Aiwa AD-R450 Service Manual

AIWA
S/M Code No. 84-025
DATE OF ISSUE 9/1984
SERVICE MANUAL
STEREO CASSETTE
OECK
M O D E L I M O .
AD-R450
T Y P E . H B j H U B j H J B j C B j E B j K B j G B j Z
SPECIFICATIONS
Type
Track format
Power supply
Power
consumption
Frequency
response
Signal-to-noise
ratio
Wow and flutter
Tape speed
Rewind time
Fast forward time
Stereo cassette tape deck
4 tracks 2 channels
AD-R450 E, Z
AC 220 V, 50/60 Hz
AD-R450 K, G
AC 240 V, 50/60 Hz
AD-R450 U, C
AC 120 V, 60 Hz
AD-R450 H, HU, HJ
AC 120 V/220 V-240 V switchable,
50/60 Hz
15 W
METAL tape: 20-18,000 Hz
Cr02 position tape: 20— 17,000 Hz
NORMAL tape: 20-16,000 Hz
73 dB (METAL tape DOLBY C NR
ON)
According to DIN 45 500 0.1%
0.04% (WRMS)
4.8 cm/sec. (1 -7/8 tps)
70 sec. (C-60)
70 sec. (C-60)
Recording system
Erase system
Motor
Head
Inputs
Outputs
Dimensions
Weight
Accessories
AC bias (frequency 85 kHz)
AC erase
DC Servomotor x 1, DC Motor x 1
DX head
LINE IN maximum input
sensitivity: 50 mV (over 50 kfi)
DIN max sensitivity (Z model only):
0.1 mV/kfi (3.3 kfi)
LINE OUT standard output level:
0.4 V(0VU); suitable load
impedance: over50 kfi;
DIN standard level (Z model only):
0.4 V(0VU)
Headphones: 8—32 ii
420(W) X110(H) x300(D) mm
4.4 kg
Stereo pin cord (2)
Design and specifications are subject to change without
notice.
Noise reduction system manufactured under license
from Dolby Laboratories Licensing Corporation.
Dolby and the □□ symbol are trademarks of Dolby
laboratories licensing corporation.

Aiwa AD-R450 Specifications

General

Type	Cassette Player
Brand	Aiwa
Model	AD-R450
Track System	4-track, 2-channel stereo
Tape Speed	4.76 cm/s
Dimensions	320 x 100 x 240 mm
Weight	2.5 kg
Motor	DC Motor
Tape Type	Type I
Input	Line In
Output	Line Out
Playback Functions	Play, Stop, Rewind, Fast Forward
Power Source	50/60Hz
Battery Type	AA
Headphones Output	3.5 mm

Summary

Product Specifications and Performance

Technical Specifications

Details device type, power, frequency response, and other core technical parameters.

Practical Service Figures

Lists key performance measurements like wow/flutter, torque, and signal-to-noise ratio.

Service and Safety Instructions

Service and Safety Instructions

Guidelines for safe handling, repair, and maintenance of the device.

Component Identification and Parts

Electrical Parts List

Lists integrated circuits, transistors, capacitors, and board-specific components.

Exploded Views

Diagrams illustrating the physical layout and assembly of internal components and circuit boards.

Mechanical Parts List

Comprehensive list of mechanical parts, including cabinet, knobs, levers, and springs.

Circuitry, Wiring, and Adjustments

Schematic Diagrams

Detailed circuit diagrams showing the electronic architecture and component connections.

Wiring Diagrams

Illustrates the wiring connections between different circuit boards and internal components.

Service Adjustments

Step-by-step procedures for calibrating bias, gain, and frequency response.

Accessories

Included Accessories

Lists accessories provided with the device, such as instruction booklets and cords.