Onkyo TA 2025 Service Manual

Page 1

SERIAL NO. 3119

ONKYOG SERVICE MANUAL

STEREO CASSETTE
TAPE DECK
MODEL TA2025

TABLE OF CONTENTS

Item

l

Specifications

Special mode of operation
Component location

parts list

Exploded view

Adjustment procedures

Block diagram

Tape mechanism exploded view
Printed circuit board view from component location
Printed circuit boardparts list
Block diagram of IC

Packing procedures

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SPECIFICATIONS

D model

Track Format:
Recording System:
Erasing System:

Tape Speed:

Wow & Flutter:
Frequency Response:

Signalvto-Noise Ratio:

Input Jacks:

Outputs:

Motors:
Heads:
Semiconductors:

Power Consumption:
Dimensions:

Weight:

4-track, Z-channel stereo

AC bias

AC erase

4.8 cm/sec. (l-7I8 i.p.s.)

0.045% (WRMS)

20 - 15,000 Hz (30 - 14,000 Hz 23 dB)
(normal position tape)

20 - 16,000 Hz (30 - 15,000 Hz t3 dB)
(high position tape)

20 - 17,000 Hz (30 - 16,000 Hz :3 dB)
(metal position tape)

60 dB (Metal tape, Dolby Out)

A noise reduction of 10 dB above 5 kHz and
5 dB at 1 kHz is possible with the Dolby NR
m.

Microphone Jacks: 2

Minimum input level: 0.3 mV/600n
Input impedance: 5 kn.
Line In Jacks: 2
Minimum input level: 50 mV
Input impedance: 50 kn
Line Out J acks: 2
Standard output level: 500 mV (0 dB)

Optimum load impedance: Over 50 kn
Headphone Jack: 1
80 7 2009
DC servo: 1
DC: 2
Rec/pb head: ' Hard Permalloy
Erase head: Ferrite
TR: 41 Diodes: 28
1C: 10 LED: 8
18 watts
418(W) x 100(H) x 270(D) mm
(161/2" x 3-15/16 x10-5/8")
4.5 kg. (9.9 lbs.)

* Specifications and external appearance are subject to change
without prior notice due to product improvements.

Mechanism specifications

1) Tape speed:

2) Wow and Flutter:
3) Taken}: torque:
4) F.F. torque:

5) Rewind torque:
6) Rewind time:

4.8 cm/sec. (3,000 Hz ~ 3,060Hz)
Use a standard test tape

WIT-658 (3 kHz) or equipment.
Less than 0.08% (WRMS)

35 -55 gr-cm

70 ~ 140 gr-cm

70 - 140 gr-cm

Less than 90 sec.

(Use a C-60 cassette tape)

G/W Model

Track Format:
Recording System:
Erasing System:
Tape Speed:

Wow &. Flutter:
Frequency Response:

Signal-to-Noise Ratio:

Input Jacks:

Outputs:

Motors:

Head s:
Semiconductors:
Power Supply:
Power Consumption:
Dimensions:

Weight:

4-track, Z-channel stereo

AC bias

AC erase

4.8 cm/sec. (1-7/8 i.p.s.)

0.045% (WRMS)

20 ~ 15,000 Hz (30 714,000 Hz 23 dB)
(normal position tape)

20 - 16,000 Hz (30 7 15,000 Hz :3 dB)
(high position tape)

20 - 17,000 Hz (30 A 16,000 Hz :3 dB)
(metal position tape)

60 dB (Metal tape, Dolby Out)

A noise reduction of 10 dB above 5 kHz and
5 dB at 1 kHz is possible with the Dolby NR
m.

Microphone Jacks: 2

Miniumu input level: 0.3 mV/60011
Input impedance: 5 kn.
Line In Jacks: 2
Minimum input level: 50 mV
Input impedance: 50 km
DIN ln Jack: 1
Minimum input level: 0.1 mV/l kn
Input impedance: 2.7 kn
Line Out Jacks: 2
Standard output level: 500 mV (0 dB)
Optimum load impedance: over 50 kn
DIN Out Jack: 1
Standard output level: 500 mV (0 dB)

Optimum load impedance: over 50 kn
Headphone Jack: 1

8n - 2009
over 50 km
DC servo: 1
DC: 2
Rec/pl) head: Hard Permalloy
Erase head: Ferrite
TR: 43 Diodes: 3
1C: 10 LED: 8
G model: 220 V, 50 Hz
W model: 120/220 V, 50/60 Hz
Q model: 240 V, 50 Hz
18 watts

418(W) x 100(H) x 270(D) mm
(16-1/2" x 3-15/16" x10-5/8)
4.5 kg. (9.9 lbs.)