Lehe L1 series User manual

Musical E-scooter
Version No.：20161220
120*210mm L1说明书 128克铜板纸
L1
ser i es
MANUAL
Dongguan Lehe Intelligent Technology Co.,Ltd
Add.: No.2 Minyi Road, Wusha Community, Chang'an Town,
Dongguan City, Guangdong Province, China.
Tel.: [phone]
Fax：[phone]
http://www.lehe-china.com
400-880-7350
24 hours hotline
www.lehe-china.com

L 1 I n t r o duct i o n
L 1 S p e c i f i c a t i o n s
F u n c t i o n D i a g r a m
L C D D i s p l a y D e s c r i p t i o n
I n s t a l l S t e p s
F o l d i n g & D r a g g i n g
H o w t o u s e t h r o t t l e a n d b r a k e ?
S t e r e o B l u e t o o t h S p e a k e r
H o w t o r i d e ?
S a f e t y W a r n i n g s
S a f e t y
L 1 M a i n t e n a n c e
A f t e r - s a l e s S e r v i c e
0 1
0 2
0 3
0 4 - 0 5
0 6 - 0 7
0 8
0 9
1 0
1 1
1 2
1 3 - 1 5
1 6
1 8 - 2 0
A b o u t M a n u a l
Th i s m a n u al c o nt a i n s i m po r t a n t s af e ty u s e i n s t ru c t i o n s,
pl e a s e c o mp l et e l y r e a d it i n p a t i e nc e b ef o r e d r i vi n g i t .
Pa c k a g i ng i n cl u d i n g : e-scooter X 1p c , ch a r g e r X 1 pc , u s e r m a nu a l X 1p c
Catalog Preview

L1 Introduction
L1 m us ic al e - sc o o t e r i s a n e w fa sh i o n pe rs on a l t ra ns po r t e r .
L1 Specifications
I t e m I t e m
S p e c i f i c a t i o n S p e c i f i c a t i o n
Ba t te ry C a pa c it y
Ba t te ry T y pe
Mo t o r P o w er
Mo t o r T y p e
Ma x M il e ag e
St a rt in g M et h od
Max L o ad
Wa t er pr o of
Br a ke M e th od
Ch a r g e r
Ti r e
Speed
Ma t e r i a l Ch a r g in g T i m e
Ne t W e i g h t
24V/8.8AH 36V/8.7AH
18650 lithium batt ery
180W
250W
brushless ge arle ss moto r
20-2 5KM 25-35KM
120kg
IPX4
Electromagneti c brak e & r ear foo t brak e.
110-240V; 50-60H z
8" front inflatable tire, 6" rear solid tire.
10 km/h, 15 k m/h, 20k m /h
6061 aviation alum inum 3-5h
<13kg
01 02
Un f o l d S i ze
Fold S i ze
1000 x 520 x 105 0mm
1090 x 520 x 345 mm
Non-ze r o st a rt
Pa c k a g e S iz e 1085 x 4 15 x 245mm
L1 u se s t h e s u p e r s p o r t s ca r st yl in g d es i g n co n c e p t , t o e ns u r e s t r e a m l i n e d e s i g n on t he w h ol e ve hi c l e .
Us in g a lu m i n u m 6 0 6 1 w it h f ra m e p ro d u c t i o n , a n d s tr ic tl y f ol l o w i n g t h e E ur o p e a n qu al i t y st an da rd s fo r
enti r e p r o duc t i on, b rin g th e hig h -end nat u r al t extu r e e f f ect. Bui l t-in hig h fi d e lity ste r eo B l ueto o th s p eak e r ,
to br i ng hi g h- l i f el i ke , n a tu r al an d c le a r s ou n d e xp e ri e nc e . L 1 f oc u s o n f as h io n a pp e ar a nc e , p er f ec t s o un d
expe r i ence and thre e ki n d s o f saf e t y b r a kes. Wit h del i cate stru c t ure, sma l l vo l u me, l ight wei g h t a n d si m ple
oper a t ion, and meet all the d eman d of a f a s hion trip .
L1 e -s co ot er - -t o e n j oy y ou r t ri p w it h mu si c .
20-30KM
36V/6.6AH

LCD Display Description
Function Diagram
Re v ol vi n g Sp e ed
Po l e Pa i r
Sp e e d
Ki l o m e t er
Ti m e D i s p la y
Mi l e
To t al M i le ag e
Si n gl e T ri p M il ea g e
Sp e e d G e a r
Po w e r D i s pl a y
Un d er vo l ta ge R e mi nd e r
Se t t i n g Th r ot tl e E rr o r
Mo t o r E r r or
Co n t r o l le r E r r or
Wh e el D i am et e r
Br a k e E r r or
1.D i s p l a y
03 04
El e c t r o ma g n e ti c B r a ke
In f la ta b le F r on t Wh e el
As s is t- p ul li n g W h ee l
Fr o nt L i gh t
Ch a rg er P o rt
Ki c k s t a nd
LC D D is p la y
Th r o t t l e
Bl u e t o o th Speaker
An t i -s l i p Ma t te P a pe r
Fo l d a b l e Cl i p
Wi d en P e da l
Br a ke P e da l
B ru sh l es s G ea rl e ss M o to r
Si l ic on e G ri p

2 . U sa g e
 Th er e a r e t h re e bu t to n ke y s. i s p ow er s w it ch / f u nc ti o n sw it c h. i s g ea r i nc re a si n g k e y. i s g ea r d ec re as i ng k e y.
 To l o ng p r es s t he s wi t ch k ey , i s to t u r n o n /o f f t h e po we r .
T o sh o rt p re s s th e s wi tc h k ey , i s to s w i t ch t h e LC D d is pl a y to d i ff er en t p ar am e te r s , a s be l ow :
 D IS , m ea ns r i di ng m i le ag e o f th is t i m e ( KM ) .
 O DO , m ea ns t o ta l r id in g m il ea g e (K M) .
 R PM , m ea ns t h e re v ol u t io n q ua nt i ty o f t he m o to r.
 T IM E, m e an s t he d r iv i n g t im e p er r i de ( H) .
 V OL , m ea ns t h e cu r re n t v o lt a g e( V) .
S ho rt p r es s o r to s w it ch t h e sp e ed g e ar s .
 Th is e - s c oo te r h as 3 s p e e d g ea rs f o r op t io n . 1 s t ge ar i s
1 0K M/ H; 2 n d ge ar i s 1 5K M/ H ; 3r d g ea r i s 20 K M/ H .
05 06
Install Steps
St e p 1: o p en t h e pa c ka ge , a nd t a ke
ou t t he s c oo t er a nd t h e p ar ts .
St e p 2: p u ll d o wn t h e cl i p to
un l oc k t he b u ck le l o ck , t he n
un f ol d t he e - sc oo t er b o dy .
St e p 3: w h en t h e e- s co ot e r is
u nf ol d ed , p ul l u p th e b uc k le
a nd p u t it i n to t h e gr o ov e
b et we e n th e t wo s p ea ke r s.
PART ONE: to open the scooter body

07 08
St e p 1: a l ig n t he b o tt om o f t h e
ha n dl eb a r to t h e sc o ot er b o dy .
St e p 2: l o ck t h e ha n dl eb a r wi t h th e
sc r ew a n d th e s cr ew d r iv e r in t h e
to o lk it , t he n p lu g t he s c re w h ol e w it h
th e r ub b er p l ug .
St e p 3: c o nn e ct t he c a bl e s be s id es t h e
ha n dlebar wit h th e ca b l es c ome out from
th e s co o te r b od y. T h en t h e ha n dl eb a r
in s ta ll m en t i s fi n is he d .
Fold ing & Draggin g
St e p 1: p u ll o u t bu c kl e,
un l oc k t he b u ck le l o ck .
Step 2: fo ld downwar d t he
fr o nt p a rt o f t he s c oo te r
bo d y .
St e p 3: t h e fo l di ng i s
fi n i s h e d.
When folded , c a r ry the h a n d l e b a r
of t he e-s cooter, th en you c an dra g
the sco ote r.
Folding Dragging
Install Steps
PART T WO: to install the handleba r

09 10
Cr uise co n trol : r ide the e-s coote r a t a c onsta nt speed fo r m ore tha n 6 se conds , y ou can ent er cruis e m ode. No ne e d to
pr ess the th rottl e, the e-sc ooter c a n keep rid ing at curr ent con s tant sp eed. Whi le press t h e t hrot tle or brak e o r
ch ange th e s peed, th e e -scoo ter wil l e xit crui se mode.
Not i c e: p le a s e r e lea s e t h e t h rot t l e a n d b r ake whe n t u r n o n t h e e - s coo t e r!
1、Sign a l r a nge of th e b l u etoot h s p e aker i s 0-1 0 m, wit h i n 5 m i s bett e r .
2、How to c o n n ect t h e b l u e tooth spea k e r : t u r n o n the b lueto o t h o f your mobi l e / pad，sea r c h n e a r by b l u etoot h
d e v i ces, f ind “E - scoo t e r ”and c onnec t it( O n c e c o n n e ctio n onl y acce p t on e phon e / p ad).
St art: fing er-pr e ss devic e o n r i ght hand is a thro ttle appa ratus , press it , yo u can spe e d up.
Br ake: ther e’s a electr omagn e tic brak e o n t h e l eft of the hand le bar, pres s i t, t he e-sco oter will be st o pped.
Wh ile press ing, ste p th e r ear foot bra ke can make a more ef f icien t s t op.
How to use throttle and brake? Stereo Bluetooth Speaker

How to ride?
11 12
St e p 1: p r es s t he s e co n d bu t to n to p o we r o n. Step 2: p l e ase ride i n f l a t an d open a r ea w h e n the f irst t i m e
to d r i v e .Be sure t o f o l d t h e clip, o r t h e r e ’ s a r isk r i d i ng.
Step 3: hold the handle bar by hands, put one foot on board,
and push the e-scooter by the other foot to start the e-scooter.
Press the throttle to speed up and balance the scooter while riding.
St e p 4: p u t bot h f eet o n b oar d w hil e s pee d u p, s o th a t can
ke e p s ta b l e d r iv i n g.
Safety Warnings
Pl e a s e s l ow d o w n o r ge t o f f f r o m th e e-s c o ot e r
wh e n ri d in g o n po o r ro a ds .
It 's n ot recomm e nded to rid e t his e-scoot e r i n rainy
or icy day s . I f ne c essary, ple a se l imit the speed
be l ow 1 0km/h and do not brake sudd e nly in c ase of
sl i de a nd f all.
Do n o t s t a r t or s t op i n s ud d en .
Do n o t r i d e t hi s e-s c o ot e r w h er e t he t e m p e r at u r e
is b e l o w - 5℃.
Th e r ec o mm en d ed r id e r ag e i s 1 8 an d o l d er .
Ne v er a l lo w m or e t ha n o ne p e rs on a t a t i me
to r i de t h e e- s co ot e r.
Ne v er u s e ne a r s t ep s o r s wi mm i ng p o ol s.
Do n o t us e t hi s p ro d uc t w it ho u t we a ri n g s h oe s.
Do n o t mo d if y t he v e hi cl e w it h ou t a ut ho r iz at i on .
T he m a nu fa c tu re r i s no t r es p on si b le f o r th e
co r re sp o nd in g l os s, a n d t he w a rr an t y ma y a ls o b e
i nv al i d. I n c as e o f in t er na l f ai l ur e , y o u sh o ul d c on ta c t
t he l o ca l d ea le r o r t he d e si gn a te d s er vi c e ce n te r.
Do not attempt or d o stunts or t ric ks on y our e-scooter.
Do n o t p o we r o ff t h e e-s c o o te r w h i le d r i v i n g.
Do not ride yo ur e-scooter in mud , ice , puddles or wat er.
Ne v er i m me rs e t he s c oo te r i n w at er o v e r 4 c m.
Do n o t ri d e at n i gh t o r w he n v is ib i li ty i s l im i te d.
Do n o t us e f or c o mp e ti ti o n g a me s , or o t he r s im i la r
a ct io n s, i n c as e o f lo s in g c on tr o l or m a n- m ad e
da n ge rs . Th e m an uf a ct ur e r is n o t re s po ns i bl e f or
th e r es u lt in g l os se s .
Us e rs w h o ha v e h e ar t d is e as es a r e no t a ll o we d t o dr i ve
th i s sc o ot er .
Pr e gn an t w om e n a r e n ot a l lo w ed t o r id e t hi s s co o te r.
Us e rs w h o ha v e h e ad a ch e, b a ck a ch e, o r n ec k d is e as es ,
or h a d su r ge r y o n t h es e a re a s a r e n ot a l lo we d t o r id e
th i s sc o ot er .
Us e rs w h o ar e s en si t iv e t o in j ur y, l a ck o f f le x ib il i ty o r
ca n no t c or re c tl y u nd er s ta nd t h e sa f et y r id in g r ul e s
ar e n ot a l lo w ed t o r id e t hi s s co ot e r.

S a f e t y
Any riding vehic le will have safety risk during the riding, includi ng L1 e-scoote r. Please learn the safe notice an d keep safe
in your riding.L 1 i s a fa shion and portable e-s cooter, us ed for short trips. Pleas e c onsult local de partment for laws an d
regulatio ns request in pub lic road fo r s ome countries and districts, or you can contact wit h local agent and afte r sales service offi ce.
Wa r i n g! T h e b r akes’ tempera t u r e w i l l i n c rease when they are working. Do not touch the brakes after they are used.
Do not use in crowds or crowded areas .
Be awar e of your own or others’ safet y in any circu m s t ances.
Do not use the scooter for other purp o s es.
Do not reconstruct the scooter.
Be aware of the risk that the electric brake may not work. Please also use the foot brake on the back to avoid the potential risk.
Do not touch the rotat i n g p a r ts o n th e sco o t er, l ike w heels, rotati n g sy s t e m, a n d m o t or, w ith y our h ands, hair,
bo d y pa r t or simi l a r p a r ts w h ile r iding.
Pl e a s e a v o id s harp impacts and drivin g on water surf a c e o r oth e r co n d i tion-com p l i cated roads.
Av o i d s h a r p b u mps, drainage grat e s , a n d su d d e n s u r face changes.
It is not recomme n d ed t o ri d e in the dark area s at night .
N o t i c e：
13 14
Re spec t t h e right o f w a y f or othe r p eopl e , do not fri g hten pe ople , e s peci ally ki d s; Slow do wn and rem i nd pede stri a ns whil e r idin g b e hind th em.
Keep saf e distanc e while the re are othe r e-scoot ers on the wa y, do not rid e side by sid e unless th ere is enou gh space for pedestrians to go through .
Pl e a s e m a k e s u re y o u w e a r h e l met, glove ,elbow guard and knelt befo r e ri d i n g i n ca s e of dang e r .
Pl e a s e m a k e s u re p o wer i s e n o ugh a nd t h ere i s n o no i s e a n d lo o s e p r o b lem f or t h e s c o oter.
Ri d d i ng o n w e t ro a d is forb i d den, especial l y do not ride on ice road and w ater surface road.
Pl e a s e d o no t rid e on slope s ove r 15 degre e s .
Please try to avoid suddenly acceleration and slowdown, do not over-tilt or backward your body. Over-speed is not allowed.
Whe n battery power i s not enough, please r i d e at a low s p e e d and charge the s c o o t e r as quickly as y o u can.
If ther e is a risk of f a lling while riding , pl e a s e k e e p y o u rself safe and follow the princip l e of ”Bod y saf e sho u l d b e fir s t pr i o r ity”.
Do not ride with your hands in your pocket , in case of any emergen c y .
Pl e a s e d o no t put the L1 e-scoot e r in the trun k for a long time in h igh t emperatu r e we a t h er.
Pl e a s e l e a rn l ocal traffic rules and be polite in riding, take noti c e of peop l e ar o u n d t o av o i d a n y cr a s h .
Pl e a s e r i d e t h e s c o oter in a saf e spe e d un d e r c o n trol.
It is recomm e n ded t hat t he u s ers s hould check the road safety accor d i n g t o th e loc a l re g u l ations.
It is recomm e n ded t o d r i ve o n fl a t , h a r d, d r y a n d c l e a n c e m ent r oads or a s phalt roads.
Pl e a s e a v o id d riving on water surface , san d bea c h , g r a v el p a vement and fragmen t e d r o a ds.
Ra i n y w e a t her will affect the brake system and visib i l i ty, p lease be a ware of d a nger.

Pl ease do no t r ide in poo r l ight pla ces. If yo u h ave to, pl e ase slo w d own and pa y m ore att e ntio n.
Pl ease av o id ridi ng back w ards , i t's dan gerou s. It can onl y b e a ccep t ed to ride a fe w s t eps to kee p a way fro m s udde n b l ock.
Positive safe protection measures:
Before each ride , make sure th at all locki ng parts are l ocked well (follow instructions to av oid injury d uring fold ing and unfo lding,
like jamming you r fingers)
Before each ride , please car efully che ck all the scr ews status, in case of self-locking nut or other fixe d parts fail ures.
Please careful ly check if th e scooter fr ame is weld- opening, desoldering, fracture, d istortio n or other sit uations. I f yes, please do not drive to avoid the dange r.
The tire should be i nflated we ll, and has su fficient a nti-skid tire treads.
Axle jackets and o ther prote ctive equi pment shou ld be located in place.
Before driving , users shou ld prepare a nd do the insp ections following the manufacture rs’ instru ctions:
Please accelerate slowly to avoid sudden speed, which may cause unbalance, falling down and getting injured. This kind of ride habit is dangerous, most of
accidents result from it.While riding, you may have sudden dangers, so please take good care during your ride. RIDE AT YOUR OWN RISK AND USE COMMON
SENSE. The manufacturer won't take the responsibility because of improper use and do not follow the manual guidance that may cause body hurt.
Please read the ma nual caref ully and und erstand th e content.
Do not let other peo ple ride you r L1 e-scoot er unless he /she has read the manual carefully.
Safety protect ion is neces sary in ridi ng, please m ake sure you wear suitable helmets (with hatband) , gloves, ey e care devic es, kneepa ds and elbows.
Do not ride when you f eel uncomf ortable or c annot foll ow the rule and notice of the manual; Also do n ot ride when y ou drink alc ohol or take m edicine.
When battery pow er is low or sco oter keeps a larming or t he speed is limited, please get off and cha rge in time to k eep safe.
Do not lift the scoo ter from the t ire positi on to avoid th e harm that fingers may get stuck between t ire and cove r.
Please exam the sc ooter befo re riding, d o not ride it wh en there is loose or damage problems.
Wear helmet, kne e pads, glov es, elbow pr otection a nd other protective equipment.
Riding places ar e suitable f or safe ridi ng and opera tion.
Brake system is wo rking well .
The safety label i s located in p lace and eas y to underst and.
L 1 M a i n t en a n c e
The bearing will g et dirty aft er a certain t ime’s usin g, which will affect the scooter glidin g. Need to rem ove the bear ing and clea n.
The normally use d cleaners a re neutral d iesel or ker osene without water. Sometimes use wa rm lye to clea n dependin g on needs.
Either cleaner w ith filter s hould alwa ys be kept cle an.
The tire should be r eplaced wh en it is broke n or badly wor n. Use allen wrench to replace the tire. Fi rst loose th e two-side s crews with t he wrench,
then pull out the lo ck nut to remo ve the wheel .
15 16
The tire pressur e can not exce ed 35PSI.
Silicone oil lub rication i s recommen ded.
Use replacemen t parts whic h the origin al manufac turer permits, and make it installed by t he distrib utor or tech nician.
When the electro magnetic b rake is not wo rking, con tact the agent for replacing.

Do not put the battery pack where the temperature is over 50 degree or below -20 degree (For example, do not put the scooter or battery pack in the trunk exposed to
the sun). It’s not allowed to put the battery pack in fire or it will cause battery ineffective, overheating or getting fire. Other notices for battery maintenance you can
find in the battery notice plate.
If there is blot in the scooter surface, you can clean it with wet soft cloth; and if you cannot remove this hard blot, you should brush the blot
in toothbrush with toothpaste and clean it with wet cloth.
Notice: Do not us e alc ohol, gasoline, kero sen e or any corrosive an d vol ati le chemical solvent to c lean the scooter, o r it will cause damag e
on scooter appeara nce a nd inner structure. Sp ray a nd brush with hi gh- pre ssu re water gun is pr ohi bit ed. M ake sure the sco ote r is turned off
when you clean it . Unp lug the power ca ble , clo se the charge in ter fac e, in case of elec tri c sho ck or serious ma lfu nct ion d ue to the wat er.
When t h e e - s c o oter i s no t in u s e , pl e a s e p u t it i n dr y and c o ol p l a c e s i n s t e ad o f outd o o r . E x p o s ed t o sun o r to o hot o r t o o cold w ill
speed t he a p p e arance / t i r e a g i n g , s hort t h e b a t t e ry l i f e .
L1 e-scooter batter y pack maintenance
Avoid charging the scooter when power is completely used up, you could charge it when you need, so that you can extend the life of the battery. Besi des, using in
normal temperature could make batte ry function better and extend mileage, and using below 0 degree could affect battery function and short the mileage. Typically,
in the temperature of -20 degree, the mileage could only be a half of in the normal temperature, and when the temperature goes up, the mileage would increase.
Notice: Please charge the scooter ever y 2 mo nt hs w he n it i s un us ed . In c as e it w il l ca use damage to battery because of over discharge . Th is o ve r di sc ha rg e da mage is
unrecoverable because there is int el li ge nt I C re co rd t he time of battery charge and recharge, and longtim e un us ed a nd u nc ha rg ed will lead to charge problem, and
this kind of problem do not in warranty conditio n( N ot ic e: U np ro fe ssional man is forbidden to detach the battery pa ck , or i t wi ll c au se e le ct ri c sh ock and short circuit safe accident)
17 18
R ul e s o f w a r r a n ty
Af ter-sales Service
Us e r s c an e n j o y t h e wa r r a nt y t e r ms f o r t h e q u a l i ty p ro b le m s b e c au s e o f n on - h u ma n d a m ag e .
No.
Item Name Warranty D e s c r i p t i o n
01
02
03
04
05
06
Mo t or o f r ea r
wh e e l
Ba t t e r y
12 m o nt h s
18 m o n t h s
Fr a m e 2 4 m o nt h s
It c a n be c h an g ed f o r a n ew o n e wi t hi n 1 2 mo n th s( 3 m on t hs t u rn ov e r pe r io d) .
Ba t te ry C a pa c it y < O ri g in al 6 0 %
If t here a re wel d lost , brok en, an d crac king l eading out o f trac king , we can chang e
fo r a n ew one, but mo difi c atio n a nd man-m ade dama ge are exc eptio ns.
If the r e ar e fl a w s a n d s e r ious burst damag e d , we c an c h ange for a n e w o n e, b u t o v er
weigh t and man-ma de dam age ar e exce ptio ns.
Ri m o f fr o nt
wh e e l 1 2 mo n th s
Co n t r o l le r
Ch a r g e r
12 m o nt h s
12 m o nt h s
12 m o nt h s
12 m o nt h s
If th ere is func tion pro b lem and can not be repa ired, we ca n c h ange for a new on e.
If there i s function problem a n d cannot be r e p a i r e d , we can c h a n g e for a n e w one.
If there is f u nction p r oblem a n d c a n n o t b e repaire d , we can c h ange f o r a new one.
Electromag neti c
br a k e I f th e b ra k e is i n ef f ec ti v e, w e c an c h an ge f o r a n ew o n e.
Meter
07
08

Wa rr anty Card
Na m e： Te l e p h o ne：
Ad d r e s s：
Di s t r i b ut o r：H a nd l e d：
Bu y i n g D a te：F a c t or y Q C N O .：
19 20
Error Description Det a ils Re pa ir St af f D a t e
Carton barcode label
Tips： in order to get a better service, the following
barcode outside the carton box shall not be destroyed
or altered. If torn or lost, warranty will be invalid.

I stick to natural gentle sports
I closed to nature, prefer organic trips
I love to make difference
Make life special
It's a new thinking way for fresh life
It's a new wave of low-carban transportation
L1 musical e-scooter
Make difference because of you
Which kind of LOHAS are you ?
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changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the
equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.