Onkyo TAR 240 Service Manual

Page 1

ONKYO SERVICE MANUAL

STEREO CASSETTE
TAPE DECK
MODEL TA-R240

TA-R24O

0M3264

Black model
UDN, UDC, UD 120V AC, 60Hz
UW 120 or 220V AC, 50/60Hz

SAFETY~RELATED COMPONENT WARNINGI!

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 APPEAR AS SHOWN IN THIS MANUAL.

MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT
EXPOSED PARTS ARE ACCEPTABLY [Ni
SULATED FROM THE SUPPLY CIRCUIT BEFORE
RETURNING THE APPLIANCE TO THE
CUSTOMER.

ONKYOQ
MIIIIII IIIIMPIIIIIIIIS

SPECIFICATIONS

Track System: 4»tracks, Zlchannels
Erasing System: AC erase

Tape Speed: M cm/sec (1-7/8 i.pls.)
Wow and Flutter: 0.07% (WRMS) \

Frequency Response:

SIN Ratio:

Input Jacks:

Outputs:

Motors:
Heads:

Power Supply:

2.-15,000Hz (Normal)
(SO-14.000Hz deB)
20-16,000Hz (High)
(30-15,"le tail)
20-17, 0H2 (Metal)
(SQ-tSJOIHz 13dB)
Dolby NR all: SBdB (metal position tape)
A noise reduction .1 Nil above 5kHz
Ind 5" at IkHz is possible with Dolby B
NFL A noise reduction 0! ZOdB at 5kHz is
possible with Dolby C NR.
Microphone jacks: 2
Input sensitivity: 0.6mV/600 ohms
Input impedance: 2.7 kohms
Line IN: 2
Input sensitivity: GOmV
Input impedance: 50 kohms
Line OUT: 2
Standard output level: 500mV (OdB)
Optimum load impedance: over
50 kohms
DC servo motor x 1; DC motor x1
REC/PB: Special Hard Permatloy x 1;
Erase head: Ferrite x1
USA and Canadian models:
AC 120V. 60Hz

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TA»R240

U.K. and Australian models: IRZEOZ (LEVEL METER DRIVE)
AC 240V. 50Hz awn.
Worldwide models:
AC 120V and 220V switchable. 50 / 60Hz
Power Consumption: 18 watts
Dimensions: 435M] x 112(H) x 262(D)mm
(17-1/8 x 43/8" x 1043/8")
Weight: 4.2 kg (93 lbs)

Specifications and external appearance are subject to change
without notice because at product improvements.

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- PC | 29°C
3 (UD<]20V> model) should be inserted lengthwise and

other types of cords should be inserted horizontally.

[Nix SW92 6ND SW9: 6ND INF: VLCZ

Power Supply Cord Power Supply Cord

3
length wtse Herizamat
direction direction

2. Instruction resistance measurement

Connect the insulating-resistance tester between the plug of mm W GND SW mm m" vw
power supply cord and chassis.
Specifications; 500V more than lOMt'l
3. Replacing the lamps
This unit used the lamps listed below,
CIICUlI No Part NO. Description BA6251 (REC AMP. E0. SW)
PL901 210090 lSOmA, 14V. Lamp
[NI OUVt
IC BLOCK DIAGRAM .N °_i>.,_°
BA6229 (REEL MOTOR DRIVER) M ° |||
INA BUY 4 0.
(El VLcl VR INS CHIS
, O (D IN HE
(P INS OUTS
,_ IN7 OU77 6N0 W- 6ND
D.|N (9-H _g::w mm N. c.
N >-®vom
st (97% L-_®V
NJM-ZOBSD-D
Q)
"0 A210 0 a &
_l'_
INPUT ouwur A»I_N2 7 MW
W@ n: 636+] @ awfi A
it (it I L 775?): LL fl"
:er "f " M
L l H *77E77777H W For V 5 EIN
H V] H i L I I. imTu
( '09 VIEW )