Onkyo TAR 301 Service Manual

Page 1

ONKYO SERVICE MANUAL

STEREO CASSETTE

TAPE DECK

MODEL TA-FI301

C UDC. UD

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A 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 APPEARAS SHOWN IN THIS MANUAL.

MAKE LEAKAGE-CURRENT 0R RESISTANCE
MEASUREMENTS TO DETERMINE THAT
EXPOSED PARTS ARE ACCEPTABLY IN-
SULATED FROM THE SUPPLY CIRCUIT BEFORE
RETURNING THE APPLIANCE TO THE
CUSTOMER.

ON KYO.
IIIIIIII IIIIIIPIIIIIIIIS

IZUV AC fiilH/

i Ill) or 220V AC: Sll/fiilll/

TA-R301

Ref. No. 3392

SPECIFICATIONS

Track Format:
Eraslng System:
Taps Speed:
Wow and Flutter:

Frequency Response:

S/N Ratio:

Input Jacks:

Outputs:

Motors:

Heads:

Power Supply Rating:

Power Consumption:
Dimensions:

Weight:

racks, Z-channels
AC erase
4.8 cm/seo. (L718 itp.s.)
0.07% (WRMS)
20-17,000Hz (Normal)
(SO-16.000Hz :SdB)
20-1590on (High)
(so-17.0mm: tents)
20-19,000H1 (Metal)
(30-18.000Hz iadB)
SBdB (metal tape, Dolby NR o")
A noise reduction of 10dB above 5kHz
and 5dB at (Hz is possible with Dolby B
NR. A noise reduction at 20dB at 5kHz is
possible with Dolby C NR:
Llne IN: 2
Input sensitivity: GOmV
Input impedance: sokohms
Llne OUT: 2
Standard output level: SOOmV (OdB)
Optimum load impedance: over
50 kohms
Headphone jack: 1
Optimum load impedance: 8 to 200
ohms
DC servo motor: 1
DC motor: 1
REC/PB: Special Hard Permalloyx 1:
Erase head: Ferrite x 1
UK and Australian models:
AC 240V. 50Hz
U.S,A. and Canadian models:
AC 120V, 60Hz
Worldwide models:
AC 120V and 220V switchable. 50 / Gon
17 watts
455(W) x 120(H) x 308(D)mm
(17-15/16 x 443/4" x 12-1/8")
5.1 kg. (112 lbs.)

Specifications and external appearance are subject to change
without notice because of product Improvements.

Page 3

TA-R301

ADJUSTMENT PROCEDURES

PRECAUTIONS TEST EQUIPMENT/T 001.8 REQUIRED:
l. Before :djustlueut. clean the following parts with an Audio oscillator
Ilchai lrloiuslend swab. Digital frequency counter
' record/playhaekllezd erase head Oscilloscope
pinell roller ° capstan Attenullor

AC voltmeter
Non-magnetic screw drlvcr
Test tapes
, TCC153 1 IO KHz, -l5dB
"'"° mm ll : 3 kHz, -10dn
M'IT-l 50 : Dolby level calibration
400th, tone IOOnWb/ln

2. Do not use magnetized screwdriver for adjustments.

1 Demagnetlze record/playback head with I head de-

Connection Llne Output Adiustment .
Item of instrument Input T981 tape Mode indicator point Adm Hemaks
Frequency
1 Tape counter to MTP l l 1 PB Frequency Semi-fixed on 3005:10Hz
speed LINE output counter the meter
terminal
AC voltmeter Maximum
Head and , and same
2 azimuth oscilloscope to TCC»153 PB glimmer iizgvaummh phase at fig-l
LINE output channels L
terminal and R
AC voltmeter
3 :13? to terminals M'lF- 150 PB 35mm E: {231113 300mV
TP-3 and TP-4 '
Frequency
OSC counter to BIflETAL TAPE Frequency 85kHzi2kHz
4 Block P40] read MX-C90 REC counter L453
loose coupling
AC voltmeter R461
5 HX~ to terminals METAL TAPE REC AC L451(Ch'L) Maximum R462
PRO voltmeter L-452(ch.R) V
T1371 and T112 maxtmum
ikHz,
Bias _10dB AC R46l(Ch L) Same level Input VR
6 current 3'2 211221-12 XL 090 REC/PC voltmeter R462(Ch.R) at REC/PB maximum.
-20dB
AC Attenutor or
REC 350mV
1 t AF OSC t
7 Rm fig-2 IkHz XL-lI 090 V0 "3 er mp"
level REC/PB AC R403(Ch.L) Same level
voltmeter R404(Ch.R) at REC/PB
Blank tape
NORMAL
HIGH
METAL
PLAY torqu

FF. REW torque.

Back tentlon .. 2 ~ 7g/cm