Pioneer DEH-425 Manuel d'entretien - Page 38
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11.3 KEY BOARD UNIT
@ Circuit Diagram
KEY
BOARD
UN LT
Flag:
©
rn
wo
w
m
nN
oh
-—
-
— -
+ ee
+
DSENS
DPDT
KYDT UGND
a5 -SE09_\
see
|SEG4
| SEG3_N
rset
HANMY
NOR
OMS
aa
R9B3 2R2K
(178W)
R981
2R2K
ag
58
SEG15
—~
CEL1341
1L982
a
WU
CEL1341
[C901
PD6122A
KEY CONTROLLER
AND
LCD
DRIVER
1L 983
fon
CY)
cELT S41
BAND
4
1L904 ran
[
t
R989
ORO
=a
t
1
1
1
t
'
'
t
t
'
1
'
'
'
.
|
és
1
CELTS41
|
1L985
'
'
'
1
'
'
'
,
1
SHIFT
CEL1341
a oe
mee
nee
ee
ee ss
Oe
ee
mS
ee Se
oe
ee
ee
NOTE:
<—F
Symbol
indicates
a resistor.
:
No
differentiation
is made
between
chipresistors
and
Decimal
points
for resistor
discrete
resistors.
and
capacitor
fixed
values
Ak
Symbol
indicates
a capacitor.
are
expressed
as:
No
differentiation
is
made
between
chip capacitors
and
2.2-2R2
discrete
capacitors.
2.022-RB22
Fig. 11