YORKVILLE Custom Valve YCV80 User manual

U.S.A.
Yorkville Sound Inc.
4625 Witmer Industrial Estate
Niagara Falls, New York
14305 USA
Voice: [phone]
Fax: [phone]
WORLD HEADQUARTERS
WEB ACCESS: http://www.yorkville.com
CANADA
Yorkville Sound
550 Granite Court
Pickering, Ontario
L1W-3Y8 CANADA
Voice: [phone]
Fax: [phone]
Quality and Innovation Since 1963
Printed in Canada
SERVICE MANUAL
YCV80/YCV80Q
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TYPE: YS1034

IMPORTANT SAFETY INSTRUCTIONS
safety-4v3.eps • Oct. 26/05
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.
INSTRUCTIONS PERTAINING TO A
RISK OF FIRE, ELECTRIC SHOCK,
OR INJURY TO PERSONS
Read Instructions
The Owner’s Manualshould be read and understood
before operation of your unit. Please, save these instruc-
tions 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 OPERATETHE UNIT.
Service
The unit should be serviced only by qualified service personnel.
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
INSTRUCTIONS RELATIVES AU RISQUE
DE FEU, CHOC ÉLECTRIQUE, OU
BLESSURES AUX PERSONNES
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, assurez-
vous 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.

YCV80Parts List 4/8/2004
YS # Description Qty. YS # Description Qty. YS # Description Qty.
6397 JEWELED PILOT LAMP AMBER REG V1 1 3902 72" RCA PREFAB CABLE STEREO 1 8807 6-32 X 5/16 PAN PH MS JS500 12
5906 RED 3MM LED 1V9 20MA .4SPCER T&R 1 3914 RCA SNGL PCB MT HORZ 2 8801 6-32 X 3/8 PAN PH TAPTITE JS500 4
6398 RED 5MM LED 1V5 20MA HIGH EFF 1 3923 XLR MALE PCB MT HORZ MTHOLE-V SNAP 1 8829 6-32 X 3/8 FLAT PH TAPTITE BO#4 HEA 18
6399 YEL 5MM LED 1V5 20MA HIGH EFF 1 3451 EYELET SMALL 0.089 OD PLATED 56 8761 6-32 X 1/2 PAN PHIL MS ZINC CLEAR 3
5907 YEL 3MM LED 1V9 20MA .4SPCER T&R 1 3482 LOWPROFILE FUSEHOLDER 1/4" BUSSMANN 1 8757 #6 X 5/8 PN PH TYPE A ZN 2
5908 GRN 3MM LED 1V9 20MA .4SPCER T&R 1 2453 3.0 AMP SLO-BLO .25X1.25 FUSE 1 8722 #8 X 1" PAN QUAD TYPE AB B/O 4
6825 1N4148 75V 0A45 DIODE T&R 7 8456 10.0" STRAP HANDLE, NICKEL COVERS 1 8809 10-32 X 1/4 PAN PH TAPTITE JS500 5
6830 1N5408 1000V 3A0 DIODE 4 8604 10-32 T NUT 10 8749 10-32 X 1/2 QDX PH TAPTITE JS500 8
6438 1N4007 400V 1A0 DIODE T&R 6 8889 RUBBER GROMMET #2183-034-BLK 4 8750 #10 X 1/2 PAN PH TYPE A ZINC 16
6461 1N5240BRL 10V0 0W5 ZENER 5% T&R 1 3552 NYLON SPRING CLAMP 4 8756 #10 X 3/4 PAN PH TYPE A BLACK OXIDE 10
6475 1N5262B 51V0 0W5 ZENER 5% T&R 6 3810 4" NYLON CABLE TIE 8 8843 10-32 X 1 1/8 FLAT PH MS JS500 2
6871 MC7915CT TO220 N 15V0 REG V2 1 8430 YCV40 CHICKEN-BEAK KNOB 11 8786 10-32 X 1 1/4 PAN QD MS JS500 BLACK 8
6872 MC7815CT TO220 P 15V0 REG V1 1 8504 CORNER, 2 LEGS NOTCED LIP NICKEL 8 8862 #10 X 1 1/2 PAN PH TYPE A JS500 4
5101 BC550C TO92 NPN TRAN T&R TB 4 8633 ROUND PUSH BUTTON 1/4" BLACK 6 8770 1/4-20 X 1 5/16 TRUSS PH MS JS500 4
5102 BC560C TO92 PNP TRAN T&R TB 2 8661 BUTTON KNOB FLAT GREY 1 8905 YORKVILLE PRODUCT SCHEMATIC 1
5103 MPSA06 TO92 NPN TRAN T&R TA 4 3428 8' 3/18 SJT AC LINE CORD REMOVABLE 1 3663 SNAP IEC PWR SOC W/.250TAB FOR .060 1
5104 MPSA56 TO92 PNP TRAN T&R TA 3 8260 YCV40 LOGO EMBOSSED ALUMINUM 1 3741 .5 SPACER ID-.171 OD-.25 #912-500 4
6873 MJE340 TO126 NPN TRAN TG 1 8910 YORKVILLE PRODUCT MANUAL 1 3865 1/2 PLASTIC HEX SPACER #6 12
6730 IRF830 TO220 NCH MFET TN 1 8900 YORKVILLE WARRANTY CARD 2-YR UNLTD. 1 3858 3/4 PLASTIC HEX SPACER #4 15
6882 TL072CP IC FET DUAL OP AMP 6 3638 12 CIR CABLE HOLDER .098 2 7080 12" 8R 80WPGM SPEAKER CELESTION 2
6880 4N35 OPTO-COUPLER 1 3674 9 CIR CABLE HOLDER .098 2 8482 3/8 1D FLAT WASHER 1
5408 _47P 100V 10%CAP T&R BEAD NPO 1 8800 6-32 KEPS NUT ZINC 9 8488 3/8 INT TOOTH LOCKWASHE ZINC 1
5197 220P 100V 2%CAP T&R RAD CER.2"NPO 8 8890 1/4-20 CAGE NUT C79-88142027 4 3511 #6 FLAT WASHER NYLON 12
5417 330P 50V 10%CAP T&R BEAD NPO 1 3796 ELASTOMER PAD TSIL 1.0X0.8 3 8820 #8 FLAT WASHER JS500 4
5201 470P 100V 5%CAP T&R RAD CER.2"NPO 3 3850 TO-220 PLASTIC TRANSISTOR INSULATOR 3 8817 #10 FLAT WASHER FOR 3/16" BOLT 16
5416 470P 50V 10%CAP T&R BEAD NPO 1 4597 22AWG STRAN TC WIR JMP 5 3436 DPDT PUSH SW PCMT H BREAK B4 MAKE 1
5418 470P 250V 20% Y2 CAP DISC T&R 1 4599 22AWG SOLID SC WIR T&R JMP 71 3522 DPDT MINI PC VERT SNP ALT 6
5816 680P 100V 5%CAP T&R RAD CER.2"NPO 1 2005 1.0W 0R47 5%FLAME PROOF T&R RES 1 3698 SPST ROKR SW QUIK 180" AC PWR BL/BL 1
5206 __1N 400V 5%CAP T&R RAD .2"FLM 6 2008 1.0W 10R 5%FLAME PROOF T&R RES 4 3731 SPRING RETAINER FOR OUTPUT TUBE 4
5208 __2N2 400V 5%CAP T&R RAD .2"FLM 1 4612 1/2W 18R 5% T&R RES 3 3732 9 PIN PC MOUNT TUBE SOCKET BE 3
5275 __3N3 100V 5%CAP T&R RAD .2"FLM 3 4816 1/4W 33R 5% T&R RES 1 3733 8 PIN PC MOUNT TUBE SOCKET 4
5209 __4N7 250V 5%CAP T&R RAD .2"FLM 1 4817 1/4W 47R 5% T&R RES 4 5881 6L6 TETRODE OUTPUT TUBE BULK 4
6451 __4N7 250V 20%CAP BLK 'Y' 10MM AC 1 2019 1/8W 100R0 1%FLAME PROOF T&R RES 2 12AX7B 12AX7 DUAL TRIODE PREAMP TUBE 3
5272 __6N8 100V 5%CAP T&R RAD .2"FLM 1 4852 1/4W 100R 5% T&R RES 1 1327 YCV80 POWER XFMR 1
5204 _10N 100V 10%CAP T&R RAD .2"FLM 3 2022 1.0W 220R 5%FLAME PROOF T&R RES 4 1327M YCV80 OUTPUT XFMR 1
5834 _10N 250V 20%CAP BLK RAD POLY FLM 1 2023 1/8W 220R0 1%FLAME PROOF T&R RES 2
5210 _22N 100V 10%CAP T&R RAD .2"FLM 1 4857 1/4W 220R 5% T&R RES 3
5840 _22N 400V 10%CAP BLK RAD POLY FLM 2 4736 5.0W 390R 5% BLK RES 1
6435 _22N 275V 20%CAP BLK 'X2' 15MM AC 1 4621 1/2W 470R 5% T&R RES 1
5224 _47N 100V 10%CAP T&R RAD .2"FLM 5 4821 1/4W 470R 5% T&R RES 3
5841 _47N 250V 10%CAP RAD POLYFILM BULK 2 5019 1/4W 620R 5%MINI T&R RES 4
5226 _68N 100V 5%CAP T&R RAD .2"FLM 1 4822 1/4W 820R 5% T&R RES 4
5227 _82N 100V 5%CAP T&R RAD .2"FLM 1 4823 1/4W 1K 5% T&R RES 3
5228 100N 100V 5%CAP T&R RAD .2"FLM 6 4824 1/4W 1K5 5% T&R RES 3
5865 100N 250V 10%CAP BLK RAD POLY FLM 1 4791 1/4W 1K54 1% T&T RES 1
5229 150N 63V 10%CAP T&R RAD .2"FLM 2 4631 1/2W 2K 5% T&R RES 1
5231 220N 63V 10%CAP T&R RAD .2"FLM 2 4705 2.0W 2K2 5% BLK RES 1
5882 220N 250V 10%CAP BLK RAD POLY FLM 2 6104 1/4W 2K2 5%MINI T&R RES 3
5233 330N 63V 5%CAP T&R RAD .2"FLM 5 4714 1/4W 2K21 1% T&R RES 1
5234 470N 63V 10%CAP T&R RAD .2"FLM 1 4827 1/4W 4K7 5% T&R RES 12
5256 __1U 63V 5%CAP T&R RAD .2"FLM 1 4663 1/2W 8K2 5% T&R RES 1
5945 _10U 63V 20%CAP T&R RAD .2"EL 1 4863 1/4W 8K2 5% T&R RES 1
5959 _10U 450V 20%CAP BLK EL 4 4829 1/4W 10K 5% T&R RES 20
5631 _22U 50V 20%CAP T&R 6X7MM .2"EL 5 4856 1/4W 12K 5% T&R RES 2
5961 _33U 16V 20%CAP T&R RAD .2"NP 6 4831 1/4W 18K 5% T&R RES 2
5902 82U 450V 20%CAP BLK 22X30MM 2 4832 1/4W 22K 5% T&R RES 2
5267 100U 25V 20%CAP T&R RAD .2"EL 3 4902 1/4W 24K 5% T&R RES 4
5914 100U 63V 20%CAP BLK 10X13MM EL 1 4833 1/4W 27K 5% T&R RES 3
5618 470U 25V 20%CAP BLK 10X15MM EL 4 4840 1/4W 33K 5% T&R RES 2
TFS-2B TRAYNOR DUAL FOOTSWCH 10' CORD-BULK 1 4868 1/4W 36K 5% T&R RES 3
4497 _10K B LIN 9MM HORIZONTAL P29 2 4853 1/4W 39K 5% T&R RES 2
4423 _20K 15AAUDIO 9MM P32 4 4834 1/4W 47K 5% T&R RES 8
4424 100K 1B LIN 9MM P32 2 4848 1/4W 62K 5% T&R RES 1
4425 500K 15AAUDIO 9MM P32 5 4836 1/4W 68K 5% T&R RES 1
713 25 X 20 X 50 2 MIL PLASTIC BAG 1 4586 1/4W 82K 5%MINI T&R RES 2
3975 SNAP ON 0.718" INSULATING BUSHING 3 6120 1/4W 100K 5%MINI T&R RES 14
3976 SNAP ON 0.843" INSULATING BUSHING 2 4776 1/4W 113K 1% T&R RES 3
8461 TRIM CLIP (PLATED BLK ZINC) 4 4849 1/4W 180K 5% T&R RES 1
8522 RUBBER BUMPER WITH WASHER -SMALL- 4 4668 2.0W 220K 5%10MM BODY T&R RES 1
3478 CLIP 205/187X032 18-22AWG DISCO/INS 2 4841 1/4W 220K 5% T&R RES 8
3489 CLIP 250X032 18-22AWG DISCO/INSL 4 6145 1/4W 249K 1%MINI T&R RES 1
3490 CLIP 250X032 14-16AWG DISCO/INSL 1 4843 1/4W 470K 5% T&R RES 1
3491 CLIP 205/187X020 18-22AWG DISCO/INS 2 4880 1/4W 680K 5% T&R RES 1
3494 CLIP 205/187X020 14-16AWG DISCO/INS 6 4844 1/4W 1M 5% T&R RES 8
3601 RING TERMINAL 16AWG WIRE & #8 SCREW 3 4845 1/4W 2M2 5% T&R RES 3
3682 250 MALE PCB TAB REEL 16 3700 RELAY 2C 01AMP DC24 015MA PC-S 2
NYS224 280 PLUG NEUTRIK NYS224 1 3537 ACC# 4EB3C1B LONG REVERB 1
3498 1/4" JCK PCB MT HORZ 5 8865 4-40 X 5/16 PAN PH MS JS500 30
3528 1/4" JCK PCB MT HORZ GOLD TR_ 2 8842 #4 X 5/16 PAN QUAD TYPE A JS500 BLK 2
3921 1/4" JCK PCB MT VERT STER RT SWT 1 8832 6-32 X 1/4 PAN PH TAPTITE JS500 15

# Part# Description
Labeled Components
1 8260 TRAYNOR LOGO
2 7080 12" 8R 80WPGM SPEAKER CELESTION
3 8461 TRIM CLIP (PLATED BLK ZINC)
4Z435 YCV80 GRILLE* ‡ current model only!
5TFS-2B TRAYNOR DUAL FOOTSWCH 10' CORD
6 8522 72" RCA PREFAB CABLE STEREO
73537 ACC# 4EB3C1B LONG REVERB
88504 CORNER, 2 LEGS NOTCED LIP NICKEL PLATED
98522 RUBBER BUMPER WITH WASHER -SMALL-
10 8770 1/4-20 X 1 5/16 TRUSS PH MS JS5
11 8456 10.0" STRAP HANDLE, NICKEL COVERS
12 6397 JEWELED PILOT LAMP AMBER REG
13 8430 CHICKEN-BEAK KNOB
14 8633 ROUND PUSH BUTTON 1/4" BLACK
15 3921 1/4" JCK PCB MT VERT STER RT SWT
16 3663 SNAP IEC PWR SOC W/.250TAB FOR .060
17 3698 SPST ROKR SW QUIK 180" AC PWR
18 3450 & 3450NUT 1/4" ALL GOLD PC MNT JK SKT
19 3482 LOWPROFILE FUSEHOLDER 1/4" BUSSMANN
20 8638 PUSH SW BUTTON GREY
21 3923 XLR MALE PCB MT HORZ MTHOLE-V SNAP
22 3552 NYLON SPRING CLAMP
23 7025A OR 7025B 12AX7 DUAL TRIODE PREAMP TUBE
24 6L6B 6L6GB OUTPUT POWER TUBE
25 3428 8' 3/18 SJT AC LINE CORD REMOVABLE
*NOTE: Replacement grilles are 'Special-Order' and are only available while the model is in production.
‡ Grilles & Support replacements are for CURRENT models only.
8
9
4
3
1
2
16
19
5
15
12 13
18
17
REVERB CABLE AND UNIT
6/7
TUBES
23/24
10
20 21
11
14
6/7
AC Cord
25
Parts-Serv-YCV80-1v0.xls ftp.yorkville.com Speaker Enclosure

# Part# Description
Labeled Components
1 8260 TRAYNOR LOGO
2 TUBE10 10" 8R 30WPGM SPEAKER CELESTION (QTY: 4)
3 8461 TRIM CLIP (PLATED BLK ZINC)
4Z460 YCV80Q GRILLE* ‡ current model only!
5TFS-2B TRAYNOR DUAL FOOTSWCH 10' CORD
6 8522 72" RCA PREFAB CABLE STEREO
73537 ACC# 4EB3C1B LONG REVERB
88504 CORNER, 2 LEGS NOTCED LIP NICKEL PLATED
98522 RUBBER BUMPER WITH WASHER -SMALL-
10 8770 1/4-20 X 1 5/16 TRUSS PH MS JS5
11 8456 10.0" STRAP HANDLE, NICKEL COVERS
12 6397 JEWELED PILOT LAMP AMBER REG
13 8430 CHICKEN-BEAK KNOB
14 8633 ROUND PUSH BUTTON 1/4" BLACK
15 3921 1/4" JCK PCB MT VERT STER RT SWT
16 3663 SNAP IEC PWR SOC W/.250TAB FOR .060
17 3698 SPST ROKR SW QUIK 180" AC PWR
18 3450 & 3450NUT 1/4" ALL GOLD PC MNT JK SKT
19 3482 LOWPROFILE FUSEHOLDER 1/4" BUSSMANN
20 8638 PUSH SW BUTTON GREY
21 3923 XLR MALE PCB MT HORZ MTHOLE-V SNAP
22 3731 SPRING RETAINER FOR OUTPUT TUBE
23 7025A OR 7025B 12AX7 DUAL TRIODE PREAMP TUBE
24 6L6B 6L6GB OUTPUT POWER TUBE
25 3428 8' 3/18 SJT AC LINE CORD REMOVABLE
*NOTE: Replacement grilles are 'Special-Order' and are only available while the model is in production.
‡ Grilles & Support replacements are for CURRENT models only.
8
9
4
3
1
2
16 19
5
15
12
13
18
17
REVERB CABLE AND UNIT
6/7
TUBES
22/23/24
20
21
11
14
6/7
AC Cord
25 10
Parts-Serv-YCV80Q-1v0.xls ftp.yorkville.com Speaker Enclosure

Block Diagram for YCV80/YCV80Q
DE S IG N ED A ND MA NUF ACT URE D BY Y O RK V IL LE SO UND
+
-
+
-
+
-
+
-
Mono 1/4-inch
Input
Footswitch
Channel Select
Boost
Preamp
Channel
Select
Boost
V1:A
Preamp
V2:B
0 dB
Preamp
Expander
V2:A
Splitter
U2
B
U1
B
Reverb
Drive
Ch. 1
Volume
Ch. 2
Volume
K1
Channel
Select
K1
Reverb
Rtn
Master
Volume
Power
Amp
Reverb
Accutronics ©
4EBC1B
V3
Preamp
V1:B
V4
V5
V6
V7
Internal
Speaker Out
External
Speaker Out
12-inch Speakers
YS#7080
8-ohms
8-ohms
8-ohms
8-ohms
8-ohms
8-ohms
TUBE10
10-inch Speakers
YCV80 Speaker Configuration
YCV80Q Speaker Configuration
Pre-Amp
Out / Amp In
Scoop
Treble/Bass/Mid
EQ
Treble/Bass/Mid
EQ
D.I. Out
D.IHeadphone Out
Effects Return
Speaker
Emulator
Effects Send
+
+
-
+
-
+
-
+
-
+
-
MODEL TYPE: YS1034
BLOCK-DIAG-ycv80-1v40.ai
DISCONNECT POWER WHEN
REPLACING TUBES
DÉBRANCHÉ L’APPAREIL AVANT
DE REMPLACER LES LAMPES
5881
V7
POWER
5881
V6 5881 V4
5881
V5
PREAMP
12AX7
V2
12AX7
V1
SPLITTER
12AX7
V3

19 19
18 18
17 17
16 16
15 15
14 14
13 13
12 12
11 11
10 10
9 9
8 8
7 7
6 6
5 5
4 4
3 3
2 2
1 1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
N
N
O
O
P
P
Q
Q
R
R
S
S
T
T
U
U
V
V
W
W
X
X
Y
Y
Product
Filename:
Date:
PCB# ofSheet
Rev:
21
10.00
M602
M602-10V00sch.SCH2002
YCV80
Tue Sep 05, 2006
Guitar Amp
Product
Filename:
Date:
PCB# ofSheet
Rev:
21
10.00
M602
M602-10V00sch.SCH2002
YCV80
Tue Sep 05, 2006
Guitar Amp
GND
+250V
GND
+15V
-15V
+250V
+15V
D16
4007
4007
D18
D15
4007
4007
D17
GND
GND
-15V
+15V
GND
-15V
+15V
R75
1/4W
1M
.
R39
1/4W
47R
.
R38
1/4W
47R
.
R35
1/4W
4K7
.
GND
GND
GND
1/4W
10K
R160
.
GND
GND
-15V
GND
R48
1/4W
10K
.
R36
1/2W
2K
.
R69
1/4W
220K
.
R85
1/4W
27K
.
GND
NET00079
11
12W25:K
NET00124
9
12W25:I
NET00196
7
12W25:G
-15V
5
12W25:E
NET00089
3
12W25:C
NET00060
LINE
+250V
3682
W11GRN
FIL
+250V
+15V
HER508
D14
HER508
D13
GND
C65
250V100N
GND
NET00066
NET00165
NET00095
GND
-15V
NET00147
+15V
GND
4007
D10
GND
4007
D8
+250VRAW
D7
1N5240BRL10V0
0W5
GND
C40
100V10N
GND
GND
-ABIAS
A1SENS
A1SENS
R43
1/4W
MINI
100K
C29
100V220P
-BBIAS
-15V
GND
GND
B2SENS
B1SENS
C49
100V470P
-15V
-15V
+15V
3682
W14
PLATE
BRN
+15V
GND
NET00125
NET00026
10
12W25:J
12
12W25:L
8
12W25:H
NET00065
+15V
GND
4
12W25:D
6
12W25:F
1
12W25:A
{Function}
2
12W25:B
W41
#16
GRN
CHASSIS
CORD
DPST CE ONLY
S9
C81
275V
22N
W4
GND
#18
BLK
W39
#16
GRN
GND
W40
#16
GRN
GND
3682
W22WHT
LINE IN
R2
1/4W
1M
.
R27
1/4W
.
220K
R3
1/4W
1K54
.
C7
63V
1U
C21
250V47N
+250V
3682
W10
FIL
GRN
1/4W
220K
R22
.
R25
1/4W
MINI
100K
C3
100V47N
1/4W
2M2
R113
.
C2
100V47N
R140
1/8W
FLMP
100R0
R141
1/8W
FLMP
100R0
2X_TRIODE_HCT
V2:B
R10
1/4W
113K
.
470P 250V
C15
P4:A
4425
M
15A
500K
VOLUME
R13
1/4W
.
22K
C9
100V3N3
C78
25V
470U
OUTIN
U5
MC7915CT
6871
TO220
.
C76
25V
470U
OUTIN
U4
6872
MC7815CT
TO220
.
PENTODE
V4:B
PENTODE
V5:B
R12
1/4W
39K
.
1/4W
62K
R152
.
R19
1/4W
.
220K
R20
1/4W
.
220K
-15V
R143
1/2W
.
18R
C79
100V
100N
PENTODE
V7:B
3682
W6RED
HI.V
P7:A
4425
M
15A
500K
BASS
R16
1/4W
MINI
100K
R21
1/4W
1M
.
R4
1/4W
1K5
.
R142
1/2W
.
18R
D11
HER508
D12
HER508
GND
P9:A
4425
M
15A
500K
VOLUME
R26
1/4W
470K
.
1/4W
24K
R147
.
C85
400V1N
R146
1/4W
MINI
100K
R15
1/4W
MINI
100K
GND
R138
1/4W
36K
.
C62
450V
10U
R123
5.0W
390R
C70
450V
82U
2.0W
220K
R157
10MM
-15V
TO92
BC550C
Q23
5101
R28
1/4W
.
27K
U9:B
TL072
U9:A
TL072
5W30:E9
4W30:D9
7W30:G9
6W30:F9
9W30:I9
8W30:H9
1W30:A9
.
R137
1/4W
MINI
2K2
C67
250V
220N
C68
250V
220N
R129
1/4W
470R
.
63V
C90
150N
1/4W
22K
R151
.
C89
100V10N
R29
1/4W
.
47K
R116
1/4W
.
18K
R136
1/4W
1M
.
1N5262B
D9
0W5
51V0
C64
450V
10U
1N5262B
51V0
D21
0W5
R159
1/8W
FLMP
220R0
4
6
5
6880
U6:B
4N35
R127
1/4W
.
2M2
R132
1/8W
220R0
FLMP
Q22
5101
BC550C
TO92
2.0W
2K2
R30
.
TO92
MPSA06
Q3
5103
R44
1/4W
2K2
MINI
C27
400V1N
R32
1/4W
10K
.
R45
1/4W
.
1K
C41
100V82N
R78
1/4W
4K7
.
C39
100V10N
R77
1/4W
.
10K
R76
1/4W
1M
.
+15V
R135
1/4W
1K
.
R33
1/4W
.
10K
R42
1/4W
10K
.
4148
D19
R34
1/4W
.
10K
C26
100V100N
LD4
GRN
CH2
C53
63V330N
LD3
RED
OPERATE
R134
1/2W
470R
.
GND
1/4W
220R
R37
.
R40
1/4W
100R
.
LD2
YEL
CH1
C44
63V
220N
R81
1/4W
.
47K
R80
1/4W
.
47K
B1SENS
R68
1/4W
.
820R
-ABIAS
-BBIAS
C51
63V330N
R98
1/4W
1K5
.
4148
D3
3436
S5:B
BOOST
3522
DOWN UP
S3:B
NET00125
Q13
5104
TO92
MPSA56
R60
1.0W
FLMP
220R
SCREEN
R62
1.0W
10R
FLMP
R61
1.0W
10R
FLMP
B1SENS
R101
1/4W
.
4K7
R119
1/4W
.
24K
U1:A
TL072
C30
63V
330N
+15V
C45
63V
220N
B2SENS
R67
1/4W
.
820R
GND
R64
1.0W
10R
FLMP
R63
1.0W
10R
FLMP
+15V
R102
1/4W
.
4K7
GND
P13:A
4423
M
15A
20K
REVERB
GND
GND
P11
4497
M
B LIN
10K
EFF.SEND
R59
1.0W
FLMP
220R
3682
W13
B+
RED
-15V
+15V
R117
1/4W
.
4K7
U7:A
TL072
1/4W
100K
R155
MINI
R56
1/4W
.
10K
W33
#18
BLK
GND
W35
#18
BLK
GND
3682
W16GRN
SPKR
W34
#18
YEL
SPKR
W36
#18
YEL
SPKR
R107
1/4W
.
10K
U3:A
TL072
C57
100V220P
+15V
GND
1/4W
47R
R111
.
R154
1/4W
.
220R
R153
1/4W
.
220R
GND
R96
1/4W
100K
MINI
R92
1/4W
.
18K
R51
1/4W
.
1K
C36
100V47N
R57
1/4W
.
10K
W32
#18
BLK
GND
SRT J7
LINE_IN
-
--
1/4W
4K7
R95
.
GND
GND
NAmer 3A
FUSE
F1
CE T2A
1/4W
2M2
R114
.
C13
400V
1N
W3
GND
#18
BLK
1/4W
2K2
R5
MINI 63V
C19
330N
C14
400V
1N
R1
1/4W
.
2K21
1/4W
249K
R9
.
100V
C93
47P
W2
INPUT
#18
YEL
8
3
4
5
6
7
9
2
1
GRN
GRN
YEL
GRY
RED
GRY
RED
BLK
T1
BLK
1327(E)
R7
1/4W
113K
.
3682
W8YEL
C.T.
K2:A
K2:B
C1
400V1N
C20
63V
470N
R6
1/4W
1K5
.
C80
100V
100N
P8:A
4423
M
15A
20K
MID
3682
W5RED
HI.V
P6:A
4424
M
1B
100K
TREBLE
R8
1/4W
113K
.
100V
C83
6N8
1/4W
100K
R41
MINI
1/4W
4K7
R24
.
8
V+
4V-
U9:C
51V0
1N5262B D24
0W5
C66
450V
10U
63V
C71
10U
3W30:C9
2W30:B9
R149
1/4W
.
12K
R148
1/4W
.
8K2
D6
1N5262B
0W5
51V0
1
2
6880
U6:A
4N35
K2:C
C25
50V
22U
1/4W
10K
R156
.
BE
TO-92
C
BC550C
R99
1/4W
33K
.
LD5
YEL
STANDBY
LD1
RED
BOOST
CB
TO-126
MJE340
E
GND
R70
1/4W
220K
.
R65
1/4W
.
820R
R100
1/4W
36K
.
S5:A
3436
CH-SELECT
3522
DOWN UP
S2:B
IG
TO-220
O
78XX
R79
1/4W
39K
.
R84
1/4W
27K
.
R53
1.0W
FLMP
220R
C55
100V
3N3
-15V
GND
GND
C56
100V
680P
C59
16V
33U
R118
1/4W
.
10K
R120
1/4W
10K
.
C92
16V
33U
C38
100V100N
R54
1.0W
FLMP
220R
C60
16V33U
R110
1/4W
.
470R
8
V+
4V-
U3:C
R90
1/4W
.
4K7
D4
4148
4148
D5
GND
R55
1/4W
.
10K
R106
1/4W
.
10K
R93
1/4W
.
12K
C58
100V220P
R58
1/4W
.
10K
1/4W
33R
R91
.
8
V+
4V-
U7:C
SRT J6
---
LINE_IN
W17
#18
YEL
SPKR W18
#18
BLK
GND
6541
J10
REV RTN
P5:A
4425
M
15A
500K
GAIN
8
V+
4V-
U1:C
11 W26:K12
9W26:I12
7W26:G12
5W26:E12
3W26:C12
C82
250V 4N7
C22
250V47N
C6
100V470P
C11
50V470P
SCREEN
A2SENS
A1SENS
GND
B2SENS
C46
100V22N
R89
1/4W
.
24K
12 W26:L12
10 W26:J12
8W26:H12
3682
W9GRY
LO.V
6W26:F12
4W26:D12
2W26:B12
1W26:A12
{Function}
3682
W7GRY
LO.V
3682
W19
LINE
BLK
3682
W20
FROM SWCH
BLK
3682
W21BLK
LINE
C16
400V2N2
R23
1/4W
.
220K
C17
400V1N
2X_TRIODE_HCT
V1:A
R11
1/4W
47K
.
W38
#18
RED
To W37
R144
1/2W
.
18R
C74
25V
100U
C77
25V
470U
2X_TRIODE_HCT
.V2:C
C75
25V
470U
C73
25V
100U
2X_TRIODE_HCT
.
V3:C
C69
450V
82U
PENTODE
V6:B
C24
250V
4N7
C5
100V47N
C18
100V100N
R17
1/4W
.
1M
C12
250V10N
R14
1/4W
MINI
100K
C23
100V470P
1/4W
100K
R133
MINI
100V
C10
220P
C86
50V330P
4148
D20
R126
1/4W
.
1M
R145
1/4W
MINI
100K
100V
C84
3N3
9
9W29:I
8
9W29:H
5
9W29:E
4
9W29:D
7
9W29:G
6
9W29:F
1
9W29:A
R139
1/4W
36K
.
C63
450V
10U
1N5262B 0W5
51V0
D22
1N5262B
0W5
51V0
D23
R124
1/4W
.
100K
R121
1/2W
.
8K2
R131
1/4W
.
1M
R130
1.0W
FLMP
0R47
R150
1/4W
.
33K
C88
63V150N
50V
C28
22U
D2
4148
D1
4148
TO92
MPSA06
Q4
5103
K1:C
R115
1/4W
.
68K
S6:B
3522
Contour
WHT
TO92
MPSA56
Q14
5104
C43
400V22N
R74
1/4W
.
470R
R73
1/4W
.
220K
C52
63V330N
R103
1/4W
.
4K7
U8:B
TL072
C54
100V
68N
C61
16V33U
R47
1/4W
4K7
.
S3:A
3522
DOWN UP
BOOST
TO92
BC560C
Q15
5102
U1:B
TL072
R82
1/4W
.
47K
R83
1/4W
.
47K
W31
#18
YEL
SPKR
A2SENS
3682
W12BLU
PLATE
R109
1/4W
.
10K
R105
1/4W
MINI
620R
R104
1/4W
MINI
620R
U8:A
TL072
8
V+
4V-
U8:C
J8:A
3923
1/4W
47R
R112
.
Q17
5104
TO92
MPSA56
Q18
5103
TO92
MPSA06
C50
100V100N
R52
1/4W
.
10K
R97
1/4W
.
4K7
C35
100V220P
R86
1/4W
.
47K
R88
1/4W
.
24K
C34
100V220P
C33
16V33U
R49
1/4W
MINI
620R
R50
1/4W
MINI
620R
8
V+
4V-
U2:C
U2:A
TL072
C31
100V220P
C32
100V220P
{Value}
SCH_SPDT
S8
K1:A
P2:A
4425
M
15A
500K
BASS
P3:A
4423
M
15A
20K
MID
2X_TRIODE_HCT
V1:B
W1
INPUT
YEL
#18
2X_TRIODE_HCT
.V1:C
1/4W
82K
R158
MINI
C4
100V47N
R18
1/4W
MINI
100K
C8
50V
22U
BRIGHT
S1:B
3522
DOWN UP
S1:A
3522
DOWN UP
BRIGHT
S4:B
3522
SCOOP
WHT
2X_TRIODE_HCT
V2:A
S6:A
3522
Contour
WHT
63V
C72
100U
P10:A
4423
M
15A
20K
MASTER VOLUME
6873
Q20
TO126
MJE340
Hi-Reg
3
9W29:C
2
9W29:B
W37
#18
RED
To W38
R128
1/4W
.
680K
DS
G
Q19
6730
IRF830
TO220
HI.V REG
K1:B
R31
1/4W
10K
.
TO92
MPSA06
Q5
5103
TO92
BC550C
Q7
5101
TO92
BC550C
Q6
5101
S4:A
3522
SCOOP
WHT
"STYLE_P32" "STYLE_P29"
C42
400V22N
R71
1/4W
100K
MINI
R72
1/4W
82K
MINI
R66
1/4W
.
820R
C47
50V
22U C48
50V
22U
2X_TRIODE_HCT
V3:A
2X_TRIODE_HCT
V3:B
V4:A
PENTODE
V6:A
PENTODE
STANDBY
S7:B
3522
DOWN UP
R46
1/4W
4K7
.
TO92
BC560C
Q16
5102
ST R J11
GoldGold .
3522
DOWN UP
CH-SELECT
S2:A
BCE
MPSA56
MPSA06
TO-92 DSG
TO-220
IRF830
I
TO-220
OG
79XX
1
2
3
5
4
BLU
BLK
GRN
BRN
T2
RED
1327M 3682
W15BLK
SPKR
R108
1/4W
.
10K
U3:B
TL072
SRT J5
HEADPHONES/LINE.OUT
---
C91
16V33U
U7:B
TL072
U2:B
TL072
C37
25V100U
SRT J4
EFF.RETURN
---
6541
J9
RCA SNGL PCB MT HORZ K901
REV SND
P12
4497
M
B LIN
10K
EFF.RETURN
R87
1/4W
.
47K
3700_DRW
SRT J2
Gold Gold .
FT.SWITCH
P1:A
4424
M
1B
100K
TREBLE
SRT J3
EFF.SEND
-- -
RING
J1
9
10
11
12
13
MODEL(S):-
DATE VER# DESCRIPTION OF CHANGE#
1
2
3
4
5
6
7
8
.
8.10
.
JAN-06-2005
JAN/04/2005
.
YCV80
M602
..
D
D
D
APR-15-2005
MAY-17-2005 . 9.00
V
V
V
ADDED Z437 HEATSINK (GT)
PC#6793, PC#6795: FIX BREAKAWAY AND RTE NEAR S5
GT:FORCE UPDATE PADS REQUIRED TRACE CHANGES
R94 #4849 -> #4796 180K, REPLACED LEAD_SIZE PARTS
PC#7125:HG: RCA JACKS #3914 TO #6541
N
N
N
SHORTS
NOV 18 2002 7.00
8.00NOV-01-2004
MOVE D11 D12 D13 D14 TO ELIMINATE
PC#6728:TUBE LABELS UPDATED TO V1 TO V7 (GT)
PC#6789 D11,D12,D13,D14 1N5408 TO HER508 (HG)
PC#7091:HG: #3522 SWITCH HOLES 0.031" TO 0.040"
10.00
.
MAY/12/06
MAY/23/06
PENTODE
V5:A
PENTODE
V7:A
S7:A
3522
DOWN UP
STANDBY
KNOBPART#FUNCTIONREF
MODEL(S):-
{NEW}
N
N
N
N
N
N
N
N
N
N
N
N
K
K
K
4424
4425
4423
4425
4497
4497
4423
4423
4425
P
P
P
TREBLE
MID
GAIN
EFF.SEND
EFF.RETURN
PRESCENCE
REVERB
VOLUME
F
F
F
P1,P6
P2,P7
P3,P8
P5
P11
P12
P10
P13
P4,P9
R
R
R
BASS
8430
8430
8430
8430
N/A
N/A
8430
8430
8430
POTLIST
YCV80
9
10
11
12
13
MODEL(S):-
DATE VER# DESCRIPTION OF CHANGE#
1
2
3
4
5
6
7
8Add R160 10K from wiper to top of P13
Add R159 in series with Q20 output.
pc#6544 D6 30V ->33V, C19 150N ->330N, C20 330N->470N,
C15 1N->470P, C17 470P->1N, R23,R23 470K->220K
C39, C40 100N->10N.
.
2.10
.
.
.
.
.Move C93 47P to be across R2
Add C166 10N across R122
Value changes to tweak sound
Added Skrn outline to BE tube sockets
to line up, change shearing to routing
Remove cutouts for BE tube sockets, move ribbons cables
.
2.00
1.00
.
1.00p2
.
1.00p1
1.00p0
2001 09 20
2001 08 13
.
2001 07 05
.
2001 06 05 First Prototype2001 05 08
.
M602 PCB DATABASE HISTORY
.
2001 10 10
YCV80
Moved Send and Return pots out 0.075"
9
10
11
12
13
MODEL(S):-
DATE VER# DESCRIPTION OF CHANGE#
1
2
3
4
5
6
7
8
PC#6484 UPDATE SOLDERMASK FOR RCA JACKS AND TABS
C66 220N/250V TO 10u/450V
D25,D26 51V ZENER IN SERIES
PC#6475 REPLACE R125,R122,C87,Q21 WITH D6,D22,D23,D24
470P, R148 10K TO 8K2
3.00
2.30
.
2.20
JAN/17/02
NOV 30 2001
.
YCV80
.
PC#6456 C16 1N TO 2N2, C11 220p TO2001 10 17
FEB/26/02 4.00 PC#6512 D11,12,13,14 MR854 TO 1N5408
D V NEW PADS FOR TABS, RCA JACKS
Apr 10,2002 5.00 new pads and holes for 3921 jack
APR 29 02 . C15 MOVED ADD JUMPER X64
JUN 26 2002
JUL 05 2002
SEP 03, 2002
5.10
6.00
6.10
PC#6541 R124 100K TO 47K
PC#6544 MOVE TRACES RE SLD BRDGING
PC#6563 R124 47K TO 100K D25 TO A JMP

VCD
CLINCH
ORIGIN LONG AXIS
SHORT AXIS
INSERT
ORIGIN
10V00M602Pcb Mech
BlankSize - 18475x7950
TAB
NO
R
SOC
SOC
NO
R
SOC
IN
OUT
CLICK
10V00M602Top Assy
SEE LAYOUT DOCUMENTATION
V
T
R
V
T
R
V
T
R
V
T
R
V
T
R
V
T
R
V
T
R
GUIDE
ETCH
NC NOC
TL072
V
T
R
G1
G3
G2
SIG
RCA
TL072
GUIDE
ETCH
GUIDE
ETCH
RT
V
E B C
V
T
R
V
T
R
V
T
R
GUIDE
ETCH
NOL
NCL
NOR
NCR
CL CR
+
-
+
-
NOL
NCL
NOR
NCR
CL CR
NOL
NCL
NOR
NCR
CL CR
V
T
R
NOL
NCL
NOR
NCR
CL CR
NOL
NCL
NOR
NCR
CL CR
TL072
V
T
R
NOL
NCL
NOR
NCR
CL CR
GUIDE
ETCH
77
V
T
RV
T
R
V
T
R
GUIDE
ETCH
GUIDE
ETCH
G1
G3
G2
SIG
RCA
4N35
YCV80
V
T
R
V
T
R
RING
TIP-SW
TIP
SLEEVE
RING-SW
NC NOC
TL072
+
-
TL072
TL072
7 7
21
7
7 7
.
.
INPUT
GND
GND
PLATE
VOLUME
TREBLE
REV SND
VOLUME TREBLE
GNDGND
To W37
Hi-Reg
MID
FIL
REVERB
HI.V
GND
OPERATE
STANDBY
INPUT
GND
GND
BOOST
BOOST CH1
SCOOP
PLATE
CH-SELECT
HI.V REG .
BRIGHT
.
SPKR
Contour
HI.V
STANDBY
HEADPHONES/LINE.OUT FT.SWITCH
.
.
B+
GAIN
REV RTN
To W38
BASS
MID
SPKR
CHASSIS
FIL
BASS
SPKR
LO.V
C.T.
LINE
FROM SWCH
LINE
LINE IN
GND
MASTER VOLUME
CH2
SPKR SPKR LO.V
SPKR
EFF.SEND
EFF.RETURN
.
EFF.SEND
EFF.RETURN
.
LINE_IN
LINE_IN
Effects Insert
.
3674
4425 4424
6541
4425 4424
3674
4423 4423
5906
5907
6730 6872 6871
4425
6541
4425 4423 4425 4423
3984 3984 3984
5908
3638
3984
Z437
2M2
3N3
1N
24K
47K
4K7
27K
1.0W
10R
47K
220P
100K
82K
220P
18R
1/2W
.
1N 470N
47N
820R
1K5
10K 27K
113K
100K
4K7 1M
2K2
4007
10K
1N
47K
10K
100U
25V
100K
330P
47N
4148
18K 47N
330N
8K2
1/2W 68K
6N8 3N3
330N
220R0
100R0
100R0
4K7
680P
4148
4007
220K1M
2K21
47P
220K
24K
47N
4K7
10K
620R 820R
1N
220R
1.0W
1M
47N 1M
100K
4148
4K7
10N
18K
180K
22N 39K
100K
1M
0R47
1.0W
220R 220R
4K7
47R 47R 1K
47R
620R
10K
220P
10K
10K
330N
36K 4148 1K5
1N
4K7 4K7 10K10K
2K2
4007
113K
1M
10K
220K
2M2
100K
22N
4007
YEL
GRN
BLK
10K
220P
220P 820R 1.0W
10R
1U
113K 220K
RELAY 2C
10K
MPSA56
47K
100K
100N
330N
BC550C
2K2
15A
500K
47K
22U
50V
2N2
150N
4N7
1B
100K
100N
150N
220K
220K
1K5
220K
MPSA56
10R
1.0W
47N
100N
22U
50V
10R
1.0W
470P
27K
680K
10V0
51V0
220K 2.0W
MPSA06
15A
500K
MPSA06
2M2
1M
1B
100K
100N
100U
25V
100N
1M
22N
470P
BC550C
33U
16V
450V
10U
BLKBLK
1N
24K
100K
100K
4K7
33U
16V
100K
RED
TO126
MJE340
100K
15A
20K
3N3 100N
36K
36K
82N
15A
20K
470U
25V
BC550C
MPSA06
BLK
4007
470U
25V
1K
RED YEL
470R
1/2W
YEL
BLK
10K
GRN
220P
22K1K54
Alternate
RED
220R
1.0W
33U
16V
YEL
620R
220K
10N
39K
62K
Alternate
WHT
47K 47K
4148
1K
100U
25V
33R
100K
100K
12K 820R
470P
470K
Alternate
220N
250V
220R0
100U
63V
4148
100N
MPSA56
470R
4K7
IRF830
{Watts}
620R
MC7815CT
TO220
10K
2K
1/2W
Alternate
100K
10U
450V
220P
220P
10K
MC7915CT
TO220
YEL
10K
BC560C
Alternate
WHT
450V
10U
330N
33K
24K
2.0W
2K2
220R
68N
4148
4K7
47R
33U
16V
4K7
BC560C
HER508
HER508 10K 10K
22U
50V
4007
Alternate
249K
18R
1/2W
220N
8K2
22K
47K
82K
100R
51V0
51V0
51V0
10N
10N
33U
16V
.
220N
33K
12K
15A
500K
220N
250V
470R
BC550C
470P
RED
470R
47N
22U
50V 22U
50V
15A
500K
15A
20K
33U
16V
51V0
GRN
51V0
10U
63V
MPSA06
15A
500K
YEL
HER508
BLK
15A
20K
1.0W
220R
5.0W
390R
Val
RELAY 2C
220R
1.0W
Val
470P
GRN
450V
10U
YEL
22N 275V
4N7 250V
HER508
470U
25V
450V
82U
470U
25V
YEL
10K
Body
12AX7
10K
10K
1/2W
18R
Body
12AX7
BUTTON
10K
6in 12C
Val
450V
82U
Val
10V00
10V00
10V00
R114
C9
C13
R88
R81
X11
X21
X77
R24
R84
X23
R63
X39
R87
C31
R16
R158
C32 X24
R144
X73
C17
C20 C22
X59
R68
X33
R4
R52 R85 X84
X40 X27
R8
X82
R14
R97 R136
X30 X62
R137
D8
X78
X41
R118
C1
R11
R109
C74
R133
X47 C86
C2
X45
D20
R116
C3
C30
X46 R121
X75
R115
C83 C84
C52
R159
R141
R140 X69
X48 X66
X67
R78
C56
X51
D2
D17
X70
R20
R2
R1
C93
R19
R89
C21
R90
R56
R50
R66
C14 X9
R60
X8 R17
X26
C36 R21
R18
D5
R95 C12
R92
X83
R94
C46 R79
R71
R131
R130R154
R153
R35
R112
R111
X16
R45
X15
X7
X43
X65 X72
R38
R105
R107
C57
R106
R48
X57
C53
X14
X55
X54
R100 D19
R98 X20
C27
X31
R102
R101
R33R156 R44
D18
X74
R10
X63
X61
R76
R77
R73
X34
X10
R113
X60
R25
X56
X80
X42
X86
X44
W28
C43
D10
X37
W2
W39 W4
W44
R57
C34
C35
R65
X22
R61
X12
C7
R7
X1
R27
K2
X38
R55
U2
Q13
R80
W12
BLU
X85
R41 C18
C19
Q23
R5
P9
R86
C47
C16
C88
C24
P6
C38
X25
X64
C90
R22
R23
R6
J9
R70
Q14
R62
X81
X2
X3
C5
C50
C48
R64
C23
R28
R128
D7
D9
X29
R157
X79
Q4
P4
Q18
R127
X87
R75
P1
YCV80/Q
M602 3/3
C80
C73
C79
3610
W30
R126
C42
W27
C11
Q6
C60
X36
C63
W33
W35
C85
U9
R147
R146
X17
R15
R46
C61
R124
W38
Q20
R145
X68
P3
X49
X50
C55
C65
R138
R139
W10
GRN
C41
P13
C76
W6
RED
Q7
Q5
W18
D15
C75
R135
LD3
LD5
R134
W1
W3
R58
W40
X4
C10
R13R3
WHT
S3
LD1
R54
C33
LD2
X58
R49
R69
X18
C89
X13
R12
R152
S4
R82
R83
D4
R51
C37
R91
W14
BRN
R155
X5
X28
R96
R93
R67
C49
R26
WHT
S2
C67
R132
C72
D1
C26
Q17
R110
R117
Q19
R104
U4
R31
R36
WHT
S1
R43
X76
C66
C58
C29
R108
U5
W34
R34
Q15
S6
X32
C64
C51
R99
R119
R30
X53
R37
C54
D3
U8
R103
X19 R39
C92
R47
Q16
D13
D11
W5
RED
R160 R42
C28
D16
WHT
S7
R9
-
-
-
J5
R142
Gold
Gold
Gold
J2
X35
C44
R148
R151
R29
X6
X52
R72
R40
D21
D24
D23
C39
C40
X71
C91
C45
W13
RED
R150
R149
P5
J10
C68
R129 Q22
C15
W37
R74
C4
C8
C25
P7
P8
C59
D6
U6
W15
BLK
W41
D22
YCV80/Q
M602 2/3
C71
W11
GRN
3610
W29
Q3
P2
W17
W7
GRY
W8
YEL
D12
W19
BLK
W20
BLK
W21
BLK
W22
WHT
YCV80/Q
M602 1/3
W32
P10
R53
R123
V5V4
K1
R59
U7
V7
C6
LD4
C62
U1
U3
W16
GRN W36
C81
C82
D14
C77
C70
C78
W9
GRY
W31
R32
-
-
-
J3
-
-
-
J4
V1
BOT TOP
WIP
P11
BOT TOP
WIP
P12
R143
V2
J8
- - -
J6
-
-
-
J7
S5
R120
W23
3624
W25
3624
W26
V6 C69
Gold
Gold
Gold
J11
V3

Z437
TLO72 4N35
#8806
#8800
SEE LAYOUT DIAGRAM
#3796
#3850
Devices
PRODUCTION NOTES:
1. THERE IS A HEATSINK Z436 THAT IS ATTACHED
IN WIRING.
P
1
4
G2
8
5
NC
HH
3
K
6
G1
2
NC
7
G3
6L6GB
GOI
79XX
TO-220
ECB
MPSA56
TO-92
MPSA06
GSD
TO-220
IRF830
NO1
NC1
NO2
NC2
COM1 COM2
3700_DRW
"STYLE_P32"
IOG
78XX
TO-220
CEB
TO-92
BC550C
EBC
TO-126
MJE340
2G
2K
1 9
1K
1G
4
H
6
2
3
H
8
7
2P
5
HT
1P
12AX7A
"STYLE_P29"
13
12
11
10
9
DESCRIPTION OF CHANGE
5
4
3
2
1
# VER#DATE
MODEL(S):-
8
7
6
D
MAY/23/06
MAY/12/06 10.00
.
V
V
V
D
D
N
N
N
YCV80
7.00
.
8.10
.
JAN/04/2005
M602
SHORTS
NOV-01-2004 8.00
NOV 18 2002 MOVE D11 D12 D13 D14 TO ELIMINATE
PC#6728:TUBE LABELS UPDATED TO V1 TO V7 (GT)
PC#6789 D11,D12,D13,D14 1N5408 TO HER508 (HG)
JAN-06-2005 . ADDED Z437 HEATSINK (GT)
APR-15-2005 . PC#6793, PC#6795: FIX BREAKAWAY AND RTE NEAR S5
MAY-17-2005 9.00
.. R94 #4849 -> #4796 180K, REPLACED LEAD_SIZE PARTS
GT:FORCE UPDATE PADS REQUIRED TRACE CHANGES
PC#7125:HG: RCA JACKS #3914 TO #6541
PC#7091:HG: #3522 SWITCH HOLES 0.031" TO 0.040"
5
2
#
6
3
4
1
DATE
MODEL(S):-
VER# DESCRIPTION OF CHANGE
DVN
D
D
V
V
N
N
M602 DRILL HISTORY
YCV80
APR-15-2005 V12 PC#6793, PC#6795: FIX BREAKAWAY AND RTE NEAR S5
PC#7091 #3522 SWITCH HOLES FROM 0.031" TO 0.040"V14MAY/23/06
MAY/17/05 V13 SEE HISTORY TABLE FOR V9.00
4
1
6
5
3
#
2
MODEL(S):-
PC#
*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY
PENDING CHANGE
X
X
X
PC
PC
PC
PC
PC
PC
M602 PENDING CHANGES
YCV80
X
X
X
13
12
11
10
9
DESCRIPTION OF CHANGE
5
4
3
2
1
# VER#DATE
MODEL(S):-
8
7
6
2001 10 10 2.10
.
.
.
.
pc#6544 D6 30V ->33V, C19 150N ->330N, C20 330N->470N,
C15 1N->470P, C17 470P->1N, R23,R23 470K->220K
C39, C40 100N->10N
M602 PCB DATABASE HISTORY
2001 05 08
2001 06 05 1.00p0 1.00p1
..
First Prototype
Remove cutouts for BE tube sockets, move ribbons cables
to line up, change shearing to routing
YCV80
2001 07 05 1.00p2 Moved Send and Return pots out 0.075"
.. Added Skrn outline to BE tube sockets
2001 08 13 1.00 Value changes to tweak sound
Add C166 10N across R122
.
2001 09 20
.
2.00
.
.
..
Move C93 47P to be across R2
Add R160 10K from wiper to top of P13
Add R159 in series with Q20 output.
KNOBPART#FUNCTIONREF
MODEL(S):-
{NEW}
YCV80
POTLIST
N
N
N
N
N
N
N
N
N
N
N
N
K
K
K
P
P
P
F
F
F
R
R
R
BASS 4425P2,P7
P12 EFF.RETURN 4497
P11 EFF.SEND 4497
P5 GAIN 4425
MID 4423P3,P8
P10 PRESCENCE 4423
P13 REVERB 4423
P1,P6 TREBLE 4424
VOLUME 4425P4,P9
8430
8430
8430
8430
8430
8430
N/A
N/A
8430
13
12
11
10
9
DESCRIPTION OF CHANGE
5
4
3
2
1
# VER#DATE
MODEL(S):-
8
7
6JAN/17/02 3.00
YCV80
2.20
.
2.30
2001 10 17
.
NOV 30 2001
.
C66 220N/250V TO 10u/450V
D25,D26 51V ZENER IN SERIES
PC#6475 REPLACE R125,R122,C87,Q21 WITH D6,D22,D23,D24
470P, R148 10K TO 8K2
PC#6456 C16 1N TO 2N2, C11 220p TO
PC#6484 UPDATE SOLDERMASK FOR RCA JACKS AND TABS
FEB/26/02 4.00 PC#6512 D11,12,13,14 MR854 TO 1N5408
D V NEW PADS FOR TABS, RCA JACKS
Apr 10,2002 5.00 new pads and holes for 3921 jack
APR 29 02 . C15 MOVED ADD JUMPER X64
JUN 26 2002
JUL 05 2002
SEP 03, 2002
5.10
6.00
6.10
PC#6541 R124 100K TO 47K
PC#6544 MOVE TRACES RE SLD BRDGING
PC#6563 R124 47K TO 100K D25 TO A JMP

19 19
18 18
17 17
16 16
15 15
14 14
13 13
12 12
11 11
10 10
9 9
8 8
7 7
6 6
5 5
4 4
3 3
2 2
1 1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
N
N
O
O
P
P
Q
Q
R
R
S
S
T
T
U
U
V
V
W
W
X
X
Y
Y
Product
Filename:
Date:
PCB# ofSheet
Rev:
21
10.00
M602
M602Q-10V00sch.SCH2002
YCV80
Tue Sep 05, 2006
Guitar Amp
Product
Filename:
Date:
PCB# ofSheet
Rev:
21
10.00
M602
M602Q-10V00sch.SCH2002
YCV80
Tue Sep 05, 2006
Guitar Amp
GND
+250V
GND
+15V
-15V
+250V
+15V
D16
4007
4007
D18
D15
4007
4007
D17
GND
GND
-15V
+15V
GND
-15V
+15V
R75
1/4W
1M
.
R39
1/4W
47R
.
R38
1/4W
47R
.
R35
1/4W
4K7
.
GND
GND
GND
1/4W
10K
R160
.
GND
GND
-15V
GND
R48
1/4W
10K
.
R36
1/2W
2K
.
R69
1/4W
220K
.
R85
1/4W
27K
.
GND
NET00079
11
12W25:K
NET00124
9
12W25:I
NET00196
7
12W25:G
-15V
5
12W25:E
NET00089
3
12W25:C
NET00060
LINE
+250V
3682
W11GRN
FIL
+250V
+15V
HER508
D14
HER508
D13
GND
C65
250V100N
GND
NET00066
NET00165
NET00095
GND
-15V
NET00147
+15V
GND
4007
D10
GND
4007
D8
+250VRAW
D7
1N5240BRL10V0
0W5
GND
C40
100V10N
GND
GND
-ABIAS
A1SENS
A1SENS
R43
1/4W
MINI
100K
C29
100V220P
-BBIAS
-15V
GND
GND
B2SENS
B1SENS
C49
100V470P
-15V
-15V
+15V
3682
W14
PLATE
BRN
+15V
GND
NET00125
NET00026
10
12W25:J
12
12W25:L
8
12W25:H
NET00065
+15V
GND
4
12W25:D
6
12W25:F
1
12W25:A
{Function}
2
12W25:B
W41
#16
GRN
CHASSIS
CORD
DPST CE ONLY
S9
C81
275V
22N
W4
GND
#18
BLK
W39
#16
GRN
GND
W40
#16
GRN
GND
3682
W22WHT
LINE IN
R2
1/4W
1M
.
R27
1/4W
.
220K
R3
1/4W
1K54
.
C7
63V
1U
C21
250V47N
+250V
3682
W10
FIL
GRN
1/4W
220K
R22
.
R25
1/4W
MINI
100K
C3
100V47N
1/4W
2M2
R113
.
C2
100V47N
R140
1/8W
FLMP
100R0
R141
1/8W
FLMP
100R0
2X_TRIODE_HCT
V2:B
R10
1/4W
113K
.
2N2 400V C15
P4:A
4425
M
15A
500K
VOLUME
C9
100V6N8
R13
1/4W
.
100K
C78
25V
470U
OUTIN
U5
MC7915CT
6871
TO220
.
C76
25V
470U
OUTIN
U4
6872
MC7815CT
TO220
.
PENTODE
V4:B
PENTODE
V5:B
1/4W
62K
R152
.
R12
1/4W
47K
.
R19
1/4W
.
470K
R20
1/4W
.
470K
-15V
R143
1/2W
.
18R
C79
100V
100N
PENTODE
V7:B
3682
W6RED
HI.V
P7:A
4425
M
15A
500K
BASS
R16
1/4W
MINI
100K
R21
1/4W
1M
.
R4
1/4W
1K5
.
R142
1/2W
.
18R
D11
HER508
D12
HER508
GND
P9:A
4425
M
15A
500K
VOLUME
R26
1/4W
470K
.
1/4W
24K
R147
.
C85
400V1N
R146
1/4W
MINI
100K
R15
1/4W
MINI
100K
GND
R138
1/4W
36K
.
C62
450V
10U
R123
5.0W
390R
C70
450V
82U
2.0W
220K
R157
10MM
-15V
TO92
BC550C
Q23
5101
R28
1/4W
.
27K
U9:B
TL072
U9:A
TL072
5W30:E9
4W30:D9
7W30:G9
6W30:F9
9W30:I9
8W30:H9
1W30:A9
.
R137
1/4W
MINI
2K2
C67
250V
220N
C68
250V
220N
R129
1/4W
470R
.
63V
C90
150N
1/4W
22K
R151
.
C89
100V10N
R29
1/4W
.
47K
R116
1/4W
.
18K
R136
1/4W
1M
.
1N5262B
D9
0W5
51V0
C64
450V
10U
1N5262B
51V0
D21
0W5
R159
1/8W
FLMP
220R0
4
6
5
6880
U6:B
4N35
R127
1/4W
.
2M2
R132
1/8W
220R0
FLMP
Q22
5101
BC550C
TO92
2.0W
2K2
R30
.
TO92
MPSA06
Q3
5103
R44
1/4W
2K2
MINI
C27
400V1N
R32
1/4W
10K
.
R45
1/4W
.
1K
C41
100V82N
R78
1/4W
4K7
.
C39
100V10N
R77
1/4W
.
10K
R76
1/4W
1M
.
+15V
R135
1/4W
1K
.
R33
1/4W
.
10K
R42
1/4W
10K
.
4148
D19
R34
1/4W
.
10K
C26
100V100N
LD4
GRN
CH2
C53
63V330N
LD3
RED
OPERATE
R134
1/2W
470R
.
GND
1/4W
220R
R37
.
R40
1/4W
100R
.
LD2
YEL
CH1
C44
63V
220N
R81
1/4W
.
47K
R80
1/4W
.
47K
B1SENS
R68
1/4W
.
820R
-ABIAS
-BBIAS
C51
63V330N
R98
1/4W
1K5
.
4148
D3
3436
S5:B
BOOST
3522
DOWN UP
S3:B
NET00125
Q13
5104
TO92
MPSA56
R60
1.0W
FLMP
220R
SCREEN
R62
1.0W
10R
FLMP
R61
1.0W
10R
FLMP
B1SENS
R101
1/4W
.
4K7
R119
1/4W
.
24K
U1:A
TL072
C30
63V
330N
+15V
C45
63V
220N
B2SENS
R67
1/4W
.
820R
GND
R64
1.0W
10R
FLMP
R63
1.0W
10R
FLMP
+15V
R102
1/4W
.
4K7
GND
P13:A
4423
M
15A
20K
REVERB
GND
GND
P11
4497
M
B LIN
10K
EFF.SEND
R59
1.0W
FLMP
220R
3682
W13
B+
RED
-15V
+15V
R117
1/4W
.
4K7
U7:A
TL072
1/4W
100K
R155
MINI
R56
1/4W
.
10K
W33
#18
BLK
GND
W35
#18
BLK
GND
3682
W16GRN
SPKR
W34
#18
YEL
SPKR
W36
#18
YEL
SPKR
R107
1/4W
.
10K
U3:A
TL072
C57
100V220P
+15V
GND
1/4W
47R
R111
.
R154
1/4W
.
220R
R153
1/4W
.
220R
GND
R96
1/4W
100K
MINI
R92
1/4W
.
18K
R51
1/4W
.
1K
C36
100V47N
R57
1/4W
.
10K
W32
#18
BLK
GND
SRT J7
LINE_IN
-
--
1/4W
4K7
R95
.
GND
GND
NAmer 3A
FUSE
F1
CE T2A
1/4W
2M2
R114
.
C13
400V
1N
W3
GND
#18
BLK
1/4W
2K2
R5
MINI 63V
C19
330N
R1
1/4W
.
2K21
1/4W
249K
R9
.
100V
C93
47P
W2
INPUT
#18
YEL
C14
400V
2N2
8
3
4
5
6
7
9
2
1
GRN
GRN
YEL
GRY
RED
GRY
RED
BLK
T1
BLK
1327(E)
R7
1/4W
113K
.
3682
W8YEL
C.T.
K2:A
K2:B
C1
400V1N
C20
63V
470N
R6
1/4W
1K5
.
C80
100V
100N
P8:A
4423
M
15A
20K
MID
3682
W5RED
HI.V
P6:A
4424
M
1B
100K
TREBLE
R8
1/4W
113K
.
100V
C83
6N8
1/4W
100K
R41
MINI
1/4W
4K7
R24
.
8
V+
4V-
U9:C
51V0
1N5262B D24
0W5
C66
450V
10U
63V
C71
10U
3W30:C9
2W30:B9
R148
1/4W
.
8K2
R149
1/4W
.
15K
D6
1N5262B
0W5
51V0
1
2
6880
U6:A
4N35
K2:C
C25
50V
22U
1/4W
10K
R156
.
BE
TO-92
C
BC550C
R99
1/4W
33K
.
LD5
YEL
STANDBY
LD1
RED
BOOST
CB
TO-126
MJE340
E
GND
R70
1/4W
220K
.
R65
1/4W
.
820R
R100
1/4W
36K
.
S5:A
3436
CH-SELECT
3522
DOWN UP
S2:B
IG
TO-220
O
78XX
R79
1/4W
39K
.
R84
1/4W
27K
.
R53
1.0W
FLMP
220R
C55
250V
4N7
-15V
GND
GND
C59
16V
33U
R118
1/4W
.
10K
C56
400V
1N
R120
1/4W
10K
.
C92
16V
33U
C38
100V100N
R54
1.0W
FLMP
220R
C60
16V33U
R110
1/4W
.
470R
8
V+
4V-
U3:C
R90
1/4W
.
4K7
D4
4148
4148
D5
GND
R55
1/4W
.
10K
R106
1/4W
.
10K
R93
1/4W
.
12K
C58
100V220P
R58
1/4W
.
10K
1/4W
33R
R91
.
8
V+
4V-
U7:C
SRT J6
---
LINE_IN
W17
#18
YEL
SPKR W18
#18
BLK
GND
6541
J10
REV RTN
P5:A
4425
M
15A
500K
GAIN
8
V+
4V-
U1:C
11 W26:K12
9W26:I12
7W26:G12
5W26:E12
3W26:C12
C82
250V 4N7
C22
250V47N
C6
100V470P
C11
50V470P
SCREEN
A2SENS
A1SENS
GND
B2SENS
C46
100V22N
R89
1/4W
.
24K
12 W26:L12
10 W26:J12
8W26:H12
3682
W9GRY
LO.V
6W26:F12
4W26:D12
2W26:B12
1W26:A12
{Function}
3682
W7GRY
LO.V
3682
W19
LINE
BLK
3682
W20
FROM SWCH
BLK
3682
W21BLK
LINE
C16
400V2N2
R23
1/4W
.
220K
C17
400V1N
2X_TRIODE_HCT
V1:A
R11
1/4W
47K
.
W38
#18
RED
To W37
R144
1/2W
.
18R
C74
25V
100U
C77
25V
470U
2X_TRIODE_HCT
.V2:C
C75
25V
470U
C73
25V
100U
2X_TRIODE_HCT
.
V3:C
C69
450V
82U
PENTODE
V6:B
C24
250V
4N7
C5
100V47N
C18
100V100N
R17
1/4W
.
1M
C12
250V10N
R14
1/4W
MINI
100K
C23
100V470P
1/4W
100K
R133
MINI
C86
50V330P
4148
D20
100V
C10
6N8
R126
1/4W
.
1M
R145
1/4W
MINI
100K
100V
C84
3N3
9
9W29:I
8
9W29:H
5
9W29:E
4
9W29:D
7
9W29:G
6
9W29:F
1
9W29:A
R139
1/4W
36K
.
C63
450V
10U
1N5262B 0W5
51V0
D22
1N5262B
0W5
51V0
D23
R124
1/4W
.
100K
R121
1/2W
.
8K2
R131
1/4W
.
1M
R130
1.0W
FLMP
0R47
C88
63V150N
50V
C28
22U
R150
1/4W
.
27K
D2
4148
D1
4148
TO92
MPSA06
Q4
5103
K1:C
S6:B
3522
Contour
WHT
R115
1/4W
.
91K
TO92
MPSA56
Q14
5104
C43
400V22N
R74
1/4W
.
470R
R73
1/4W
.
220K
C52
63V330N
R103
1/4W
.
4K7
U8:B
TL072
C54
63V
100N
C61
16V33U
R47
1/4W
4K7
.
S3:A
3522
DOWN UP
BOOST
TO92
BC560C
Q15
5102
U1:B
TL072
R82
1/4W
.
47K
R83
1/4W
.
47K
W31
#18
YEL
SPKR
A2SENS
3682
W12BLU
PLATE
R109
1/4W
.
10K
R105
1/4W
MINI
620R
R104
1/4W
MINI
620R
U8:A
TL072
8
V+
4V-
U8:C
J8:A
3923
1/4W
47R
R112
.
Q17
5104
TO92
MPSA56
Q18
5103
TO92
MPSA06
C50
100V100N
R52
1/4W
.
10K
R97
1/4W
.
4K7
C35
100V220P
R86
1/4W
.
47K
R88
1/4W
.
24K
C34
100V220P
C33
16V33U
R49
1/4W
MINI
620R
R50
1/4W
MINI
620R
8
V+
4V-
U2:C
U2:A
TL072
C31
100V220P
C32
100V220P
{Value}
SCH_SPDT
S8
K1:A
P2:A
4425
M
15A
500K
BASS
P3:A
4423
M
15A
20K
MID
2X_TRIODE_HCT
V1:B
W1
INPUT
YEL
#18
2X_TRIODE_HCT
.V1:C
1/4W
82K
R158
MINI
C4
100V47N
R18
1/4W
MINI
100K
C8
50V
22U
BRIGHT
S1:B
3522
DOWN UP
S1:A
3522
DOWN UP
BRIGHT
S4:B
3522
SCOOP
WHT
2X_TRIODE_HCT
V2:A
S6:A
3522
Contour
WHT
63V
C72
100U
P10:A
4423
M
15A
20K
MASTER VOLUME
6873
Q20
TO126
MJE340
Hi-Reg
3
9W29:C
2
9W29:B
W37
#18
RED
To W38
R128
1/4W
.
680K
DS
G
Q19
6730
IRF830
TO220
HI.V REG
K1:B
R31
1/4W
10K
.
TO92
MPSA06
Q5
5103
TO92
BC550C
Q7
5101
TO92
BC550C
Q6
5101
S4:A
3522
SCOOP
WHT
"STYLE_P32" "STYLE_P29"
C42
400V22N
R71
1/4W
100K
MINI
R72
1/4W
82K
MINI
R66
1/4W
.
820R
C47
50V
22U C48
50V
22U
2X_TRIODE_HCT
V3:A
2X_TRIODE_HCT
V3:B
V4:A
PENTODE
V6:A
PENTODE
STANDBY
S7:B
3522
DOWN UP
R46
1/4W
4K7
.
TO92
BC560C
Q16
5102
ST R J11
GoldGold .
3522
DOWN UP
CH-SELECT
S2:A
BCE
MPSA56
MPSA06
TO-92 DSG
TO-220
IRF830
I
TO-220
OG
79XX
1
2
3
5
4
BLU
BLK
GRN
BRN
T2
RED
1327M 3682
W15BLK
SPKR
R108
1/4W
.
10K
U3:B
TL072
SRT J5
HEADPHONES/LINE.OUT
---
C91
16V33U
U7:B
TL072
U2:B
TL072
C37
25V100U
SRT J4
EFF.RETURN
---
6541
J9
RCA SNGL PCB MT HORZ K901
REV SND
P12
4497
M
B LIN
10K
EFF.RETURN
R87
1/4W
.
47K
3700_DRW
SRT J2
Gold Gold .
FT.SWITCH
P1:A
4424
M
1B
100K
TREBLE
SRT J3
EFF.SEND
-- -
RING
J1
PENTODE
V5:A
PENTODE
V7:A
9
10
11
12
13
MODEL(S):-
DATE VER# DESCRIPTION OF CHANGE#
1
2
3
4
5
6
7
8
.
8.10
.
JAN-06-2005
JAN/04/2005
.
M602
..
D
D
D
APR-15-2005
MAY-17-2005 . 9.00
V
V
V
ADDED Z437 HEATSINK (GT)
PC#6793, PC#6795: FIX BREAKAWAY AND RTE NEAR S5
GT:FORCE UPDATE PADS REQUIRED TRACE CHANGES
R94 #4849 -> #4796 180K, REPLACED LEAD_SIZE PARTS
PC#7125:HG: RCA JACKS #3914 TO #6541
N
N
N
SHORTS
NOV 18 2002 7.00
8.00NOV-01-2004
MOVE D11 D12 D13 D14 TO ELIMINATE
PC#6728:TUBE LABELS UPDATED TO V1 TO V7 (GT)
PC#6789 D11,D12,D13,D14 1N5408 TO HER508 (HG)
PC#7091:HG: #3522 SWITCH HOLES 0.031" TO 0.040"
10.00
.
MAY/12/06
MAY/23/06
YCV80Q
S7:A
3522
DOWN UP
STANDBY
KNOBPART#FUNCTIONREF
MODEL(S):-
{NEW}
N
N
N
N
N
N
N
N
N
N
N
N
K
K
K
4424
4425
4423
4425
4497
4497
4423
4423
4425
P
P
P
TREBLE
MID
GAIN
EFF.SEND
EFF.RETURN
PRESCENCE
REVERB
VOLUME
F
F
F
P1,P6
P2,P7
P3,P8
P5
P11
P12
P10
P13
P4,P9
R
R
R
BASS
8430
8430
8430
8430
N/A
N/A
8430
8430
8430
POTLIST
YCV80Q
9
10
11
12
13
MODEL(S):-
DATE VER# DESCRIPTION OF CHANGE#
1
2
3
4
5
6
7
8Add R160 10K from wiper to top of P13
Add R159 in series with Q20 output.
pc#6544 D6 30V ->33V, C19 150N ->330N, C20 330N->470N,
C15 1N->470P, C17 470P->1N, R23,R23 470K->220K
C39, C40 100N->10N.
.
2.10
.
.
.
.
.Move C93 47P to be across R2
Add C166 10N across R122
Value changes to tweak sound
Added Skrn outline to BE tube sockets
to line up, change shearing to routing
Remove cutouts for BE tube sockets, move ribbons cables
.
2.00
1.00
.
1.00p2
.
1.00p1
1.00p0
2001 09 20
2001 08 13
.
2001 07 05
.
2001 06 05 First Prototype2001 05 08
.
M602 PCB DATABASE HISTORY
.
2001 10 10
Moved Send and Return pots out 0.075"
YCV80Q
9
10
11
12
13
MODEL(S):-
DATE VER# DESCRIPTION OF CHANGE#
1
2
3
4
5
6
7
8
PC#6484 UPDATE SOLDERMASK FOR RCA JACKS AND TABS
C66 220N/250V TO 10u/450V
D25,D26 51V ZENER IN SERIES
PC#6475 REPLACE R125,R122,C87,Q21 WITH D6,D22,D23,D24
470P, R148 10K TO 8K2
3.00
2.30
.
2.20
JAN/17/02
NOV 30 2001
.
.
PC#6456 C16 1N TO 2N2, C11 220p TO2001 10 17
FEB/26/02 4.00 PC#6512 D11,12,13,14 MR854 TO 1N5408
D V NEW PADS FOR TABS, RCA JACKS
Apr 10,2002 5.00 new pads and holes for 3921 jack
APR 29 02 . C15 MOVED ADD JUMPER X64
JUN 26 2002
JUL 05 2002
SEP 03, 2002
5.10
6.00
6.10
PC#6541 R124 100K TO 47K
PC#6544 MOVE TRACES RE SLD BRDGING
PC#6563 R124 47K TO 100K D25 TO A JMP
YCV80Q

VCD
CLINCH
ORIGIN LONG AXIS
SHORT AXIS
INSERT
ORIGIN
M60210V00Pcb Mech
BlankSize - 18475x7950
TAB
NO
R
SOC
SOC
NO
R
SOC
IN
OUT
CLICK
M60210V00Top Assy
SEE LAYOUT DOCUMENTATION
V
T
R
V
T
R
V
T
R
V
T
R
V
T
R
V
T
R
V
T
R
GUIDE
ETCH
NC NOC
TL072
V
T
R
G1
G3
G2
SIG
RCA
TL072
GUIDE
ETCH
GUIDE
ETCH
RT
V
E B C
V
T
R
V
T
R
V
T
R
GUIDE
ETCH
NOL
NCL
NOR
NCR
CL CR
+
-
+
-
NOL
NCL
NOR
NCR
CL CR
NOL
NCL
NOR
NCR
CL CR
V
T
R
NOL
NCL
NOR
NCR
CL CR
NOL
NCL
NOR
NCR
CL CR
TL072
V
T
R
NOL
NCL
NOR
NCR
CL CR
GUIDE
ETCH
77
V
T
RV
T
R
V
T
R
GUIDE
ETCH
GUIDE
ETCH
G1
G3
G2
SIG
RCA
4N35
YCV80Q
V
T
R
V
T
R
RING
TIP-SW
TIP
SLEEVE
RING-SW
NC NOC
TL072
+
-
TL072
TL072
7 7
21
7
7 7
.
.
INPUT
GND
GND
PLATE
VOLUME
TREBLE
REV SND
VOLUME TREBLE
GNDGND
To W37
Hi-Reg
MID
FIL
REVERB
HI.V
GND
OPERATE
STANDBY
INPUT
GND
GND
BOOST
BOOST CH1
SCOOP
PLATE
CH-SELECT
HI.V REG .
BRIGHT
.
SPKR
Contour
HI.V
STANDBY
HEADPHONES/LINE.OUT FT.SWITCH
.
.
B+
GAIN
REV RTN
To W38
BASS
MID
SPKR
CHASSIS
FIL
BASS
SPKR
LO.V
C.T.
LINE
FROM SWCH
LINE
LINE IN
GND
MASTER VOLUME
CH2
SPKR SPKR LO.V
SPKR
EFF.SEND
EFF.RETURN
.
EFF.SEND
EFF.RETURN
.
LINE_IN
LINE_IN
Effects Insert
.
3674
4425 4424
6541
4425 4424
3674
4423 4423
5906
5907
6730 6872 6871
4425
6541
4425 4423 4425 4423
3984 3984 3984
5908
3638
3984
Z437
2M2
1N 6N8
24K
47K
4K7
27K
1.0W
10R
47K
220P
100K
82K
220P
18R
1/2W
.
1N 470N
47N
820R
1K5
10K 27K
113K
100K
4K7 1M
2K2
4007
10K
1N
47K
10K
100U
25V
100K
330P
47N
4148
18K 47N
330N
8K2
1/2W 91K
6N8 3N3
330N
220R0
100R0
100R0
4K7
1N
4148
4007
1M
2K21
470K
47P
470K
24K
47N
4K7
10K
620R 820R
2N2
220R
1.0W
1M
47N 1M
100K
4148
4K7
10N
18K
180K
22N 39K
100K
1M
0R47
1.0W
220R 220R
4K7
47R 47R 1K
47R
620R
10K
220P
10K
10K
330N
36K 4148 1K5
1N
4K7 4K7 10K10K
2K2
4007
113K
1M
10K
220K
2M2
100K
22N
4007
YEL
GRN
BLK
10K
220P
220P 820R 1.0W
10R
1U
113K 220K
RELAY 2C
10K
MPSA56
47K
100K
100N
330N
BC550C
2K2
15A
500K
47K
22U
50V
2N2
150N
4N7
1B
100K
100N
150N
220K
220K
1K5
220K
MPSA56
10R
1.0W
47N
100N
22U
50V
10R
1.0W
470P
27K
680K
10V0
51V0
220K 2.0W
MPSA06
15A
500K
MPSA06
2M2
1M
1B
100K
100N
100U
25V
100N
1M
22N
470P
BC550C
33U
16V
450V
10U
BLKBLK
1N
24K
100K
100K
4K7
33U
16V
100K
RED
TO126
MJE340
100K
15A
20K
4N7 100N
36K
36K
82N
15A
20K
470U
25V
BC550C
MPSA06
BLK
4007
470U
25V
1K
RED YEL
470R
1/2W
YEL
BLK
10K
GRN
1K54
Alternate
RED
6N8
100K
220R
1.0W
33U
16V
YEL
620R
220K
10N
62K
Alternate
WHT
47K
47K 47K
4148
1K
100U
25V
33R
100K
100K
12K 820R
470P
470K
Alternate
220N
250V
220R0
100U
63V
4148
100N
MPSA56
470R
4K7
IRF830
{Watts}
620R
MC7815CT
TO220
10K
2K
1/2W
Alternate
100K
10U
450V
220P
220P
10K
MC7915CT
TO220
YEL
10K
BC560C
Alternate
WHT
450V
10U
330N
33K
24K
2.0W
2K2
220R
4148
4K7
100N
47R
33U
16V
4K7
BC560C
HER508
HER508 10K 10K
22U
50V
4007
Alternate
249K
18R
1/2W
220N
8K2
22K
47K
82K
100R
51V0
51V0
51V0
10N
10N
33U
16V
.
220N
27K
15A
500K
15K
220N
250V
470R
BC550C
RED
2N2
470R
47N
22U
50V 22U
50V
15A
500K
15A
20K
33U
16V
51V0
GRN
51V0
10U
63V
MPSA06
15A
500K
YEL
HER508
BLK
15A
20K
1.0W
220R
5.0W
390R
Val
RELAY 2C
220R
1.0W
Val
470P
GRN
450V
10U
YEL
22N 275V
4N7 250V
HER508
470U
25V
450V
82U
470U
25V
YEL
10K
Body
12AX7
10K
10K
1/2W
18R
Body
12AX7
BUTTON
10K
6in 12C
Val
450V
82U
Val
10V00
10V00
10V00
R114
C13
C9
R88
R81
X11
X21
X77
R24
R84
X23
R63
X39
R87
C31
R16
R158
C32 X24
R144
X73
C17
C20 C22
X59
R68
X33
R4
R52 R85 X84
X40 X27
R8
X82
R14
R97 R136
X30 X62
R137
D8
X78
X41
R118
C1
R11
R109
C74
R133
X47 C86
C2
X45
D20
R116
C3
C30
X46 R121
X75
R115
C83 C84
C52
R159
R141
R140 X69
X48 X66
X67
R78
C56
X51
D2
D17
X70
R2
R1 R20
C93
R19
R89
C21
R90
R56
R50
R66
C14 X9
R60
X8 R17
X26
C36 R21
R18
D5
R95 C12
R92
X83
R94
C46 R79
R71
R131
R130R154
R153
R35
R112
R111
X16
R45
X15
X7
X43
X65 X72
R38
R105
R107
C57
R106
R48
X57
C53
X14
X55
X54
R100 D19
R98 X20
C27
X31
R102
R101
R33R156 R44
D18
X74
R10
X63
X61
R76
R77
R73
X34
X10
R113
X60
R25
X56
X80
X42
X86
X44
W28
C43
D10
X37
W2
W39 W4
W44
R57
C34
C35
R65
X22
R61
X12
C7
R7
X1
R27
K2
X38
R55
U2
Q13
R80
W12
BLU
X85
R41 C18
C19
Q23
R5
P9
R86
C47
C16
C88
C24
P6
C38
X25
X64
C90
R22
R23
R6
J9
R70
Q14
R62
X81
X2
X3
C5
C50
C48
R64
C23
R28
R128
D7
D9
X29
R157
X79
Q4
P4
Q18
R127
X87
R75
P1
YCV80/Q
M602 3/3
C80
C73
C79
3610
W30
R126
C42
W27
C11
Q6
C60
X36
C63
W33
W35
C85
U9
R147
R146
X17
R15
R46
C61
R124
W38
Q20
R145
X68
P3
X49
X50
C55
C65
R138
R139
W10
GRN
C41
P13
C76
W6
RED
Q7
Q5
W18
D15
C75
R135
LD3
LD5
R134
W1
W3
R58
W40
X4
R3
WHT
S3
LD1
C10
R13
R54
C33
LD2
X58
R49
R69
X18
C89
X13
R152
S4
R12
R82
R83
D4
R51
C37
R91
W14
BRN
R155
X5
X28
R96
R93
R67
C49
R26
WHT
S2
C67
R132
C72
D1
C26
Q17
R110
R117
Q19
R104
U4
R31
R36
WHT
S1
R43
X76
C66
C58
C29
R108
U5
W34
R34
Q15
S6
X32
C64
C51
R99
R119
R30
X53
R37
D3
U8
R103
C54
X19 R39
C92
R47
Q16
D13
D11
W5
RED
R160 R42
C28
D16
WHT
S7
R9
-
-
-
J5
R142
Gold
Gold
Gold
J2
X35
C44
R148
R151
R29
X6
X52
R72
R40
D21
D24
D23
C39
C40
X71
C91
C45
W13
RED
R150
P5
R149
J10
C68
R129 Q22
W37
C15
R74
C4
C8
C25
P7
P8
C59
D6
U6
W15
BLK
W41
D22
YCV80/Q
M602 2/3
C71
W11
GRN
3610
W29
Q3
P2
W17
W7
GRY
W8
YEL
D12
W19
BLK
W20
BLK
W21
BLK
W22
WHT
YCV80/Q
M602 1/3
W32
P10
R53
R123
V5V4
K1
R59
U7
V7
C6
LD4
C62
U1
U3
W16
GRN W36
C81
C82
D14
C77
C70
C78
W9
GRY
W31
R32
-
-
-
J3
-
-
-
J4
V1
BOT TOP
WIP
P11
BOT TOP
WIP
P12
R143
V2
J8
- - -
J6
-
-
-
J7
S5
R120
W23
3624
W25
3624
W26
V6 C69
Gold
Gold
Gold
J11
V3

Z437
TLO72 4N35
#8806
#8800
SEE LAYOUT DIAGRAM
#3796
#3850
Devices
PRODUCTION NOTES:
1. THERE IS A HEATSINK Z436 THAT IS ATTACHED
IN WIRING.
P
1
4
G2
8
5
NC
HH
3
K
6
G1
2
NC
7
G3
6L6GB
GOI
79XX
TO-220
ECB
MPSA56
TO-92
MPSA06
GSD
TO-220
IRF830
NO1
NC1
NO2
NC2
COM1 COM2
3700_DRW
"STYLE_P32"
IOG
78XX
TO-220
CEB
TO-92
BC550C
EBC
TO-126
MJE340
2G
2K
1 9
1K
1G
4
H
6
2
3
H
8
7
2P
5
HT
1P
12AX7A
"STYLE_P29"
13
12
11
10
9
DESCRIPTION OF CHANGE
5
4
3
2
1
# VER#DATE
MODEL(S):-
8
7
6
D
MAY/23/06
MAY/12/06 10.00
.
V
V
V
D
D
N
N
N
YCV80Q
7.00
.
8.10
.
JAN/04/2005
M602
SHORTS
NOV-01-2004 8.00
NOV 18 2002 MOVE D11 D12 D13 D14 TO ELIMINATE
PC#6728:TUBE LABELS UPDATED TO V1 TO V7 (GT)
PC#6789 D11,D12,D13,D14 1N5408 TO HER508 (HG)
JAN-06-2005 . ADDED Z437 HEATSINK (GT)
APR-15-2005 . PC#6793, PC#6795: FIX BREAKAWAY AND RTE NEAR S5
MAY-17-2005 9.00
.. R94 #4849 -> #4796 180K, REPLACED LEAD_SIZE PARTS
GT:FORCE UPDATE PADS REQUIRED TRACE CHANGES
PC#7125:HG: RCA JACKS #3914 TO #6541
PC#7091:HG: #3522 SWITCH HOLES 0.031" TO 0.040"
13
12
11
10
9
DESCRIPTION OF CHANGE
5
4
3
2
1
# VER#DATE
MODEL(S):-
8
7
6
2001 10 10 2.10
.
.
.
.
pc#6544 D6 30V ->33V, C19 150N ->330N, C20 330N->470N,
C15 1N->470P, C17 470P->1N, R23,R23 470K->220K
C39, C40 100N->10N
M602 PCB DATABASE HISTORY
2001 05 08
2001 06 05 1.00p0 1.00p1
..
First Prototype
Remove cutouts for BE tube sockets, move ribbons cables
to line up, change shearing to routing
YCV80Q
2001 07 05 1.00p2 Moved Send and Return pots out 0.075"
.. Added Skrn outline to BE tube sockets
2001 08 13 1.00 Value changes to tweak sound
Add C166 10N across R122
.
2001 09 20
.
2.00
.
.
..
Move C93 47P to be across R2
Add R160 10K from wiper to top of P13
Add R159 in series with Q20 output.
5
2
#
6
3
4
1
DATE
MODEL(S):-
VER# DESCRIPTION OF CHANGE
DVN
D
D
V
V
N
N
M602 DRILL HISTORY
APR-15-2005 V12 PC#6793, PC#6795: FIX BREAKAWAY AND RTE NEAR S5
PC#7091 #3522 SWITCH HOLES FROM 0.031" TO 0.040"V14MAY/23/06
MAY/17/05 V13 SEE HISTORY TABLE FOR V9.00
YCV80Q
4
1
6
5
3
#
2
MODEL(S):-
PC#
*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY
PENDING CHANGE
X
X
X
PC
PC
PC
PC
PC
PC
M602 PENDING CHANGES
X
X
X
YCV80Q
13
12
11
10
9
DESCRIPTION OF CHANGE
5
4
3
2
1
# VER#DATE
MODEL(S):-
8
7
6JAN/17/02 3.00
YCV80Q
2.20
.
2.30
2001 10 17
.
NOV 30 2001
.
C66 220N/250V TO 10u/450V
D25,D26 51V ZENER IN SERIES
PC#6475 REPLACE R125,R122,C87,Q21 WITH D6,D22,D23,D24
470P, R148 10K TO 8K2
PC#6456 C16 1N TO 2N2, C11 220p TO
PC#6484 UPDATE SOLDERMASK FOR RCA JACKS AND TABS
FEB/26/02 4.00 PC#6512 D11,12,13,14 MR854 TO 1N5408
D V NEW PADS FOR TABS, RCA JACKS
Apr 10,2002 5.00 new pads and holes for 3921 jack
APR 29 02 . C15 MOVED ADD JUMPER X64
JUN 26 2002
JUL 05 2002
SEP 03, 2002
5.10
6.00
6.10
PC#6541 R124 100K TO 47K
PC#6544 MOVE TRACES RE SLD BRDGING
PC#6563 R124 47K TO 100K D25 TO A JMP
KNOBPART#FUNCTIONREF
MODEL(S):-
{NEW}
YCV80Q
POTLIST
N
N
N
N
N
N
N
N
N
N
N
N
K
K
K
P
P
P
F
F
F
R
R
R
BASS 4425P2,P7
P12 EFF.RETURN 4497
P11 EFF.SEND 4497
P5 GAIN 4425
MID 4423P3,P8
P10 PRESCENCE 4423
P13 REVERB 4423
P1,P6 TREBLE 4424
VOLUME 4425P4,P9
8430
8430
8430
8430
8430
8430
N/A
N/A
8430

OU T PU T -T U BE
6L 6B
OU T P UT -T U BE
6L 6B
OU T PU T -T U BE
6L 6B
OU T PU T -T U BE
6L 6B
G R E E N
B L UER E DB R O W N
B L AC K
G R E Y
G R E Y
R E D
R E D
G R E E N
G R E E N
B L AC K WH IT E
F
O U TP U T
G R N
B L K
F
Y E LLO W
B L AC K
R E D
Y C V 80 AC W IR E S
O C T /2001
May /2003
G R E Y
G R E E N
G R E E N
R E D
B LA C K
From Pwr. Sup.-8"
From Input
Section-26"

OU T PU T -T U BE
6L 6B
OU T P UT -T U BE
6L 6B
OU T PU T -T U BE
6L 6B
OU T PU T -T U BE
6L 6B
G R E E N
B L UER E DB R O W N
B L AC K
G R E Y
G R E Y
R E D
R E D
G R E E N
G R E E N
B L AC K WH IT E
F
O U TP U T
G R N
B L K
F
Y E LLO W
B L AC K
R E D
Y C V80 AC C E WIR E S
O C T /2001
May /2003
G R E Y
G R E E N
G R E E N
R E D
B LA C K
1327E
240V
From Pwr. Sup.
8"
From Inp.
Section
26"

SERVICE BULLETIN: FEB. 20 / 2003
MODEL : YCV80
RE: POTENTIAL FAILURES OF POWER SUPPLY DIODES.
We have experienced an unusual number of failures amongst the rectifier
diodes supplied by a specific manufacturer. To this point in time ,we have
been able to determine that we have received a certain percentage of diodes
that have a weakness which surfaces after the unit has been run several
times. The symptoms described by customers will be “blowing fuses” or
“will not start up”. In either case it is likely that you have one of these bad
diodes.
When you experience this condition, we recommend that you replace all 4
rectifiers with industry standard part # 1N4007, or you can order 4007’s
from us as part # 6438. We recommend changing out all 4 rectifiers in order
to be 100% certain of no possible repeat failures.