Sony TC-260 User manual

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

6
d
20
i2 '
<6Z9>-
■+14.3dBs-
'Ll
10
0
©
Hack
&
Yellow
jJiFM
-10
0
Red
-20
6
o
-30
Black
-40
Violet
-50
II t - o ,
-60
-70
2SC401
1
f
r
— Components Side —
1
dBs(OdBs = O.775V)
■R52HT626)/
f
20
3
o
10
6
o ------
-10
IO u F
6wv
-20
-30
-40
-41.2dBs
-50
't
-56.8dBs
©
-60
-58.4dBs
63i<
-11 -
- 12 -
TC-26O
TC-26O
Mounting Diagram,
Recording Level Diagram
Playback Level Diagram
j ____
I '2'
XSW60+)
2SC401
<Z>
+ 0.1 dBs
<B>
OdBs
-® ___
— 31.5dBs
---- ®~
-14dBs
dBs(OdBs = 0.775V)
30 --------------------
Recording
Level Control
® +0.5dBs
IQOkS Load
LINE
OUTPUT
Rec/P.B
Head
S soksod
Red (White)
RS2K621)
■5. 6 k
---- E -------
C5I (6W 50ftuF25WV
Tsoi
(601)
To Printed Circuit Board for
Power Supply Filter
To Jsoi
To XS07 ( XS07)
2SD28
Main Amplifier Section
— Conductor Side —
■Rsntsn)
LT
Csw
50Qu
614)
: 25WV
iebth
30uF 251
,621)
S.6K
~<2>
MIC IN
Rsio
(619)
TW
0 l O022> j F
g
To Printed Circuit Board
for Power Supply Filter
X
\Csi1(6H)
© — ® —
— 64.6dBs
NF
(5dB) jl
CO
UX IN
"©lldBs
NF
(20 2dB) j /
-32.8dBs|
20.5dB^
-28.lt
dBs
/
X Q
I61B1 Ij
I.6K1 ~ -
"rOTi.iF
t.
T50K601) '
T o X506(606) 2SD28
o © ® .
1 5 2
22©
-O
<7 (toy
■ - N J- . 1
(31.5UB) ;
Csmeinj
■GTW;
MIC INPUT
- F
, j 05)
Rs?sis ~s> 11QQ_
D
UX INPUT
yMuriSW"'
- — g) —
] -54.5dBs
-61 dBs
6510(610)
15WV
To Print ed,Circjijt^ j
Board Pre- mplifier
____ ©
Green
.wl
. . Csisifai) (©)(sh)
WW3) _
2 O

Main mplifier
X501 2SC402
X502 2SC402
X503 2SC402
Q
S501
55R' 1
T501
7
R533
1/2W
o
Ceil X
C goi
O
S601
-Q-
I
C bio Cei2
R sob .
R628
220 ft
X 6 oi 2SC402
X602 2SC402
X701 2SD28
X606.60? 2SD28
Xeo3 2SC402 X604.605 2SC401
— 14 —
-13-
TC-26O
Circuit Schematic
1
■o-
R502
10K:
( )
R501
10K
R503.
7.5K:
R603
7.5K
R605
4702
'0.6
(0.4)
05C
O.lul
C603
0-LuF
C503
O.fuF
'2.0
(1-2)
.R519
: 8200.
R620
222.
R520
220.
: R627
22051
JL0.0022>tF
007
(0.36)
13.5
(9.8)
28
(19)
R633
270ft.
y z w
O
o
-o-
-o-
-Q-
Reoi
10K
I
?D701
5GD
2.9
(2.3)
; R507
■390
;RSO8
330ft
Reos
1-5K
RM?
390ft
------ — VW ------
R609 2.2K
i-51C701
20QuF15WV
R510
2.2K
£
Rsl5.
1.5K;
HP-
C509
1QuF6WV
O.OOIjuF
R616
1.5K
R bio
820ft
R624.
22052=
Tsoi
R265-
2.2K =
r C513_
25WV
CsiB
±0.0022' uF
.R629
1ft
1/2 W
Ftao
■12
1/2W
R530
Ift ’ /l W
■Ren' J tpr
55K
Ceos
0.047uF
R516
15K<
HP
0614-
SOO jj F
25WV
C515 3Qu F 25WV
Ht ---------
f
§
S ’
S;
P
!O
«7
R702 iftz w
.RS23 V 1
■ ’ K 1 c 5 >
•2202
PHt
Ceo9 x__
IQuFOWV
— « n Gen
3QnFp RsnijOOtfuy
15WV 4.7K?3 wv <_
SP501
3d
Cep7_ X
R gi H I
2.7KT I
CNP 1
—
Hjz 1
R528<
220fi<
X506.507 2SD28
1
___ j r I
0.047> F |
I
I
I
I
I
I
I
I
I
I
I
I
I
J501
2TV
w —
R622 :
390Q-
C502
PlOO#
6WV
0512 “
4.7K? 3WV
14.5
(9.5)
R504
8.2K
Mi
X504.505 2SC401
R521 5.6K
------------ ■
R522
390£
T701
P gT
s HP
ov a
-o ----- '
P30>F
25WV
„ C618
O L —
R634>
251 ?
2W
li^Ron .
?20K :
j. ■ iCeoe
P iqu F
— " 12WV_Li
5R612 ~ n
T22K
R609'2.2K
’ C501 ’
1QuF 12WV
''fi't [ir'
Pl I K.
1
- 1
i
L-l --------
I
! R505
I 47052:
I
I _____
I
I
I
I
I
I
I
[VOLUME
I
I
i Rew F
1 8.2KB
- ■ [ VWI ,
1QuF12WVj
R6O2J <Tf '
10KM h
( H
; RsifQ iota
5 - 6K a p' 8K
Ceo2 F,„„
■?SVi35TR52 9
2 ^ 0 (I0.2)^ Q1/2\ v
-4] —
C514
50O4,F
25WV
Ceos
IOX^OOT ju F
12WV I
-o ----
R534 L
222^5
C510
30>F l X j
15WV /-■'
TC-26O
R62I.5.6K
x T c 617 r
>:= yOOW^lF
Jeoi
SP6O1
JI]
<R626
5 220ft
R631 390ft C615 3Q u F 25WV
“ HFH -----
C616 ** 0-QluF
TREBLE j J
1
1
HU
1 1 ReisL
I ! |
Pit
R50 s L
1.5Kf
T 86
— 1 (SO)
, I Csn I"
(1O.|5)j z
10.8
(8 L o ) r
Csn T ]
0.001 p F4=
R518f 10,2
5-6K|(7.8)
J701
— n ■
— H^ f T f Rsw ! '
il2WV ] 2 ' 7K
r~jR51i XR513
T~f 2 ok 4
I .1.C506
I PlOuF
1 ---- " 12WV=£;C508
— wH — —
R509 2.2K]
I
I
---------- 1 --------------------
I
I
I
I
I
IR7011.2K
1 -------- j — w
B SS
1
1
u.Lurj — j-
7 c.
C614_ _
0.1>FT
R525
:22K.
op
i R526
? 220ft
R531 |
390ft '
Mb
C5lS ll 0.01>iF
VOLT GE INDIC TIONS IN ( ) RE T
3WX2 POWER OUTPUT DIMENSION VOLT
I
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I
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MIC INPUT
£2;
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g£lC208
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S10I.201
Si 02 202 . Equalizer Switch (shown
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utomatic Shut-OFF Switch.
Power ON-OFF Switch.
Stereo/Monaural Record Switch (shown in STEREO position)
Bias Oscillator ON OFF Switch.
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Values in parentheses are measured with VTVM in recording position
Parts -CNJ , P;>s. R.c. R.'?'. ano C - m circuit schematic a r <- not using for Mede ’ ji UL &
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B-
MIC INPUT
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To C217
Red
Bro*' Black Gray
Brown
Black Bhck Violet
While
Write
Ss-ilC)
To Cm
Red
To Pre- mplifier
Circuit Board
PLi
Orange
— Components Side —
1 103
1
— 21 -
TC-26O
Mounting Diagram
£
I
1
1
c
Power Supply Section
— Conductor Side -
» 3P' ZOOpF
-■||- ---------------------
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*
20mH J- '.
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((far 33yf)
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t
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prnorur
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O
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Board (S101- 9)
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p
idea
iiL
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I
CwMiSSuF
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X joi 2SD28
®© ©

5
Black
Red
To T701
1 -538- 269-12
Components Side —
D im
— 22 —
TC-26O
Mounting Diagram
I
Power Supply Filter Section
— Conductor Side —
3
co
i is
s
To Printed Circuit Board for Tone Control
"J, | W ^ rown — tq printed Circuit Board for Main mplifier of Channel 1
S BS-T o Printed Circuit Board for Main mplifier of Channel 2
To 25D28(X70i)
---------------- • Brown
L
1 ------ — To Printed Circuit Board forMain mplifier of Channel 1
--------— To Printed Circuit Board forMain mplifier of Channel 2
------- — To J? oi

i
Black
Red
To T701
J
Red
0
•.-538- 269-12
— Components Side —
5K F
&
— 22 —
TC-26O
Mounting Diagram
in
Power Supply Filter Section
— Conductor Side —
I 8
1
To Printed Circuit Board for Main mplif ier of Channel 1
To Printed Circuit Board for Main mplifier of Channel 2
•To Jtoi
1
s-
S
■ s
L
■A
r"
T 6
To 2SD23(X to O
. Brown
I | — — — To Primed Circuit Board for Tone Control
" 1 n^^To Printed Circuit Board for Main mplifier of Channel 1
|| ~ “ “ To Printed Circuit Board for Main mplifier of Channel 2
th

Parts List for U.S. . ( dditional)
Part No.
Description
Q ’ ty
Part No.
Description Q ’ ty
36
//
1
234
3-419-209 03
Parts List for C N D ( dditional)
Part No. Description
Description
Q'ty
Part No.
36
//
!
Part No.
Description Description
Part No.
A36
SCREW
±10?6
1
1
1 105-663-
2
— 23 —
TC-26O
Parts List
: X-34198-31-1
i col ocn cc
1
1
1
1
1
II
1
1
235
238
239
240
235
236
237
241
242
245
246
247
37
38
36
//
3{5
4(5
3(5
4(5
246
247
248
250
251
252
253
254
248
249
250
251
252
253
254
VS
CNJ,
241
243
244
235
243
244
248
250
251
252
253
254
3-401-193-02
8-918-210-53
7-621-261-22
-268-55
-261-66
7-622-108-02
-110-02
7-623-210-22
1-534-330-11
1 536-028-00
1-231-057-11
1-117-035-11
0 027-477-01
3-419-438-01
0-041 302-00
1 244-697-32
-697 32
-110-02
7-623-210-22
1-509-064-11
-029-11
1-534-062-11
1-536-028-00
1-231-057-11
1-101-528-11
1-117-036-11
2
2
X-34193-01-0
7-621-262-56
-262-66
-269-52
-743-37
-743-67
-751-47
-852-37
7-622-108-02
-110-02
7-623-108-12
-110-12
-208-22
-210-22
X-34038-05-0
X 37010-08-1
SCREW
//
1
(4);
(4)
(4)
(6)
(4)
(19)
(30)
(8)
(4)
(8)
(4)
(8)
(4)
1
1
1
1
2
20
4
28
4
22
1
1
1
1
2
20
4
28
4
22
1
1
1
1
Ref.
No.
3(5
" 4(5
PL TE B CK P NEL
N ME PL TE FOR CS
LOC TION L BEL
L BEL, fuse
Ref.
No.
Ref.
No.
Ref.
No.
SCREW
/z
Ref.
No.
Ref.
No.
I 1
I 2
■ 18
6
30
6
24
1
1
1
3
1
1
4(5
C POWER CORD (UL)
MP C P CITOR
1.5/zF ±5%
1
(4)
(4)
(4)
(6)
(4)
(19)
(30)
(8)
< 4 >,
(8)
(4)
(8)1
(4)1
1
1
1 i
1
CP..
CP
Csci
X-34193-01-0
7-621-262-56
-262-56
-269-66
-743-37
-743-67
-751-47
852-37
7-622-108-02
-110-02
7- 623-108-12
-110-12
-208-12
-210-22
3-419-731-03
-734-01
-801-01
0-027-477-01
-476-01
-483-2 S
3-401-193-02
8- 918-210-53
LT,
CP.
C 3 nj
Q'ty
NUT
//
W SHER
NUT
//
W SHER
PL TE B CK P NEL
FUSE COVER
POWER TR NSFORMER
COVER
+ RF3X4
+ RF4X8
" +RF3X10
NUT 3(5
\ 7621 262-56
-262 66
-269-52
-743-37
-743-67
-751-47
-852-37
7-622-108-02
-110-02
7-623-108-12
-110-12
-208-22
-210-22
3-419-209-03
-831 01
-932-01
-833-01
C BINET SS'Y, including
+R3X25
+ R3X30
+ RF4X25
+ R3.1 X 12
+R3.1X25
+ K2.4X7
+ K2.7X 10
7-621-261-22
-261-36
-268-55
-261-66
I 7-622-108-02
■ PINCH ROLLER (8)
FUSE COVER
POWER TR NSFORMER
COVER
HE D CLE NING RIBBON
DEMONSTR TION T PE
SCREW
//
NUT
//
SPRING W SHER 4(5
C POWER CORD (UL)
TERMIN L STRIP
ENC PSUL TED COMPONENT
MP C P CITOR 1.5/zF ±5%
Q ’ ty
Cils, 33«
R|», UO
R:3», no
+ RF3X4
+ RF4 X 8
+ RF3X 10
3(5
4(5
+ RF3X4
+ RF3X5
+ RF4X8
+ RF3X 10
3<5
4(5
3(5
" 4(5
PL TE B CK P NEL
SHIELD PL TE
N ME PL TE, for model
PINCH ROLLER (Bl
" ( )
C PST N
HE D CLE NING RIBBON
DEMONSTR TION T PE
LT,
CP,
CP,
Cjoo
//
WOOD SCREW
//
NUT 3(5
" 4?5
W SHER
//
SPRING W SHER
3-419-209-03
-438-01
0-041-302-00
7-621-261-22
I SCREW
-268-55
-261-66
7-622-108-02
-110-02
C BINET SS'Y, including
+R3X25
-F R3 X 30
" +RF4X25
WOOD SCREW +R3.1X12
+ R3.1 X 25
+ K2 4x7
+ 2.7x10
3(5
4(5
SPRING W SHER 3(5
" 4^5
PINCH ROLLER SS'Y
HE D CLE NING RIBBON
SS ’Y
N ME PL TE FOR UL
3(5
4(5 ’
SPRING W SHER
C BINET SS'Y, including
SCREW +R3X25
" + R3x30
" +RF4X25
WOOD SCREW +R3.1X12
+ R3.1X25
+ K2.4X7
+ K2.7X 10
7-623-210-22 SPRING W SHER
1-534-330-11
1-536-028-00 TERMIN L STRIP
1-231-057-11 , ENC PSUL TED COMPONENT
1-101-534-11 j
1-117-035-11 |
Q ’ ty'j
1
(4).
(4)!
(4)
i (6) :
(4)
(19)
(30)1
(8)
i 141
(8)
(4)
(8),
I I 4 )!
i
1
n
It
NUT
H
SPRING W SHER 4(5
VOLT GE D PTOR
REC P.B. CONNECTOR
C POWER CORD
TERMIN L STRIP
ENC PSUL TED COMPONENT
//
MP C P CITOR
1.5/tF +0.5/,F ±10%
C RBON RESISTOR
RD',SR ±10%
RDf, SR ±10%
MYL R C P CITOR
0.0015/, F ±10%
Parts List for other area except U.S. . & C N D ( dditional)

.Q ’ ty Description
Part No.
Description
Part No.
3-419-363-
16
Al
1
-364-
17
1
365-
18
2
-06-
X-34192-08-
A21
2
56 -412
-24-
TC-26O
Parts List
5
6
3
4
7
8
9
12
13
14
15
-08-
X-34192-01-
-25-
-39-
1
(2)1
(4)
(2)
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
2
1
X-00370-05-
X-34090-12-9
-35-
X-34300-25-
X-34180-37-
X-37010-11-
X-34190-19-
3-419-344-
-345-
-346-
-347-
-348-
-349-
-350-
-351-
-353-
-354-
-355-
-358-
-359-
-360-
-361 —
3
1
1
(4)
1
1
(5)
(2)
(1)1
(4)
(1)1
(4)1
L
1!
(1)
1
1 1
-413-
-414-
-416-
-417-
-418-
-434-
435-
-755-
-756-
-757-
0-007-313-
0-027-019
-022-
-036-
-372
-373
-003
-004
-010
-Oil
-014
-022
-040-
-043-
-046-
-048-
-053-
-097-
-078-
-093-
-095-
-096-
-098-21
-211-
-212-
-221-
-402-
-403-
-404-
-407-
-408
-409-
-410-
-411-
-038
-119
-120
-121
-131
-134
155
-170
-180
Raf.
No.
-025
-026
-027
-028
-029
-030
-039
1 I
1
1
■ 7-624-112-01
X-34194-09-1
X-00270-03-
-09-
-10-
34
35
36
37
38
39
40
41 I
42
43
44
45
46
47
48
49
50
51
52
53
54
55
71
72
73 '
74
75
76
77
78
79
1
1
2
1
1
1
1
1
1
1
0-4
2
1
1
2
1
1
1
1
1
1
1
. 7-621-259-43
A13 ’ X-34194-03-
A14 I
15
A34
A35
1
2
3
4
5
6
7
8
9
10
11
FEED REEL T BLE SS'Y, including
RET INING RING. E-8
T KE-UP REEL T BLE SS'Y.
including
RET INING RING, E-8
B SE PL TE (CH SSIS) SS ’ Y
C PST N IDLER SS'Y
IDLER RM (C) SS'Y
IDLER SH FT (C) SS'Y
STEPPER RM SS'Y
REWIND IDLER SS'Y
FEED SPINDLE DECK SS'Y,
including
C PST N IDLER RM SS ’ Y
SPEED SELECTOR KNOB SS ’ Y
REEL C P SS'Y
IDLER SS ’ Y
FUNCTION SELECTOR KNOB
SS ’ Y
C PST N SH FT SS ’ Y ,
CTU TOR SS'Y
POWER SUPPLY CH SSIS
HE T SINK ( )
" (B)
H NDLE H NGER
POLYETHYLENE B G, on cabinet
H NDLE ESCUTCHEON
" COVER
" SPRING
VOLUME CONTROL KNOB
HE D COVER (B)
ORN MENT L W SHER, for
control panel
B KELITE W SHER, for speaker
SPE KER J CK ESCUTCHEON
" PL TE
ORN MENT LP L TE, speaker jack
(1)
1
(1)1
i
2
C BINET LID SS'Y, including
WOOD SCREW, ©R§.lx8
" ©R3.1X10
zr ©RF3X25
CONTROL KNOB SS'Y. (Sp. ON/
OFF bass treble)
VOLUME CONTROL KNOB SS ’ Y
CONTROL P NEL SS ’ Y, including
WOOD SCREW, +K2.7X10
ORN MENT L PL TE SS ’ Y
REEL P NEL ( ) SS'Y, including
SCREW, + RF20X6
". + B 3$i X 5
LOCK NUT, 2.60
" 30
SPRING W SHER, 2.60
" 30
HE D DECK SS'Y
HE D HINGE SS ’ Y
POWER PUSH BUTTON SS ’ Y.
including
MUTING SWITCH SS'Y
PINCH LEVER SS'Y
RECORDING SH FT STOPPER
SS ’ Y, including
SCREW, +RF 2.60X6
I LEVER SS'Y, idler
" pose brake
BOSS SS'Y, function selector
cam
C M SS'Y, fast forward control
1 LEVER (B) SS'Y, brake
I REEL SPINDLE DRUM ( ) SS'Y
! HE D COVER ( ) SS'Y
-09-1
1
i i!
i •
i
2
1
2
1
1 •
2
1 I
1
1
A1O
All I
Ai2 ;
1
1
1
2
1
A16 j
A17
A18
A19
i
A2O
i 7-624-112-01
-05-
l 7-621-852-35
X-34193-06-
' X-34192-02-8
I 7-621-255-46
-770-52
I 7-622-207-02
-208-02
I 7-623-207-22
-208-22
I X-34 190-02-0
-04-2
-06-
57
58
59
60 ,
61
62
63
64
65
66
67
68
69
70
A22
A23 |
A24
A25 :
A26 j
A27 j
A28
I
A29
A30
A31
A32
A33
No.
-
I X-34193-02-
: 7-621-844-27
-843-27
-262-56
X-34 193-03-
4 I
1
J
VIBR TION BSORBER, for reel
1 panel ( )
VIBR TION BSORBER, for
reel panel (B)
' FELT W SHER, for handle
escutcheon
H NDLE
I INSUL TOR
LEG ( )
! ” (B)
. LEVEL, meter holder
I RECORD, switching lever holder
RECORDING LEVER
T PE INDEX, counter holding
bracket
C M, actuator
CTU TOR CONTROL LEVER
CTU TOR C M
MUTING, switch holding bracket
PILOT, lamp holder ( )
" (B)
UTOM TIC SHUT OFF SWITCH
LEVER SH FT
C M, shaft
COUNTER PULLEY SP CER
PUSH ROD
PULL ROD, actuator lever
RECORDING BUTTON
CUSHION, level meter
C M, muting switch
BR KE BLOCK
PULL ROD, holding bracket
REEL, spindle spacer
NYLON W SHER
C PST N, idler cap
RECORD PUSH ROD
OIL BSORBER
B CK P NEL ( )
HE D SHIELD PL TE ( )
" (B)
SWITCHING PL TE (B)
MICRO SWITCH SHIELD PL TE
INSUL TOR ( )
" (B)
RESTORING SPRING ( ),
record/p.b. switch
RESTORING SPRING (B),
record/p.b. switch
SPRING, fast forward
SPRING, take up idler brake
JOINT ROD
SH FT, fast forward
BR CKET, push rod retainer
PUSH ROD, pose brake
" capstan idler
SELECTOR C M
BR CKET, switch holder
HOLD SP CER
POWER CORD RET INER
BR CKET, idler guide
IDLER PL TE
C PST N SH FT HOLDER
RET INER
C PST N SH FT HOLDER C P
T KE UP SPINDLE
FEED REEL SPINDLE
FEED REEL SPINDLE, spacer
FUNCTION, selector shaft
STEPPER SH FT
C PST N SH FT, holder
SET SCREW, motor pulley
T KE UP SPINDLE, spacer