Bang & Olufsen Beo4 1624 User manual

Bang & Olufsen
Beo4
REMOTE CONTROL
Type 1624 , 1625
Beolink 1000, mk IV
Type 1503 , 1504
SERVICE MANUAL

CONTENTS
Beo4, type' 624, 1625 ........................... .. ........................... ......... 1
Beo link 1000, mk I V, ty pe 1503, 1504 . ... .............. .. ..... .. ...... 5

Bang & Olufsen
8e04
Type 1624. 1625
•
SERVICE MANUAL

CONTENTS
Brief operation guide .......................................................... 1-'
•
List of mechanical parts ....................................................... 2-1
Disassembly ........................................................................... 3-1
Adjustments and repair tips ................................................ 4-'
English German French
Service facilities via keyboard ...
4~ 1
4~5
4~9
Service position ...............
4~2
4~6
4-10
Repair guide .......
4~2 4~6 4~10
Keyboard does not work .............
4~3 4~7
4~ "
No IR / display OK ........................
4~3 4~7
4-12
Display does not work fiR is OK.
4~3 4~8 4-12
•
Fault in the display ...
4~4
4~8 4~ 12
•

Bang & Olufsen
The Beo4 remote control givesyou the possibilityto set it
up to match any Bang & Olufsen system in the best
possible way. This is done by means of option
programming and the add/removefunctions in Beo4. Only
the functions(cues) relevant for a given setup shou Id be
found visible in the display.
Option programming
Enables you to pre-program a Bang & alufsen product
setup.
Beo4 display
Press and hold
.,ri.
Then press shortly OPTION?
Mri.M
Calls up the list of cues V.OPT
.In.
Select option type (toggle) A.OPT, L.OPT
or V.OPT
:t
Key in the option number
.131_
To leave option setup
1 -1
BRIEF OPERATION GUIDE
Customizing the Beo4
Enables you to pre-program the Beo4 to match any
Bang & Olufsen system. Remove not relevant functions
(cues), and add functions you want to appear when
pressing LIST in daily use.
Be04
display
Press and hold
.!bM
Then press shortly OPTION?
.1 ••
Select function (toggle) ADD or REMOVE
(or OPTION?)
.. .,;=
Calls up the list of cues
REPEAT or
FORMAT
.1 ••
Toggle through cues Default ADD cues
(blinks): REPEAT,
EDIT, PAGE,
MONO, RESET,
TURN, RETURN,
PICTURE,
SOUND, BASS,
TREBLE,
LOUDNSS,
S.5TORE, SHIFT,
PHONO, A.TAPE2,
CDV, CD2, P-IN-P,
LINK, LlNK-AV,
A.AUX, V.AUX,
PHONE
Default REMOVE
cues:
FORMAT, STAND,
SELECT,
RANDOM, TRACK,
SPEAKER,
CLOCK, LARGE,
REVEAL, INDEX,
UPDATE, MIX,
SUBCODE,
COUNTER,
TRACKNG, LAMP,
STORE,
RECORD2,
V.TAPE2
=!I-
Press to add/remove cue Removed cues
blinks
(off = ADD cue)
.' ..
Press for next cue
.ElI.
To leave add/remove setup

1-2
BRIEF OPERATION GUIDE
Cues In display:
A
[AOD7]" (ADD A NEW FUNC TION)
Thi s we ap~ar< when you have a c~e5l e d the
spec ial Beo4 letup function. ADD? en ab les
you to add new functions ((u e~) to the Beo4
display
(A . OPTP (AUD IO OPTI ON )
Please refe r to OPTlONl for fur ther
Inf ormation.
(A , fAPEJ~ (AUDIO TAPE RECOROER )
A. TAP E appe ~ rs in the d i ~play when you pr~~
t he Be 04 ATAPE but to n. An y operat ion you
ca rr y out on th'" 8eo4 will be directed t o you,
Bang & Olufsen a udio t ~pe recorder.
(A.TAPEl] (AUDIO TAPE RECO RD ER 2)
For sw itching on a ,econdary audiO tap a
record er coorl eded to your B ~rl9 & Olu ken
audio sys te m. P r ~ GO to do So.
(A , AUX) (AUXILIARY AUDIO SOURC f)
F or ~w i tth in9 on 10 any extra a udio
eq ui pment Pfess GO to do so.
•
[SASS] (BASS TONE)
For so und ~dj u ~t ment of ba~~ ton~ in ~
Beo Li nk room. Press ... or'" to adju st as
requ ired. Please
ref~r to S.STORE. TREBLE.
LOUDNSS. and SOUND f or fu rt her
Inf ormiJlion
(8AnERY) " (BATIER y)
This cue Indicates t hat it is t ime to ch a ng e
the b
atte fl e"> in the Beo<! r emote (on tl ol .
c
ICD)" (CO MPACT DISC PlAYER)
CD a pp ea rs In the display when you pr ess the
Be04 CD button . Any operati on yo ... c~rr y o ut
on t he 8eo4 will be directed to your 8ang II<
Olulsen CD player.
(COli (COMPACT DISC P LAn R 2)
Fo r sw it c hi ng o n a secondary CO pla ye r in
<e"",ln 8 /1 ng & Olul se n aud io systems. P r ~s
GO t odo so.
(CDVI (COM
PACT DISC 1I1 0EO PLAYER )
f
or swi tch ing on a compact d i~ vi d eo player
connec ted to y our Bang & Olufs en v ) d~o
sy,tem. Press GO to do '0.
[CLOCK] ( CL OC K)
For di s pl ~ ylng t he t ime on certa in Bang 8r
Oluh e" produ cts. Pr e-.s GO t o do so. (P ren
GO "'gain t o remove the t ime).
(COUNTER) (COUNTER POSITION)
Allows
yo u to key m a spec if ic cou nter
position you wa nt to fin d on a vi deo tape To
do KI . jun pre" [ he app1" Dp{'i ate num ber
bu tt on s.
E
(EDIT]
For futur e u se .
F
[FORMATI (PICTURE FORMAT)
For optimizing the pic tur e fo r m~t on a Ba ng &
Olufsen wide-~r ee n v;doo syste m. ~r es , GO, ....
or'" to do so.
(INDEX) (T ELET EXT IND EX PA GE )
f or ca lli ng up the teJele .l Inde ~ page. Pr~
GO t od o so.
l
(LAMP] (LAMP L IG HT CO NTROL)
For 'wit ching on ~ particular lamp in your
light setup (B~ng II< Oluf se n li g ht co ntrol, Let
and LO). Key in t he a ppropri~te num~r (1-9).
and press GO~. (~LC2 Ii ght (o nlr o l on ly.)
[LARGE] (T ELETEXT ' LA RGE)
lARGE is used on cel1 a rn Ba ng 8; Olufsen T lls
f or enlarg ing t he te J ete. t page yo u are
w at c hi ng . Pr ess GO to do so .
(L-A..TP2) (LIN K AUDIO TAPE R[ CO RDER 21
P l e~ se re fer to UNK f or further inf o rma tion .
[L-COV] (LINK CDII
PL AYER)
Please refer
to LINK for further information.
(L-C02] (LINK CD P LAYER 2)
Pleas e refe r to LINK f or fu rt her I nfor ma tion.
(LIGHTI" (LIGHT CONTROL)
LIGHT appeaf5 in t h ~ d is play w hen yo u pr £'!>S
t he Be04 LI GHT b r.stton Any oper"'tl on you GI' ry
ou t o n t he Be04 w i ll be di rected to yo ur B llng
& Oluke n li g ht (o ntol(s)
[LINK] (LINK)
UNK must be u sed where the u se of II LlNK-
button is normally specified, for example fo r
$witching on your Bang & Olul s en ~yste m vi a a
Beolink proouct when the se two are placed
together in t he ,arne room. ~re S $ a $O ur{e
button (TV, RA DIO, CD . ATAPE .IIT APE) to do
w.
If you have acc~ t o any e ... ra KlUrte-s via th e
BI'l04 dIsplay. special cu es f or LlNK-opera tio n
o
tt h e.., so urces WI ll t hen appear in the 8e04
di s pl ay :
[L-A.TP2] (LINK AUDIO TA
PE RE CO RDER 2)
For ,electing LlNKth~n A. TAPE2.
[L -COV) (LINK (DV PLAYER)
Fo r ,electing LI NK then CD V
(L-C02] (LINK CD PlAYER 2)
For select in g LINK t hen C02
IL-PHONO) (LINK PH ONO)
For selecting UNK. t hen PHONO.
(L-V.TP21 (LINK IIIDEO TAPE RECORDER 2)
For
s~ l ect i ng LINK then V. TA PE2.
(LiNK-AV] (LINK AUDIONIDEO)
To obtain stereo sound from yo ... r central Bang
II< Olufsen video sy .te m in e Beo Unk room
w ith v ideo products (TV r'v l doo t~ p e reco rder).
P
r"" . f o r examp le, T il or VT APE to do so .
Bang&Olufsen
ILOPTI ' ( liN K op nO N)
P l ea~ e r efer 10 O PTI ON? f or furt her
informati on.
(LOUONSSI
(LOUDNES S)
For swit c hing th!;> l oud n ess function on/off in
a BeoLink room. Pr
es s GO repeatedly to do
so Pleas e ref er to S.S TORE. TREB LE, BASS, and
SOUND f or fu rt~ r Inf o r m~ tio n .
(L-PHOHOI ( LI NK PHONO)
Please
r ~ f e r to l INK f or fu rt her inf or matio n.
{L-V.TPZl (LI NK II tO EO TAPE R ECO R DE R 2)
P l ea~ refer t o LINK for fu rthe r inf orm at io n .
M
(MIX] (T EL ETEXT: MIX)
MIX i, u se d on certain Bang ... Oluf,en TV s for
superimposing th e le l ete~t page 00 the TV
pIcture. Prei~ GO to do 10.
[MONO) (MO NOI$TE R EO SO UND)
Fo r sw itching bet wee n th e types of ~ o u nd
( mo nolstere oll angu<lge) cUffe ntl y avail ab le
on a rad io·, TII- or ule .. ite p. o gram ; o r for
,w ltc hing betWffn t he w u nd tr ack. on a
vi deo upe Prr m GO r epe at ~dl v to do '0 .
o
[OPTION?]" ( OPT ION PREPROGRAMMING)
This cue appears w hen
you access the special
8e04
se tup function. OPTION? enabl e-. you to
pr epr og ram you r Ba ng & O Ju lsen product
s-et up . Pre-.s GO. t hen pr £'!>S LIST to di sp lay th e
ty pe of o pt io n pre pr o grammi ng yo u w ant t o
make :
IV.OPT]" (1I
10 eo OP TION)
(A.OPT], (AUDIO o p nO N)
(L.OPT]" (LINK OPT IO N)
When th e r ight optio n cu e is di.played . key in
the appropri ate optio n n umb e r.
p
(PAGE) ff EL EnX T PA GE SH£CT10N)
For
se lecti ng t~l eted pag'" on c ertain Bang
& Oluhen TV s (where pressing GOTO I ~
norma lly req ui led f or ," (ces s). Ke y in the page
number you wan t; or pr ess .... or ....
[PHONE)
For 8ang & Oluf$en professionals
only.
[PHONOI (ReCORD PlAYER)
F or s witchi ng on a Bang .... Ol ut, en record
pl ayer. Pr e" GO to do 10 ,
Wh il e PHONO IS d ls pl ay.d, and the reco rd is
playi
ng . you may p. e'll .... or ... to step
through the m usIC; and you may pres. STOP
and GO 10 pause lin d r es ume playback.
(PICTUREI
(PICTUFlE)
For oper ating t he v~ rl o ui functioo, rela te d to
the PI GUR E b ... tton o n othe r recent BM g &
Ol ... fsen r~m o t e co ntr o l (pictur e adjustme nt,
mo tor ized nand, pktur e-in.picture. etc.).

Bang&Olufsen
[P-IN-P] (PICTURE-iN-PICTURE)
For operating the picture-In-picture function
on certain Bang & Olufsen TVs. Press (for
example) the TV button to call up TV in the
sm~11 picture
Note: While P-IN-P is displayed, pr~ssing the
four coloured buttons moves the small
picture around on the 'c'een
R
[RADI01~ (RADIO)
RADIOappearsinthe display when you press
the Be04 RADIO button, Any operation you
~a rry outonthe Be04will be directedtoyour 83flg
&Olufsenradio
[RANDOMJ(RANDOM PLAY)
Fo"witch ing on the random play; n9 fu netian in
recent Bang & Olufsen CD play"",_ Pre" GO to
do SQ.
IRECORD2] (RECORD ATAPE2NTAPE2)
Starts a recording On a secondary Bang &
Olufsenaudio orvid",o tape recorder. Press GO
twice to start recording.
(REMOVE?]* (REMOVE A FUNCTION)
This cue appears
when you have accessed the
special Be04 setup function. REMOVE?
en~bles you to remove functions (cues) from
th~ Be04 display.
[REPEAT] (REPEATED PLAY)
For
'witching on the repeated playing
function in recent Bang & Olufsen CD players
Pre,s
GO to do so.
[RESET] (RESEn
Forresetting pictlJre orsound adju';!:ment,totheir
preset levels. Pr~ss GO to do so.
(RETURN] (RECORD RETURN)
for operating the record return function in certain
Bang &Olufsentape r~orders. To returntothe
spotwherea recording started, press GO.
(REVEAL] (TELETEXT: REVEAL)
For revea ling concealed
teletext information in
Bang & Olufsen
TVs. Press GO to do so.
5
(SAT]* (SATELLITE TV)
SAT appears in the display when you press
the Be04 SAT button. Any oper~tion you carry
out on the Be04 will operate your Bang &
Olufsen ,atellite TV.
(SELECT]
Forfutureuse.
(SHIFT] (SHIFT)
Foroperatingcertainfunctionsrelatedtothe
SHIFT button on other recentBang & Oluf,en
remote control~. Press 0, 3, 6, 7 or 9 to do so.
ForBdng & Olufsen
profession~ls only!
[SOUND] (SOUND)
Foroperatingthevariousfunctionsrel~tedtothe
SOUND button on other recent Bang & Olufsen
remote controls (sound adjustment).
(SPEAKER] (LOUDSPEAKERS)
For selecting the number of loud'peakers you
wa nt· in a Bang & Olufsen surround sound
setup.
Press 1-5 to do so. WhileSPEAICER is
displayed, pressing .... '1'. «. or» adjusts
loudspeaker balance.
(S.STORE] (SOUND
STORE)
For ~toring your adjusted lound levels as a
permanent setting. Pressing GO storesallthe
current sound levels simultaneously. Please
referto TREBLE, BASS, LOUDNSSandSOUNDfor
furtherillformation.
(STANO] (STAND)
For turning certain Bang & Olufsen video
sy~em~ on their motorized stands. Press "'''' or
»to do so; or key in a preset stand position
[STORE] (STORE)
For ,toring teletext memory page<>. (and for
storing Bang & Olufsen light setups). To do so,
press GO, key in
the appropriate number, and
press GO again.
(SUBCODE] (TELETEXT SUBCODE)
foroperati ng theteletextsubpagefunction in
Bang & Olufsen
TVs.
T
(TEXT]' (TELETEXT)
TEXT a ppears in the d ispl ay when you pre" the
Be04 TEXT button. Any oper~tion you carry out
on the Be04 wi II oper~te the teletext function (if
any) on the TV program you are currently
watching.
(TRACK]
Forfuture use.
(TRACKNG] (TRACKING)
Forinstanttrackingadjustmentofthevideotape
you are watching. Press .... or'" to adjust.
(TREBLE] (TREBLE TONE)
For sound adjustment oftreble tone ina BeoLink
room. Press .... or'" to adjust as required.
Please refertoS.STORE, BASS, LOUDNSS. and
SOUNDforfurther information.
[TURN] (TURN)
For "turning" thetape i n certain Ba ng & Olufsen
audio tape recorders to play the other side.
Press GO to do so.
[TV]> (TV)
TVappears in the display when you press the
8e04TV button. Any operation you carry out on
the Be04will bedirected toyour Bang &
OlufsenTV.
u
(UPDATE] (TELETEXT UPDATE)
Foroperating t heteletext update function in
Bang & Olufsen TV,.
Press GO to do so.
Repeattheoperationto se ~ th~ p~g~ when it
has been updated; or, for certain Bang &
Olufsen TVs. pres~ ».
v
(V.AUX] (AUXILIARY VIDEO SOURCE)
For ,witching on to a ny extra video equ i pment
connected to your Bang & 0 I ufsen video
system. Press GO to do so.
1-3
BRIEF OPERATION GUIDE
[V.OPT]* (VIDEO OPTION)
Please
refer to OPTlON7for further
information.
(V.TAPE]* (VIDEO TAPE RECORDER)
V. TAPEapP"ars i n the display when you pres< the
Be04 VT APE button. Any operation you carry
outonth~ Be04will be dir~ct~d toyour Bang &
Olufsenvideo tape recorder
(V.TAPE2] (VIDEOTAPE RECORDER 2)
For switching on a secondary video tape
recordercon nected to your Bang & Olufsen
video system. Pres< GO to do so.
Maintenance
Cleaning the Be04
The Beo4 remote control may be wip~d with
a soft, lint-free cloth which you have dipped in
water and wrung out firmly.
Changing the batteries
When the cue BA TTERY appears in the Be04
display,
it is to inform you that it i, time to
change the batteries in the remote control
There are three batterie, in the Be04 (placed
under the lid on the back). We recommend
that you use 1.5 volt (size AAA) Alkaline
batteries only.
When you have replaced the batterie" you
must wait for ~bout 10 seconds until the
display reads TV. The Be04 remote control is
then ready to oper~te again.
Note: We recommend that you k",ep a fin9",r
on top of the batterie~ until the lid is
replaced
* Please note ...
The cues avai/able in the 8e04 display are all
subject to change without prior notice!
Cues in the Lexicon marked \ are CUes that
are produced automatically by the 8e04
remote control. These cues are permanent
and cannot be added/removed.

2-1
LIST OF MECHANICAL PARTS
Bang&Olufsen
EXPL. VIEW
9001
9002
9003
9004
9009
9005
--~'
-------"
9006
9007

Bang&Olufsen
LIST OF MECHANICAL PARTS
9001
9002
9003
9004
9{)()5
9006
9{)()7
9{)()8
9{)()9
Survey of screws ets.
2
Parts not shown
Owners manual
3458924 Top cover
2776413 5et of buttons
2776486 Set of buttons, type 1625 (I)
8001827 PCB
2816279 Spring f. dome foil
7500304 Domefoil
2816277 Spring
3454827 Bottom
3151350 Springs with wires
8700017 Battery, Alkaline
3162476 Coverf. batteries
3320283 Display
3333034 Contact rubber
3170289 Insulating piece
2380001 Nut, M3
2011002 Screw,2.2x4
3392428 Outer carton
3397955 Foam
1162400 8e04. complete
1162500 8e04, complete (I)
3501593 Danish
3501594 Swedish
3501595 English
3501596 German
3501597 Dutch
3501598 French
3501599 Italien
3501600 Spanish
2-2
LIST OF MECHANICAL PARTS

3-1
DISMANTLING
DISMANTLING
Removal of top plate. fig. 1
Push the battery cover forwards,
and remove the batteries.
Removethe four screws A.
Place Beo4 with the keyboard
facing
down, and carefully I iftthe
rearendofthe bottom up,
forwards andoff; pay attention to
the pOSition of the leads and the IR
window at the same time.
Placethe bottom to the right ofthe
top plate with the module.
Fig. 1
hemenex
ZERLEGUNG
Demontage der Oberplatte,
Abb.l
Den Batteriefachdeckel nach
vorne schieben und die Batterien
entnehmen.
Die vier Schrauben A entfernen.
Beo4 mit der Tastatur nach
unten anbringen und den Boden
des
hinteren Endes vorsichtig
anheben, nach vorne ziehen und
abnehmen; dabei auf die Lage
der Leitungen sowie das IR-
Fenster achten.
Den Boden
auf der rechten Seite
der Oberplatte mit Modul
anbringen.
Bang&Olufsen
DESASSEMBLAGE
DepoSe
du couvercle, fig. 1
Repousser vers I'avant Ie
couvercle du compartiment a piles,
puis en lever les piles.
Enlever les
quatre vis A.
Poser Ie Beo4, clavier orient~ vers
Ie bas. Souleverdelicatement
I'extremite du fond, latireren
avant et I'enlever. Repererdans
un
memetemps I'emplacement
des cables et faire attention ala
fenetre IR.
Poser Ie fond a droite du couvercle
avec
Ie module.
Fig. 2
•

Bang&Olufsen
Removal of module PCB, fig. 2
Removal of the module gives access
to replacement ofthe top plate,
rubber keyboard, keyboard domefoil,
display, and, of course, the module
itself.
Remove the six nuts B which
hold the module in place, the
four spring-bronze screw holders
C, and the insulation piece D at
the IR diodes.
If the module has to be replaced
it is a good idea to unsolder the
leads from the battery supply
before ca refu Ily I itti ng the modu Ie
up and out of the IR window by the
display. Carry out contrast
adjustment when replacing the
module orthe display_
The keyboard domefoil is held in
place by the metal clamp E. It is
i mporta ntthatthe keyboard
domefoil is placed accurately on
the contact points by the metal
clamp when carrying out the
installation.
(NOTE! Nevertouchthecontact
points with yourfingers!l
The display can now be lifted off,
but look out for the contact rubber
F lying loosely inthe display.
Carry out contrast adjustment
when replacing the module or the
display.
(NOTE!
Nevertouchthe contact
poi nts or the contact ru bber with
yourfingers!)
The rubber keyboard can now be
removed but you have to be very
careful if you want to try to avoid
tearing the soft rubber. Carefully
press the rubber keys out of the
holes inthetop plate.
Note!
When ~5sembling Be04 it is important that all
electrical contact su rface, are dea n. a nd that
all nutsaretight but notovertightened-
e\peci~ Ilythe two nuts holding the display in
place
Demontage des Moduls (PCB),
Abb.2
Nach Demontage des Moduls lassen
sich
Oberplatte, Gummitastatur,
'Domefoil' der Tastatur, Display
sowie m6glicherweise das Modul
selbst austauschen.
Die sechs
Muttern B, die das
Modul festhalten, die drei
Schraubenhalter aus
Federbronze C sowie das
Isolierstuck D im Bereich der IR-
Dioden entfernen.
MuS das Modul selbst
ausgetauscht werden, so ist es
vorteilhaft, die Leitungen von
der Batterieversorgung
abzul6ten, bevor das Modul aus
dem IR-Fenster beim Display
vorsichtig an- und
herausgehoben wird. Eine
Kontrasteinstellung nach
Austausch des
Moduls oder des
Displays
durchfUhren.
Die 'Domefoil' der Tastatur wird
mit Hilfe einer Metallklemme E
festgehalten. Es ist wichtig, daB
die 'Domefoil' der Tastatur bei
der Montage der Metallklemme
auf den Kontaktpunkten genau
fixiert wird.
(Achtung: Niemals
KontaktWichen mit den Fingern
berOhren I).
Das Display kann jetzt
abgenommen werden; es ist
hierbei auf das Kontaktgummi F
zu
achten, das lose im Display
liegt. Nach dem Austausch des
Moduls oder des Displays eine
Kontrasteinstell ung
durchfUhren.
(Achtung: Niemals
Kontaktflachen und
Kontaktgummi mit den Fingern
beruhren!).
Es ist jetzt m6glich, die
Gummitastatur zu entfernen.
Hierbei muB aber sehr vorsichtig
vorgegangen werden, damit das
weiche Gummi nicht zerstDrt
wird. Jetzt die Gummitasten
vorsichtig aus den Lachern der
O.,erplatte vorsichtig
herausdrOcken.
Hinweis!
Beim Zusammenbau von Be04 ist es wichtig.
daB man sich vergewissert, daB aile
elektrischen Kontaktfli\chen ganz
sauber
sind. und daB aile Muttern gut - aber nicht zu
straff· angezogen 'ind; die, gilt be,onder,
fOr die beiden Muttern, die das Display
festhalten.
3-2
DISMANTLING
Depose de la carte du module,
fig. 2
La depose du module permet de
remplacer Ie couvercle, Ie clavier en
caoutchouc,
Ie film cloqu~du clavier,
I'afficheuret, bien sur, Ie module
proprementdit.
Enlever les six ecrous B
maintenant Ie module, la plaque
elastique C en bronze a trois
perforations et les isolants D au
niveau des diodes IR.
S'il est indispensable de remplacer
Ie module, il peuts'averer
opportun de dessouder les cables
reliesa
I'alimentation des piles
avant de Ie soulever avec
precaution et de Ie sortir par la
fenetre IR au niveau de I' afficheur.
Proceder au reg lage du contraste
en cas de rem placement du
module ou de I'afficheur.
La pince meta Ilique E maintient en
place
Ie film cloque du clavier.
Lors
du montage, veiller a placer
correctement Ie film cloque du
clavier sur les
points de contact a
proximite de la pince metallique.
(Attention! Nejamaistoucher les
surfaces de contact avec ses
doigts I).
II est alors possible de soulever et
de deposer I'afficheur. Faire
attention a I'elementen
caoutchouc F qui assure Ie
contact mais qui n'est pas
solidaire de
I' afficheur. Pra<eder
au reglage du contraste en cas de
remplacementdu moduleou de
I'afficheur.
(Attention! Nejamaistoucher
avec ses doigts les surfaces de
contact et I'element en caoutchouc
i).
II est alors possible d'enlever Ie
clavier en caoutchouc. U ne
extreme precaution s'impose pour
ne pas dechirer Ie caoutchouc
souple. Appuyer del icatement sur
lestouches en caoutchouc pour
les sortir par les trous pratiques
dans Ie couvercle.
Attention !
Lors du rassemblage du Be04, veiller ~ ce que
I' ensemble de, surfaces de contactsait pro pre
II est important que lesecroussoient bien
serres mais pas trop (surtout les deux ecrous
maintenantl'afficheur).

4 - 1
REPAIR TIPS, ENGLISH
REPAIR
Service facilities via keyboard
Bang&Olufsen
The repair of electronic faults in Beo4 is based on module replacement.
When replacing the display or module, an adjustment of the contrast in
the display must be carried out.
The following service information can be
obtained:
Software version.
EEPROM version.
Total number of times keys have been pressed.
Number of times'" has been pressed.
Number of times 1\ has been pressed.
Number of times LIST has been pressed.
Contrast adjustment in the display.
Key pressed Display Explanation
• + LIST OPTION?
When the keys are pressed
imultaneously, the terminal is
brought into Setup mode.
MENU + GO SW:x.x Press the keys simultaneously.
LIST EE:x.x EEPROM version
LIST A:xxxxH Total number of times keys have
been pressed x 100 (HEX).
LIST B:xxxxH Number of times ... has been pressed
x 100 (HEX).
LIST C:xxxxH Number of times A has been pressed
x 100 (HEX).
LIST D:xxxxH Number of times LIST has been
pressed x 100 (HEX).
LIST CONT:xx Current contrast adjustment.
0 Two digits in the range from 00 to 15
3 have
to be entered (start with low
values).
GO CONT:03 New changed contrast adjustment.
LIST SW:x.x Repeats the sequence.
•
Abandons service facilities .
Correct contrast Too much contrast Too little contrast
,. .. . I .• '.
1.:1,.,1 !'.,! !
.... ,
' .. ; ',

Bang&Olufsen
Service position
4-2
REPAIR TIPS, ENGLISH
During troubleshooting and repai r, Beo4 should be placed in se rvice
position.
Push the b attery cover f orwa rd s, a nd remo ve th e batte rie s.
Re mo ve t he four sc rews, and reinstall batter ies and cove r.
Pl ace 8eo4 with th e keyb oa rd facing do wn, an d carefully lift the rear
e nd of the bot tom up, forwards and o ff ; pay a tt e nt ion to t he position
of the l eads and the IR wi ndow at the same time.
Fig. 1

4-3
REPAIR TIPS, ENGUSH
Repair guide
L
I
Bang&Olufsen
If the terminal does not work, always check the following:
1. Measure the voltage from the batteries while transmitting IR at the
same time, use the v key (volume down). The voltage from the
batteries must exceed 3.5V, which corresponds to approximately 20 per
cent of the remaining battery capacity.
2. Place the terminal in service position.
3. Check the voltage across the SMD electrolyte capacitor (Vee>. The
voltage should be approx. O.2SV less than the voltage from the
batteries while transmitting IR at the same time, use the v key (volume
down).
OSC IR 455MHz _2_L~ ' ,
OSC1.8MHz_0.5m<
.~~~~~~~~~~~~ ,.Gro un d
~ V~ •• Vl ,/ . , ,. I Ri •• "3 .~.. •
":v , " ~ ~ , •• ..., ~ CG CS
• V 1 ~ M '. ~ l
o
r:xD_- ~ : .
cooGle,
- .,/,/ /
, "' ..... .
'- J •••••
•
\OSC32kH l _ 3 0~ '
vcc
Fig. 2
Keyboard does not work:
Check the SMD crystal X2 with an oscilloscope; the test point is shown
in fig. 2. When actuating one of the keys «, », 1\, v, ... , ... , yellow,
blue, green, red, LIST and -, the crystal oscillates constantly at
1.82MHz, corresponding to a period of approx. O.5l.1s. When the other
keys are actuated, the crystal oscillates at only approx. 300ms.
If X2 oscillates constantly the reason might be that a key is "hanging"
or that there is a fault in the module (PCB).
The keyboard can be checked by means of the following test points:
C1 - (6: are normally high (over 3.5V), and contain low data pulses
when one of the keys shown in the applicable column in the
table (Table 1) is actuated. Only the keys «, », A, v, .... , ... ,
yellow, blue, green, red, LIST and. transmit data pulses
continuously, the other keys transmit data pulses for only
approx. 300ms.
R1 - R6: are normally low (OV), and contain high data pulses when one
of the keys shown in the applicable column in the table (Table
1) is actuated. Only the keys «, », 1\, v, .... , ... ,yellow, blue,
green, red,
LIST and. transmit data pulses continuously, the
other keys transmit data pulses for only approx. 300ms.
If a fault is measured relative to the above, the connection between the
keyboard and the module can easily be disconnected by removing the
metal clamp in the base of the module (insulate the contact points, if
necessary). If the voltages are O.K. now {(1 - (6 over 3.5V and R1 - R6
equal to OV), the fault is in the keyboard - otherwise the module is faulty.
It is important that the keyboard domefoil is fixed accurately on the
contact points when the metal clamp is installed.
•

Bang&Olufsen
Table 1
No IR/display O.K.:
Display does not work/IR is OX.:
Fault in the display:
4-4
REPAIR TIPS, ENGLISH
The keyboard switches can be ohmed between the test points (1 - (6 and
R1 - R6 (remove the batteries first). Connection is made between the
contact points when the key in question is pressed.
C1 C2 C3 C4 CS
C6
R1 RADIO MENU LIGHT 0
TV TEXT
R2
CD
YELLOW
AV
...
SAT GREEN
R3 A.TAPE »
RECORD GO V.TAPE «
R4
9
BLUE
8 " 7 RED
RS 6 EXIT 5 A 4
LIST
R6 3 • 2 , 1 STOP
Does the display identification change when pressing RADIO, TV, SAT,
etc.
If yes, replace the module (PCB).
If no, check the keyboard (see "Keyboard does not work").
If the keyboard is O.K., replace the module (PCB).
Check the connection between the display and the module; the nuts at
the display should be tight but not overtightened. If one or several
dots are missing in the display, the reason might be that one of the
nuts is too tight/loose. Observe the display text while adjusting the two
nuts.
Check the crystal X1 by means of an oscilloscope, the test point is
shown in fig. 2. The crystal should oscillate constantly at 32kHz,
corresponding to a period of approx. 30j.Js.
Check the LCD voltages V1 -V4 (see fig. 2) with an oscilloscope,
measured relative to Vcc (plus (+) on the SMD electrolyte capacitor):
V1~-1VD[
V2,., -2V
DC
V3 "" -3VD(
V4 .. -4VD(
Any ripple on the voltages in question may be due to a short circuit
between the display and the module.
Check and carefully clean with isopropyl alcohol the contact surfaces
and
the contact rubber which establish the connection between the
display and the module.
(NOTE! Never touch the contact surfaces or the contact rubber with
your fingers!)
If one dot is missing in the display, the fault is probably in the display.
If a number of dots are missing, carefully clean the connection
between the display and the module (see Display does not workllR is
O.K.). The problem could also be a direct fault in either the display or
the module.

4-5
REPARATURTIPS, DEUTSCH
REPARATUR
Service-Funktionen Ober die
Tastatur
Bang&Olufsen
Die Reparatur von elektronischen Fehlern in 8eo4 basiert auf
Modulaustausch. Nach dem Austausch von Display oder Modul ist eine
Einstellung des Display-Konstrastes durchzufuhren.
Es k6nnen die folgenden Service-Informationen abgerufen werden:
Software-Version
EEPROM-Version
Gesamtzahl der Tatenbet~itjgungen
Gesamtzahl der Betatigungen von ....
Gesamtzahl der BetiHigungen von /\
Gesamtzahl der Betatigungen von LIST
Konstrasteinstellung des Displays
Taste Display
Erklarung
• + LIST
OPTION? Bei
gleichzeitigem Drucken der
Tasten wird das Terminal in den
Modus 'Setup' gebracht.
MENU + GO SW:x.x Die Tasten sind gleichzeitig zu
drUcken.
LIST EE:x.x EEPROM-Version
LIST A:xxxxH Gesamtzahl der Tastenbetatigungen
x 100 (HEX)
LIST B:xxxxH Gesamtzahl der Betatigungen des ....
Symbols x 100 (HEX)
LIST C:xxxxH Gesamtzahl der Betatigungen des A-
Symbols x 100 (HEX)
LIST D:xxxxH Gesamtzahl der Betatigungen von
LIST x 100 (HEX)
LIST CONT:xx Aktuelle Kontrasteinstellung.
0 Es sind zwei Ziffern im Bereich von a
3 bis 15 einzugeben (wobei mit
niedrigenWerten anzufangen ist).
GO CONT:03 Neue geanderte Kontrasteinstellung.
LIST SW: x.x Wiederholt die Sequenz.
• Verlassen
der Service-Funktionen .
Korrekter Kontrast
Zu viel Kontrast Zu wenig Kontrast
.....
"
: ....

Bang&Olufsen
Service-Position
4-6
REPARA TURTIPS, DEUTSCH
Bei Fehlersuche und Reparatur ist Beo4 in Service-Position anzubringen.
Den Batteriefachdeckel nach vorne schieben und die Batterien
entnehmen.
Die vier Schrauben entfernen und Batterien sowie Deckel wieder
anbringen.
Beo4 mit der Tastatur nach unten anbringen und den Boden des
hinteren Endes vorsichtig anheben. nach vorne ziehen und abnehmen;
dabei auf die Lage der Leitungen sowie das IR-Fenster achten.
Abb.1

4-7
REPARATURTIPS, DEUTSCH
Rep~r~tl,.lrollnleitl,lng
Tastatur funktioniert nicht:
Bang&Olufsen
Bei Nichtfunktionieren des Terminals sind stets die folgenden Punkte zu
OberprOfen:
1. Die Batteriespannung bei gleichzeitiger Abgabe von IR-Signalen
messen; hierzu die v-Taste (LautsUirke abwarts) benutzen. Die
Batteriespannung muG uber 3,5 V liegen, was ca. 20% der
Batterierestspannung entspricht.
2. Das Terminal in Service-Positon anbringen.
3. Die Spannung Ober den SMD-Elektrolytkondensator prufen (Vee)' Die
Spannung muG urn ca. 0,25 V niedriger sein als die Batteriespannung
bei gleichzeitiger IR-Signalabgabe, wobei die v-Taste (lautstarke
abwarts) zu benutzen ist.
OSC IR 455 MHz -2,2~'
OSC 1.8MHz-0.5m.
'05CJlkHz 30n'
Abb.2
RO •• "'
~I' • ~2
.... '.,
,Groood
,
" I aiel
Das SMD-Kristall X2 mit einem Oszilloskop OberprOfen, der Mel3punkt
ist in Abb. 2 dargestellt. Durch Betatigung einer der Tasten: «, », A,
II, .... , T, Gelb, Blau, Grun, Rot, LIST und • schwingt das Kristall konstant
mit 1,82 MHz entsprechend einer Periodendauer lion ca. 0,5 IJs. Bei
Beti:itigung
der ubrigen Tasten schwingt das Kristall nur wahrend ca.
300 ms.
Falls X2 konstant schwingt, kann dies darauf zurOckzufOhren sein, daB
eine Taste 'hangengeblieben' ist, oder daB das Modul (PCB) fehlerhaft
ist.
Die
Tastatur kann mit Hilfe der folgenden MeBpunkte Oberpruft
werden:
C1 - C6: Diese liegen normalerweise auf 'High' (Ober 3,5 V) und
enthalten 'Low'-Datenimpulse bei Betatigung einer der in der
entsprechenden Tabellenkolonne (Tab. 1) gezeigten Tasten.
Nur die Tasten: «, », A, v, .... , T, Gelb, Blau, GrOn, Rot, LIST
und • senden dauernd Datenimpulse; die ubrigen Tasten
senden
nur Datenimpulse wahrend ca. 300 ms.
R1 - R6: Diese liegen normalerweise auf 'Low' (0 V) und enthalten
'High'-Datenimpulse bei Bet::itigung einer der in der
entsprechenden Tabellenkolonne (Tab. 1) gezeigten Tasten.
Nur die Tasten: «, », A, v, .... , T, Gelb, Blau, Grun, Rot, LIST
und • senden dauernd Datenimpulse; die ubrigen Tasten
senden
nur Datenimpulse wahrend ca. 300 ms.
Falls an den obigen Komponenten Fehler gemessen werden, laBt sich die
Verbindung zwischen der Tastatur und dem Modul leicht entfernen;
hierzu ist die Metallklemme im Boden des Moduls abzumontieren (elltl.
zwischen den Kontaktpunkten isolieren). Sind die Spannungen jetzt in
Ordnung (C1 - C6 Ober 3,5 V und R1 - R6 gleich 0 V), so ist die Tastatur
fehlerhaft; ansonsten ist das Modul fehlerhaft. Es ist wichtig, daB die
Tastaturfolie ('Domefoil') bei der Montage der Metallklemme auf den
Kontaktpunkten genau fixiert wird.

Bang&Olufsen
Tab. 1
Kein IRlDisp/ay OK:
Display funktioniert niehtllR OK:
Fehlerhaftes Display:
4-8
REPARATURTIPS, DEUTSCH
Die Kontakte der Tastatur kbnnen zwischen den Mef3punkten (1 - (6 und
Rl - R6 (zunachst die Batterien entnehmen) 'geohmt' werden. Es besteht
Verbindung zwischen den Kontaktpunkten, wenn die betreffende Taste
gedruckt ist:
C1 C2 C3 C4 CS C6
R1 RADIO
MENO LICHT 0 TV TEXT
R2 CD GELB
AV ... SAT GRUN
R3 A.TAPE »
RECORD GO V.TAPE «
R4 9 BLAU 8 T 7
ROT
RS 6 EXIT 5 A 4
LIST
R6 3 • 2 v 1
STOP
Wechselt im Display die Identifikation bei Betatigung von RADIO, TV,
SAT usw.?
Wenn 'Ja', Modul (PCB) austauschen.
Wenn 'Nein', Tastatur liberprufen (siehe hierzu 'Tastatur funktioniert
nicht').
Wenn Tastatur in Ordnung ist, Modul (PCB) austauschen.
Die Verbindung zwischen Display und Modul OberprOfen; die Muttern
am Display mussen gut angezogen sein, aber nicht zu straff. Fehlen im
Display ein oder mehrere Punkte ('Dots'), so kann dere Grund hierfOr
sein, daB eine der Muttern zu straff/lose angezogen ist. Beobachten Sie
den Display-Text, wahrend die beiden Muttern nachjustiert werden.
Das Kristall Xl mit Hilfe eines Oszilloskops uberprOfen; der MeBpunkt
ist auf Abb. 2 dargestellt.
Das Kristall muB mit 32 kHz konstant schwingen entsprechend einer
Periodendauer von ca. 30 IJS.
Die LCD-Spannungen Vl - V4 (siehe Abb. 2) mit Hilfe eines Oszilloskops
OberprOfen -gemessen
im Verhaltnis zu Vcc (Plus (+) des SMD-
E I ektro I yt ko n de nsators):
Vl~-lVrx
V2",-2V
rx
V3",-3V
rx
V4",-4V
rx
Welligkeit ('Ripple') in den betreffenden Spannungen kann auf einen
KurzschluB zwischen dem Display und dem Modul zurOckgehen.
Kontaktflachenund Kontaktgummi, die die Verbindung zwischen dem
Display und dem Modul herstellen, OberprOfen und ggf. vorsichtig mit
Iso pro pyla~.koho!· rei n i gen
(Achtung: Niemafs Kontaktffachen und Kontaktgummi mit den Fingern
beruhren!)
Fehlt im Display ein Punkt ('Dot'), so liegt im Display wahrscheinlich ein
Fehler vor.
Fehlt eine Reine von Punkten ('Dots'), so ist die Verbindung zwischen
dem Display
und dem Modul vorsichtig zu reinigen (siehe hierzu
'Display funktioniert nicht/lR OK'). Die St6rung kann auch auf einen
direkten Display- oder Modulfehler zuruckgehen.

4-9
Bang & Olufsen
CONSEILS DE REPARATION, FRANC;AIS
REPARATION
Renseignements de
maintenance consultables par
clavier
L'elimination des erreurs electroniques affectant Ie Beo4 s'effectue en
rempla~ant Ie module. Regier Ie contraste de I'afficheur en cas de
remplacement du module au de I'afficheur.
II est possible d'obtenir les renseignements suivants relatifs ala
maintenance:
Version du logiciel.
Version de I'EEPROM.
Nombre total d'actionnements des touches.
Nombre d'actionnements de la touche ...
Nombre d'actionnements de la touche 1\.
Nombre d'actionnements de la touche LIST.
Reglage du contraste de I'afficheur.
Taper
• + LIST
MENU + GO
LIST
LIST
LIST
LIST
LIST
LIST
D
3
GO
LIST
•
Contraste correct
.- . .-. Li T
=....... 11 E
Afficheur Explication
OPTION? Commutation de la telecommande
en mode de configuration en
enfon<;ant simultanement les
touches.
SW:x.x Enfoncer
simultanement les touches.
EE:x.x Version de I'EEPROM.
A:xxxxH Nombre total
d'actionnements des touches x
100 (HEX).
B:xxxxH
Nombre total d'actionnements de la
touche ... x 100 (HEX).
C:xxxxH
Nombre total d'actionnements de la
touche A x 100 (HEX).
D:xxxxH
Nombre total d'actionnements de la
touche LIST x 100 (HEX).
CONT:xx Reglage instantane du contraste.
Entrer une valeur a deux chiffres
comprise entre 00 et 15 (commencer
par de petites valeurs).
CONT:03 Nouveau reglage du contraste apres
modification.
SW:X.x Repetition de la sequence.
Quitter Ie mode «renseignements de
maintenance».
Contraste excessif Contraste
insuffisant
" ,.
'- .. ',
c.:
. ".
.-'.
.. :'
" ..