Yamaha AES420 User manual

Copyright (c) Yamaha Corporation. All rights reserved. PDF-K28 ’04.04
AES420
SERVICE MANUAL
EG 011730
ELECTRIC GUITAR
HAMAMATSU, JAPAN
CONTENTS
OVERALL ASSEMBLY ............................................................. 2
CIRCUIT DIAGRAM.................................................................. 4
SPECIFICATIONS ..................................................................... 4
WIRING..................................................................................... 4
WARNING : CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/
electronic and/or plastic (Where applicable) components may also contain traces of chemicals
found by the California Health and Welfare Agency (and possibly other entities) to cause cancer
and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS INYOUR
MOUTH FOR ANY REASON WHAT SO EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not
inhale solder fumes or expose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product,
wash your hands before handling food.

AES420
2
E08
E15
E16
E21
D01
E20
F05F04
F07F06
E17 E18
E16
E17 E18 E16 E17
E18
E19
MASTER VOLUME: 15A 500KΩ
F01
E22 E23
F11
The nut in service parts is formed with some
string grooves. However, you need to make
fine adjustments of the grooves to fit on the
string to be used when replacing the nut.
E01 E03 E04 E05
E06
E02 E03
E04 E05
E19a
F08 F09 F10
G01a G01b
G01c
F11bF11a
E19
MASTER TONE: 05A 250KΩ
F03F02E19a
F08 F09 F10
E07
G01
G05
G06a G06b
G06c
G06
G10
E09
E11E10
E01
E04
E05
E03 E02 E04
E03
E05
Tailpiece Assembly: Wrap Around Chrome (QC825700)
OVERALL ASSEMBLY
E09
Jack Installation
F11
F11b
F11a
E01 E02
Tuning Machine Assembly

AES420
3
OVERALL ASSEMBLY AES420
D01 Body
E01 Tuning Machine Assembly KSSG-100-D02-R (Chrome) 1,2,3 Strings 3
E02 Tuning Machine Assembly KSSG-100-D02-L (Chrome) 4,5,6 Strings 3
E03 Nut Chrome with Tuning Machine Ass'y 6
E04 Washer Chrome with Tuning Machine Ass'y 6
E05 Pan Head Tapping Screw 2.0X10 FCM33G Chrome 6
E06 Rod Cover Black
E07 Oval Head Tapping Screw 2.0X10 FCM3BL Black 3
E08 Nut Graphite 43mm Black 02
E09 Tailpiece Assembly Wrap Around Chrome
E10 Tailpiece Column Chrome 2
E11 Nut Chrome 203
E15 Strings D'Addario EXL-120 1set (QC16510)
E16 Strap Button SG-type (Chrome) 3 03
E17 Oval Head Tapping Screw 3.5X25 FCM33G Chrome 3 01
E18 Spacer Felt (Black) 3 01
E19 Knob Assembly SGV-type (Chrome) MASTER VOLUME,MASTER TONE 205
E19a Set Screw M3.0X4 ZMC-BL Black 2
E20 Back Cover Switch (Black) 02
E21 Oval Head Tapping Screw 3.0X12 MFC2BL Black 3 01
E22 Back Cover Electrical (Black) 03
E23 Oval Head Tapping Screw 3.0X12 MFC2BL Black 4 01
F01 Variable Resistor 15A 500K ohm MASTER VOLUME 03
F02 Variable Resistor 05A 250K ohm MASTER TONE 03
F03 Mylar Capacitor 0.022uF 50V K 01
F04 Pickup Switch 3P Toggle 06
F05 Knob, Pickup Switch Chrome 01
F06 Nut Chrome with Pickup Switch
F07 Switch Washer Chrome with Pickup Switch
F08 Hexagonal Nut with Volume 4
F09 Flat Washer with Volume 2
F10 Toothed Lock Washer with Volume 2
F11 Jack CJ-ST/C (Nickel) 07
F11a Hexagonal Nut Chrome
F11b Rubber Ring Black
G01 Pickup Assembly Humbucker G109 FRONT (Black)
G01a Pickup Spring 201
G01b Pan Head Screw M2.5X30 FCM3BL Black 2
G01c Pickup Escutcheon Black
G05 Flat Head Tapping Screw 2.5X16 FCM3BL Black 4
G06 Pickup Assembly Humbucker G109-1 REAR (Black)
G06a Pickup Spring 201
G06b Pan Head Screw M2.5X30 FCM3BL Black 2
G06c Pickup Escutcheon Black
G10 Flat Head Wood Screw 2.4X20 FCM3BL Black 4
H01 Accessory Unit
Cord D 05
Wrench #1.5 03
Wrench #2 01
Wrench #5 04
: New Parts RANK: Japan only
REF NO.
PART NO. DESCRIPTION REMARKS
QTY RANK
--
QC825500
QC825600
--
--
QC772500
QC831300
QC770600
QC771800
QC825700
QC831000
QC286600
--
QC656100
QA132800
VB793700
QC541700
--
QC771500
03744160
QC771600
03744160
HS120070
HS120100
UA114220
QC770800
QC770900
--
--
--
--
--
QA209900
--
--
QC826000
VA795700
QC826400
QC826200
QC826500
QC826100
VA795700
QC826400
QC826300
QC826600
--
QA262600
TX900780
AA815290
AA805430
*
*
*
*
*
*
*
*
*
*
*
*
総組立
胴本体
糸巻Ａｓｓｙ
糸巻Ａｓｓｙ
糸巻取付ナット
糸巻取付ワッシャー
＋ナベタッピングネジ
ロッドカバー
＋丸皿タッピングネジ
上駒
テールピースＡｓｓｙ
テールピースコラム
ローレットナット
弦
エンドピン
＋丸皿タッピングネジ
スペーサー
ツマミＡｓｓｙ
六角穴付止めネジ
裏カバー（スイッチ部）
＋丸皿タッピングネジ
裏カバー（電装部）
＋丸皿タッピングネジ
可変抵抗器
可変抵抗器
マイラーコン
マイクスイッチ
マイクスイッチツマミ
マイクスイッチ取付ナット
スイッチワッシャー
特殊六角ナット
特殊平座金
歯付座金
ストレートジャック
特殊六角ナット
ゴムリング
マイクＡｓｓｙ
マイクスプリング
＋ナベ小ネジ
マイク枠
＋皿タッピングネジ
マイクＡｓｓｙ
マイクスプリング
＋ナベ小ネジ
マイク枠
＋皿木ネジ
付属品ユニット
コード（Ｄ）
六角レンチ
六角レンチ
六角レンチ
部品名

AES420
4
FRONT PICKUP
REAR PICKUP
OUTPUT
MASTER
TONE MASTER
VOLUME
PICKUP
SWITCH
(3 position Toggle)
GP20-03
15A 500KΩ
05A 250KΩ
0.022µF
SPECIFICATIONS
WIRING
CIRCUIT DIAGRAM
STANDARD SPECIFICATIONS
Scale Length .............................. 628.0mm
Body-Neck Construction ......... Set Neck
Length ........................................ 995.8mm
Width ......................................... 343.6mm
Net Weight ................................ 3.4kg
COLOR
Body
BL ............................................. Black
RM ............................................ Red Metallic
Neck
BL ............................................. Black
RM ............................................ Red Metallic
BODY
Material ...................................... Nato
Body Depth ............................... 48mm
FINGERBOARD
Material ...................................... Rosewood
Fingerboard Width ................... 0-F 43.0mm, 12-F 52.6mm
No. of Frets ................................ 22
NECK
Material ...................................... Nato
Neck Thickness ........................ 1-F 21.9mm, 12-F 24.7mm
PAR TS
Hardware ................................... Chrome Plated
Nut.............................................. Graphite
Tailpiece .................................... Wrap Around (Chrome)
Strings ........................................ D’Addario: EXL-120
CONTROLS
Volume ....................................... 15A 500KΩx 1
Tone ........................................... 05A 250KΩx 1
Pickup Switch ............................ 3 position Toggle Switch
PICKUPS
Front/Rear ................................ Humbucking
Magnet
Front/Rear .............................. Ceramic
PICKUP SWITCH
(3 position Toggle)
FRONT PICKUP
N M1 S M2 REAR PICKUP
S M2 N M1
FRONT PICKUP
FRONT + REAR
REAR PICKUP
to bridge ground
GY
WH
WH
WH GR
RE
RE
BL
Bare Wire
Bare Wire
MASTER VOLUME
(
15A 500KΩ
)
MASTER TONE
(05A 250KΩ)
CONDENSER
(0.022µF)
STRAIGHT JACK
Bare Wire
GROUND
END
M2
M1
START
START
END
COLD OUTPUT
HOT OUTPUT