Technics SEA-3000 Service manual

M5219P

IC301

( IC302 )

DIFFERENTIAL AMP

Q353

Q357,361

3

(Q354)

(Q358,362)

1

Pre

2

Driver

drive

4

8

ICQ

Q351

(Q352)

Q301,303,

adj.

Floating

Q355

Q359,363

Q305,307

power

(Q302,304,

(Q356)

(Q363,364)

supply

Q306,308)

Pre

Driver

drive

–B2

+B2

HEADPHONES

(-B3)

(+B3)

R ch

CLASS AA BRIDGE

BA6138

M5218AP

A

IC501

IC502

METER DRIVE AMP

BUFFER AMP(METER)

SPEAKERS

6

8(2)

–B1

+B1

(4)

1/2 Square

4

8

Rect.

POWER

B

compresser

7(3)

VR501

3(5)

1

D507

METER

(VR502)

2(6)

(7) (D508)

+

(METER

5

9

ADJ.)

+B1

D503

Q651

(D504)

Power

supply

+B1

RL653

RL651

RL652

D626,

-B1

640,

641

D601

Q601

Q602

D629

D612

RELAY

RELAY

D618

S604

DRIVE

DRIVE

(A+B)

(A+B)

D613

1

14

D602

D625

3

D610

2

7

S603

D624

D627

D628

(B)

D611

D619

D620

5

4

D608

(A)

(B)

S602

6

(A)

D609

8

10

D603

Q603

9

LED DRIVE

D614

S601

D605

D604

(OFF)

D615

12

D606

D607

11

Q604

13

LED DRIVE

D616

D617

				MN400IB
			Q503		IC601
	Switching
				SPEAKER SELECTOR
	+B1

Notes
Signal line		: Source signal
(	) indicates pin No. Right channel.

(For United Kingdom)

(“EB” area code model only)

For your safety, please read the following text carefully.

This appliance is supplied with a moulded three pin mains plug for your safety and convenience.

A 5-ampere fuse is fitted in this plug.

Should the fuse need to be replaced please ensure that the replacement fuse has a rating of 5-ampere and that it is approved by ASTA or BSI to BS1362.

Check for the ASTA mark or the BSI mark on the body of the fuse.

If the plug contains a removable fuse cover you must ensure that it is refitted when the fuse is replaced.

If you lose the fuse cover the plug must not be used until a replacement cover is obtained.

A replacement fuse cover can be purchased from your local dealer.

CAUTION!

IF THE FITTED MOULDED PLUG IS UNSUITABLE FOR THE SOCKET OUTLET IN YOUR HOME THEN THE FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF AND DISPOSED OF SAFELY.

THERE IS A DANGER OF SEVERE ELECTRICAL SHOCK IF THE CUT OFF PLUG IS INSERTED INTO ANY 13-AMPERE SOCKET.

If a new plug is to be fitted please observe the wiring code as shown below.

If in any doubt please consult a qualified electrician.

IMPORTANT

The wires in this mains lead are coloured in accordance with the following code:

Blue: Neutral, Brown: Live.

As these colours may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:

The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Black or Blue.

The wire which is coloured Brown must be connected to the terminal which is marked with the letter L or coloured Brown or Red.

WARNING: DO NOT CONNECT EITHER WIRE TO THE EARTH TERMINAL WHICH IS MARKED WITH THE LETTER E, BY THE EARTH SYMBOL OR COLOURED GREEN OR GREEN/YELLOW.

THIS PLUG IS NOT WATERPROOF—KEEP DRY.

Before use

Remove the connector cover.

How to replace the fuse

The location of the fuse differ according to the type of AC mains plug (figures A and B). Confirm the AC mains plug fitted and follow the instructions below.

Illustrations may differ from actual AC mains plug.

1. Open the fuse cover with a screwdriver.

Figure A

Figure B	Fuse cover

2. Replace the fuse and close or attach the fuse cover.

Figure A

Fuse

(5 ampere)

Figure B

Fuse

(5 ampere)

“A” terminals

Right

(not

“B” terminals

Right speaker	Left speaker
(not included)	(not included)

A

Right speaker	Left speaker
(not included)	(not included)

SE-A3000

SE-A3000

SU-C3000

B

Right speaker	Left speaker
(not included)	(not included)

SE-A3000

SE-A3000

SU-C3000

1

2

A

Headhones (not included)

B

Power meter light switch