Sony TA-E88 User manual

TA-E88
(Panel:
Silver)
AEP Medel
TA-E88B (Panel: Black).
AEP
Medel
UK
Medel
SPECIFICATIONS
GENERAL
Power
Requirements:
0dB=0.775 V |
240 V ac, 50/60 Hz (UK)
Outputs:
220
V
ac,
50/60
Hz
(AEP)
a
=
Power
|
Voltage
Impedance
Consumption:
22
W
REC
OUT
1,2
|
150
mV
(—14.5
dB)
(max.
15
V)
1kQ
Dimensions: Approx. 480 (w) x 80 (h) x 370 (d) mm OUTPUT 1,2 1.5 V (5.5 dB) (max. 15 V) 100 2
19
(w)
x
3.34
(h)
x
14
x
(d)
inches
Including
projecting
parts
and
controls
Approx.
9.4
kg,
20
Ib
12
oz
(net)
9.7
kg,
21
Ib
7
oz
(with
shipping
carton)
Harmonic Distortion: Less than 0.002 % at 10 V output
IM Distortion: Less than 0.002 % at 10 V output
(6O0Hz : 7kHz=4: 1)
Weight:
Frequency Response: PHONO 1,2 RIAA equalization curve +0.2 dB
TUNER, AUX 0
' = +
TAPE 1,2 ) de — 500 kHz ty dB
Filters: LOW 12 dB/oct. below 15 Hz
Less than 6 nV (weighting network A, IHF with
ATTENUATOR set to min imum,
FILTERs to OFF}
Residual Noise:
AMPLIFIER SECTION
Inputs:
Rae
|
.
Maximum
input
S/N
(weighting
network,
I
|
Sensitivity
mpedance
Capacitance
capability
(1
kHz)
|
input
level)
|
PHONO
1
2.5
mV
(—50
dB)
50
kQ
100
pF
250
mV
(—10
dB)
88
dB
{A,
2.5
mV)
Sn
at
se
i
ea ae
Pee
ee
Ones
oh
eee
eee
i
ein
elle
ee
er
er
eg
2
|
HEAD
AMP
0.125
mV
(—76
dB)
252:/1002
-
12.5
mV
(—36
dB)
80
dB
(A,
0.2
mV)
10 kQ—-100 k2j100 pF—S00 pel
HON
Vv
{+
i
—
PHONO
2
2.5
mV
{(—50
dB)
(10
k®
steps)
|
(100
pF
steps)
250
mV
{-10
dB)
88
dB
(A,
2.5
mV)
|.
—--~.~--}
---
ae
no
Sani
a)
kar
ated
td
cies
hatchet
Lo
os
a
eesti
vale
>
marae
oie
cs
ae
ad
Se
ee
wa
a
we
HEAD
AMP
0.125
mV
(—76
48)
|
2522/1002
-
/12.5
mV
(—36
dB)
80
dB
(A,
0.2
mV)
TUNER, AUX
TAPE
1.2
150
mV
(—14.5
dB)
50
kQ
_
_
105
dB
(A,
150
mV)
SAFETY-RELATED
COMPONENT.
WARNING
COMPONENTS
IDENTIFIED
BY
SHADING.
AND
A
MARK
ON.
THE
SCHEMATIC
DIAGRAMS,
EXPLODED
VIEWS
AND
IN
THE
PARTS.
LIST
ARE
CRITICAL
TO
SAFE OPERATION.
REPLACE THESE COMPONENTS
WITH
SONY
PARTS
WHOSE
PART
NUMBERS
APPEAR
AS
SHOWN.
IN
THIS
MANUAL
OR
IN
SUPPLEMENTS
PUBLISHED
BY
SONY.

MODEL IDENTIFICATION
Specification Label
SONY,
STEREO PREAMPLIFIER
MODEL NO TA—E88B
SONY,
STEREO PREAMPLIFIER
MODEL NO TA—E88
SERIAL NO SERIAL. NO
6 OO AC 220V..°~2 AC. 220V oa
50/60Hz .22W 50/60Hz 22W |
MADE IN JAPAN MADE IN JAPAN
TA-E88 (AEP Model) TA-E88B (AEP Model)
SONY.
STEREO PREAMPLIFIER
MODEL NO TA—E£88B
SERIAL NO
AC 240V 0 ~~
50/60Hz 22W
MADE IN JAPAN
TA-E88B (UK Medel)

“bh
StL
2b
pase
bens
.
ete
o
oe
oy.
:
sae
ae
aaa
arcnm
«ar
H
}
H
be
=
|
r
Hot
opoaga
ig
oo
O
itucer
—
oj
ois
joi
|
ol
o
C
;
|
i
|
|
en
Sa
2
i
i
'
|
|
|
z
:
ae
é
2
la
aa
ja
oo
0
q
jAUX
FUNCTION
“2,
jo
9
ae
a
a
=
pete
te
Cpe
oe
a
Nee
rene
ee
ee
ee
ee
i
cNd
2
ies
ees
fae
i
fe
cea
=
ie
rae
oie
a
a
es
cae
SHONO
2]
©)
rin
'
|
\
|
ey
ey
ae
|
TAPE
2
SOURCE
TAPE1
REV
STEREO
MONO
6
@
i
[CARTRIDGE
LOAD
4)
a
qa
mo;
ad
9)
CNJ
7
|
;
,
w
|
REC
OUT
1]
L-
MONITOR
MOOE
>
$8018
a
2
ob
Se
ote
c
AEC
OUT
[RE
=
i
.
3O
400
400
30
LOW
BUFFER
AMP
£0)
CNJ
8
na
|
[00k
0.
oI
L
HEAD.
aMP4
LHEAD
AMP-
FILTER
0501~505
[REC
OUT
2}
541.
(MOOE]
i
Poona
si
be
PHONO?»
L-
pHoNO
1!
RY
201
Is
:
Sake
MONITOR
4,
FUNCTION
Was
‘
2
FONE
ON
oe
PHONO
fend
fg
RE
i
[70Ka
pa
aa
eo
AME
;
fz
|
-
a
[
60KA
5
ire
ca
&
50K
ele
le
a
wn
Sar
PHONO
—by—
om
“i
SOUR
40K
we
i.
SOURCE
EO
reOoOrOo-—~"
1
30K
|
i
a
=
ds
at4HHy[2000F]
—
[20Kn]
~pHONO
1
CN.
ea)
|
:
[TUNER]
=
2s
<a
TOC
pF
10k
Bird
=
[AUX]
-
ooh
-2
Loerie
Cid
5
G}——__—_-
[TAPE]
coma
|
NU
6
=
ates
a
TAPE
2
pFes
SSL.
7
So
a
7
|
(ouTPur
LeveL]
ae
mie
Bop
RACH
ote
te
ee
io
in}
oO}
B-(2)
GND
B*2)
B-(1)
GND
BHD
=
|
i
| {
I
(
| |
|
|
1
BUFFER
ame
|
F),
29)
eat
ae
HEAD
Ae
POWER
|
Q30I-
312
"]
i
i
i
{
i
POWER
SUPPLY
SUPPLY
|
es
Ta
ety
Q1-
18
Q701-
716
'
so
mo
og,
|
pam
ibatl
OUTPUT.
AMP
ae
a
et
aes
BALANCE
0401-414
a
leg
|
co
cl
|
—
edb
Re
AAENUATOR
OFF
-20
-10
0
re
L__oureur
56
i
LEVEL
(dB)
owen]
|
=o
i
)
(NID
oO
AC
INPUT
|
OUTPUT
}
|
CNJ
10
@R-CH
IS
OMITTED
B
OUTPUT
2
HEAD
AMP
SUPPLY
Q751~ 766
POWER SUPPLY
Ql ~ 18
RELAY DRIVE AMP
Q901- 904
1 ' 7
B-(2) GND BH2) B-() GND Bet) |
(MUTING)
q883/883-vVl

‘TA-E88/E88B
1-2, CIRCUIT DISCRIPTION
4-2-1. Phono 1 and Phono 2 Input Circuits
The TA-E88/E88B is equipped with two phono
inputs — PHONO | and PHONO 2.
PHONO 1
@ When using high impedance cartridges (output
about 2.5mV):
When the FUNCTION switch (SI) is set to the
PHONO 1 position, the input impedance Zinl
(150kQ, 100pF) of equalizer amplifier is con-
nected in parallel with R1 (75kQ) across the
PHONO 1 input terminal. They serve as load
impedance for the cartridge used.
(R = 50kQ, C = 100pF)
® When using low impedance MC cartridges (output
about 125uV):
The head amplifier is connected by switching S1.
At the same time, either a 3Q or 40Q load im-
pedance (depending on cartridge impedance) is
also connected to the PHONO 1 input terminal.
For the load of 400 cartridge, the input im-
pedance Zin2 (100Q) of head amplifier is employ-
ed, and for the load of 322 cartridge R2 (332) is
connected in parallel with Zinl, resulting in
a 25Q input resistance.
PHONO Tf
PHONO 7
ZINI
Ri HEAD AMP
ls 150kQ.
100pF
—FUNCTION—
PHONO 1
R2
&} 402—
7 HEAD AMP
32
Fig, 1
PHONO 2
@ The PHONO 2 input is basically the same as the
PHONO 1 input, but also is equipped with a
PHONO 2
PHONO 2
T °
a ae
| rey. OTL
a) bf 6 2
r |
~LOAD R- -LOAD C—
10k —100kQ. 100p—S00pF
(varied in 10k9. steps} (varied in 10OpF steps)
Fig. 2
cartridge load selector. It is adjustable over 10k
to 100kQ and 100pF to SO0pF ranges when
using high impedance cartridge.
® This switch (S801) located on the top case is
a kind of rotary switch.
Fig. 3
1-2-2. Head Amplifier
Generally, the very low level signals produced by
an MC (moving coil) cartridge are amplified by step-
up transformer.
On the other hand, in the TA-E88/TA-ES88B, this
amplification is performed by a built-in head ampli-
fier. Although the use of active amplification ele-
ments (rather than passive transformers) causes some
deterioration of S/N ratio, these problems have been
successfully overcome in the TA-E88/E88B by
employing parallel-connected transistors in the head
amplifier.
The head amplifier includes a main amplifier stage
consisting of eight transistors (Q101 to Q108) con-
nected in parallel, and another eight transistors
(Q109 to Q116) differentially-connected to this
main stage, achieving gain of 27dB with usually-
low noise.
buffer amp
ey
output
input
4
_
—_
--3}-4
™
101-108
sits
i
Fig. 4
@ Parallel Connection
When a transistor is used for amplification pug-
poses, the current flowing between the collector
and emitter of the active transistor is placed under
control. Signals from the base terminal pass
through the internal resistance of the base spread

resistance
rbb’.
(This
base
spread
resistance
is
one
of
the
critical
factors
which
have
to
be
considered
in
high
frequency
amplification).
The
detailed
diagram
is
shown
in
Fig.
5.
The
lower
the
rbb’
resistance,
the
less
the
noise
will
become.
This
may
be
achieved
by
connecting
transistors
in
parallel
—
n
transistors
connected
in
parallel
reduce
noise
by
1/v/n.
This
may
also
be
considered
as
parallel-connected
transistor
collectors
(noise
output
terminals),
resulting
in
the
averaging
out
of
noise
levels
and
phase
differences
of
the
noise
elements
in
each
transistor.
collector
Ie
base
rbb’
base spread
resistance re
emitter effective resistance
emitter
Fig. 5
head amp
Fig. 6
1-2.3,. Equalizer Amplifier
The
phono
equalizer
amplifier
stage
consists
of
Q201
through
Q214.
In
order
to
design
the
TA-E88/E88B
as
a
direct-coupled
de
amplifier,
this
stage
includes
the
following
features:
@
AnFET
in
the
first
stage
i
i
|
|
TA-E88 /E88B
®@
The
Miller.
effect
by
caused
internal
capacitance
between
drain
and
gate
of
FET
in
the
first
stage
results
in
deterioration
of
high
end.
frequency
response
due
to
high
input
impedance.
To
prevent
this,
the
drain
of
FET
in
the
first
stage
is
connect-
ed
to
the
source
of
the
following
low
input
im-
pedance
transistor
(Q202).
The
impedance
of
the
equalizer
components
(R228.
to.
R230)
is
kept
low
to
further
improve
the
S/N
ratio.
The
equalizer
amplifier
output
stage
employed
to
drive
these
components
con-
sists
of
a
-2-stage
emitter-follower
push-pull
circuit.
A
dual
transistor,
featuring
two
pairs
of
elements
mounted
on
a
single
wafer,
is.
used
to
improve
the
thermal
and
pair
characteristics
for
different-
ial
operation
of
Q201,
Q202
and
Q205.
1-2-4. Buffer Amplifier
The buffer amplifier (Q301 to Q312) up to the
equalizer amplifier has a gain of OdB. That is, there
is 100% negative feedback of the output voltige
rom the output terminal to the input negative
feedback terminal.
This amplifier is used to drive BALANCE control and
ATTENUATOR.
Frequency response deterioration will occur if high-
value resistors are used in the step attenuator. The
TA-E88/E88B employs low resistance resistors
(3kQ). This also resuits in decreased thermal nose.
A buffer amplifier is used to drive the low resistarce
BALANCE control and ATTENUATOR. This ampli-
fier uses a differential-cascode amplifier in the first
stage.
Fig. 8 shows the location of the FET.
variable resistor

TA-E88/ES8B
FET
Fig. 8
1-2-5, Output Amplifier
The output amplifier consists of Q401 to Q414.
It amplifies signals from de to high frequency and
drives
OUTPUTs
1
and
2
of
TA-E88/E88B.
General-
ly, an output amplifier must be capable of delivering
high-level,
low-impedance
output
signals
to
match
a wide range of power amplifiers.
For
this
reason,
the
TA-E88/E88B
is
designed
to
supply
an
output
signal
up
to
15Vrms
with
10092
output
impedance,
This
amplifier
stage
is
also
equipped
with
the
OUT-
PUT
LEVEL
switch
(S5)
to
permit
the
output
level
to
be
varied
in
10dB
steps.
The
four
selector
positions
are
0dB,
-10dB/
—20dB
and
OFF.
1-2-6. Power Supply
Both
left
and
right
channels
have
independent
power
supplies
which:
produce
the
+42V
and
—42V_
for
B
voltage,
plus
the
+14V-and-—14V
for
the
head
amplifier,
Power
supply
circuit
for
head
amplifier
consists
of
Ql
to
Q18.
(mounted
on
head
amp
power
supply
board
Bt
RY301 |
RY351 |Q902
T2
R906 |
D904 | D903. |
a904
(Nt)
fp
ig
ob
te
twee
er secondary
ce | agar.
ate
1
alee
es
|
ot
Fig. 9
located
near
the
main
board).
The
reason
for
po-
sitioning
this
power
supply
as
close
as
possible
to
the
head
amplifier
is
to
prevent
the
introduction
of
extraneous
noise
on
the
B+
and
B—
bus.
1-2-7. Relay Drive Amplifier
This amplifier, consisting of Q901 to Q904 (mounted
on the rectifier board), drives the muting relays
RY301 and RY351. These muting relays operate
when
the
power
supply
switch
is
turned
on
and
off.
The
signal
path
is
completed
when
these
relays
are
turned
on
under
the
condition
described
below.
The
simplified
relay
drive
amplifier
circuit
is
shown
in
Fig. 9.
® When Power Supply is Switched On
1)
The
B+
and
B—
voltages
are
produced
as
soon
as
the
power
switch
is
turned
on.
2)
Since
the
base
of
Q902
is
connected
through
R906
to
an
uncharged
capacitor
C911,
the
base
voltage
is
ground
potential.
When
Q902
is
turned
on,
C911
starts
to
charge
up,
and
B+
and
B—
voltages
also
increase
gradual-
ly.
3)
After
the
B+
and
B—
voltages
have
become
stable,
and
C911
fully
charged
up,
Q902
and
Q903
turn
off,
resulting
in
Q904
turning
on
to
activate
the
relays.
The
output
signals
are
consequently
appear
at
the
output
terminals.
®
When
Power
Supply
is
Switched
Off
1)
As
soon
as
the
POWER
switch
is
turned
off,
Q901
(which
had
remained
off
due
to
D903)
and
Q902
turn
on,
and
then
Q903
also
turns
on.
Therefore,
Q904
(for
relay
drive)
turns
off.
2)
Although
both
B+
and
B—
voltages
commence
to
rapidly.
drop
to
zero
voltage,
Q901
remains
on
until
B+
voltage
reaches
about
1.2V
(Q901
VBE
Plus
voltage
drop
across
D904)
since
there
is
no
voltage
dividing
resistance
between
base
and
emitter.
of
Q901,
3)
When
B+
voltage
drops
below
1.2V,
Q904
may
be
turned.
on,
but
since
the
voltage
across
the
relay
is
less
than
the
minimum
voltage
required
to
activate.
the
relay,
the
relay
simply
remains
off
(or
muted).
4)
C912
prevents
the
misoperation
of
the
relays
due
to
the
pulse
noise
introduced
from
the
ac
line.
1-2-8.
REC
OUT
Buffer
Amplifier
The
REC
OUT
terminals
provide
fixed
level
output
signals
from
the
REC
OUT
buffer
amplifier
stage
(Q501
to
Q505}
between
the
equalizer
amplifier
and
buffer
amplifier.

1-2-9, Overall Amplifier
Although the TA-E88/E88B consists of ten de ampli-
fier stages, all of these stages are basically the same.
The output amplifier is described here as an example
of one of these stages,
|
TA-E88/E88B
TA-E88/E88B
|
Circuit Description
@
When
observing
the
signal
levels,
the
0.2Vp-p
(about
—20dB)
input
signal
applied
to
the
gate
of
Veelp
characteristics of Q404
low temperature
Fig.
11
shows
the
relevant
signal
levels
when
S5
is
Vee
|
VBE
set
to
OdB,
and
the
input
level
is
adjusted
to
obtain
——
;
.2Vp-p).
+
an
output
level
of
apoue
OdBrms
.
p-p)
The
;
Noh
iene
and
—
signs
refer
to
the
signal
polarity
at
that
point.
8B
re
Iptic
However,
the
(—)
sign
on
the
right
hand
gate
(NFB
input)
of
the
first
stage
Q401
indicates
that
this
was
+)
originally
a
negative
polarity.
Fig.
70
2
23
_
eee
ne
2Ve-
aeeve-p
\
\
/
i
/
/
\
\
/
food
\
\
f
|
/
yi
+
Sarees
t
ourput
“
pus,
;
r
7
/
Bt
era
Teal
aaa
7
dee
as
sf,
C408
[
R403
Tae
\caoa
Ree
ih
j
T
ay
0405 f
SSL
=
cone
P
C410
f T (Op
4 La output
fe EF | ___ mot,
|
Fig. 17
fevel
G407
collector
{ d8)
@
f
95 6.5, eee
i iis Q411, 413
Q407 gate
|
emitter
—~20 { oe
—~20dB
i
NFB
77dB
(0.21 Vp-p) '
{
40 +
i
i
‘ Q407 voltage gain:
77d8
60
i
-
I 0405
i voltage gain:
hd 77dB
80
1
——
jx OQ408R
Q401 gain 1308 ~ —84d8 collector
O401L drain
CS
sales
Ge
Rna
he
Maes
ure
Ota
Se
Ge
de
Gs
att
as
~700
—97dB
Q407 gate
(with no NFB)
Fig. 42 ls
N
Lgain when applying
| NFB: 20dB
J
open-loop gain:
$7dB
Note:
The —6.5dB {evel (dotted line in figure) in
addition to the OdB level (theoretical value)
at the 0407 collector, is an example of the
error incurred due to the load effect when
measuring: with an ac voltmeter of 1MQ input
resistance.
The 7dB shown as the gain (between base and
collector) for Q405 is the voltage gain. This is
important because since Q405 employs the
emitter of O407 (low input. resistance) as
collector load of G405.. This gain should
really be measured as current ratio.
Q401
is
not
measured
at
the
drain
of
Q401
(12).
However,
2.2Vp-p
(about
OdB)
signal
appears
at
the
collector
of
Q407,
and
is
extracted
from
the
emitter
follower.
The level diagram is shown in Fig. 12.
An
NFB
of
77dB
is
applied
to
the
amplifier
which
has
97dB
open-loop
gain.
Since
the
gain
of
an
NFB
amplifier
is
reduced
only
by.
the
amount
of
NFB
applied
to
that
stage,
the
level
at
the
drain
of
the
Q401
becomes
—84dB.
This
is
the
reason
why
the
signal
level
is
too
low
to..be
measured
at
the
intermediate
points
of
amplifier.
D401, Q403, Q404 and D402 form a thermally-
compensated
constant
voltage
circuit,
which
operates
as
follows
(the
voltages.
referred
to
here
are
relative
to
the
B=
voltage):
D402
(EQBO1-05)
is
a
SV
zener
diode
which
maintains
the
emitter
of
Q404
at
+5V.
level.
To
obtain
a
flat
base
voltage
(VBR).
from
the
collector
of
Q404,
the
base
and
collector
are
connected.
as
shown
in
Fig.
10.
The
characteristics
referring
to
this
connection
are
also
shown
in
Fig.
10.
When
the
value
of
Vpp
reaches
the
“shoulder”
of
the
curve,
it
suddenly
becomes
constant,
and
subsequently
varies
only
with
changes
of
tempe-
rature.
Any
temperature-related.
variations
‘in
VBE
of
Q404
are
fed
to
Q402,
but
since
Q402
and
Q404
are
identical
transistors,
these
variations
are
automatically
compensated
for
by
the
other
transistor.
Hence,
Q402
and
Q404
serve
to
comen-
sate
for
any
voltage
variations
caused
by
changes
of
temperature.
Q403
is
a
2SK42
N-channel
depression
type
FET.
As
shown
in
Fig.
13,
EG
=
ES
when
gate
and
source.
are
connected,
resulting
in
the
flow
of
a
constant
current
of
less
than
SmA.
In
other
words,
Q403
serves
as
the
load
resistance
for
Q402.
!p characteristics of depression type FET
(EG = ES)
Fig. 13
Q402
has
an
emitter
resistor
with
sufficiently
high
resistance
to
obtain.
constant.
base
voltage,
which
means
that
the
emitter
current
(collector
current)
always
remains
constant.
A
bipolar
transistor
type
constant.
current
circuit
such
as
this
can
provide
highly-constant
current
at
low.
supply
voltages.
Q401
is
a
cascode
connection
with
the
polarity
from
the
lower
gate
to
the
upper
drain
as
shown
in Fig. 11,
@
Q405,
Q406
and
Q407
form
the
second
cascode-
connection
differential
amplifier.
Q408,
Q409
and
Q410
(current-mirror
circuit)
serve
as
the
load
resistance
for
Q406
and
Q407.
The
output
from
this
differential
amplifier
appears
single-ended
at
the
collector
of
Q407,
while
the
signal
on
the
collector
of
Q406
is
passed
from
Q408;
0410
to
Q409,
Q407
and
Q409
drive
Q411
and
Q412.
Furthermore,
although
Q409
also
operates
as
a
constant
current
circuit,
and
the
Q407
collector
current
is
passed
through
R418
and
R419
to
Q411
and
Q412,
signals
of
almost
equal
amplitude
are
passed
to
these
two
transistors
(Q411
and
Q412).
In
addition,
the
thermal
compensation
for
O410R
and
Q409
is
achieved
by
Q410L
and
0408.
@
Q411,
Q412,
Q413
and
0414
form
a
cross
coupled
current
driver
circuit,
comprising
pairs
of
NPN,
PNP
emitter-followers.
CAUTION
The
transistors
have
a
resistor
to
their
collector
or
emitter
circuits.
These
transistors
will
be
not
damaged
if
any
of
transistor
terminals
are
short-circuited,
The
exception
is
Q403
which
supplies,
constant
current
to
D401,
Q404
and
D402.
Ifthe
drain
and
source
of
Q403
are
short-circuited,
D401, Q403,
Q404
and
D402
will
be
completely
destroyed.
1-3. Parts Information
1-3-1. Small Resistors
The
TA-E88/E88B
uses
many
small
resistors,
similar
to
the
type
shown
in
Fig:
14.
These
resistor:
are
“%W
metal-oxide
with
an
accuracy
of
1%.
Notethat
this
accuracy
rating
has
been
omitted
in
the
sclema-
tic
diagrams.
(The
“4W.
and
%W
carbon
resstor
accuracy
ratings
are
indicated),
shows multiplier
18
00
Gu.
represents
15k
€2
metal-oxide resistor.
Fig. 14
1-3-2. Square Tantalum Capacitors
The
capacitors:
employed.in
the.
TA-E88/E88B
(as
shown
in.Fig:.
15)
are
the
same.
square.
tantauna
capacitors
used
in
pulse
circuit
power
supplies,
stc:
These
capacitors-are
especially
used
in
the
B+
andp—
bus
where
their
greater
by-pass
effect
is
neeed..

square tantalum capacitor
ce
Fig, 18.
1-3-3. Mounting of Components
When mounting the components on the circuit board,
take care that they do not touch the shafts of
switches; variable resistors; etc. Be particularly
careful to prevent any contact between the com-
pound FET covered by metal case, and the ATTENU-
ATOR shaft, and the diode leads and BALANCE
control shaft.
Fig. 16
1-3-4, Cam Equipped Switch Indication
The selector switches employed in. TA-E88/E88B are
each equipped with a'cam, and a number (3. or 4) of
slide. switch elements which move. in. an’ irregular
fashion when the cam rotates.
As.an example of this arrangement, S1L (FUNCTION
PHONO INPUT) is shown in Fig. 17.
There are a total of ten switches employed in the
TA-E88/E88B,° making it. impossible to ‘determine
which. points are making contact at. different select
positions. For this reason, both the schematic. dia-
gram and the mounting diagram include special charts
of the contact patterns for each switch position.
Bato wie
| TA-E88/E88B
TA-E88/E88B |
J
Note that these charts indicate the position of the
blue switch link heads as viewed from the com-
ponent side, thereby simplifying checking operations
as well.
FUNCTION
oo PHONO 14
400. ———
HEAD AMP
< : aq
LOW. FILTER
ISHz.42dB/OCT
_ PHONO2—\
movement of switch contacts viewed from
component side
Fig. 18
SIL-1 \
S{L-2 | selector links when
SIL-3 setting SIL to. step 3
(top view}
SIL-4
:
SIL (FUNCTION PHONO Switch} viewed from
component side
Fig. 19
1-3-5. Order of Parts in Switch Assemblies cam
A typical switch assembly, including the switch,
the joint, front panel and selector knob, is shown
in Fig. 20.
Whenever such switch assemblies are taken apart,
the pesition of parts must be noted, either by mark-
ing each part, or by some other method.
link
1-3-6. Switch Angle Alignment (See Fig. 21.) |
This switch is turned on or off through the switch |
links and switch cam. A feature of the switch is switch elements
the absence of click stops which. determine the
actual switching position. Therefore, it is necessary
to correctly align the selector knob precisely with its
corresponding switch position.
Fig. 217
a : joint
knob
switch
i ai
circuit board
front panel detent selector shaft
Fig. 20
—10—

SECTION 2
DISASSEMBLY
TA-E88/E88B
Note:
Follow
the
disassembly
procedure
in
the
numerical
order
given.
CASE
REMOVAL
@
B4x8
-
9
@ case screws
ee y : @ > case screws
=
@ BV3 x 6 (eleven)
BOTTOM
PLATE
REMOVAL
Q
bottom
plate
fe
ATTENUATOR
KNOB
REMOVAL
it)
Loosen
the
set
screw
with
an
L-shaped
hexagonal
wrench
(1.5mm)
@
ATTENUATOR
knob
moval.
Note:
Other
knobs
can
be
removed
after
the
panel
re
Pe fy

TA-E88/E88B
PANEL REMOVAL @ Loosen two set screws with an L-shaped
hexagonal wrench (1.5mm)
[
KNOB REMOVAL
| 1 Loosen the set screws with an L-shaped
hexagonal wrench (1.5mm) from the
bottom side of the panel.
Pull the knobs out.
nh
/ pe roo we i $ n \
Loosen four set screws with @ PS3 x6
@ PS3 x 6 and an L-shaped hexagonal wrench and
RK4 xe (1.5mm). RK4 x8
5] Pull the pane! out. {Knobs are attached to the panel.)
CIRCUIT BOARD CHECKING
Circuit boards can be repaired without removal.
With electrolytic capacitors near the conductor
side of head amp power supply boards discannected,
the head amp power supply boards can be checked.
rectifier board main board
head amp
power supply
board
ae bt eos

=
|
TA-E88/E88B TA-E88/E88B
aR |
NOTE
ON
ROTARY
SWITCH
INSTALLATION
JOINT
(B)
REMOVAL
OUTPUT
MONITOR
FUNCTION
Do
not
pull
the
front
part
of
the
joint
(B)
LEVEL
(S3R)
(S1R)
in
the
direction
shown
by
the
arrow,
because
(SER)
MODE
FUNCTION
the
front
part
is
combined
with
the
rear
part
Sy
(S4R)
(S2R)
through
a
spring.
Be
sure
to
/oasen
the
setscrews
and
remove
pen
the
joint
(B),
>
A-
Joint {B)
|
Pee
front
part
‘
se variable resistor
L-CH
/
(ATTENUATOR
or
a
rear
part
BALANCE
control}
1
| FUNCTION
(SIL) |
OUTPUT LEVEL MODE. MONITOR FUNCTION i
(S5L) (S4L) (S3R) (S2L)
Switch Positions in Installation ($1, $3 to $5)
When the switch shaft is set the mark side up, the cam
Switch
Positions
in
Installati
|
of
the
switches
are
positioned
as
shown
below:
meee
_
joint (A)
connection spindle (B) eee pin
c ae
panel side mark
In the switch position shown above, joint the
switches with the joints (A) and the shafts, and paren
| install the knobs so that the knobs indicate the
| specified position.
Set the switch lever to the AUX position,
and install the link rod as shown below.
Do not protrude link rod set screw
the link rod.
switch lever
(AUX position)
> Top view
]
L-CH R-CH
position of the middie cam
{shaded portion)
Position of the cam
(shaded portion of switches).
OUTPUT LEVEL sae ees FUNCTION
knob knob
{OFF position} EV aA BSI ; perner (PHONO 7 32 position)
[>] [ 8] [e | [e] Front view
—~13—
Spa

| TA-E88/E88B
TA-E88 /E88B
SECTION 3
ADJUSTMENTS
OFFSET ADJUSTMENT—1 (PHONO EQ AMP) OFFSET ADJUSTMENT-—2 (OUTPUT AMP)
Setting: Setting:
POWER switch (S6) : ON POWER switch (S6) : ON
FUNCTION switch (S1) : PHONO 1 ATTENUATOR control : fully counter-
FUNCTION switch (S2) : PHONO clock wise
OUTPUT LEVEL switch (S5) : OdB
Procedure:
Procedure:
oscilloscope
(dc range, vertical amplifier
sensitivity, 1mV Adiv or less)
1. Terminate the PHONO 1 jack with a shorting plug.
2. Adjust RT201 (L-CH) and RT251 (R-CH) for
OV reading on VOM.
Specification:
EQ OUT level: 0 0.1V
OUTPUT 1
Adjustment Location: OVde
— main board — ;
i
1.
Adjust
RT401
(L-CH)
and
RT451
(R-CH)
for
OV reading on oscilloscope.
L-CH R-GH
vom een Zo : pane
icles rsiiga) ay. fe Specification:
J]
f
2
Uy
(Pal
ig
\
OUTPUT
1
level:
0
+0.1mV
KK | ol iS |
\ = / \ i . .
9
|
>
ee
“eH
ue
Adjustment
Location:
Royse
Se
See
—
main
board
—
QUTPUT 1 (R-CH]) RT451 (R-CH)
RT257 RT201
(R-CH) (L-CH)
__.. PHONO 7
jack
(R-CH])
RT401 (L-CH)
OUTPUT 1 (L-CH}
45=
OFFSET ADJUSTMENT-—3 (BUFFER AMP)
Setting:
POWER switch (S6) : ON
FUNCTION switch (S1) : TUNER
MONITOR switch (S3) : SOURCE
MODE switch (S4) : STEREO
BALANCE control : mechanical mid
ATTENUATOR control : fully clockwise
OUTPUT LEVEL switch (S5) : OdB
oscilloscope
Procedure:
| {de range, vertical amplifier
sensitivity; ImV /div or less}
OUTPUT 7
1. Terminate the TUNER jack with a shorting plug.
2. Adjust. RT301 (L-CH) and RT351 (R-CH) for
OV reading on oscilloscope.
Specification:
OUTPUT 1 level: 0 +0.1mV
Adjustment Location:
— main board —
OUTPUT
1{R-CH)
RT351
(R-CH)
© TUNER jack
| {R-CH}
@)— TUNER jack
S (L-CH)
Cs Bae |
\
|
OUTPUT
Tf
(L-CH}
RT307
(L-CH)
MUTING TIME CHECKING
Confirm the operation of the relays (RY301, 351)
® RY301 and RY351 are energized at about eight
1 seconds after the POWER switch is turned ON.
® RY301 and RY351 are released at the moment
when the POWER switch is turned OFF.
[—
-16—

TA-E88/E88B
—R-CH—
DIAGRAMS
[HEAD
AMP
POWER
SUPPLY
BOARD]
4-1. MOUNTING
DIAGRAM
—
Conductor
Side
—
[MAIN
BOARD]
@ Color
code
of
sleeving
over
the
end
of
the
jacket.
C
£5)
|
ecnual
\
@
4
6
2
5.65
759
75)
453
a
[PHONO]
10
54
167
256,257
355
352
452
a
€
:
|
Bg
ae
“ie
This
board
is
directl
ted
t
ils
Doard
is
directly
connecte
ie)
152
mee
255
4gi
452
the
main
board
with
soldering.
35!
ANF
{51
253
r
®
—R-CH—
"
{CR
BOARD]
®
under
no
signal
conditions
with
3
251,
252
aie
[
500nF
(OKA.
400pF
F90xn
|
hoes
ies
7
‘
.
300pF
rere
BOK
|
_
Note:
200pF
[
7OKa
|The
pair
transistors
of
each
differentical
amplifier
at
the;
LOOpF
com
|
power
supply
section
must
be
replaced
at
the
same
time.
ae
|
(O15
and
17,
Q65
and
67,
Q16
and
18,
Q66
and
68,
Q701
wee
[30Kn.
[and
703,
752
and
753,
Q710
and
711,
Q760
and
761)
cra
a
iS
pean
Loe
L1OKn
|
|
300pF
200pF
[100pF
|”
554
,553
551
552
>
552
a
551
!
eS
Se
eee
nt
ee
ee
ct
ee
ae
me
<
201
,
202
|
|
TA-E88B
UK
MODEL
Tee
ae
\
{CR
BOARD]
311,312
201,
202
ae
Fes
CARTRIDGE
h
#
i
jon
$8018!
60)
75K
500pF
"R02.
atk
(FUSE
BOARD]
308,310
aO0pF
ilé
402
|
300pF
|
108
203
{
200pF
|
115
118
205
401
|
ag
TO0pF
|
107
307,303
any
402
14
119
204
wigs
ic:
HOR aie
813117
“206,207
304
401
ae
|
105,
2
405.
j
201
evo
pF
mn
Sein
1
104"
210
208.
709,
708
a6
702,701
|
|
fee
|
,
302
1035
120
709
710,702
“40g
403
|
i
25
102
408
i
ro
109
$21,
211,212
we
ae
101
715
(05
301,407,409410
|
PLt
rat
i
|
|
(power)
(fT
“>
i
H
2
f
714
706705...
412
wy
|
oa
ee
413,411,
414
lot,
102
7I6
708
ee
ee
lt
ee
|
713
man
|
se
aa
|
of
KHEAD
AMP
POWER
SUPPLY
BOARD]
|
Je
ee
eo
Py
i
|
|
|
Lt
|
|
|
i
erie
SE
|
ae
eis
ot
This
board’
is
diractly
“connected
to
rg
ari
ihe main
board
with’
solderin:
'
a7
501
e
[UW
g
i

TA-E88/E88B
AEP MODEL
av mp QI
be eee RETO. 6
: fetes
0 120
” O67
woe :
|. 0782" Bg ed
734 : Ete
5.6k ge opie os S Ries,
[ 58) ee Bek : RYO) 2.2k
Q257 | :
39 oe a
ie
[FUSE BOARD]
R?.
C756
+
(POWER) (1 ;
Y
Ly 903
ite]
38
i
i
i
i
i
f
i
H
i
H
3k
ATTENJATOR
904
i ¥
oa
:
3
203
|
—< 103,203, 217, 219> ‘4 ——— Y 901 i
: ee BN 902 | 952 i
Ped HY. ie Seog Sad» Baars us i
R318 4.7k 5 ; i Aa 5
119
2
904,903)
|
RIT
ARK
aS
12)
y
:
ONO = 31V gee en
j oe . {
prone
RAO
ik
pe
: 100s, Sow 2 8 [output t ;
fare
ee
901
Rind fie
06°47 ee me 2 | (OUTPUT | ‘
SO. ‘ i . i
\ s i eie8 (oe é : i
203k 4 @ ee Le i
et eee oe oes “4000/50V,.,- | | 951 i
me “ i per ihee: i
=
BY
Fg
Z
:
i
+ }
=i 4
PNB OTT Q pu i
alae ik ae | f
so 2.5Y : : “
4 es a ——t — . ——— bent ’ ieee
R105
apuld74
ag
BLK
ok
MOH
RED
.
WHT
FRED
j
BLK\__RED}
REO)
ii}
$03
(CLEARY
(RED)
=
!
i
| (15,203,215 ' x = 203
8 4 4
aie feoir
Ussv Easy
t i
ele fig!
See
TAPE? TAPE
|) SOURCE VES
Icey 7
i
{ "low Filter] ON
WOE Bee] | | ke ’
| iapsoct” |: OFF

HEAD AMP POWER
SUPPLY BOARD
[
0952 SIRBIO
BOARD }
D901 SIRBIO
UK MODEL
AEP MODEL
901,903,904
2SCI890_
a902
2SA893
RELAY
DRIVE
AMP
—————_
R907
470k
SCI775
QITIS
2SA872
QIi,14
2SK43
Q7
2SCIOG!
Q3,8,4
2SCI775
QU2
2SK30A
Q50I
1T503
Q502
2Sc926n
Q503,504
2SA893
Q505
2Sc926A
QIBIG
2SCI775
Q12,13
2SA872
QIO
2SA671
Q6,9,5
2SA872
REC
OUT
BUFFER
AMP
Se
it
HEAD
AMP
POWER
SUPPLY
ai
+
@
Igy
D5OI
MVI2N
D502
MVI2N
:
.__
3M
‘
C
R5
Qt
Cti4
Fok
4.gvz
lok
(BD
bY)
ida
a7
os
\H
aavel
Q
509
[RECTIFIER
()
SAVE
(7
KD
V35V
R503
4A
AP
-
Bo
a
Cy,
ls
28v
ee
R10
4
ww
LOR
Bay
98
|_50
28.1
a
V
227i
Cy
ik
CNU7
:
18
a
68
By
be
H
if
de
!
cosa
OUT!
clog
0.015
soi}
_L.cso
029
RIS
HOOK
=
TOp
100k’
-30.8
1,508
TZ35V
BV,
3M
A
Q704
2SCIO61
~—Q705-707
2SCI890
Q708716
2SK30
93
Q701,709
2SK43
Q7I5
2SA67I
one
Tl4
2SA893
0
SUPPLY
S4L
MODE:
aT
'
i
a
a
EC703SR710
BV
|
cies
at
eS
410p
F
33k
0702
~
el
|
‘
~2,
-{yS
|
=!
S|
Yop
Ht
tt
gid
|
al
-3)
|
alo
|
Ov
ty
iz
te
ye
LEA
3
7
ae
REV
STEREO
MONO
S3L
[MONITOR]
SAL
[MODE]
Fy
4
—
4
3
-2
+
R321
=
R
R322
ay
47k
3
22k
100k
Me
soy
|
=
aeaerey,
STEREO
e704
—3V
470p
eS
EEE
Fae
|
ae
ee
a
A
ie
Psa
oo
re
R-CH
Tin
fel
l
|
Ror
7
;
H
RYS0I_
1
RY35I
I
out
ot
Y
“tas!
V,
bog
I
|
emai
y
24
|
om
LA!
YY
|
LOW
FILTER
R371
|
RYo1
Rvy25I
anna
ae
1
4k
Fa;
|
| |
I5Hz
124B/0CT
Me
a
ie
es
a
ees
Kener
ae
|
-
WH
Lav)
3K42
Q406,407
2SA872
0405
2N5118
Q4ll
2SA872
Q408,409
2SCI775
Q410
2N4100
Q4i2
2SCI775.
Q4I3._
2SD669
4
Q414
25B649
|
~
lev
OUTPUT
AMP
|
R45
ye
Oy
Tt
|
RAI
56k
SSL
|
'
:
sie
4\
|
! I
|
D401
oa
ee
OFF
-20
-i0
0
LOUTPUT
LEVEL(dB)~
‘00
6
CNJ9
Se
I
R430
aT
100
CNJIO
“180402 EQBOI-05 0403 ISI555
a
D906 EQAOI-05
obs
0904
ISI555
0903
ISI555
TA-E88/E88B
Note:
@
Component
for
right
channel
have
same
values
as
for
left
channel.
Reference
numbers
are
coded
as
shown
below.
HEAD AMP: from 151
PHONO EQ AMP: from 251
BUFFER AMP: from 351
OUTPUT AMP: from 451
REC
OUT
BUFFER
AMP:
from
551
POWER
SUPPLY:
from
751
CR BOARD: from 851
HEAD
AMP
POWER
SUPPLY
BOARD:
same
as
L-CH
Switches
are
distinguished
by
L
or
R.
(for
example
S5L
or
S5R).
©
All
capacitors
are
in
uF
unless
otherwise
noted.
pF=yuF
5OWV
or
less
are
not
indicated
except
for
electrolytics.
@
All
resistors
are
in
ohms,
%W,
+1%
unless
otherwise
noted.
kQ
=
10002,
MQ
=
1000k2
: B+ bus.
: panel designation.
: adjustment for repair.
: B— bus.
Readings
are
taken
under
no
signal
conditions
with
a VOM (20k9/V).
Transistor
base-emitter
voltages
are
measured
on
the
2.5V range.
©
Voltage
variations
may
be
noted
due
to
normal
pro-
duction tolerances.
@ Switch
-————
FUNCTION
FUNCTION
MONITOR
MODE
PHONO 1
PHONO
SOURCE
STEREO
0dB
OFF
OFF
OUTPUT LEVEL (dB)
POWER
LOW FILTER 15Hz
12dB OCT
CARTRIDGE LOAD
500pF/100k2
Note:
The
components
identifi
ing
and
A\
mark
Y
are
critical
for
safety.
Replace
only
with
part
number
specified.
—~23—

(CR BOARD]
ss0ia C808 390p
=
kt 00K)
C807 270p
4
4
C806 180p
+—t +00)
(805 100p
t—4 [20057]
(804 390p
+-—+ [B00pF]
(803 270
” 4 [a0OH
C802 180p
1 —+ 5005]
100p
OOpF
tel
—$$$$—$—$
CARTRIDGE LOAD.
2 ed a el els elles cal
= =|
=I
a 3
Leap amp! | l LEAD AMP
LL puowo2 PHONO IH
SIL [EUNCTION,
t z C102 0.01 Ql0!
[
QIZIS
250872
QIl,14
2SK43
Q7
2SCIO6!
03,8,4
2SCI775
QL2
2SK30A
QI816
2SCI775
12,3
2SA872
QIO
2SAE7!
06,9,5
2SA872
=I QIOI- 108 2SC1637 QI09-116 2SCI637
ITMAIN BOARD)
R204 LR205
27k 2.7k
Q201,202 2SK97
Q203,204 2SCI775
Q206,207 2SA872 0205 2N5II8
Q208,209 2SCI775 Q210 2N4I00 Q2il 2SCI775 + Q214 2SA899
25.5V
PHONO EQ AMP
R208
9.tk
Q2I2 2SA872 Q213 2SC1904
HEAD AMP POWER
SUPPLY BOARD
HEAD AMP POWER SUPPLY
Q501
1T503
Q502
25¢926A
503,504
2SA893
Q505
259264
REC OUT BUFFER AMP
[RECTIF
B+ psy
R229L R23Q
TOk> [2k
R225
22 ;
—0.4V
$4!
-MONTOR c rE
fle yp - e |
por y a eee ee
~ eles te | Qe | el
| | i | |
Jeo jes | l= | als |
es a aL pene ee
TAEZ— F “TAPE RY SreRED ONO.
veceey
“source! ~ STEREO
SaL [ODE] Sp 9 —1
=
TA-2
R22!
47k -3
Fsae MODE]
Q30! 1T500
Q302,304 2Sci775
Q303 2SK42
BUFFER AMP
oziasy R35)
(yr
Cee
—3V
Q306,307
2Sa872
Q305
2N5II8
Q3Il_
2SC1890
Q308,309 2SC1775
Q3l2 2SA893
Q402,404 2SCI775 Q408,409 2SCI775
0406,407 2SA872 Q405 2N5II8 —Q4I1 2SA872
Q410 2N4100 Q412 2SCI775 Q413. 2SD669
OUTPUT AMP
030! EQBOI-I8 0302 EQBOI-05 _D303 MVIZN 0304 1SI555
Q705~707 2SC1890
SA893 Q701,709 2SK43 Q7I5 2SAE7I 3
=
g8
—{it
cponke) (QL
0
COUTPUT LEVEL(dB)~
0402 EQBOI-05_ _0403_ISI555
Se
ais i
C
too
SV
@ip(254——
(988.
ov
3 - sae
~4av
MAIN BOAR}
R-CH
i6v
ED:
{
|
D203
= lev
G3 -034
1
Cor
wl
20\
LX 219 %
6) CNJ9
1
Qs
0
a) CNJIO
OUTPUT 2. =
RQ!
22
Dt

TA-E88/E88B_
TA-E
| IA“ESS/ESSB
Replacement Semiconductors
SECTION 5
EXPLODED
VIEWS
k
€
2:
oy
E
For
replacement,
use
semiconductors
except
in
(
).
5-1,
03,
4,8
D201,
251
Q16,
18
Q11,
14
Q214,
264:
2SA899
D304,
354
|
aes
0120,
170
Q701,
709
;
:
2SK43-4
(28K43)
0414,
464:
2SA649
@
8
D403,
453
|
*
0203,
204
Q751,
759
8
D903,
904
0208,
209
8
8
an
sihode
0253,
254
i
c
¥
8
:
8¢
0258,
259
{Ee
ou
&
g§ ze
©
0211,
261
.
@$
mR
Be
8
§
@
2
é
:
an
=
SE
>
oe
apg
|:
2SCI775
ia
£68
mating
82
3s
i
=
8
22
@
cs
y
(28C1775)
—qa01-116
Fe
88
88
So
Ss
=
Q309
i
}
:
2SC1367-0
ge
§3
te
8s
aaa
0352,
354
Q151-166
(2801367)
Q301,
351
Bs
sg
3a
ars
D301,
351
e4be
260
a4o1,
41}?
17500
3
ge
Saatael
}
:
EQB01-18
;
0502,
505
401,
451
arg)
3e
Renee
0402,
404
0552,
555
}
:
2SC926A
0501,551
—::1T503
:
:
EQB01-05
0408,
409
QB=—-
sth
a
0412,
462
Py
si
a
701,781)
eqgor-12z
0452,
454
:
ee
@
iets
D702,752
)
..
0458,
459
4
8
g
\
D906
:
EQB01-05
(EQA01-05)
.
bi
be
g
8
:
N&
&
cathode
GI
G2
ys
3S
2
oe
ke
$s
2
®
The
pair
transistors
of
each
differentical
amplifier
at
the
Power
supply
section
must
be
replaced
at
the
same
time.
(Q15
and
17,
Q65
and
67,
Q16
and
18,
Q66
and
68,
0701
and
703,
Q752
and
753,
Q710
and
711,
Q760
and
761)
‘a,
a121
mt
0303,
353
}
:
28K42-3
j
,
:
:
-3
(28K42
~~
Fos
0213,
263
:
28C1904
403,
453
(
)
/
@
\
8
0413,463
:
2SD669
Se
eS
re
*
sg
es
og
D303,
353
Q5,
6,
9,
12,
13
(Pe
@.
x2
@
w8
D501,551
|:
MV12N
Q15,
17
r
z
Be
x2
D502,
552
117-119
{E)
;
5
$3
3§
@
sae
0167-169
E
Rs
38
:
0206,
207,
212
8
3
28
a
0256,
257,
262
|
:
2SA872-D
ECB
making
site
0311,
361
=o
v4
8
x
9
Q306,
307
(2SA872)
Q710,
711
Ty
38
0356,
357
Q760,
761
y
~~,
0406,
407,
411
0201,
251
:
2SK97-01(28K97)
9705-707
:
2SC926A
8
Q456,
457,
461
Q202,
252
:
2SK97
Q755—757
3
x
6)
ne
901,
903
@s
©
xy
901,951)
co
a904
2sc1
Ts
:
DE0z,
S62
eo
oe
}
:
28C1061
=
ida
$8
/
§
©
®
Q704,754
{
°
Di
be
Ras
By
sy
9
c c
B38
9
8
%
Ny
“Ep
ral
EY
+8
"
gs
se
OMS
I
°
:
‘
:
—
segs
2
ma
+
8
tam
9
c
Fé,
feos
@
i)
—iK
xe
2,
0205,
255
fe]
8
Be
Q305,
355
:
2N5118
0312,
362
a8
2s
RQ
/\
Q405,
455
.
aN
5s
Li
D2001
:
SLP114A
0503,
504
sé
36
Lf
0553,
554
I3
@
@
\
Pe
:
Q10
:
2SA671
ack
el
Q702,703
|
:
2SA639S
8
8
ee
2
3
ad
Q752,
753
(2SA893)
8
8
Sec.
8
pare
ce
=.
0712-714
3
Be
3
3
83
a
cathode
; €
0762-764
5S
Re
*
3
5
s
°
al
ee
ag02
Sey
:
EL
E2
2)
E
3
=
8
ee
Q1,2
geo
F
8.
e
gey
®
=
Q708,
716
>}
:
2SK30A
(Ky.
B§
ge"
SSy
-5
:
Q758,
766
Q210,
260
£
so
aS0=5_
@2
.
0310,
260
|
:
2N4100
:
38
oss
3
8-8
0410,
460
ey
<
esse
feu?
D
Sere
:
2
£§
ae
:
ressesed
i]
BoFtOos
o
ct
1
22o4,%
Bs
:
ESS"
SSB
GD
we
®=>e7
S
@
Se
s2sgseSlse
Note:
ED«
2
e e
e
=a
~25—

Note:
e
4854-723.
Note:
Lamp,
POWER
Py
ce
A
GIN
Lage
iain
ae
®
poe
a 534-276 A eee M3 x3 4-854-722.00 ©)
@
Items
with
no
part
number
and/or
no
.
ieee
1:552-295-12
®
:
ete
Detent
(A)
description
are
not
stocked because
they
/
FN
Switch,
rotary;
POWER
(S6)
piste
(8),
seletne!
te
are
seldom
required
for
routine
service.
Supplied
with
S6
PSW3
x
6
@
All
screws
are
Phillips
(cross
recess)
type
6
unless
otherwise
noted.
3-831-441-XX
@
(—) = slotted head Cushion, sheet
©
Circled
letters
(
@)
to
@
)
are
applicable
X-4852-901-0 ©
Knob Ass‘y,
POWER
Note:
The
components
identified
by
shading
and
A\
mark
4.854-744-01 @) 4-854-746-00 @)
Escutcheon (red), jack Emblem
“LS
4-854-744-11 @
4-847-802-00 @ Escutcheon (white), jack
Screw, case
3-831-441-XX ©
Sheet (t0.5) 1-506-113-00
oe Shorting Plug
4-854-744-01
Escutcheon (red), jack
4-854-767-00 (©)
Case
-854-741-01 @)
Cap, PJ cover
4-847-802-00 @
Screw, case
4-854-733-00 @
ane 9-911-815-02@
Cushion (t5)
4-854-135-00 ©
4.854-764-00
@
Plate,
vibration
absorbor
Case, panel ra
Lees
Holder, circuit board
SM3IA G3001dx3
S NOILD3S
4-854-766-00 ©)
Plate, bottom
4-854-733-00 @
Spacer
3-703-108-21 @
Items
with
no
part
number
and/or
no
3-703-108-21
@
@
&
BVv3x6
description
are
not
stocked
because
they
BV3x6
XS
are
seldom
required
for
routine
service.
Y
All
screws
are
Phillips
(cross
recess)
type
3
&
4852-903.
unless
otherwise
noted.
aoe
©
=
Bue
Foray”
‘Or
y
x
(—)
=
slotted
head
:
;
3-703-107-11
@
Circled
letters
(
®
to
@
)
are
applicable
P3x8
to European models only.
are
critical
for
safety.
Replace
only
with
part
number
4-854-755-00
@
speci
ied
Collar
ND
9883/883-VL 9883/883-VL
to European models only.
Bracket
PSW3
x
6
Sipplied
with
detent
penta
®
Be,
3-701-444-21
ge
Shaft
(A)
Washer,
plastic
6mm
dia.
:
PSW3x
6
SayZ
Me
YW
Plate
(B),
adjustment
i
Supplied with detent PW3 x 6
Bearing Ass‘y (B), control shaft
< <>
fe eee y? :
B:)
Bearing
Ass‘y
(A),
control
shaft
2
3-701-444.21
@)
g
Shaft
(8)
jaring
y
(A),
con
@
Plate
(B),
connection
Washer, plastic 6mm dia. E
X-4854-710-2 (TA-E88B) @)
X-4854-710-1 (TA-E88) @)
Panel Ass’y, including
parts marked 41 —5
5
e
, eo
Plate (A), connection
X-4854-709-1 1)
Lever Knob Ass’y, FUNCTION
4-854-734-00
Escutcheon, lever
1-536-401-XX @)
Lug, 1L2
3-701-510-00
@
Holder,
lug
M4x4
4-854-740-00 @
Tube, rubber
X-4854-705-0 ©) !
Knob Ass‘y,
ATTENUATOR
eae,
4-854-748-00
©)
3-701-510-00
@
Guide,
light
path
M4x4
3-701-510-00 ©
ie
Krab
Asty.
OUP
4-854-738-00
Knob
Ass‘y,
OUTPUT
LEVEL,
Zz
\)
4.854.738
BALANCE,
MODE,
MONITOR
ip
4-854-743-00
X-4854-704-0
®
Knob Ass’y, FUNCTION eee 10-00 @ Spring
M4x4 Plate (A), connection

Note:
The
components
identified
by
shading
and
/\
mark
are
critical
for
safety.
Replace
only
with
part
number
specified.
A
1-442-958-00 (P)
Transformer, power {T1, 2}
ny
BV3 x oe
Printed Circuit
Board, rectifier
Chassis Ass’y,
power supply block
re
1.226-148-00 )
ATTENUATOR
Shaft (8), link
1-662-291-00
Switch, OUTPUT LEVEL (S5)
7-226-147-00 ©)
Resistor,
3k9-z
variable;
BA
LANCE
AS) ; —
<5 &
cd BV3 x6
Resistor,
3kQ-B
variable;
BV2x6
Plate, segment
4-854-774-00
Ornamental Plate, rear e
BV3x6
3-703-108-11 @
BV3 x6
4-854-721-00
Spindle (B), connection
;
3-418-709-00
@
;
Pl
Label,
ground
Supplied
j
terminal
with
switch
Rod,
link
“OX
4-854-721-00
Spindle (B), connection,
Supplied with |
switch
ps3 |
ae
1-532-078-00 8)
Fuse, 1AT ow
(F1)
e
3
1 ee Pe)
YW +)
A
OD @
4854-74700 |@
Pin, connection
x6 K
OS
>~
) ~
Heat Sink
PS3 x6
Holder, circuit board
Spacer
2 BV3
x6
w)
-
L
Label fuse
Printed Circuit
Board, fuse
1-509-546-00
Connector, 3p AC IN (CNJ12)
2.065-330-11 @
1-552-290-00
Switch, FUNCTION (ST)
Note:
@ Items with no part number and/or no
description are not stocked because they
are seldom required for routine service.
e All screws are Phillips (cross recess) type
unless otherwise noted.
(—) = slotted head
Circled letters ( @ to @ ) are applicable
to European models only.
‘es
©
4-854-784-00 (TA-E88B, UK model}
4-854-785-00 (TA-E88B, AEP model) i)
4-854-768-00 (TA-E88) @)
3-701-361-17
® Label, specification
Label, ground caution; UK
(UK model)
4-854-772-00 ©
Plate, rear
1-§52-292-00 (R)
Switch, rotary;
CARTRIDGE LOAD
(S801, 851)
4-854-715-00 (8)
Terminal (A} ®
4-854-716-00
Holder, CR circuit board Terminal (B)
Printed Circuit Board,
[—-- 4-854-717-00 @
HA power supply @
-831-441-XX
383 ® Terminal (C}
Cushion (t0.5)
db ae 23
p 2.065-330-11
3.701-505-00 @) ‘ tay) 74 Spacer |
M3x
3
—-S
|
oN
P
o
F Switch, MODE (84) SS * 2 ee panies Clrcul
;
witch,
>
,
rinted
Circuit
X-4854-708-0 ©) yS J 3 Ee &, Board, CR
Joint
(B)
Ass’y
S&S»
LS
Be
FL
©
BVIT3
x6
Cs
;
e : BIA 4-854-750-00 @~
j 2.832.002-00
3-701-432-00
@
1-552.287.00
@)
e
AL,
Cushion
@
Nut, 9mm dia. 1.615-284-00 €)
Bracket, variable resistor Relay, reed
2.065-330-11 @)
Spacer
@ X-4859-706-0 e
Joint (A) Ass’y
Switch, MONITOR (S3)
1-552-288-00 @)
Switch, FUNCTION (S2)
3-701-505-00 ©
M3x3
Shaft (D), fink
Pin, MCM connector
Bushing
Lug 3mm dia.
Side Plate (R)
1-552-225.00 ©
Switch, pushbutton;
LOW FILTER {S7)
9883/883-V1 |

TA-E88/E88B
Ref. No.
Ql, 2
=> Q3,4
=> Q5,6
Q7
=> Q8
=> Q9
Q10
> Qil
=> Q12,13
=> Q14
Q15,17
=> Q16, 18
= Q101-106
=> Q151-166
=> Q117-119
=> Q167-169
=> Q120, 170
Q121,171
=> Q201, 251
Q202, 252
> Q203, 253
Q204, 254
Q205, 255
=> Q206, 256
Q207, 257
=> Q208, 258
=> Q209, 259
Q210, 260
=> Q211, 261
=> Q212, 262
Q213, 263
Q214, 264
Q301, 351
=> Q302, 352
=> Q303, 353
=> Q304, 354
Q305, 355
=> Q306, 356
=> Q307, 357
Part No.
Description
SEMICONDUCTORS
Transistors
8-729-203-04
8-729-377-58
8-729-387-27
8-729-316-12
8-729-377-58
8-729-387-27
8-729-317-12
8-723-304-00
8-729-387-27
8-723-304-00
8-729-387-27
8-729-377-58
) 8-761-700-00
) 8-729-387-27
8-729-377-58
8-729-990-43
8-765-342-31
8-765-342-10
8-729-377-58
8-729-951-18
8-729-387-27
) 8-729-377-58
8-729-941-00
8-729-377-58
8-729-387-28
8-729-990-43
8-729-989-93
8-729-905-00
8-729-377-58
8-727-313-00
8-729-377-58
8-729-95 1-18
) 8-729-387-27
2SK30A
® 28C1775-E
2$A872-D
® 28C1061
2SC1775-E
2SA872-D
© 28A671
© 2SK434
2SA872-D
© 28K43-4
2SA872-D
28C1775-E
28C1637-0
® 2SA872-D
@® 28C1775-E
2S8C1904
© 28K97-01
©) 28K97
2SC1775-E
© 2N5118
2SA872-D
2SC1775-E
© 2N4100
2SC1775-E
2SA872-D
2S8C1904
2SA899
@ 17500
28C1775-E
© 28K42-3
2SC1775-E
© 2N5118
@® 2SA872-D
© =>: Due to standardization, interchangeable replacements
may be substituted for parts specified in the diagrams.
SECTION 6
ELECTRICAL PARTS LIST
© Circled letters { @) to @ ) are applicable to European
“26
models only.
Ref. No.
=> Q308, 358
=> Q309, 359
Q310, 360
=> Q311, 361
=> Q312, 362
Q401, 451
=> Q402, 452
=> Q403, 453
=> Q404, 454
Q405, 455
=> Q406, 456
= Q407, 457
=> Q408, 458
= Q409, 459
Q410, 460
> Q411, 461
> Q412, 462
Q413, 463
Q414, 464
Q501, 551
Q502, 552
=> Q503, 553
=> Q504, 554
Q505, 555
=> Q701, 751
=> Q702, 752
=> Q703, 753
Q704, 754
= Q705—707
> Q755-757
Q708, 758
=> Q709, 759
= Q710, 760
=> Q711, 761
= Q712-714
Q716, 766
= Q762-—764
=> Q901
=> Q902
=> Q903, 904
Part No.
8-729-941-00
8-720-950-03
8-729-163-93
8-729-905-00
8-729-377-58
8-727-313-00
8-729-377-58
8-729-95 1-18
8-729-387-27
8-729-377-58
8-729-941-00
8-729-387-28
8-729-377-58
8-729-366-92
8-729-364-92
8-729-905-03
8-720-950-03
8-729-163-93
8-720-950-03
8-723-304-00
8-729-163-93
8-729-316-12
8-720-95 0-03
8-729-203-04
8-723-304-00
8-720-950-03
8-729-163-93
8-729-203-04
8-729-163-93
8-720-950-03
8-729-163-93
8-720-950-03
Description
) 8-729-377-58 (®) 28C1775-E
@© 2N4100
© 28C926A
© 28A639S
@ 17500
@® 28C1775-E
© 28K42-3
2SC1775-E
© 2N5118
2SA872-D
28C1775-E
© 2NA4100
2SA872-D
28C1775-E
© 2sD669
© 28B649
® 17503
© 28C926A
© 28A639S
© 2SC926A
© 28K43-4
© 2846398
@® 28C1061
© 28C926A
2SK30A
© 2S8k43-4
© 2SC926A
© 28A639S
2SK30A
© 2SA639S
© 28C926A
© 2846398
© 2SC926A