Sony SEQ-555ES - Page 27

SEQ-555ES
Note:
e All capacitors are in uF unless otherwise noted. pF: uuF
50 WV or less are not indicated except for electrolytics
and tantalums.
e@ All resistors are in 2 and 1/,W or less unless otherwise
specified.
Components for right channel have same values as for left
channel. Reference numbers are coded from
E45} ~: nonflammable resistor.
fu : fusible resistor.
ame - B+ bus.
asmm : B— bus.
[__] : panel designation.
[_~) : adjustment for repair.
Voltages are dc with respect to ground unless otherwise
noted.
@ Readings are taken under no-signal (detuned) conditions
with a VOM (50 k2/V).
@ Voltage variations may be noted due to normal produc-
tion tolerances.
© >: signal path.
: The components identified by shading and mark
A\ are critical for safety. Replace only with
part number specified
: Les composants identifiés par une trame et une
marque A\sont critiques pour la sécurité. Ne les
remplacer que par une piéce portant le numéro
spécifié.
Note:
Voltages
are
measured
with
a
VOM
(50k9/V).
|
e@ Switch
31.5Hz2+
63Hzt+
125Hz+
250Hz+
500Hz+
1kHz+
2kHzt+
4kHz+
8kHz+
16kHz+
31.5Hz—
63Hz—
125Hz—
250Hz—
500Hz—
1kHz—
2kHz—
4kHz—
8kHz—
16kHz—
START
LEVEL +
LEVEL —
TAPE 1 INPUT
AUX 2 INPUT
AUX 1 INPUT
LINE INPUT
AEQ EQ
LINE OUT EQ
OFF EQ
REC OUT EQ
FIXED MEMORY A
FIXED MEMORY B
MEMORY 1
MEMORY 2
FIXED MEMORY C
FIXED MEMORY FLAT
MEMORY 3
MEMORY 4
AUX 2 REC OUT
AUX 1 REC OUT
LINE REC OUT
LINEOUT REC OUT
TAPE 2 INPUT
TAPE 1 — 2 REC OUT
TAPE 2— 1 REC OUT
MEMORY SET
CHARACTER
+6
+2
SEQ-555ES SEQ-555ES
@ Semiconductor Lead Layouts
2SA1175
letter side
i
CX770A
. e n+1
12 ~ Se ee
(Top view)
CX565-040
CX565-050
CX7976
CX7977
CX7978
LCc7910
M50760-410P
M54560P
M54566P
MB88421-144M
NJM4560D
SN74LS42N
TC4051BP
TC4052BP
TC4093BP
TC5501P
TC40HOOOP
uPC4557C
uPC4558C
or
slit
or ‘i
dot 12 n
(Top view)
2SB649A
2SD669A
letter side
2SD774
4PC1373H
cut
or lA
dot