Yamaha A-S2000 Service Manual - Page 87

A

B

C

D

E

F

G

H

I

J

1

2

3

4

5

6

7

A-S2000

87

8-1

8-37

8-37

8-34

8-34

8-34

8-34

8-37

8-17

8-11

8-11

8-21

8-24

8-24

8-22

8-37

8-35

8-15

8-35

8-16

8-33

8-33

8-33

8-33

8-32

8-32

8-23

8-36

K, B, G, L models

8-6

(14)

8-6

(13)

8-6

(12)

(1)

(10)

R,L models

8-34

8-34

8-5

8-6

•

REAR UNIT

Ref No.

Part No.

Description

Remarks

Markets

部　品　名

ランク

*

8-1

WM096800

P.C.B.±ASS'Y

BALANCE

j

ＰＣＢ　ＢＡＬＡＮＣＥ

*

8-1

WM096900

P.C.B.±ASS'Y

BALANCE

UC


*

8-1

WM097000

P.C.B.±ASS'Y

BALANCE

RTKAL


*

8-1

WM097100

P.C.B.±ASS'Y

BALANCE

B


*

8-1

WM097200

P.C.B.±ASS'Y

BALANCE

G


*

8-5

WM091200

P.C.B.±ASS'Y

FUNCTION

j

ＰＣＢ　ＦＵＮＣＴＩＯＮ

*

8-5

WM091300

P.C.B.±ASS'Y

FUNCTION

UC


*

8-5

WM091400

P.C.B.±ASS'Y

FUNCTION

RL


*

8-5

WM091500

P.C.B.±ASS'Y

FUNCTION

TK


*

8-5

WM091600

P.C.B.±ASS'Y

FUNCTION

A


*

8-5

WM091700

P.C.B.±ASS'Y

FUNCTION

B


*

8-5

WM091800

P.C.B.±ASS'Y

FUNCTION

G


*

8-6

WM094800

P.C.B.±ASS'Y

FRONT

BL

j

ＰＣＢ　ＦＲＯＮＴ

*

8-6

WM094900

P.C.B.±ASS'Y

FRONT

BL

UC


*

8-6

WM095000

P.C.B.±ASS'Y

FRONT

BL

R


*

8-6

WM095100

P.C.B.±ASS'Y

FRONT

BL

T


*

8-6

WM095200

P.C.B.±ASS'Y

FRONT

BL

K


*

8-6

WM095300

P.C.B.±ASS'Y

FRONT

BL

A


*

8-6

WM095400

P.C.B.±ASS'Y

FRONT

BL

B


*

8-6

WM095500

P.C.B.±ASS'Y

FRONT

BL

G


*

8-6

WM095600

P.C.B.±ASS'Y

FRONT

BL

L


*

8-6

WM092800

P.C.B.±ASS'Y

FRONT

SI

j


*

8-6

WM092900

P.C.B.±ASS'Y

FRONT

SI

UC


*

8-6

WM093000

P.C.B.±ASS'Y

FRONT

SI

R


*

8-6

WM093100

P.C.B.±ASS'Y

FRONT

SI

T


*

8-6

WM093200

P.C.B.±ASS'Y

FRONT

SI

K


*

8-6

WM093300

P.C.B.±ASS'Y

FRONT

SI

A


*

8-6

WM093400

P.C.B.±ASS'Y

FRONT

SI

B


*

8-6

WM093500

P.C.B.±ASS'Y

FRONT

SI

G


*

8-6

WM093600

P.C.B.±ASS'Y

FRONT

SI

L


*

8-11

WK859200

REAR±PANEL

j

リヤパネル

*

8-11

WK859300

REAR±PANEL

UC

リヤパネル

*

8-11

WK859400

REAR±PANEL

R

リヤパネル

*

8-11

WK859500

REAR±PANEL

T

リヤパネル

*

8-11

WK859600

REAR±PANEL

K

リヤパネル

*

8-11

WK859700

REAR±PANEL

A

リヤパネル

*

8-11

WK859800

REAR±PANEL

B

リヤパネル

*

8-11

WK860000

REAR±PANEL

G

リヤパネル

*

8-11

WK860100

REAR±PANEL

L

リヤパネル

*

8-15

WK971700

BARRIER±SPEAKER±L

バリヤＳＰ　Ｌ

*

8-16

WK971800

BARRIER±SPEAKER±R

バリヤＳＰ　Ｒ

*

8-17

WN083100

BARRIER±PHONO

バリヤＰＨＯＮＯ

*

8-21

WM067100

SPEAKER±TERMINAL

BANANA±TYPE

jUCRTA

スピーカ端子

*

8-21

WM067200

SPEAKER±TERMINAL

NONBANAN±TYPE

KBGL

スピーカ端子

*

8-22

WM067300

SPEAKER±TERMINAL

BANANA±TYPE

jUCRTA

スピーカ端子

*

8-22

WM067400

SPEAKER±TERMINAL

NONBANAN±TYPE

KBGL

スピーカ端子

*

8-23

WK586600

METAL±TERMINAL

S-Q0204#12F

金属ターミナル

*

8-24

WK947700

SCREW±TERMINAL±STOP

D2.6

ネジ端子

8-32

WE961700

BIND±HEAD±B-TIGHT±SCREW

2.6x8±±±±±MFZN2B3

バインドＢタイトネジ

01

*

8-33

WF787100

SCREW±#B±+BONDING

3x12±±±±±±MFZN2B3

Ｂタイト＋ＢＯＮＤ

8-34

VT669300

PW±HEAD±B-TIGHT±SCREW

3x8-8±±±±±MFC2

ＰＷヘッドＢタイトネジ

01

8-35

VQ368500

PUSH±RIVET

P3545-B

プッシュリベット

01

8-36

WN711400

PUSH±RIVET

KBGL

プッシュリベット

8-37

WE774100

BIND±HEAD±BONDING±B-T.±SCREW

3x8±±±±±±±MFZN2B3

ボンディングＢタイトネジ

01

✻

New Parts

＊新規部品

Section	Page
CONTENTS	1
TO SERVICE PERSONNEL	2
FRONT PANEL	2
REAR PANELS	3
U, C models	3
R model	3
T model	3
K model	4
A model	4
B model	4
G model	5
L model	5
J model	5
REMOTE CONTROL PANELS	6
SPECIFICATIONS	7
INTERNAL VIEW	8
SERVICE PRECAUTIONS	9
DISASSEMBLY PROCEDURES	9
1. Removal of Panel Side L/ R	9
2. Removal of Top Cover	9
3. Removal of Front Panel	9
When installing the knob VOL unit:	10
When installing the knob SEL unit:	10
When installing the knob TC unit	10
4. Removal of Front Frame Ass’y	11
When checking the P.C.B.:	12
5. Removal of Amplifier Unit	13
6. Removal of Power Unit	13
When installing the power unit:	14
When checking the P.C.B.:	15
7. Removal of FUNCITON (2) P.C.B.	16
8. Removal of BALANCE P.C.B.	17
9. Removal of Speaker Terminal L/R	17
10. Removal of FUNCTION (1) P.C.B. and FRONT (10) P.C.B.	18
AMP ADJUSTMENT	19
Idling Adjustment	19
Headphone DC Offset Adjustment	20
UPDATING FIRMWARE	21
Required tools	21
Preparation and precautions before starting the operation	21
Operation Procedures	22
Confirmation of Firmware Version	26
Indication of Firmware Version	26
Factory Reset	27
SELF-DIAGNOSTIC FUNCTION	28
Protection Information Display	28
Details of Protection Information	29
Starting in the Protection Cancel mode	29
Version Information	30
Factory Reset	30
IC DATA	31
IC502: M38039xxxxx	31
IC504: LC709004A	34
IC501: TC74HC4051AFEL	34
PIN CONNECTION DIAGRAMS	35
ICs	35
Diodes	35
Transistors	36
BLOCK DIAGRAM	37
PRINTED CIRCUIT BOARDS	38
BALANCE	38
(Side A)	38
(Side B)	39
FUNCTION	40
Side A	40
(1)	40
(2)	42
(3)	44
(3)	45
MAIN	46
Side A	46
(1)	46
(2)	48
(3)	50
(3)	51
FRONT	52
Side A	52
(1)	52
(2)	52
(3)	52
(4)	54
(5)	54
(6)	54
(7)	54
(8)	54
(10)	56
(12)	58
(13)	58
(14)	58
(12)	58
(13)	58
(14)	58
SCHEMATIC DIAGRAMS	59
BALANCE	59
FUNCTION	60
1/3	60
2/3	61
3/3	62
MAIN	63
FRONT	64
1/3	64
2/3	65
3/3	66
REPLACEMENT PARTS LIST	67
ELECTRICAL COMPONENT PARTS	67
BALANCE	68
FUNCTION	69
MAIN	73
FRONT	78
Carbon Resistors	83
OVERALL ASS’Y	84
AMP L UNIT	86
AMP R UNIT	86
REAR UNIT	87

Yamaha A-S2000 Service Manual - Page 87

REAR UNIT, R, L models

Page 87 highlights