Pioneer MA-9 Service Manual page 4

21
2. IC DESCRIPTIONS.
In this section, ICs truth tables are described.
16101 (NJU4052BD)
- Front switch
Stereo one-
MPX/stereo touch karaoke
IC109 (1.43), (2/3)
IC110 (1.73), (273)
L |Pins 2, 5 side|Power OFF (through)
Logic |
Pins 1, 3 side|Power ON (various operations)
10114 (NJU4053BD)
L 1|Pins 2, 12 side| TAPE REC ON
Logic os
are Ping 1, 13 side} TAPE REC OFF
IG504 (1/3) (NJU4053BD)
Logic
Pin 3 side Voice enhancer switch ON
I¢504 (3/73)
Truth table
ay
| a
3
XN
<
fo)
< o Decimal
| |
BEB
Oo
=
=| 58
Loe) Uv
x| sl 5
oO
2
pe}
3 =
~< oO
x
x] x
< wo
< »
| |
fal |
pe aes es De! Oa ee Oe pu gy ea fee ee a) Pe a Or od
eI 4
PECEEE PRY
E af E E eee
| |
EEE ER Ea Be Be
elle E E G A Flee
ps ia (se
4
Oo
=| | = |=
|
=| =
_
w
= — _
a N
=| |
|
~ ol
Logic diagram
Output
mi __
tt
[ies
| ia
| an ee ee Be
* : Open collector