL2
5908
GRN
Q11
MPSA06
100V
R22
1/4W
100K
400V
J2
.
R61
1/4W
620R
R30
1/4W
2K2
5907
YEL
C24
22N
100V
S
4K7
1/4W
R99
R28
1/4W
10K
Mini
C71
470P
R
Gold Gold
R88
1.0W
1K
R112
1/4W
27K
R18
1/4W
113K
C35
220P
15A
500K
V
PWR-AMP-IN
50V
TREBLE
P8:A
W4
7
U
FOOTSWITCH
5103
TO92
4
5
T
T
1B
15A
W1
S
K1:C
100K
C1
1U
BLACK
R
+249Vdc
M
R3
1/4W
1K5
R2
1/4W
1M
BLACK
Q
.
400V
+1.2Vdc
RING
P
1
C37
1N5
2X_TRIODE_HCT
{Body}
CLEAN VOLUME
W3
W2
3
C33
1N
PRE-AMP
12AX7A
V1:A
R4
1/4W
47K
O
R57
1/4W
220K
250V
R15
1/4W
47K
J1
YELLOWYELLOW
N
.
C16
47N
+158Vdc
M
R58
1/4W
220K
250V
R56
1/4W
47K
R1
1/4W
113K
2
L
4148
D
50V
C
C15
22U
B
A
Product
YCV50
TUBE GUITAR AMP
PCB# M613
Sheet 1 of 2
Rev: 4V00
Date: Mon Sep 11, 2006
Filename: M613-4V00sch.sch2002
L
M
N
O
P
Q
R
S
T
U
V
17
C39
C55
47P
C63
R54
120K
2N2
X62
3522
X63
1K
1.0W
R55
4K7
4V00
3/4
W12
+24V
Top Assy M613 4V00
BLACK
GREEN
OUTPUT
-
W6
TO W29
7
-
GREEN
W7
TO W24
-
R107
R108
W36
4/4
YCV50
-
7
-
M613 OUTPUT
GREY
W13
M613
EXTENSION
W11 WHITE
C38
PWR-AMP-IN
PRE-AMP-OUT J4
J5
D5
W30
R60
620R
10K
10K
4V00
D3
4007
22U
50V
OUTPUT XFMR
BLACK
C54
4N7 250V
RT
V
6451
D4
C2
J3
X57
FOOTSWITCH
W14
D6
C53
Gold
J2
LINE
NEUTRAL
W10
-
7
J6
470U
63V
1M
120K
10K
100N
C11
R59
R70
18K
18K
R119
100N
W9
-
.
7
Gold
W15
W29
R72
R68
R71
R40
R38
R39
10N
82N
4K7
620R
X33
YCV50
2/4
4007
RT
V
NE5532N
27K
470P C65
100K
100K
X26
10K
R35
1K
X28
X29
1K5
R105
R49
R47
R45
R48
R62
X55
470R
1M
10K
270K
X31
M613
4V00
BLACK
TO W6
RT
V
4N7
4148
D17
4148
D16
47K
R64
47R
R66
10K
R97
10K
R67
NE5532N
100N
220P
100K
R109
R46
100N
W28
RED
82U
450V
Pcb Mech M613 4V00
SEE LAYOUT DOCUMENTATION
470N
C67
R44
X54
1M
82K
C49
100K
22U
50V
22N
400V
RT
V
SHEAR
METAL BACK
ETCH
GUIDE
100K
100K
X56
R43
X60
R106
100K
8K2
1/2W
R104 R94
100U
63V
8K2
1/2W
150K
2.0W
RT
V
10U
450V
X32
R114
100K
R52
D21
D20
D19
D18
51V0
51V0
51V0
51V0
2K2
R36
R37
X53
X22
X21
C24
22N
400V
470N
R12
R21
R94B
20V0
2K7
R53
3R9
2.0W
X23
X52
C23
47N
C57
100N
R57
R16
R58
1M
220K
X49
1K5
100K
X16
X15
4N35
470R
10V0
4007
D13
D12
R102
2K2
220N
330K
470K
4148
D15
MPSA56
220K
47K
C31
R10
X14
1N
120K
R9
120K
R78
16K
220K
47K
X20
C22
47N
X19
47K
C33
X18
X17
R56
10K
2K2
10K
1N
R85
47R
R31
R28
C45
100N
R29
R30
R8
120K
R41
R79
R76
R80
MPSA56
220N
X46
10R
1.0W
47K
X59
100R0
100R0
1K
5.0W Val
220R
1.0W
3984
X47
R96
D23
4148
MPSA06
470P
249K
1N
R87
R86
R42
R77
R91
R90
220R
1.0W
R89
X45
10R
1.0W
820R
820R
220K
27K
X44
27K
X48
X13
1K
1.0W
X1
10K
47R
2K2
R32
R82
R27
330N
C26
1K5
RING
R7
R95
5882
W17
R88
R26
X11
2K
1/2W
R6
BC550C
CR
NCR
W18
X12
X9
X8
4148
C46
R25
1N
10K
X10
47N
47N
33K
R1
MPSA06
47K
100K
X7
100K
C71
470P
113K
NOR
CL
NCL
SHEAR
2K
1/2W
R83
D2
100R
R22
100K
27K
R112
R33
C83
R24
R23
47K
4N7
5841
47N
X6
470K
X2
1N
R20
R13
220K
R3
R2
R4
R5
1K5
1M
47K
470P
C32
X4
X3
R19
NOL
SHORT AXIS
W21
220K
2.0W
RED LD2
6398
S3
.
Gold
W8
RT
22N
V 6435
275V
SHEAR
W25
W27
W26
4007
51V0
D22
RED
TO W20
RT
V
D8
R110
10U
C41 450V
RT
V
MJE340
Q10
RT
V
C44 10U
63V
GREEN
4007
10U
450V
D10
4007
D24
10U
450V
C13
D9
4007
4007
BC550C
6880
U3
2M2
R81
Q1
RT
V
4007
D7
ON
STANDBY
RCA
REVERB RTN
3674
Q9
C60
3732
100U
Q8
C5 25V
R63
D11
X39
Gold
BLACK
W16
100N
5865
R75
36K
J7
J8
7
GREEN
RED
REVERB
X64
W5
V3
C52
C25
X42
P11
C75
RCA
REVERB SEND
R51
470K
2N2
C36
22U
50V
STANDBY YEL LD1
6399
15A
3674
TO220
R100
R113
36K
4007
C51
C47
C48
C40
R61
G3
CR
NCR
Q12
BC550C
W24
TO W7
R74
12AX7A
SPLITTER
P10
20K
4423
G3
NOR
CL
LONG AXIS
C84
NCL
VCD
ORIGIN
5882
NOL
INSERT
250V
220N
10K
GREEN W23
X25
X34
1M
51V0
2K2
C56
22U
50V
P6
MID
R69
C10
22U
50V
SHEAR
CLINCH
ORIGIN
C28
330K
R50
V2
X41
RED
V5
250V
220N
Q4
6731
7824
X40
V4
XFMR W19
R92
Q5
BIAS
C29 R
R9 103
8
R101
W34
3674
R73
D14
X43
W39
RT
V
C30
C61
22N
400V
C50
X24
X38
BROWN
22U
C62
R17
12AX7A
3674
10K
50V
50V
22U
CR
3984
Val
NCR
XFMR
BLUE
113K
XC163
Z352
6730
IRF830
NOR
RT
V
W35
P12
S6
R18
1K5
X58
X37
X36
X35
TO W4
BLACK
CL
R93
TO W3
YELLOW
NCL
W1
EL34EH
OUTPUT
C18
1N5
NOL
EL34EH
OUTPUT
C17
2N2
220P
C35
P7
BASS
50V C3 MASTER VOLUME
20K
15A
22U
50V
4423
C14
C6
G2
W37
C81
C15
BRIGHT
WHT
100U
16V
SIG
V1
12AX7A
PRE-AMP
C27
1N5
C37
22U
50V
G1
TO W1
W20
Q6
Q3
1K
R111
X61
4423
22U
G2
R11
RED
TO W25
P8
X50
3732
CHANNEL
S5
4425
C7 C8
15A
SIG
W4
WHT
4424
47K
20K
R65
6541
113K
50V
Q11
C82
SL
EE
VE
TIP
GREEN
W2
2K2
R34
MPSA06 BC550C
C70
22U
P9
15A
X51
BLACK
RING-SW
3921
TIP-SW
100N
Q7
TO W2
INPUT
C34
4N7
X65
500K
6541
YELLOW
W3
J1
C19
5865
C69
2U2
63V
4425
1B
X30
C1
P4
MID
100K
15A
3522
Q2
C16
3732
X5
63V
4423
3522
3522
1U
BASS
TREBLE
500K
22U
50V
G1
P2
CLEAN VOLUME
C12
CR
NO
100K
R14
C21
15A
U1
NCR
C20
PRE-AMP
S4
4425
4424
20K
C9
100U
16V
NOR
NC
NO
MASTER
15A
C4 22U
50V
U2
C64
CL
RELAY 2C
P3
500K
YCV50
4V00
GRN
CHNL2
C66
NCL
4425
1B
BlankSize - 18600x12800
C68
1/4
NOL
-
RELAY 2C
BOOST
WHT
100K
15A
NC
DRIVE
TREBLE
500K
R99
4K7
M613
X27
C80
4425
P5
K1
C
C
15A
+
K2
500K
YEL
-
P1
CHNL1
5908
LD5
+
LD4
RED
4148
D1
100R
R84
StepAndRepeat - X1@0.000Y2@6.400
-
+
BOOST
5907
LD3
R15
BlankSize - 18600x12800
WHT
ORIGIN
MULTIPLE
DON'T MOVE
SEE LAYOUT DIAGRAM
M613 REVISION HISTORY
MODEL(S):#
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
9
10
11
12
13
YCV50
DATE
VER# DESCRIPTION OF CHANGE
SEPT-23-2004 1.00
GT:DERIVED FROM M581 V11.00
OCT-15-2004 2.00
GT: PC#6748 R101 -> 2K2 (4847), R55 -> 4K7 (4827), D24 ->
.
.
20V0 (6465), ADD R104: 150K/2W (4790)
.
.
Increased route cutaway on preamp board
.
.
R53->3K9 (4850), R62->270K (4879), C19->100N (5865)
DEC-02-2004 .
GT:PC#6776 MOVED TOP MULTIPLE TO ADD ZIPPER
MAR-04-2005 2.10
GT:PC#6836:R78 27K #4833 --> 18K7 #5021 for bias
APR-26-2005 2.20
GT:PC#6865:STDBY FIX, ADDED #4599 x 3 AND #5299 x 1
.
.
GT:PC#6889: X61 #4599 --> 1K #4823 RESISTOR
MAY-27-2005 3.00
GT:PC#6886:ADD #4520 TRIMPOT 10K, R78->#4876 16R
.
.
AH: Moved some parts, Autoinsert needs more space
.
.
PC#6937, MODIFY TUBE SOCKET ROUTING AND DRILLING
.
.
PC#6965, MOVE ARC TRACE AWAY FROM TUBES
.
.
PC#6967, INCREASE CLEARANCS NEAR OUTPUT TUBES
NOV-25-2005 .
PC#7041:GT:UPDATED BIAS NOTE FOR R91&R92
DEC-14-2005 3.01
PC#7053:GT:R53 4850 3K9->4864 2K7, NEW BIAS FOR CE
.
4.00
BALVINDER CORRECTED TESTNODE PADS
.
SPACED W8 TRACE 6MM FROM SCREW HOLE
.
.
.
UPDATED K1,K2 FOR CLINCH
MAY-17-2006 .
PC#7125:GT:CHANGE #3914 RCA JACK TO #6541.
.
.
PC#7091:ENLARGE HOLE SIZE FOR #3522 KINK LEADS (S3
.
.
TO S6)
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
D
V
N
M581 DRILL HISTORY
MODEL(S):#
1
2
3
4
5
6
DATE
D
D
D
D
D
D
MODEL(S):#
1
2
3
4
5
6
PC#
PC
PC
PC
PC
PC
PC
YCV50
VER# DESCRIPTION OF CHANGE
V
N
V
N
V
N
V
N
V
N
V
N
M581 PENDING CHANGES
YCV50
PENDING CHANGE
X
X
X
X
X
X
PRODUCTION NOTES
1. RTV MUST BE ADDED TO THE FOLLOWING CAPS 5. R63 #6467: APPLY THERMAL
C1,C16,C19,C17,C70 BETWEEN C84,C28,C60,C15
COMPOUND GENEROUSLY
BETWEEN C49,C50, ADDED TO C15,C7,C8,C3,C9
BETWEEN PART AND HEATSINK
C56,C14,C6,C10,C4,C2 AND C12
6. NA: BIAS 350mV ACROSS R91
2. C53 IS 22N FOR BOTH NORTH AMERICA AND CE
AND 350mV ACROSS R92
3. C3,C7,C6 MUST BE LOW PROFILE PT#5631
CE: BIAS 300mV ACROSS R91
4. C8,C9 MUST BE LOW PROFILE PT#5879
AND 300mV ACROSS R92
*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY
M613 POT LIST
YCV50 TUBE AMP
MODEL(S):REF
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
.
FUNCTION PART# KNOB
DRIVE
TREBLE
BASS
MID
MASTER
MID
BASS
TREBLE
CLEAN VOLUME
MASTER VOLUME
REVERB
.
#4425
#4424
#4425
#4423
#4425
#4423
#4425
#4424
#4425
#4423
#4424
.
#8430
#8430
#8430
#8430
#8430
#8430
#8430
#8430
#8430
#8430
#8430
.
AS OF
11/00
11/00
11/00
11/00
11/00
11/00
11/00
11/00
11/00
23/04
11/00
.
"STYLE_P32"
3796 on this
device only.
Lots of goop
on the thermistor.
LEAD/PIN REFERENCE
IRF830
MJE340
MPSA56
MPSA06
COM1 COM2
BC550C
4N35
G D S
TO-220
ECB
TO-126
EBC
TO-92
C B E
TO-92
G2
4
5
P 3
H 2
1
NC
8
NC1
NC2
NO1
NO2
NE5532N
G1
4
6
NC
2K
7
H
2G 2
K
G3
3700_DRW
H
H
5
1P
6
3
2P
7
8
1
9
HT
1G
1K
Z352
2 of 8701
2 of 3850
2 of 8829
- to hold z352 in place
PCB
2 of 8741
YCV50BLUE m613 Service Update for V2.10 boards
April 2005 boards have been reworked as described in this document.
To address PC#6865 a 22AWG wire, part # 3947 jumper, needs to be soldered from P10
to S3 on the bottom side of the board as shown:
YCV50BLUE m613 Service Update for V2.10 boards (additional)
1. First complete the Service fix PC#6865 as described in the pdf:
Service_YCV50-m613_Update_for_V2.10_PC#6865.pdf
To upgrade the unit from v2.10 to v2.20 PC#6889, complete the following:
2. Replace jumper X61 with a 1K resistor, #4823:
WC 10
BR OWN
BROWN
WC 13
B LU E
BLUE
C 53
250VAC
EYE6
680N
GR E E N
O U T P UT -T U B E
6L6B
#3638
WC 5
WC 9
GR N
RED
TO E YE 6
RE D
RE D
JB5
GR N
EY2
WC 14
EY4
WC 15
F
JB6
F
RED
6L6B
WC 12
F
WC 6
F
WC 3
GR N
C 41
WC 1
O U T P UT -T U B E
RED
GRE EN
GR EE N
WC 2
WC 4
EY9
EYE5
BLK
BLK
T O OUT P UT
T R A NS F O R ME R
T O OUT P UT
T R A NS F O R ME R
GREEN
B LAC K
E X T E N S IO N
O UTP UT
TO EY5
G rn/Y el wire
soldered to ground lug
1324E
Y C V 5 0C E
E X P OR T AC
W IR IN G
April 14/05
By G.K
wiring-YCV50-CE-AC
1324M
TO _E Y7
EYE8
IN P U T
F
WHIT E
B L U NE E U T R A L
BROWN
LIVE
B LA C K B LA CK
RED
RED
BLK
WC 7
V4
TO EY4
GR AY
EYE7
TO _E Y8
G R E EN
Y E L LO W
W H IT E
RED
JB1
WC 11
GR AY
+ 2 4 V WC 8
S UPPLY
B LA C K
RED
T O E Y E 9 ME T A L _ B A C K
G RAY
G R AY