Onkyo TA-2200 User manual

ONKYO SERVICE MANUAL
TA-2200
SERIAL NO. 3326
STEREO CASSETTE
TAPE DECK
MODEL TA-2200
Black model
| UDUD® |
120V AC , 60Hz
UG ia 220V AC, 50Hz
UW
120 or 220V AC, 50/60Hz
UQA.UOB | 240V AC. 50Hz
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK “~ 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.
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: 0.07% (WRMS)
ONKYO.
AUDIO
COMPONENTS
Frequency Response: 20—17,000Hz (Normal)
(30—16,000Hz +3dB)
20—18,000Hz (High)
(30—17,000Hz +3dB}
20—19,000Hz (Metal)
(30—18,000Hz +3dB)
S/N Ratio: 58dB (metal tape, Dolby NR off)
A noise reduction of 10dB above 5kHz
and 5dB at 1kHz is possible with Dolby B
NR. A noisy reduction of 20dB at 5kHz is
possible with Dolby C NR.
Input Jacks: Line IN: 2
Input sensitivity: G(OmV
input impedance: 50kohms
Outputs: Line OUT: 2
Standard output level: 5}00mV (OdB)
Optimum load impedance: over
50 kohms
Headphone jack: 1
Optimum load impedance: 8 to 200
ohms
Motors: DC servo motor: 1
DC motor: 1
Heads: REC/PB: Special Hard Permalloy x 1;
Erase head: Ferrite x 1
Power Supply Rating: U.K. and Australian models:
AC 240V, 50Hz
U.S.A. and Canadian models:
AC 120V, 60Hz
Worldwide models:
AC 120V and 220V switchable, 50/60Hz
Power Consumption: 19 watts
Dimensions: 435 (W) x 122(H) x 262(D) mm
(17-1/8" x 4-13/16” x 10-15/16")
Weight: 4.4 kg. (9.7 Ibs.)
RC-146T Remote Control Transmitter
(U.S.A. and Canadian models only)
Transmitter: infrared
Signal Range: Approx. 5 meters (16 feet)
Power Supply: Two AAA batteries
Dimensions: 38(W) x 150(H) x 15.3(D) mm
(1-1/2” x 5-7/8" x 5/8”)
Weight: 62 grams (2.2 oz.) (including batteries)
Specifications and external appearance are subject to change
without notice because of product improvements.

REC/PB level —»
TA-2200
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
direction
direction
2. Insulating resistance measurement
Connect the insulating-resistance tester between the plug of
power supply cord and chassis.
Specifications: 5SOOV more than 1OM&2
HX PRO CIRCUIT OPERATION
EXPLANATION
I. 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
1OKHz and above) drops, and if the bias is decreased, the
response rises.
A!
Frequency —>
Drop Bias decrease 4
Frequency —>
————$—_>
—————
Bias increase
REC/PB level
2. Regarding the basic operation of HX PRO (Refer to Fig. 1)
The HX PRO uses the «% PCI297CA 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.
2) The signal of 1) preserves the frequency response with
the integrated circuit of (b).
R433 + R431
2n X C423 x R433 x R431
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 (1OKHz),
(lLOKHz ~ 7.5KHz). |
3) At (c), in order to use the affected waveform after-ward,
absolute detection is carried out.
Frequency = (2.1)
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 |) ~ 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.
3. Regarding the operating conditions of the HX PRO
1) 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
~—

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TA-2200
IC BLOCK DIAGRAM
NCHC-3205 (P.B AMP) CX20187 (DOLBY N.R)
BIC L 1 | REC/ PB
3.9k ON/OFF [2 | IREF
2SC2T7I2GR
~ LINE IN LINE IN
Vec 139] Vee
PB IN 5 | PB IN
MPX OUT [6 | MPX OUT
REC IN Li | REC IN
GNO rH 35] GNO
LINE OUT[ 9 | LINE OUT
SSK 10 | SSK
VF IN [11] VF IN
T0720
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[12]
HPF
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TCH2
NJM2068MD
TCH2
13
|
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TCH} 29] TCHI
WT H 15 | 28] WT H
ONKYO
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NHIC-3205
222078
TCL
26]
TCL
WoL 18 25) WT L
HPF L [19] HPF L
ANTS [20] 123] ANT S
REC OuT [21 | 122] REC OUT
*e08 TA-7291S (MOTOR DRIVE)
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TA-2200
BG-654G (DISPLAY TUBE)
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OPERATION ||
TAPE SELECTOR
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PACKING VIEW
REF NO. PART NO.
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PACKING PART LIST
DESCRIPTION
1 2905 1896 Master carton box
2 29091235A Pad(L)
3 29091236A Pad(R)
4 29100037A 650 X 500 Poly bag
5 282301 Sealing hook
6 260012 Damplon tape
7 Accessary bag ass’y
29341401 Instruction manual
2010098A Connection cable
29365019 Waranty card(N)
29358002G _ Service station list(N)
24140146 Remocon, RC-146T
3010124 Batterie, UM-4
29100006A 350 X 250 Poly bag
G/W Model
REF NO. PART NO. DESCRIPTION
1 29051896 Master carton box
2 29091235A Pad(L)
3 29091236A Pad(R)
4 29100037A 650 X 500 Poly bag
5 282301 Sealing hook
6 260012 Damplon tape
7 Accessary bag ass’y
29341403 Instruction manual
29341401 Instruction manual (QA/QB)
2010098A Connection cable
29100006A 350 X 250 Poly bag
29365022 Waranty card (QB)
NOTE
(N): Only U.S.A. Model
(QA): Only Australian model
(QB): Only U.K. model

TA-2200
MICRO COMPUTER (HD-614048SJ49)
REC FL. HY | 64 PLAY FL.
GRID 1 2 | 163 PAUSE FL.
GRID 2 HIGH FLe
GRID 3 61] NORMAL FL.
GRID 4 rs | 60 METAL FL.
SEG.a 6 | 59] SEARCH SIGNAL
SEG. b i.
SEG.¢ 6 | = o “oO TIMER PLAY
SEG. d 9 ~ 0 ~o TIMER REC
SEG.e
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ON/OFF
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TA-2200
MICRO COMPUTER
Terminal Name and Function
Pino. [Name Function
| Lights up the FL tube REC display. HIGH = Light up.
2~3 | GRDi~4
6~ 12 SEG.a~ g Lights up the FL tube segments a ~ g. HIGH = Light up.
14 LINE MUTE Line muting output: HIGH = Muting ON/LOW = Muting OFF.
15 REC MUTE Record muting output: HIGH = Muting ON/LOW = Muting OFF.
16 REC/PB Record/playback selector output: HIGH = Record/LOW = Playback.
17 BIAS ON/ OFF Recording bias oscillator control output: HIGH = Bias ON/LOW = Bias OFF.
r FF
REW key input
PAUSE key input: input accepted in STOP, Recording, Playback and
Autospace modes.
REC key input: effected by simultaneously pressing both PAUSE KEY and
PLAY KEY. |
PLAY PLAY key input
24 AMCS AMCS key input (music selection)
“AUTO SPACE AUTOSPACE key input: input accepted from REC and REC/PAUSE modes.
STOP key input
‘COUNTER RESET COUNTER RESET key input: sets electronic counter to ‘0000’.
Vcc PC power supply.
POWER OFF POWER OFF signal input: HIGH = POWER OFF
ROTATION SENSOR Pulse input for tape counter, tape end sensor and BLOCK REPEAT time.
REEL M. (FF) Reel motor output (FF direction). Set to HIGH to rotate in FF direction.
Reel motor output (REW direction). Set to HIGH to rotate in REW
direction.
Reel motor rotation speed selection output. HIGH = PLAY/LOW =
FF/REW.
Triggers the solenoid. LOW = Trigger.
SOL. HOLD Holds solenoid. LOW = Hold.
CAP M. ON/OFF Capstan motor ON/OFF output. HIGH = ON/LOW = OFF.
Record inhibit tab (A side) detection input.
REC INH. (A) HIGH = Record inhibit tab broken.
HIGH SW.
High position tape detection input. LOW = High position tape.
METAL SW. Metal tape detection input. LOW = Metal tape.
RESET PC system reset.
49
50 TEST Link to + Vcc
51,52 Internal oscillator input terminal.
: Grounding
FULL REPEAT or BLOCK REPEAT selection input. HIGH = FULL
REEL M. (REW)
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55
REPEAT
ON/OFF
REPEAT ON/OFF selection input. HIGH = OFF/LOW = ON.
56
57
59

TA-2200
Pintle. [Name=—=SC*dStCi‘“‘SCS™S™S™S™™O™OCFunetion
PAUSE FL. Lights up FL tube PAUSE display. HIGH = Light up.
PLAY FL. Lights up FL tube PLAY display. HIGH = Light up.
REPEAT (FULL or BLOCK) and AMCS.
The FULL REPEAT function enables five plays of one full side of the tape currently on the machine. It operates such
that when FULL REPEAT has been selected and the end of the tape is sensed during PLAY or rewind then the machine
will automatically enter this mode. Where the end of the tape is sensed and this mode entered during play, then the
latest completed play will be deemed to be the first play and the tape will then be played four more times. The use of the
PAUSE or its release during the course of a FULL REPEAT will not have any effect on the subsequent number of
repeats. (see Fig. 2)
The BLOCK REPEAT function enables five consecutive plays of the section between any two selected points. The start-
ing point is the point at which the BLOCK REPEAT function is switched ON, or alternatively, if the BLOCK REPEAT
function is already switched ON, it is the point during play at which the PLAY button is depressed. If the PLAY button
is depressed more than once then the effective starting point will be the last point at which the button was depressed and
in the case of a reverse deck, if the end of the tape is sensed before the return point has been set then the mechanism is
reversed and that point becomes the new play starting point.
The return point is the point during F-PLAY at which the REW button is depressed or the point during R-PLAY at which
the FF button is depressed. However, in the case of a one-way deck, if the end of the tape is sensed before the return
point has been set then the end of the tape itself will become that return point. The use of the PAUSE or its release
during the course of a BLOCK REPEAT will not affect the continuation of the operation but if any other function is
activated during the course of a BLOCK REPEAT then this will cause the BLOCK REPEAT function itself to be
terminated at that point and then new operation to begin. When the return point is sensed for the fifth time then the
BLOCK REPEAT operation is terminated and the machine stops. (see Fig. 3)
* Where the full BLOCK REPEAT section is set to cover too short a period the return point should be moved out until
sufficient length has been allowed.
TAPE END TAPE END Return point Starting point of play
{ ' ' Y
LS
- . Explanation of symbols:
11: PLAY button input
@ @ A: REW button input
© —-: Playing
+>: Rewinding
2 2 O : Stop
5 _® O © ©~@©: Consecutive number of play
Stop
Stop
Fig. 2 Representation of FULL REPEAT operation Fig. 3 Representation of BLOCK REPEAT operation
| (The play start point and return point are detected
by counting the revolution pulses of the reel cap-
stan)
AMCS is a music selection function which operates by putting the mechanism into the CUE condition and then monitor-
ing the signals entering the SEARCH SIGNAL terminal in order to detect the start of the music and then play it for a
period of about ten seconds. (Whilst in this play condition the PLAY display flashes at about 1Hz). When the ten seconds
is up the machine moves to the next music selection operation.
* The gap between pieces of music is detected by converting to normal play time and taking a nominal 5 seconds or
actual 2.5 seconds or more as the nonrecorded gap.
—~g—

TA-2200
ADJUSTMENT PROCEDURES
PRECAUTIONS TEST EQUIPMENT/TOOLS REQUIRED:
1. Before adjustment, clean the following parts with an Audio oscillator
alchol moinstend swab. Digital frequency counter
* record/playback head * erase head Oscilloscope
* pinch roller * capstan Attenuator
AC voltmeter
. not use magnetized screwdriver for adjustments. . .
2. Do not use magne J Non-magnetic screw driver
=
Test
tapes
3,
pemagnetize
record/playback
head
with
a
head
de-
VIT-658
:
10
KHz,
—15dB
Mmagnetizer.
MTT-111
:
3kHz,
—10dB
MTT-150
:
Dolby
level
calibration
400Hz, tone 200nWb/m
Semi-fixed
on the moter
Frequency
counter
Playback
level
R439(Ch.L)
R440(Ch.R)
Same level
at REC/PB
Input VR
maximum.
_ instrument indicator point
AC voltmeter
; AC R107(Ch.L)
MTT-150 voltmeter | R108(Ch.R) 245mV
TP-4
1KHz, —20dB AC
Fig.-2 and XL-II C-90 REC/PB voltmeter
12kHz, —20dB
Frequency
Tape counter to :
1 speed LINE output MTT-111 3000 + 20Hz
terminal
to terminals
Frequency
counter to METAL TAPE Frequency
P401 read MX-C60 REC counter L407 85k Hz + 2kHz
loose coupling
AC Attenutor or
REC AF OSC output 350mV
XL-II C-90
AC voltmeter Maximum and
and oscillo- AC Head azimurth | same phase
scope to VTT-658 voltmeter | screw at channels Fig.-1
LINE output Land R
terminal
AC voltmeter ' R-439
; to terminals AC L-405(Ch.L) . R-440
5 | HX-PRO | tp) and METAL TAPE | REC | voltmeter | L-406(Ch.R) | Maximum Max
; clock wise
AC R401(Ch.L) Same level
REC/PB voltmeter | R402(Ch.R) at REC/PB
Blank tape
NORMAL ......... UD-1 C-90 PLAY torque.......... 30 ~ 70 g/cm
HIGH ............ XL-II C-90 FF.REW torque ........ 80 ~ 180 g/cm
METAL........... MX C-90 Back tension........... 2~ 7 g/cm
—10—