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SCHEMATIC
DIAGRAM
— DISPLAY/KEY
BOARD
SECTION —
Note on Schematic Diagram:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
e@
All capacitors are in wF unless ot
50WV
or less are not indicated
and tantalums.
e@
All resistors are in Q and /,W «
specified.
>:
signal path.
Components for right channel hav
channel.
© Ged
: nonflammable resistor.
TO
SERVO BOARD
SERVO
Bat
SERVO
SERVO
R
OAR
'
0
BOARD
BOARD
BOARD
@
anaes
-_
45
46
47
48
49
40
lane ai
YZ
ba il
y
28V
4.8V
Sait
Geel
1c 80l
BOARD(I/2)
BOARD
M50782SP
\.
@ me
- B+ bus.
@
mmm
: B— bus.
e@
Readings
are taken
under
no.
a VOM
(50 kQ/V).
no mark:
STOP
(
): PLAY
e@
Waveforms
are
taken
to ground
oscilloscope,
Voltage
variations
may
be noted
tion tolerances.
e
Switch
:
DISPLAY CONTROL
BVA)
agy
pav
3y
4ey
$803
$804
$805
$825
cso! _ +
(1)
85-36-37)
(3)2)40)39)
(6)(5)4)
>
Fa t
a
s ;
Switch
a / CLOSE
SW BOARD(I/2)
POWER
TIMER
PLAY MODE
LOAD
IN DET.
LOAD
OUT DET
MOTOR
SWITCHIN'
CHUCKING
LASER
ON (LOAD|
LASER
ON (LASEF
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(+10)
~ (0)
(CHECK)
------\
- -----
:
"PORT
l.2mSEC
2.4mSEC
2 4mSEC
SmSEC
BUFFER
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PG2222SY
$818
S819
$820
$828 (1/2)
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\2mSEC.
2,6mSEC
3
$828(1/2)
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LB1290
BUFFER
5.8
LB1245
BUFFER
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EBG3432S
D813
AA3432S
(soaRDiy>:
BOARD(I/2 )
(CLEAR)
(> PLAY)
(HB PAUSE)
(™ STOP)
(PROGRAM)
(SINGLE)
(CONTINUE)
(ke)
( pp)
(<)
(>)
(44)
( >>)
(REPEAT)
(A — B)
(TIME)
(AUTO
DELAY)
(SHUFFLE
PLAY)
(OPEN/CLOSE)
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