Yamaha 2008 YW50X Service Manual page 116

B A T T E R Y I N S P E C T I O N
I INSP
C h a r g i n g m e t h o d u s i n g a v a r i a b l e - c u r r e n t (voltage) t y p e c h a r g e r
Charger A M P
meter
YES
M e a s u r e t h e o p e n - c i r c u i t v o l t -
age prier to c h a r g i n g .
t
C o n n e c t a c h a r g e r and A M P
m e t e r to the b a t t e r y and start
c h a r g i n g .
+
Make sure the c u r r e n t is h i g h e r
t h a n t h e s t a n d a r d c h a r g i n g
c u r r e n t w r i t t e n on the battery.
A d j u s t the v o l t a g e so t h a t c u r r e n t 4
is at s t a n d a r d c h a r g i n g level.
1
YES
Set the t i m e r a c c o r d i n g to the
c h a r g i n g t i m e s u i t a b l e for the
o p e n - c i r c u i t v o l t a g e . Refer to
" B a t t e r y c o n d i t i o n c h e c k i n g
s t e p s " .
NOTE:
Voltage should be measured
30 minutes after the machine
is stopped.
NOTE:
Set the c h a n g i n g v o l t a g e at
16 17 V. (Ifthe setting is lower,
charging Will be insufficient.
If t o o high, the battery Will be
over-charged.)
l
N O
1
By t u r n i n g the c h a r g i n g v o l t a g e
a d j u s t dial, set the c h a r g i n g v o l t -
age at 20 - 25 V.
+
M o n i t o r t h e a m p e r a g e f o r 3-5
m i n u t e s to check if the s t a n d a r d
c h a r g i n g c u r r e n t is reached.
N O
1
If c u r r e n t d o e s
not exceed stan-
d a r d c h a r g i n g
c u r r e n t a f t e r 5
m i n u t e s , replace
the battery.
In case t h a t c h a r g i n g r e q u i r e s m o r e t h a n 5 h o u r s , it is a d v i s a b l e to
check the c h a r g i n g c u r r e n t after a lapse of 5 h o u r s . If t h e r e is a n y
c h a n g e in the a m p e r a g e , r e a d j u s t the v o l t a g e to o b t a i n the s t a n d a r d
c h a r g i n g current.
I
J
M e a s u r e the b a t t e r y o p e n - c i r c u i t v o l t a g e after h a v i n g left t h e bat-
t e r y u n u s e d for m o r e t h a n 30 m i n u t e s .
12.8 V o r m o r e --- C h a r g i n g is c o m p l e t e .
12.7 V o r less --- R e c h a r g i n g is r e q u i r e d .
U n d e r 1 2 . 0 V --- Replace t h e battery.
3-27