Onkyo TARW 66 Service Manual

Page 1

TA

OM 3235
STEREO CASSE I IE
TAPE DECK
MODEL TA-RW66
Black model

UDN, UDC, UD 120V AC, 601-12

UG 220V AC, SOHZ

UW 120 or 220V AC, 50/60Hz

UQA, UQB 240V AC, SOHZ

SAFETY-RELATED COMPONENT WARNINGII SPECIFICATIONS

COMPONENTS IDENTIFIED BY MARK A 0N Track System: 4-tracks, 2Achannels
THE SCHEMATIC DIAGRAM AND IN THE PARTS Recording System: AC bias
LIST ARE CRITICAL FOR RISK OF FIRE AND Erasing System: AC erase
ELECTRIC SHOCK. REPLACE THESE COM- Tape Speed: 4.8 cm/sec (1.7/8 i~P~SA)
PONENTS WITH ONKYO PARTS WHOSE PARTS Wow and Flutter: 0,07% (WRMS)
NUMBERS APPEAR AS SHOWN IN THIS MANUAL Frequency Response: 20 - 15 ,OOOHZ (Normal)

(30 - 14,000Hz t 3dB)
20 ~ 16,000Hz (High)
(30 7 15.000Hz : 3dB)
20 7 17,000I'Iz (Metal)
(30 7 16,000Hz a: 3dB)
S/N Ratio: Dolby NR out: 56dB(meta1
position tape)
A noise reduction of 10dB above
SkHz and SdB at IkHz is possible
with Dolby B NR. A noise reduc-
tion of 20dB at SkHz is possible
with Dolby C NR.
Input Jacks: Line IN: 2
Inpm sensitivity: 60mV
Input impedance: SOkohm
Outputs: Line OUT: 2

Std output level: SOOmV (OdB)
ONKYO Optimum load impedance: over
3 50k-ohm
Headphone Jack: 1
Optimum load impedance: 8 ohm
to 200 ohm

MAKE LEAKAGECURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT
EXPOSED PARTS ARE ACCEPTABLY IN-
SULATED FROM THE SUPPLY CIRCUIT BEFORE
RETURNING THE APPLIANCE TO THE
CUSTOMER.

Page 2

TA-RW66

Motors:
Heads:
Power Supply:

Power Consumption:
Dimensions:

Weight :

DC servo motor: 2

REC/PB: Special Hard Permalloy
x 2

Erase head: Ferrite x l
AC120V/60Hz, 120/220V
50/60Hz,

18 watts

435(W)x122(H)x 259(D)mm
(17-1/8 x 4-7/8 x 10-3/16)
4.4 kg. (97 lbs)

Because of product improvements, specifications and ex-
ternal appearance are subject to change without notice.

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

Iengrh Wise
direction

Power Supply Cord

Horizontal
direction

2. Instruction resistance measurement

Connect the insulating-resistance tester between the plug of
power supply cord and chassis.

Specifications; 500V more than 10MB

IC BLOCK DIAGRAM

BA6251 (REC AMP. E0. SW)

INI

INZ

ms

nu

m5

m6

m1

ourv
cm 2 IN ovw-i >740 our
ours I

cum our

ours

ours

GND 0- GM)

ourv
N.C.

IR-2E27

05 E E Vcc
0
0:. [2 1:5] AMP
03 E :4] 'IN
02 E E AMP
01 E 1:2] +IN
DI E E 05
D2 E E DA
GND E 9 o:
NJM-2068D-D
V
t , V
k E
G
_l 5.
6 m E:-
. ; flOUTPUI
a:
w T _ 3E T
Amvo 5£
_l_
A-lN Z 7 5-01."
A
-le a-m
VI! A 5 BIN

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