Onkyo TA-2550 User manual

TA-2550
SERIAL NO. 3300
ONKYO SERVICE MANUAL
STEREO CASSETTE
TAPE DECK
Black and silver model
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK “4 ON
THE SCHEMATIC DIAGRAM AND IN THE PARTS
LIST ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE THESE COM-
PONENTS WITH ONKYO PARTS WHOSE PARTS
NUMBERS APPEAR AS SHOWN IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT
EXPOSED PARTS ARE ACCEPTABLY IN-—
SULATED FROM THE SUPPLY CIRCUIT BEFORE
RETURNING THE APPLIANCE TO THE
CUSTOMER.
ONKYO.
AUDIO COMPONENTS
SPECIFICATIONS
Track Format: 4-tracks, 2-channels
Erasing System: AC erase
Tape Speed: 4.8 cm/sec. (1-7/8 i.p.s.)
Wow and Flutter: 0.045% (WRMS)
Frequency Response: 20—17,000Hz (Normal)
(30—16,000Hz + 3dB)
20—18,000Hz (High)
(30—17,000Hz + 3dB)
20—19,000Hz (Metal)
(830—18,000Hz + 3dB)
S/N Ratio: 60dB (metal tape, Dolby NR off)
Anoise reduction of 10dB above 5kHz
and 5dB at 1kHz is possible with Dolby B
NR. A noise reduction of 20dB at 5kHz is
possible with Dolby C NR.
Input Jacks: Line IN: 2
Input sensitivity: 6(OmV
Input impedance: 50kohms
Outputs: Line OUT: 2
Standard output level: 500mV (OdB)
Optimum load impedance: over
50 kohms
Headphone jack: 1
Optimum load impedance: 8 to 200
ohms
Motors: DC servo motor: 1
DC motor: 2
Heads: REC/PB: Special Hard Permalloy x 1;
Erase head: Ferrite x 1
Power Supply Rating: AC 220V, 50Hz
Power Consumption: 19 watts
Dimensions: 435(W) x 132(H) x 366(D)mm
(17-1/8" x 5-3/16" x 14-3/8")
Weight: §.8 kg. (12.8 Ibs.)
Specifications and external appearance are subject to change
without notice because of product improvements.

TA-2550
REC/PB level —>
SERVICE PROCEDURES
1. Replacement of power supply cord
There are two power supply cord outlets on the strainrelief.
Insert them in prescribed direction to ensure safety. AS-UC-
3 (UD<120V> model) should be inserted lengthwise and
other types of cords should be inserted horizontally.
Power Supply Cord Power Supply Cord
Horizontal
length wise 4
direction
direction
2. Insulating resistance measurement
Connect the insulating-resistance tester between the plug of
power supply cord and chassis.
Specifications; SOOV more than 1OMQ
HX PRO CIRCUIT OPERATION
EXPLANATION
1. Regarding recording frequency characteristic and bias
Ordinarily, if the recording bias current is increased, REC/PB
frequency response level in the high frequency region (about
10KHz and above) drops, and if the bias is decreased, the
response rises.
ai Bias decrease 4
Frequency >
ene
<—_———_
Bias increase
REC/PB level
2. Regarding the basic operation of HX PRO (Refer to Fig. 1)
The HX PRO uses the ~% PC1297CA IC. The operation is
in accordance with the following.
1) At (a), the recording bias is added onto the audio signal,
and the recording signal is detected. This is the same as
the recording head recording the signal on the tape.
The signal of 1) preserves the frequency response with
the integrated circuit of (b).
R450 + R448 (2.1)
2m xX C426 x R450 x R448 *”
By means of the frequency of Fig. 1, the frequency which
is effective from the beginning is determined. In the
ordinary situation, this is half the audio band (10KHz),
(1OKHz ~ 7.5KHz).
At (c), in order to use the affected waveform after-ward,
absolute detection is carried out.
Frequency =
Rise
a
Frequency —>
4) At (d), the waveform peak value is detected. The output
becomes the peak DC voltage.
5) At (e), the standard voltage and the voltage of (4) are
compared.
6) With the output of (e), the frequency generation level is
controlled (voltage controlled amplifier). That is, the bias
size is varied.
7) Summing up 1) ~ 6):
At (a), the time constant (frequency) that is detected in
the recording signal is preserved, and above a certain
frequency and above a certain level, the VCA controls
the bias current by causeing its reduction. When this is
done, in the maner shown in the explanation of Item I
above, the frequency high region is raised. With this
control, the audio signal is instantaneously dealt with.
. Regarding the operating conditions of the HX PRO
With equation (2. 1) noted above, the effect begins at the
frequency thus determined.
Above a certain level the effect begins.
(Substantially 0 dB: In the vicinity of 500mV line out)
The audio signal component level is dependent upon the
waveform after point (c).
2)

HX PRO BLOCK DIAGRAM
a a a a ee a =
Vee : |
| |
8} VOLTAGE pPC1297CA
| REGULATION i
| AND THERMAL IAS
1,
|
PROTECTION
Oy
gg7
OSCILLA
| 10P
I
= | H
| I
I
|
|
©
*)
i
\
! VCA er ee VCA |
K I
{ PEAK ABSOLUTE ABSOLUTE PEAK |
@ DETECTOR DETECTOR DETECTOR DETECTOR |
|
| |
- ® | am | © |
(ea Seer, eter bs Se a ea Sala ze 4
=
1C436
R448
0.047 C430 ae 100K R447
0.1 : il 100K
ae:
ee
BIAS CURRENT R468 10K
osc 10K
= BIAS ~
yt el i INTEGRATING ADJUST | AOJUST
BIA CIRCUIT C424 T0426
CUR 9.01 0.01
LEFT RIGHT
CHANNEL CHANNEL
RECORD RECORD
HEAD AUDIO exe HEAD
SIGNAL
® cut ofr
Pe R450+R448
20 xC426 xR450 x R448
Fig. |
-|
rif
NO
a
72)
Oo

_ SRAM NRA Reon
BLOCK DIAGRAM
PB AMP BIAS P.B
Q160 TRAP LEVEL
L101 R107
PB _< ¥
HEAD
DOLBY
ty DINLAMP SELECTOR
$301.$302
DIN
OUT
RISS R157
DINE N
MUT 0
a223 9 869
LINE
aisi MPX
in BUFFER FILTER
| oy Ss L201
Po utne be
QO
OUT
5 LINE
MUT
Q221
TAPE
SELECTOR BIAS OSC
Q427.0428 2401
a:
«a ¢
SE
DOL BY. DECODER
Q101
=
TAPE
Q211
Q213
SOURCE
DOLBY ENCODER
Q203
ACCU
R466
Q303
MICRO
COMPUTER
2 METER. AMP
TP.1 R501 Qso1 Q722
BUFFER
a2i7_ |%235
EAD.PHONE| AMP
Q301
—] 6
— | OUT
rec amp = | BLAS
R413 0403 L407 _-otp3
HX PRO
—we- 2467
Q415
VV
Bae
ee} AE
OSS¢e-VL
RI REMOTE
CONTROL
OPERATION
MICRO COMPUTER
Q701
MICRO COMPUTER
@s501
REAL TIME COUNTER
Q722
—_+-
0901~ 0904
3
—+<4—
0905,0906

MICRO COMPUTER (HD614042SH57)
HD614042SH57
PLAY LED t¢ H
rp REPEAT 3 H
FULL H
BLOCK [5 | H
F.L, DISPLAY) TAPE [6] H H
SOURCE H
| rene TuneD WeL8] H :
A
H
ACCU BUSY 7 H
BIAS CONT 24
DIN MUTE 13
REC MUTE %4
LINE MUTE 15 TEST
SOURCE
TAPE
ACCU 7
BALANCE CHECK
POWER OFF 18
SEARCH SIG L
CASS IN O
REC. INH. C
ROTATION SENSOR | 22|
(TAKE UP SIDE) , Bi
MECHA
POSITION oo
SWITCH a
REEL BA
ASSIST
MOTOR O| |
REEL
MOTOR @ | [ace ew
S) oO
[2
NTI SEL
iS]
|
Ure tesa tb steps GS Saat ee
BIS
‘S
ne
ae
CAPSTA
es
{
30]
MOTOR
:
CAP
CONTROL
4
Fa;
@:
3
Ter
321
Veg
Stk
MECHANICAL POSITION CODE
QO701 #23 #24 #25
Mode
L H L
PLAY
PLAY — PAUSE
STOP
L L oH
H L H
H H L
FF, REW
cS)
ono
so
Gl o~o
60] o~o
so] oo
8] So
Yo
i
Sea Yo
TEST
\ @) O o -
TIMER TIMER
53) T~B REC
4MHz
LT
50} +5V
3]
28]
a7]
45)
3
Ce Ec
42
kale
ra
ss) Sf S IE
NRSC IN
i
lee if)
TA-2550
PAUSE LED
AMCS FWD
AMCS BACK
ACCU START
ACCU RESET
REPEAT
MONITOR
P
STO
FL
REW
SYSTEM RESET
PLAY.
REC
PAUSE
AUTO SPACE.
DA OUT
TO REAL TIME
| COUNTER
+5V |
.
ONRSC I/O
REMOTE CONTROL
DECODER 4L- REMOTE CONTROL

TA-2550
IC BLOCK DIAGRAM
NCHC-3205 (P.B. AMP)
@
oe ae
QUT
rowo
NJM2068MD
ONKYO
NHIC-3205
222078
Lech PEAK HOLD CR
Lech AC IN
Rch PEAK HOLD CR
Rch AC IN
CX20187 (DOLBY N.R)
BIC
LINE IN
Vee
PB IN
SSK
VF IN
HPF H
TCH2
TCH!
WT H
TCL2
Tcl
Wow
HPF L
ANTS
arene nH 5
Ne ee
IREF
LINE IN
Vee
PB IN
MPX OUT
REC IN
GNO
LINE OUT
SSK
VF IN
131] HPF H
| 30] TCH2
[29] TCHI
[28] wT H
TCL2
26] TCL
| 25] WT OL
P24) HPF L
123] ANT S
r 22] REC OUT
:
4
:
;
:
q
=
i

HD614128SA41 (COUNTER)
Terminal Name and Function
TA-2550
f-—#— REMA/CONS IN
REMA/ CONS OUT
microcomputer RES €7
ADJUST
o~o-4 oom / Ex
Le—-ake uP] ;
> rotation sensor
suey |
Pin No. Name Function _
1~3 Grid 5~7 FL tube grid (DIGIT) drive use output
4 Vdisp Input (FL tube use) for minus bias voltage to pin Nos. 1 ~ 3, 5,6,9 ~ 16, 39 ~ 42 |
5 CONS FL tube display use output (time lapse) 7
6 REMA FL tube display use output (time remaining)
9~15 a~g FL tube segment drive use output
16 Colon | FL tube “:” drive use output
[418 T,/T2 | Microcomputer T, /T2 function selection input (With-T, , system I/O receiving)
Deck mechanism status input (8 bit serial data) from mechanism control micro-
Sg abies computer
| 20 CLOCK Clock input for reading above DATA (DATA taken on pulse wave dropping)
21 Vee Microcomputer power source (+5V)
22 SUPPLY Cassette mechanism tape feed side turning pulse input |
23 TAKE UP Cassette mechanism tape windup side turning (pulse input )
14 DOM/EX Domestic/export setting use selector input (Tape size type selector use)
Domestic: With power ON C46—> C54 -—> C60 > C80 > C90 > C120 254
25 ADJUST ane buffer compensating value input (normally open,
26 RESET Microcomputer system reset
27 TEST Microcomputer internal test use port, normally connected to Vcc |
28,29 | OSC1, OSC2 Microcomputer clock oscillator terminal
30 GND Microcomputer power source (GND)
31 SIZE Tape size selector input |
| 32 RESET Lapsed time reset input (When displays, digits are 0 :O O)
33 CONS/REMA / Lapsed time « + remaining time selector input (toggle display)
34 BOUT System bus output
| 35 BIN System bus input I
| 36 REMA/CONS OUT __| Remaining time display/lapsed time display status output (when T3)
37 REMA/CONS IN Remaining time display/Japsed time display status input (when T.)
39~42 | Grid 1 ~4 FL tube grid (DIGIT) drive use output |
_7-

TA-2550
ADJUSTMENT PROCEDURES
PRECAUTIONS
1. Before adjustment, clean the following parts with an
alchol moinstend swab,
* record/playback head
* pinch roller
* erase head
* capstan
2. Do not use magnetized screwdriver for adjustments.
3. Demagnetize record/playback head with a head de-
magnetizer.
TEST EQUIPMENT/TOOLS REQUIRED:
Audio oscillator
Digital frequency counter
Oscilloscope
Attenuator
AC voltmeter
Non-magnetic screw driver
Test tapes
VTT-658 10 KHz, —15dB
MTT-1E1 3 kHz, —10dB
MTT-150 Dolby level calibration
400Hz, tone 200nWb/m
Item
Connyenion
pt
Line
input
Test
tape
er
Put
adipsia
Adjust
Remarks
instrument
indicator
point
Frequency
Tape
counter
to
Frequency
|
Semi-fixed
3,005
to
Speed
LINE
output
MN
i
counter
on
the
motor
3,010Hz
terminal
ee
sent
ieas
Maximum
and
Head
scope
to
VTT-658
PB
AC
Head
azimuth
same
phase
Fie
azimuth
voltmeter
|
screw
at
channels
LINE
output
3
LandR
terminal
AC
voltmeter
Playback
|
to
terminals
°
AC
R-107
(Ch.L)
level
TP-1
and
a
ce
voltmeter
|
R-108(Ch.R)
|
245™V
TP-2
1
le
et
;
Level
R-501
(Ch.L)
Meter
MTT-150
PB
|
eee
R-502(Ch.R)
0dB
NADIS-3339
T
F
AC
voltmeter
a
to
terminals
METALTAPE|REC
[M0
|
bi
ae
Minimum
|
ap
TP-1
and
TP-2
|
sits
AC
voltmeter
IR-467
to
terminals
AC
L-409
(Ch.L)
;
R-468
eke
TP-3
and
METS
aA
EE
BES
voltmeter
|
L-410(Ch.R)
Meautar
counter
TP-4
clock
wise
:
AC
voltmeter
IkHz,
—20dB
7
a
_
t@LINE
output
|
and
NEW
XL-I190
|
REC/PB
on
:
ue
en
panes
wiput
-
urren
serail
12kHz,
—20dB
voltmeter
-468
(Ch.R)
at
maximu
a
REC
AC
Attenutor
or
350mV
Reged
voltmeter
|
AF
OSC
output
Input
VR
:
level
Rig?
Thee
ores
KeCRE
Tae
R-413(Ch.L)
—_|
Same
level
car
ae
voltmeter
|
R-414(Ch.R)
at
REC/PB
Blank
tape
NORMAL
.........
UD-1
C-90
PLAY
torque.............
30
—
60g/cm
HIGH
ce
leas
XL-I
C-90
FF.REW
torque
...........
70
—
140g/cm
METAL
..........
MX
C-90
Back
tension
.............
2
—
Sg/cm
Fe Aer ere, Cee Ca ae
Calan ich acaapeDb ches Bebe se daca

ee
TA-2550
NCAF — 3334
id 122
ae
REC
LEVEL Bias
TRAP
R413 ( R416 (R} aks pe
(0)
(2)
413
(L)
®
[e]
[e]
®
i
R467
(L)
R468
(R)
Pe
po
BIAS
ADJ
LEVEL
LEVEL
TP3 TPS
L609 L410
HX PRO
_
RS02 (R) R501 {L)
METER
NCDIS-3339
OSCILLOSCOPE
oe
AF
OSC
Attenuator
LINE
IN
LINE
VTVM
; OUT
0°
(IN
PHASE)
4s°
90°
180
fig-2
:
}
i
i
i
Confirming phase relationship i
fig-1
i
a |

TA-2550
CHASSIS-EXPLODED VIEW
Pe LOSE EET AE eT TENT ITY CEE Be SRG NS CRA Ee 2 meet

CHASSIS-EXPLODED
VIEW
PARTS
LIST
REF.NO.
Al
A4
AS
A6
A7
A8&
AQ
All
Al2
Al4
Al5
Al6
Alg
Al9
A20
A21
A22
A301
A302
A304
A307
A308
A309
A310
A311
A312
A314
A316
A318
A319
A320
A321
A322
A323
A AR Aino A ata AR ACES et
PART NO.
27110419B
27110420A
27141273
28133200
27130536A
27130537A
27273069A
27190524
27121120
27100164B
834430088
831130088
830440109
838426088
27300750
28140877
28140881
27270214A
28184395
28184397
838440089
28140408
28125194
28125194-1
28125195
28125195-1
27267551A
27267553A
28194296
28194297
27267481B
27267498B
28198670
28191469
28191472
27301119A
27301123A
27301120
27301122
28400400
28400413
28135152
28135153
833430080
834230108
DESCRIPTION
FRONT BRACKET AS (S)
FRONT BRACKET AS (B)
BRACKET (PC)
BACK PLATE
BRACKET (PT)
BRACKET (VOL)
JOINT (POW)
HOLDER
BACK PANEL
CHASSIS
TAP-TIGHT SCREW 3TTS+8BBC
TAP-TIGHT SCREW 3TTW+8B
TAP-TIGHT SCREW 4TTC+10CB
TAP-TIGHT SCREW 2.6TTB+8B
BUSHING (CORD)
CUSHION
CUSHION
SPACER
TOP COVER (S)
TOP COVER (B)
TAP-TIGHT SCREW 4TTB+8CBC
CUSHION
END CAP (L) (S)
END CAP (L) (B)
END CAP (R)(S)
END CAP(R) (B)
GUIDE (VOL) (S)
GUIDE (VOL) (B)
COSMETIC BAR (S)
COSMETIC BAR (B)
GUIDE (POW) (B)
GUIDE (POW) (S)
FACET (POW)
CLEAR PLATE
CLEAR PLATE (RE)
CASSETTE LID (S)
CASSETTE LID (B)
CASSETTE LID (AL) (S)
CASSETTE LID (AL) (B)
WINDOW (S)
WINDOW (B)
BADGE (S)
BADGE (B)
TAP-TIGHT SCREW 3TTP+8PBC
TAP-TIGHT SCREW 3TTS+ 10BNi
ao aia i de a a cy
REF.NO.
A330
A501
A801
A803
A806
A807
A808
A810
A poot
T901
Ul
U3
U4
US
U6
U7
U8
U9
U10
Z1
NOTE:
PART NO. DESCRIPTION
27175153 LEG
1N042121 FRONT PANEL (S)
1N043121 FRONT PANEL (B)
28323377A KNOB (PUSH) (S)
28323388A, KNOB (PUSH) (B)
28323378 KNOB (BAL)(S)
28323389 KNOB (BAL) (B)
28323282 KNOB (EJECT) (S)
28323287 KNOB (EJECT) (B)
27260279 SHAFT (EJ)
28323379 KNOB (LEV) (S)
28323395 KNOB (LEV) (B)
28323175 KNOB (POW) (B)
28323380 KNOB (POW) (S)
253149 ACCORD AS-CEE
2300336 NPT-1003G
1N040534-1A = NAAF-3334-1A
1N040536-1 NADIS-3336-1
1N040537-1 NASW-3337-1
1N040538-1 NAETC-3338-1
1N040539-1 NADIS-3339-1
1N040540-1 NAAF-3340-1
INO40541-1 NAAF-3341-1
1N040542-1 NASW-3342-1
1N040543-1 NASW-3343-1
244114 CASSETTE DECK MECHANISM
(S): Silver Model
(B): Black Model
NOTE:
THE
COMPONENTS
IDENTIFIED
BY
MARK
A
ARE
CRITICAL
FOR
RISK
OF
FIRE
AND
ELECTRIC SHOCK. REPLACE ONLY WITH
PARTS NUMBER SPECIFIED.
+
a
nN
on
ol
fo)

TA-2550
BG-555G (DISPLAY TUBE)
TGA IGA
mA
kA
FL
nAé tA
he
ZY
“TA xA zA
xA
Pea cenc can sccansnenscasnesanenececenennsanen
PATTERN AREA
PIN CONNECTION
[em wo. Yoo o9] 58 [57 [6] [54] aa [| 31 20 [29] 08 [a [26] 25 [2e [| [oops [spe fie|speps[ ey pole] se] 7] e|s] [a] 2]
n{o}y |x }2GHG|N|N]|t]S|}y |7Glecisclaci3cjzcg/h]}]s]/ffte;dic|}blaficg/x}r}]q]/ploln{im/1l]k fj ji FF
Bie 0 0 Bade BH eB BBB
PN NO. [57] 56] 55 ]s4]53]52]51[ 50] [8] 7]e6] «5 [m [8[ 2 [al]
FIF]IN/IN]/a]|b figih k
W
PACKING VI
m
REF NO. PART NO. DESCRIPTION
1 29051715 Master carton box (S)
29051714 Master carton box (B)
2 29091264A Pad (L)
3 29091265A Pad (R)
4 29100105 620 x 550 Poly bag
=) 282301 Sealing hook
6 260012 Damplon tape
7 Accessary bag ass'y
29341282 Instruction manual
2010098A Connection cable
29100006A 350 x 250 Poly bag
8 29365020 Waranty card
29100094A Poly bag
NOTE: (S): Silver Model
(B): Black Model
Re ee ar NT RS
—12-—

PC BOARD PARTS LIST
NAAF-3334-1A
CIRCUIT NO.
Q101
Q151
Q160
Q203
Q215
Q301
Q303
Q401
Q403
Q407
Q415
Q701
Q706, Q709
Q901, Q902
Q906
Q103
Q104
Q153,Q154
Q155,Q156
Q205-Q209
Q210
Q211-Q214
Q219, Q220
Q221,Q222
Q223,Q224
Q225, Q226
Q227
Q405, Q406
Q422
Q423, Q424
Q425
Q426-0428
Q429, Q430
Q703
Q704
Q705
Q707
Q708
Q710
Q711
Q712
Q713
Q714
Q715
PART NO.
ICs
222999
222502
222078
222999
222502
22240111 or
222808
222940
222502
22240111 or
222808
222959
222921 or
222465
22240169
222953
222780125MIT
222780055MIT
Transistors
2211255 or
2210746
2211455 or
2212495
2211406 or
2211896
2211455 or
2212495
2211255 or
2210746
2211455 or
2212495
2212304 or
2211945
2211255 or
2210746
2211706
2212304 or
2211945
221281
2211455 or
2212495
2212794 or
2212795
2211455 or
2212495
221282
2201540
2211455 or
2212495
221282
2213090
221281
2201385
221281
2201540
2201540
2211255 or
2210746
2213090
2211455 or
2212495
2211255 or
2210746
221282
DESCRIPTION
CX-20187
NJM-4558DX
NHIC-3205
CX-20187
NJM-4558DX
BA15218 or
M5218P
BA335H
NJM-4558DX
BA15218 or
M5218P
pPC1297CA
BA4558 or
NJM-4558D
HD614042SH57
M-54544AL
78M 12
78MO05
28C1815-GR or
28C945-AP
2SA1015-GR or
JA101Q
28C2240-BL or
2SC1I8ISLL
2SA1015-GR or
JA101Q
2S8C1815-GR or
2SC945-AP
2SA1015-GR or
JA101Q
2SK381-D or
2SK246-GR
2SC1815-GR or
28C945-AP
2SD655-F
2SK381-D or
2SK246-GR
DTCI14YS
2SA1015-GR or
JA101Q
2SD1468-R or
2SD1468-S
2SA1015-GR or
JALOIQ
DTC144ES
28D947
2SA1015-GR or
JA101Q
DTC144ES
DTA114YS
DTC114YS
28D330-E
DTC114YS
28D947
2S8D947
2SC1815-GR or
28C945-AP
DTA114YS
2SA1015-GR or
JA101Q
2SC1815-GR or
28C945-AP
DTC144ES
-13-
CIRCUIT NO.
Q716
Q717
Q903
Q904
Q905
D101, D102
D151-D154
D201, D202
D205, D206
D207-D211
D401
D406-D4t1
D702
D703
D704, D705
D901-D906
D907
D908
D909
D910
D911, D912
L101, L102
L103, L104
L201, L202
L203, L204
L407, L408
L409, L410
L411, L412
ZAQ1
X701
C103, C104
C105, C106
C107, C108
C115, C116
C139, C140
C141, C142
C143, C144
C147
PART NO.
2211255 or
2210746
221282
2211455 or
2212495
2201924 or
2201385
2211255 or
2210746
Diodes
224450822,
224150822 or
224650822
223163
224450822,
224150822 or
224650822
223163
223163
223163
223163
224451003,
224151003 or
224651003
224450562,
224150562 or
224650562
223163
22380006 or
223894
224452001,
224152001 or
224652001
224450511,
224150511 or
224650511
22380006 or
223894
224451501,
224151501 or
224651501
223163
Coils
231147
233382
233328
233382
231101
231100
231077
OSC Block
24606198
Ceramic OSC
3010099 or
3010128
Capacitors
354722219
354741009
354741009
354744719
354741009
354741019
354742219
354742209
DESCRIPTION
2SC1815-GR or
28C945-AP
DTCI144ES
2SA1015-GR or
JA101Q
2SD1761-E or
2SD330-E
2SC1815-GR or
2S8C945-AP
MTZ8.2B,
OSAZ8.2Y or
HZ8.2EB2
188133
MTZ8.2B,
OS5SAZ8.2Y or
HZ8.2EB2
188133
1SS133
1$S$133
1$$133
MTZ10C,
05AZ10Z or
HZ10EB3
MTZ5.6B,
O5AZ5.6Y or
HZ-5.6E-B2
18S133
1N4003 or
IN4002F
MTZ20A,
05AZ20X or
HZ20EB1
MTZS5.1A,
OSAZS.1X or
HZ5.1EB1
1N4003 or
1N4002F
MTZI15C,
OSAZ15X or
HZ15EB1
18S133
NCH-4199
NMC-2069
NMC-6051
NMC-2069
NCH-2148
NCH-4147
NCH-2125
NOB-029
CSA-4.00MG or
PRS-4.00RM11
220uF6.3V, ELECT.
10u4F16V, ELECT.
10uF16V, ELECT.
470uF16V, ELECT.
10nF16V, ELECT.
100nF16V, ELECT.
220uF16V, ELECT.
22uF16V, ELECT.
CIRCUITNO. PARTNO.
C151, C152 392880107
C153, C154 392880107
C155, C156 354782299
C157, C158 354741019
C201, C202 354780479
C203, C204 352950476
C231, C232 354741009
C233, C234 354741019
C235, C236 354742219
C237 354780479
C243, C244 354741009
C245 354780479
C246 354744709
C247, C248 354780479
C249 354741009
C301, C302 354741009
C303 354780229
C305 354781099
C306 354784799
C327 354780479
C328 354741009
C401, C402 354741009
C403, C404 354780479
C405, C406 354782299
C407, C408 354780479
C431, C432 3701310148
C433, C434 3701347148
C438, C439 354741009
C440, C441 3547222198
C442-C444 354780479
C708 354780229
C716 354741009
C902, C903 3547522298
C904, C905 354784799
C906, C907 354780479
C908 354751029S
C909 354741019
C910 354744709
C911 3504168
C912, C913 354784799
C914 354780479
Resistors
R107,R108 5210062
R413,R414 = 5210062
R467,R468 5215045 or
5215021
R473 442525604
R476 442525604
R704 49163104407
R707 49163392405
R710 441722704
R737 49163392407
R738 49163392409
R903-R904 442522294
R905 442520224
R908 441724704
R909 442520104
Plugs
P101 25055134
P103 25045208
P105 25050064
P107, P108 25055147
P303A 2000878
P307 25055186
P401 25055184
DESCRIPTION
1F50V, LL.
1pF50V, LL.
0.22uF50V, ELECT.
100uF16V, ELECT.
4.7uF50V, ELECT.
4.7uF25V, NP.
10uF16V, ELECT.
1004F16V, ELECT.
2204F16V, ELECT.
4.7#E50V, ELECT.
10uF16V, ELECT.
4.72F50V, ELECT.
47pF16V, ELECT.
4.7uF50V, ELECT.
10uF16V, ELECT.
104F16V, ELECT.
2.2uF50V, ELECT.
0.14F50V, ELECT.
0.47uF50V, ELECT.
4.7nESOV, ELECT.
104F16V, ELECT.
104F16V, ELECT.
4.74F50V, ELECT.
0.224F50V, ELECT.
4.74F50V, ELECT.
100PF 100V, APS
470PF 100V, APS
10uF16V, ELECT.
2204F 6.3V, ELECT.
4.74F50V, ELECT.
2.2uFS0V, ELECT.
104F16V, ELECT.
2200uF25V, ELECT.
0.47uF50V, ELECT.
4.7uF50V, ELECT.
10004F25V, ELECT.
1004F16V, ELECT.
47uF16V, ELECT.
130002F25V, ELECT.
0.474F50V, ELECT.
4.7uFS50V, ELECT.
NO6HR 4.7KBD
NO6HR 4.7KBD
NO8HR I0KBC or
NO8HR 10KBC
RS1/2WBJ 560,
RS1/2WBJ 560.
100k2.x7, 1/10W, NETWORK
3.9kOQX5, 1/10W, NETWORK
RS 2 WBJ 270
3.9kQ.x7, 1/10W, NETWORK
3.9kO.X9, 1/10W, NETWORK
RS1/2WBJ 0.220
RS1/2WBJ 2.20
RS 2 WBJ 470
RS1/2WBJ 1.00
NPLG-4P118
NPJ-4PDBL88
NSCT-5P18, DIN SOCKET
NPLG-3P131
NSAS-6P834, SOCKET
NPLG-5SP170
NPLG-3P168
~14-
CIRCUITNO. PART NO.
P405 25055134
P407 25055132
P501L, P502R 25055146
P701 25055187
P702 25055188
P704 25055185
P705, P706 25055149
P708 25055149
P709A 2000873
P710 25055140
P712 25045172
Miscellaneous
27160211-1
27160227
27160211
27141283
82143006
880016
NADIS-3336-1
CIRCUITNO. PART NO.
D913,D914 =. 225142
271904994,
NASW-3337-1
CIRCUITNO. PART NO.
$721 25030289
NAETC-3338-1
CIRCUITNO. PARTNO.
P301 25045139
NADIS-3339-1
CIRCUITNO. PART NO.
Ic
Q501 22240170
Q720 22240084
Display tube
Q722 212056
Transistor
Q503, Q504 2213090
Q723,Q724 2211255o0r
2210746
Ceramic OSC
X702 3010118 or
3010129
Capacitor
C501, C502 354741009
C503,C504 354742209
C720 354741009
Resistor
R501, R502 5215020
R509 49163104415
Socket, plug
PSOIA 2000879
P703 25055226
P705A 2000757
P706A 2000649
P707 25055225
P708A 2000874
TA-2550
DESCRIPTION
NPLG-4P118
NPLG-2P116
NPLG-2P130
NPLG-6P171
NPLG-7P172
NPLG-4P169
NPLG-5P133
NPLG-S5P133
NSAS-18P829
NPLG-10P124
HSJ-1003-01-020
RAD-68B, RADIATOR
RAD-076, RADIATOR
RAD-68, RADIATOR
BRACKET(HT)
3P+6FN(BC), SCREW
NRP-335, PLASTIC RIVET
DESCRIPTION
SEL2913K, LED
HOLDER(LED), POW
DESCRIPTION
NRSF-123-25MP
DESCRIPTION
HLJ0504-01-010
DESCRIPTION
BA6800AS
HD614128SA41
BG-555G
DTA114YS
2SC1815GR or
2SC945A-P
CSA3.00MG or
PRS-3.00RMO03
10uF 16V, ELECT
22uF16V, ELECT
104 F16V, ELECT
NO8HRSKBC
100k x15, 1/10W
NSAS-8P835
NPLG-4P210
NSAS-10P713
NSAS- 10P605
NPLG-3P209
NSAS-10P830
|
|
|

PC BOARD PARTS LIST
CIRCUITNO. PART NO.
Bracket
27130539
NAAF-3340-1
CIRCUITNO. PARTNO.
Transistors
Q409-0414 = 2211255 or
2210746
Coils
L401, L402 233194 or
231089
L403, L404 24606069 or
231084
L405, L406 24606080 or
231083
Plugs
P403 25055317
P404 25055319
NAAF-3341-1
CIRCUITNO. PARTNO.
LED
D311 225137CG,
225137DG or
225137DY
Resistors
R155 5104239
R157 5104241
R488 5104240
Switches
$301-S303 25035514
Sockets
PI07A 2000877A.
PLO8A 2000876A
P307A 2000776
P401A 2000519
P707A 2000875
Holder
27190650
NASW-3342-1
CIRCUITNO. PART NO.
LEDS
D708,D709 = 225141
D710 225137CG,
225137DG or
225137DY
Switches
$701-S710 25035548
S$712-S714 25035548
Sockets
P701A 2000603
P702A 2000818
P703A 2000665
P7044 2000571
Holder
27190649A
DESCRIPTION
BRACKET(EFL)
DESCRIPTION
2SC1815GR or
28C945A-P
NCH-1039 or
NCH-2137
NCH- 1007 or
NCH-2132
NCH-1022 or
NCH-2131
NPLG-3P300
NPLG-5P302
DESCRIPTION
SEL2413CG,
SEL2413DG or
SEL2413DY
N1I2RGLCSKMN25Z
N1I2RGLSKA25Z
N12RGLCSKB25Z
NPS-122-L476, PUSH
NSAS-6P833
NSAS-6P832
NSAS-10P732
NSAS-6P475
NSAS-6P831
HOLDER(LED)
DESCRIPTION
SEL2213C
SEL2413CG,
SEL2413DG or
SEL2413DY
NPS-111-S510, PUSH
NPS-111-S510, PUSH
NSAS- 12P559
NSAS-14P774
NSAS-8P621
NSAS-8P527
HOLDER(LED3)
-15-
NASW-3343-1
CIRCUITNO. PART NO.
C901 3500065A
$901 25035558
25060092
TA-2550 TA-2550
DESCRIPTION
nN 0.01n, AC400V, CAPACITORIS.
NPS-111-L520P, PUSH
NMT-1S33, TERMINAL
THE COMPONENTS IDENTIFIED BY MARK A
ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH
PART NUMBER SPECIFIED.
TAPE MECHANISM PARTS LIST
REF.NO.
1
2:
11
ll-a
1I-b
lI-c
13
21
21-a
21-b
21-c
21-d
21-e
21-f
21-g
21-h
21-i
21-j
21-k
21-1
21-m
21-n
21-0
21-t
22
46
47
$3
54
55
56
63
63-a
63-b
63-c
63-d
63-f
70
71
72
73
74
76
77
78
80-a
80-b
80-c
80-d
80-e
80-f
80-g
94
94-a
94-b
94-c
94-d
94-e
94-f
94-g
94-h
94-1
94-j
105
107
110
PART NO.
24611042-1
24605468
24611043
24611053
24610999
24605500
24606304
24611364
24611365
24611046
24605502
82512012
801250
24600037A
24600041
24605618
24611052
24611054
24611055
82112002
801251
24610652
24610495
24604062
893030
24610943
24610963
24610964
24605501
24605505
24602267
24606305
24611056
24606205
24611057
82112030
24611058
24603281
24603282
24611049
24605503
891030
24601167
24611047
24611003
24610968
24601103
24606182
24602133
82112003
833125209
24606181
24611052
24601145A
24601054
24605467
24602235A
24602236A
24610969
24610970
24602237A
24610981
24610374
24611048
24602372
24605452
24602269
DESCRIPTION
MECHANISM CHASSIS
SPRING (CASSETTE)
BRAKE PLATE AS
BRAKE PLATE
BRAKE RUBBER
SPRING
P.C.B. AS (SENSOR)
BASE AS (HEAD)
BASE AS (HEAD)
HEAD BLOCK
SPRING
BIND SCREW M2x [2
PAN-HEAD SCREW M2x4
R/P HEAD
EHEAD
SPRING
BINDER
STOPPER
WASHER
PAN-HEAD SCREW 2PX2FN
SCREW M2x4
SHAFT
ADJUSTING NUT
SPACER
CIRCLIP E3
STEEL BALL @3
PLATE (HEAD)
SPRING STAND
SPRING
SPRING
REEL AS
SWITCH AS
BRACKET (SWITCH)
LEAF SWITCH
WASHER
PAN HEAD SCREW M2x30
WASHER 2.9X5x().5t
LEVER (SWITCH)
LEVER (METAL)
LOCK PLATE
SPRING
STOP RING CS-3
PULLEY AS
WASHER 2.1X4.5x0. It
WASHER 1.8X3.8x0.5t
BRACKET (MOTOR)
ASSIST MOTOR
LEAF SWITCH
CAM GEAR
PAN-HEAD SCREW M2x3
TAP-TIGHT SCREW M2.5 x20
P.C.B.
BINDER
REEL MOTOR ASS’Y
MOTOR
SPRING
LEVER AS (GEAR)
GEAR
WASHER 1.3X3.4x0.5t
FELT
GEAR (MOTOR)
WASHER 1.7x6x0.25t
WASHER
SPRING STAND
FLYWHEEL
SPRING (THRUST)
BELT
REF.NO. PART NO.
112 24610673
115 24601213A
[15S-a 24610971
115-b 24610671
[15-c 24601202A
115-e 801338
121 24602270
123 24605453
125 833125069
126 833125059
129 801250
131 82512614
133 833426105
134 833126055
136 837120058
137 801292
139 24610349
140 24610515
141 24610972
142 24610973
150 2460548 |
151 24611235
152 24602271
158 24610939
164 24605188
168 24610940A
168-a 24610949
168-b 24610849A
168-c 24610848A
168-d 24605463
168-e 835426082
172 24611050
172-a 24611059
172-b 24603283
172-c¢ 24605504
172-d 893030
172-e 24610452
179 24611051
180 24605456
181 891024
187 24611079
188 833130049
189 24605704
~16—
DESCRIPTION
WASHER
BRACKET (FW)
BRACKET (FLYWHEEL)
THRUST WASHER
CAPSTAN MOTOR AS
SCREW M2.6x3.5
PINCH ROLLER AS
SPRING
SCREW M2.5x8
TAP-TIGHT SCREW M2.5x5
PAN-HEAD SCREW M2x4
BIND SCREW M2.6x 14
TAPPING SCREW M2.6x 10
TAPPING SCREW M2.6x5
TAP-TIGHT SCREW M2x5
TAP-TIGHT SCREW M2x3.2
WASHER 1.8x3.2x0.5t
WASHER 2.6x4.7x0,25t
WASHER2.6X7X0. 13t
WASHER 2.7x6x0.5t
SPRING
PANEL
BELT
SIDE BRACKET (R)
SPRING (CASSETTE)
HOLDER AS (CASSETTE)
FRAME
HOLDER (R)
HOLDER (L)
SPRING
TAPPING SCREW M2.6X8
SIDE BRACKET AS (L)
SIDE BRACKET AS (L)
LEVER (RELEASE)
SPRING
CIRCLIP E3
WASHER
DAMPER UNIT
SPRING
STOP RING
BRAKE
PAN HEAD SCREW M3x4
SPRING
SIR AER OSH LCR SiR SoD RSNA sinh nee:

TAPE MECHANISM-EXPLODED VIEW
eee as 80 :(80-a~80-i)
172: (172-a~172-e)
94: (94-a~ 94-j)
11: (11-a~11-c)
115: (115-a~115-e)
63:
(63-a~63-f
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ate ~18-
TA-2550
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TA-2550
A B Cc D E F G H
SCHEMATIC DIAGRAM (1/2)
nen ne eee =i
+81
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Q160
Q221
6.8K
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