Technics SEA-3000 Service manual

M5219P

()

IC301

IC302

DIFFERENTIALAMP

3 2

Q353

(Q354)

Pre drive

Q357,361

(Q358,362)

Driver

CLASS AABRIDGE

S604 (A+B)

S603

(B)

S602

(A)

S601 (OFF)

D617

Floating power supply

–B2

(-B3)

Switching

+B2

(+B3)

D612

D613

D610

D611

D608

D609

D614

D615

Q503

Q301,303, Q305,307 (Q302,304, Q306,308)

(4)

Rect.

SPEAKER SELECTOR

Q351

ICQ

(Q352)

adj.

Q355

(Q356)

Pre drive

BA6138

IC501

METER DRIVE AMP

1/2 Square compresser

+B1

D626,

640, 641

4 6 8

MN400IB

IC601

Q359,363

(Q363,364)

Driver

8(2)

7(3)

D605

D606

D601

D602

VR501 (VR502) (METER

ADJ.)

D603

D604

D607

D616

M5218AP

IC502

BUFFER AMP(METER)

+B1

–B1

D503

(7)

Q602 RELAY DRIVE

D628

D620

(B)

3(5) 2(6)

Q601 RELAY DRIVE

D627 D619

(A)

Q603 LED DRIVE

Q604 LED DRIVE

(D504)

D507

(D508)

Q651

Power supply

Rch

POWER METER

D629

D618 (A+B)

-B1

D625

D624

RL653

RL651

HEADPHONES

SPEAKERS

RL652

+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.

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

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.

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

Figure A

Fuse (5 ampere)

Figure B

Fuse (5 ampere)