Bang & Olufsen BeoLab 3500 MKII 1601 Bedienungsanleitung

BeoLab 3500 MKII

Type 1601, 1602, 1603, 1604, 1605, 1607, 1608

from serial no. 19343452

Service Manual

English

German and French, versions are available in the Retail System

CONTENTS

Survey of modules ........................................................................................ 1.1

Adjustments ................................................................................................. 2.1

Repair tips ..................................................................................................... 3.1

Disassembly .................................................................................................. 4.1

Insulation test ............................................................................................... 5.1

Speciﬁcation guidelines for service use .......................................................... 6.1

Wiring diagram ............................................................................................. 7.1

Block diagrams .................................................................................... 7.3 – 7.5

Available parts .............................................................................................. 8.1

Survey of modules 1.1

2 Switch Mode Power Supply

19 DC/DC Converter

20 Transformer left

21 Transformer right

22 Power Ampliﬁer left

22 Power Ampliﬁer right

25 NTC

31 LF Supply and Control

32 Cross Field

34 Plug PCB

35 Display, Keyboard and IR Receiver

36 Microcomputer

Seen from the front

32 35

31 22

Seen from the back

1.2

Adjustments 2.1

ADJUSTMENTS

When replacing IC1, LM3578, on PCB2, Switch-Mode Power Supply, the supply

voltage may have to be adjusted to 5V ±0.25V by means of R2 and R10:

- If 5V is above level, install R2 (R1//R2).

- If 5V is below level, install R10 (R3//R10).

SPEAKER

Adjustment of bass/treble sound level.

To be carried out only when replacing a speaker unit or PCB36, Microcomputer.

TEST MODE 01

This test mode permits manual adjustment of speaker bass and treble levels and

can only be executed from stand-by with a Beo4.

- Press MENU 0 1 GO.

The display reads SPK.CAL. to indicate that the product is ready for speaker

calibration.

- Press GO.

The display shows the present adjustment:

‘X X X X’ = left bass (LB).

‘X X X X’ = left treble (LT).

‘X X X X’ = right treble (RT).

‘X X X X’ = right bass (RB).

The value that can be changed is ﬂashing. Press >> or << to change unit of

adjustment, and change the value by pressing the digit keys. When all four

speakers have the desired encoding, press STORE, and abandon test mode by

pressing STOP.

IC1

C7 R11

C1C2

R10

2.2 Adjustments

Replacement of PCB36, Microcomputer

The bass and treble levels of the speakers are stored electronically in the

Microcomputer (PCB36). When replacing PCB36, the original bass and treble level

values must be restored:

- Install the new Microcomputer (see section 4, Disassembly, if necessary).

- In TEST MODE 01, enter the values printed on the label in the socket well:

LT (left treble) : X LB (left bass) : X

RT (right treble) : X RB (right bass) : X

- Press STORE STORE when all four speakers have been encoded as desired.

Replacement of a speaker unit

A rated value in dB is printed on the back of the new speaker unit. This value is

used for adjusting the sound level, which is done in TEST MODE 01:

- Note the value on the back of the new speaker unit

- Replace the old speaker unit.

- Execute the point TEST MODE 01.

- The rated value printed on the back of the speaker may be either positive or

negative:

Positive:

If the rated value printed on the back of the speaker is positive, the unit in

question must be damped by X number of steps. Press >> to select speaker, if

necessary (the active speaker is ﬂashing), and enter a new digit (see table).

Negative:

If the rated value printed on the back of the speaker is negative, the other three

units must be damped by X number of steps. Press >> to select the three speakers

in question, and enter new digits (see table).

Rated value in dB X steps down

0.00

+/-0.25 0 steps down

+/-0.50

+/-0.75

+/-1.00

+/-1.25 1 step down

+/-1.50

+/-1.75

+/-2.00 2 steps down

- Press STORE when all four speakers have the desired encoding.

- Abandon test mode by pressing STOP.

Repair tips 3.1

REPAIR TIPS

BeoLab 3500 can be brought into TEST MODE from stand-by with a Beo4, giving

access to the following functions:

TEST MODE 00

Display of: Software version number and time of operation in Audio mode, Video

mode and stand-by.

- Press MENU 0 0 GO.

The display reads: SW X.Y, which is the software version number.

- Press m

The display reads: A: XXXXX, which is the Audio mode operating time in hours x 10.

- Press m

The display reads: B: XXXXX, which is the Video mode operating time in hours x 10.

- Press m

The display reads: C: XXXXX, which is the stand-by operating time in hours x 10.

Press mor pto scroll in the scroll menu, and abandon test mode by pressing STOP.

TEST MODE 01

Electronic adjustment of the bass and treble levels of the speakers. See section 2,

Adjustments.

SERVICE SET-UP

BeoLab 3500 is connected to a Beomaster as an ordinary Master link installation.

As regards option programming, see User’s Guide.

TEST MODE 02

Display of Master Link error types. Gives an identiﬁcation of the error types that

may occur in the Beolink installation.

- Press MENU 0 2 GO

The display reads:

ML OK = The Master Link connection is OK.

NO ML = Master Link is not connected.

ERROR 1 = Address conﬁguration impossible.

ERROR 2 = Master Link data pulled low.

ERROR 3 = Master Link data pulled high.

ERROR 4 = Data collision on Master Link.

- Press STOP to abandon display of Master Link error types and to delete registered

errors.

The Master Link error system is a part of the software in the product. It registers

communication errors between the microcomputer, the data transceiver circuits

(PCB35) and the products connected to BeoLink. The error types will be described

below, and tips will be given regarding how the cause of the error can be found:

3.2 Repair tips

ERROR 1:

Error during address conﬁguration. No address has been allocated because too

many units are connected to the BeoLink.

- Remove all products from BeoLink, and connect them again one at a time until the

error code occurs. Disconnect that product from BeoLink.

ERROR 2:

It is not possible to transmit on BeoLink, because it has been pulled low. The error

may occur if there is no Master Link driver circuit, or as a result of a physical short-

circuit on BeoLink or in the data transceiver circuits.

- Disconnect one product from BeoLink at a time, and see if it starts up.

- Reset the faulty product, and check the connection (cable/plug) and signal path

(the data transceiver circuits).

ERROR 3:

It is not possible to transmit on BeoLink, because it has been pulled high. This

error is caused either by the pull-up resistance in the system having become too

small or by an error in the data transceiver circuit.

- Disconnect one product from BeoLink at a time, and see if it starts up.

- Reset the faulty product, check whether the Master Link cable is too long, and

check the signal path (the data transceiver circuit).

ERROR 4:

The data trafﬁc on BeoLink has been excessive, or a product has jammed and will

not receive telegrams.

- Press the operating sequence again.

- Disconnect one product from BeoLink at a time to determine which product has

jammed. Reset the faulty product, and check the Master Link connection (cable/

plug) and signal path (ampliﬁers in the data transceiver circuit).

TEST MODE 0 3

Direct selection of Master Link input. Permits the Master Link signal path to be

tested without having a BeoLink master connected.

- Press MENU 0 3 GO

The display reads:

ML SEL. = Opens the Master Link signal path.

- Press STOP to close the Master Link signal path.

Disassembly 4.1

DISASSEMBLY

Front fabric frame

- Push the front fabric frame to the side and lift it off.

When both front fabric frames have been removed, PCB35, Display, Keyboard & IR

receiver, PCB36, Microcomputer, and PCB32, Cross ﬁeld, are accessible:

- Remove the display glass (two screws) and the two plastic covers (four screws).

PCB35 can now be tilted out into service position, thereby also providing access to

PCB36 and PCB32.

4.2 Disassembly

Service position

Important!

The display glass and cabinet must be protected against scratches by placing them

on a soft base.

- Remove the sixteen screws, A, behind the front fabric frames.

- Place the front face down.

- Remove the socket well by ﬁrst removing the two Allen screws.

- Lift the cabinet up and off carefully. Place the cabinet parallel to the electronics

block, and remove the two woofer plugs (22P4) if necessary.

- When assembling the product, lower the electronics block carefully down into the

cabinet. Place the woofer leads at the centre of the cabinet so that they will not

rattle against the cabinet sides.

Inhaltsverzeichnis

Andere Bang & Olufsen Sprecher Handbücher

Bang & Olufsen

Bang & Olufsen BeoLab 4 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 4 PC Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen beolab 12 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BEOCENTER 2000 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoSound 2 3rd Generation Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 12-3 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen Beosound A5 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 2 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen Beoplay A1 1st Gen Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 4000 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 2500 Kurzanleitung

Bang & Olufsen

Bang & Olufsen Beosound Explore Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BEOLAB 28 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BEOLINK VIDEO Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 5 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 90 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen Beovox CX50 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoSound 35 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 7-1 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoSound 9000 MKIII Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen Beolit 12 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoLab 17 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen BeoSound 2 Bedienungsanleitung

Bang & Olufsen

Bang & Olufsen Beolit 20 Bedienungsanleitung

Beliebte Sprecher Handbücher anderer Marken

argon audio

argon audio IE20 Bedienungsanleitung

Denon

Denon SC-N7 Bedienungsanleitung

Gemline

Gemline Ace 3952 Bedienungsanleitung

Focal

Focal ON WALL 300 Bedienungsanleitung

HEADRUSH

HEADRUSH Maximus HRSP 5024 Bedienungsanleitung

SoundLogic

SoundLogic BCCS-6/6395 Bedienungsanleitung

Peavey

Peavey DTH 218 Bedienungsanleitung

Avantree

Avantree Pluto Air Bedienungsanleitung

Morel

Morel Integra Series INTEGRA OVATION 4 Bedienungsanleitung

Oppo

Oppo SONICA Bedienungsanleitung

Bose

Bose SoundLink Wireless Music System Bedienungsanleitung

Rocksteady

Rocksteady Stadium Bedienungsanleitung

Bowers & Wilkins

Bowers & Wilkins 4 Bedienungsanleitung

Sonance

Sonance SONOS OUTDOOR Series Bedienungsanleitung

Electro-Voice

Electro-Voice EVID FM4.2 Bedienungsanleitung

Pioneer

Pioneer XW-HTD630 Bedienungsanleitung

Onn

Onn BWA16AA002 Bedienungsanleitung

HP GL313AA - USB Speakers PC Multimedia Bedienungsanleitung