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  9. Sony TC-260 User manual

Sony TC-260 User manual

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Serial
No.
29,001
and
after
Specifications
Power
Requirement:
Outputs
:
TC-260
Tape
Speeds:
Frequency
Response:
Signal-to-Noise
Ratio:
Flutter
and
ow:
Bias
Frequency:
Level
Indication:
Inputs
:
eight:
Dimensions
:
Trapslstors
:
SONY
SERVICING
GUIDE
100,
110,
117,
125,
220
or
240
volts
(Voltage
selector
provided
in
the
set)
C
50
Hz
or
60
Hz
(Convertible,
see
page
8)
55
watts
Instantaeous
selection
7%
ips
or
3?.j.
ips
(
19
or
9.5cm/s)
30-18,000
Hz
at
1%
ips
±3
dB
50-15,000
Hz
at
7X
ips
30-13,000
Hz
at
3M
ips
Better
than
50
dB
Less
than
0.19%
at
l'/z
ips
Less
than
0.25%
at
3^
ips
pprox.
55
Kc
Two
VU
Meters
(
calibrated
to
0
dB
at
12
dB
below
saturation
)
Microphone
inputs
(
low
impedance
)
uxiliary
inputs
(
high
impedance
)
Line
outputs
(
low
impedance
)
uxiliary
Record/Playback
Connector
2SC401
(X8),
2SC4O2
(x8),
2SC318
(X2),
2SD28
(x6)
pprox.
34
lbs.
(15.5
Kg)
21
*•/«/
Wx
15
’
73/
D
x
7
7
/
8
"
H
(541
WX392
DX200
H
mm)
Pre- mplifier
l
(Pre
m
plifier
Circuit
Board)
©
B
X1O3
2SC402
REC
Slot
6
Tioi
X
jr
D
l§l
1T22
PL Y
REC
Equalizer
Control
(PP30-4202)
CNJ-i
X)
EH101
(
EF
18-2902
Pre- mp
Circuit
Board
(Right)
EH201
Left)
©B
S7
C
100
—
240V
I
Main
mplifier
I
Tone
Control
Circui
Board
i
R51
1
20kQ
<
SP501
NF
Volume
B SS
X602
2SC402
*
.
R602
-1
OkQ
J601
1
Ron
20kU
NF
SP601
1
T701
Mam
mplifier
Circuit
Board
CNP]
<
Power
Supply
Filter
Circuit
Board
2
TC-26O
Block
Diagram
I
TREBLE
n
'
I
I
Fr
MEioi
(7\VU
Meter
J102
UX
IN
Rso?
I
10kQ:
XiOl
2SC402
X502
2SC402
X102
2SC401
X6O3
2SC402
X506.507
2SD28
X101
2SC401
S101-1
REC
ZS
‘
I-
1
[
—
OPL Y
(
I
I
.
R115
A
10kQ
Playback
Level
Control
X104
2SC318
X5O4.5O5
2SC401
X6O6
.6O7
!
2SD28
II
11
II
11
J701
3
Binaural
Monitor
O
5
3
0
Stereo/Monaural
Record
Switch
n
_
2SC401
R138
±
lOkfi
Rec
Level
'Control
R122
5kQ
T601
3
X701
2SD28
i
M
®
B
-
h
D3O1.3O2
5GD
:
□El
!
___
P7D2
5GD
(Same
as
X503
,
2SC402
l
'
X601
2SC402
1
S6-1-.
EFl
8-2902
R5I3
55kQ
OSC
Circu
i
t
Board
J
---------------
X301
'
d
'
2SD28
T
I
Jl°
3
©LINE
T
0UT
i
“
Hi
Ti
1
11
r
iiij
o
o
o
j
>
oi
nc
MICIN[[_
____
i
RPH
101
37)
Pinch
Roller
( 31jReel
Cap
( ^Cabinei
Foot( )
2)
Control
Knob
.MtZOl)
VU
Meter
(Fig.
1
)
Rewind
I
diet
Rewind
Idler
Take
up
Reel
Table
Deck
Fuse
noIder
Supply
Reel
Table
Motor
Pulley
Counter
Belt
Pulley
Tape
Index
Counter
A32
Take
up
Idler
u
Brake
Block
VU
Meter
Function
Selector
Cam
REC
Volume
Control
Head
Deck
MIC
Jack
Pilot
Lamp
Recording
Botton
Pincn
Lever
Capstan
Shatt
(Fig.
2)
3
—
TC-26O
[Cabinet
Top
View]
[Chassis-
Top
View]
Control
Panel
Volume
Control
Knob(
B)
Rec'P.b
Head
(PP304202N'
Volume
Control
Knob( )
Erase
Head
(EF18-2902H)
(M
ekh
)
VU
Meter
Power
Push
Button
( 36)
Cabinet
—
--------
(gspejd
Selector
( fUReel
Panel
------
»
'--.Function
"33/Selector
Knob
RF3
<
8
Screw
•
Power
ON/OFF
Switch
Motor
IC-624
Power
Transformer
UX
2P
Mini
Jack
Voltage
daptor
CNJi
LINE
2P
Mini
Jack
(Fig.
3)
8P
Connector
(CNP1
‘
c
PB1
X
i
I
"37
Power
Transformer
(
T
701
Volume
Control
c
o
(Fig.
4)
—
4
—
TC-26O
Chassis
Bottom
View
Main
Amplifier-Block
Bottom
View
REC,
Volume
Control
REC.
Volume
Contrl
MP.
Capacitor
1.5/tF
8P
Connector
(
Female
Printed
Circuit
Board
(
Pre
■
mplifier
Printed
Circuit
Board
(OSC
and
Power
Printed
C
rcuit
Board
Power
Supply
Rec
P
b
Connector
Printed
Circuit
Board
Tone
Control
)
Printed
Circuit
Board
Mam
mplifier
7
-
njiil
1
17
J
Rotary
Switch
Binaural
Monitor
Jack
pi
---
^PB?)
-
—
@
(*^(C)
2S
D28
ST
Rfill)
T°
ne
Control
(Bass
Rj'jj)
Tone
Control
Treble
_____
X
(
4
)
(
5
)
Note
:
.©RF4X30
Cabinet
Washer
( 30)
Speed
Selector
knob
6
I
(As)
Reel
Panel
n
2
Handle
Washer
Z7ffiB5X
50
(Fig.
5)
(Fig.
6)
5
TC-26O
Removal
of
Cabinet
Removal
of
Reel
Panel
(3)
(4
>
(1)
(2
1
(1)
(2)
(3)
Screw
A
(jTjjvolume
Control
knob
Turn
up
side
down
the
recorder
on
a
soft
pad.
Remove
the
five
Screws
(®RF4x30
marked
in
Fig.
5.).
five
Cabinet
Washers,
two
Screws
(®B5x50
marked
in
Fig.
5.)
and
two
Handle
Washers
as
shown
in
Fig.
5.
Lift
up
the
Cabinet
gently.
Disconnect
the
8P
Connector
(Male)
on
the
Main
mplifier
side
from
the
8P
Connector
(Female)
side.
e
--------
8P
Connector
|
(Female)
8P
Connector(
Male)
one
Screw
(@T
3x6
marked
▼
in
Fig.
on
the
Pre- mplifier
( ?9)
Head
Cover
< )
(£0)Hedd
Cover(B)
7)
Pinch
Rolleriol
( 33)
Function
Selectorknob
Remove
the
two
Head
Covers.
Remove
the
Function
Selector
Knob,
Speed
Selector
Knob
and
Pinch
Roller
by
loosening
the
respective
Set
Screws.
Remove
the
three
Screws
|©B3x6
marked
in
Fig.
6.),
three
Washers
30,
6.)
and
one
Washer
30
as
shown
in
Fig.
6.
Open
the
Cover
for
Recording
Box
and
pull
out
two
Volume
Control
Knobs.
Note:
If
the
Volume
Control
Knobs
are
too
tight
to
remove,
try
to
lift
Reel
Panel
up
slightly
and
the
Volume
Control
Knobs
will
come
up
for
easy
removal.
Now
Reel
Panel
can
be
removed
and
main
mechanism
can
be
checked.
When
re-assemblying
the
Reel
Panel,
the
Volume
Control
Shafts
must
be
located
just
at
the
center
of
the
respective
holes.
1
1)
11
&>
o'
fl
0
ir
e>
O
Screw
©RF3
X
€■
'Washer
3^
(Fig.
7)
(Fig.
8)
When
it
is
necessary
to
remove
the
Circuit
Boards,
proceed
shown
in
Fig.
3)
four
3(4
Spring
Washers
and
four
3(4
Washers.
(
1
I
—
6
—
TC-26O
Removal
of
Ornamental
Panel
for
mplifier
Removal
of
Circuit
Board
(
2
)
(
3
)
(4)
(
5
)
Printed
Circuit
Boards
can
be
checked
without
dis-assembled,
as
follows.
(
1
)
(
2
)
(
1
)
(
2
)
(
3
)
e
o
.-
©
\©
Spring
Washer
30
‘
A3)
Volume
.
COnTrol
Knob
Circuit
Board
for
Tone
Control
Section
Remove
the
three
Holding
Nuts
for
Potentiometer
of
Transistorized
Circuit
and
remove
the
Circuit
Board
for
Tone
Control,
taking
care
not
to
cut
the
connected
Leads.
Ornamental
Washer
(44)
Nylon
SB
K
A
%
<ft>
■
k
A
J
V
PF
4x2
5
4
?
Washer
—
-
—
®
etj
<
to
1
’
A
Circuit
Board
for
Pre-Amqlifier
Section
Remove
the
four
Screws
<5?RF3x8
(marked
with
Remove
the
two
Helical
Springs,
which
pull
slide
switch
(Rec./p.b.)
Knobs
from
the
Switching
Plate.
Raise
the
Circuit
Board
gently,
taking
care
not
to
cut
the
attached
leads.
Remove
the
Volume
Control
Knob
for
right
channel,
the
Volume
Control
Knob
for
left
channel
and
the
other
Control
Knobs
(Bass,
Treble,
Speaker
ON/OFF)
as
shown
in
Fig.
7.
Remove
four
Screws
(@RF4x25
marked
with
V
in
Fig.
7),
four
Ornamental
Washers
and
four
Nylon
Washers.
Lift
up
the
Main
mplifier
Block
gently.
Disconnect
the
8P
Connector
(Male)
on
the
Main
mplifier
side
from
8P
Connector
(Female)
on
the
Pre- mplifier
side.
Disconnect
the
P.V.C.
Wires
from
the
Main
mplifier
side
at
the
Speaker
Jack.
©
(§)contn>l
Knob
/
©
__
(1
©
k
1
r
’
’
Circuit
Board
for
Power
Supply
and
OSC
Section
Take
out
two
Holding
Screws
©RK3x6
marked
in
Fig.
8.
Slide
the
Printed
Circuit
Board
for
Power
Supply
and
OSC
section
rightwards
and
remove
it
from
the
left
Bracket
as
shown
in
Fig.
8.
(1)
set
Screws
for
Electrolytic
(
2
)
in
Fig.
12),
one
spring
’
Washer
3(5
and
one
Washer
3(5,
taking
care
'
3
)

(tj
RF
J
x
6
:r.
RF
3
x
3
ll

T;
B
3
x
6
(Fig.
9)
(Fig.
10)
Printed
Circuit
Printed
Circuit
Board
for
Pre-Amplifier
Part
No.
Serial
No.
Remarks
1-538-215-14
Sets
up
to
29,000
ll
transistors
are
changed
from
Germanium
to
Silicon.
1-538-433-11
29,001
and
after
37,501
and
after
Pattern
of
Circuit
board
is
changed.
1-538-433-12
1-538-433-14
No
check
Transistor
for
Bias
Oscillator
Serial
No.
Bias
OSC
Trans.
Part
No.
Transistor
Name
Q
’
ty
Sets
up
to
29,000
1-433-046-
2SB383
2
29,001
and
after
2SD128
2
I
1-433-081-
39,501
and
after
2
2SD72
59,401
and
after
1-433-106-
2SD28-3
1
—
7
—
TC-26O
Pnnted
Circini
Beard
for
Poner
Suopb
Filter
Printed
Circuit
Board
for
Mam
mp
of
Channel
-
1
Printed
Circuit
Board
lor
Ma
n
mp
of
Channel
2
Circuit
Board
for
Power
Supply
Filter
Section
Renmove
the
Printed
Circuit
Board
for
Power
Supply
Filter
by
loosening
the
respective
Capacitor
Mounting.
Remove
the
one
Screw
((+)RF3x8
marked
not
to
cut
the
connected
Leads.
Lift
up
Printed
Circuit
Board
for
Power
Supply
Filter
Section.
Soldering
positions
of
C
lJ0
(no)
are
changed.
Lead
(No.
29)
for
soldering
to
R
30
3
(68
Q)
is
soldered
to
SW
T
.
f
O
Spring
Washer
Wasner
3/
Circuit
Board
for
Main
Amplifier
Section
(
1
)
Remove
the
two
Holding
Screws
(ffiRF
3X6
marked

in
Fig.
9
),
two
Holding
Screws
(®B3x6
marked

in
Fig.
9
)
and
remove
the
Circuit
Boards
for
Main
mplifier
of
Channel
1
and
Channel
2,
taking
care
not
to
cut
the
connected
Leads.
50
c/
s
For
For
60
c/
s
Connected
Connection
between
terminals
of
Disconnected
I.
(2uF)
(
l.5uF)
the
Metalized
Paper
Capacitor(MP.)
2.
Pinch
Roller
3.
Capstan
Green
Green
0
©
(Fig
11)
on
the
Board
with
three
Wood
Screws,
|®B3x6|
and
B
i$e
Plate
i-cr,
y
140mm
(Fig.
12)
—
8
—
TC-26O
Modifica11on
to
Different
Power
Line
Frequency
To
Install
the
Unit
to
Other
Equipment
e
(
1
)
(
2
)
(
3
)
0-027-470-01
(Red)
0-027
-
483-05
(
Red
)
0-027-483-06
(White)
0-027-477-01
(White)
60
c
/
s
Set
Screw
V
50
c
/
s
When
it
is
desired
to
install
unit
to
other
equipment,
proceed
as
follows
;
Remove
the
Reel
Panel
refering
to
Fig.
6.
Remove
the
Cabinet
refering
to
Fig.
5.
Install
the
unit
in
the
opening
(340x260mm,
13.4*
X
10.2*)
Rack
Mounting
Brackets
as
shown
in
Fig.
12.
Bracket
tor
Rack
Mount,
—
.
■
>
i
i
\
260rntn
The
alignment
is
to
be
performed
at
Connect
an
100
KQ
load
se
Head
Core
and
Rec./P.B.
Head
Core
and
upper
edge
of
the
tape
by
turning
the
io
I
3
)
i
djusting
Sere*
▲
|0
05mm
I
5
(Fig.
14)
(Fig.
13)
—
----
Bias
Current
RPH
I
IkQ
■
(Fig.
15)
9
—
TC-26O
djustment
Procedure
I
(
i
)
(
2
)
(
1
)
(
2
)
(
1
)
(
2
)
(
3
)
(
4
)
'
-Cold
Side
(in
REC
mode)
-RIGHT
LEFT
Tape
Guide
:
to
oe
adtusted)
djusting
Screw
la
v
■
...
@REG
PS
Head
....LI.
----
-
Azimuth
Alignment
Playback
a
10
Kc
signal
recorded
on
the
first
section
of
the
SONY
alignment
tape
"N-19-F1".
Turn
the
azimuth
alignment
screw
located
on
the
right
side
of
playback
Head
to
obtain
the
maximum
recording
on
the
VTVM.
Note
:
zimutn
lignment
Screw
t
RF
2
6x6
-1
~
■Q+
□KM
I
a
(TJJ
Head
djusting
Plat*
The
Rec./P.B.
Head
Mounting
Plate
must
always
be
kept
1.6
mm
high
from
the
Head
Deck
as
shown
in
Fig.
15
which
is
set
in
the
factory.
s
the
correct
positioning
is
very
difficult
without
jig,
take
care
not-to
turn
the
adjustment
screws,
marked
with
shown
in
Fig.
14
even
in
replacing
the
Rec./P.B.
Head.
Tape
Guide
(tH)E,
3se
Head
@REC
PB
Head
(To
de
aaiuste-d)
-^
\
(Not
il
0,05mm
f
Black-
j:
(v?v) pprox.
1.2V
a
tape
speed
of
7-1/2
ips
unless
otherwise
specified.
resistor
in
parallel
with
the
VTVM
terminals
and
connect
the
VTVM
to
LINE
OUT
Jack.
Recording
Bias
Adjustment
Unsolder
the
ground
lead
(s)
(Violet
for
Right
and
Black
for
Left)
on
the
terminal
of
Rec./P.B.
Head.
Insert
a
VTVM
and
a
1
KQ
resistor
in
parallel
between
the
Rec./P.B.
Head
and
the
unsoldered
lead
(See
Fig.
15).
Place
the
recorder
in
record
mode.
djust
Trimmer
Capacitor
(s)
(Right
...
C
J0
3,
Left
...
C
30
<)
shown
on
page
18
to
obtain
1.2V
reading
on
the
VTVM.
Elevation
Alignment
The
exact
vertical
positionings
of
the
Head
are
adjusted
at
the
factory
and
should
never
need
readjustment.
However,
when
replacing
Head
or
Tape
Guide,
height
of
the
replaced
part
in
relation
to
the
tape
be
checked
as
follows;
Head
Deck
Thread
a
tape.
lign
the
upper
edges
of
the
E
Tape
Guide
located
on
the
left
side
of
the
Erase
Head.
Turn
the
Tape
Guide
clockwise
by
approximately
30°
from
the
position
obtained
in
the
preceding
process,
so
that
the
upper
edge
of
the
tape
is
approximately
0.05
mm
lower
than
that
of
the
Erase
Head
Core.
'or
(Fig.
16
)
dBs(OdBs=O.
775V)
50
40
30
20
0
10
1
IdBs
0
-10
1
0)
-20
-25dBs
-30
X502 X503
X504.505
X5O6.5O7
Rs
Rs
:
2.2K
-10-
TC-26O
Main
mplifier
Level
Diagram
(1)
1
2
1
(3
>
-
14
5dBs
(5)
-
11
dBs
-21dBs
Equalizer
Adjustment
(
1
)
Playback
the
3rd
section
(700
c
s,
-22
dBs)
and
the
4th
section
(10
Kc
s.
22
dBs)
of
the
lignment
Tape
"
N-19
F1
’
’
and
the
potentiometer
R,
!:
(R„.)
shown
in
Fig.
16
to
obtain
the
same
readings
on
the
VTVM
for
both
the
3rd
and
the
4th
sections
of
the
alignment
Tape.
Meter
Calibration
Playback
second
section
of
the
alignment
Tape
"N-19-F1
”
(700
c/s,
-12
dBs).
djust
the
potentiometer
R,
S1
(R;u)
shown
in
Fig.
16
so
that
the
VTVM
indicates
0
dBs
(0.775
V).
djust
the
potentiometer
R,
Jt
(R
:31
)
shown
in
Fig.
16
so
that
the
Level
Meters
reads
0
VU
(100%).
NF
I
(21dB)-
‘
I
1
/
Bias
Trap
Adjustment
(
1
)
Place
the
recorder
in
record
mode
without
loading
a
Tape.
(
2
)
djust
the
Trap
Coil
L
103
(L
;03
)
shown
on
page
21
for
minimum
reading
on
the
VTVM.
I
NF
I
(35dB)
i
I
1
I
_________
I.
I
I.
_<D
—
IdB
\
<2)
----------
7
dBs
1