Panasonic National RQ-2104 User Manual

ORDER NO. GAD8605553C8
Portable Cassette
Portable Cassette Tape Recorder
This is the Service Manual
for the following areas.
--- For all European.
areas except United
Kingdom and F.R.
Germany.
-- For United Kingdom.
-- For Asia, Latin
America, Middle
East and Africa
areas.
- For Australia.
RQ-2745 MECHANISM SERIES
M@ SPECIFICATIONS
Battery; 6V (four “C” size dry batteries)
endeaus AC; 220V, 50Hz
fe] (t}...AC; 240V, 50Hz
eae AC; 110—127/220—240V, 50/60 Hz
Power Requirement:
Motor:
Tape Speed:
Recording System:
Fast Forward and Rewind Time:
Track System:
Power Consumption:
Power Output:
Input:
Output:
Frequency Response:
Speaker:
Dimensions:
Weight:
Electrical governor motor
4.8cm/s
DC bias. Magnet erase :
Approx. 90 seconds with C-60 cassette tape
2 track monaural recording and playback
6W (AC only)
650 mW... RMS (max.)
MIC:
sensitivity
0.25mV/applicable
microphone
impedance
200Q~6002
($3.5)
Monitor;
8Q
($3.5)
100~7,000 Hz
8cm PM dynamic speaker (8Q)
139 mm(W) x 52mm(H) x 249mm (D)
870g without batteries
Design and specifications are subject to change without notice.
= National / Panasonic
Matsushita
Electric
Trading
Co.,
Ltd.
P.O.
Box
288,
Central
Osaka
Japan

Panasonic National RQ-2104 Specifications

General

Type	Portable Cassette Player
Brand	Panasonic National
Model	RQ-2104
Signal-to-Noise Ratio	40 dB
Headphones Output	3.5mm jack
Power Source	4 x AA batteries
Wow and Flutter	0.25%

Summary

Service Manual Overview

Product Specifications

Technical details including power requirement, motor, tape speed, and frequency response.

Device Controls and Disassembly

Controls and Components Identification

Illustrated identification of external controls and components.

Disassembly Instructions

Step-by-step guide for dismantling the cassette tape recorder.

Repair, Calibration, and Parts Information

Motor and Flywheel Fix Procedures

Instructions for repairing the motor and flywheel assemblies.

Alignment and Adjustment Guidelines

Procedures for aligning heads and adjusting tape speed.

Cabinet Parts Location and Listing

Diagram and list of cabinet parts, accessories, and packing materials.

Electronic Schematics

Overall Schematic Diagram

Detailed electronic schematic of the device's internal circuitry.

Schematic Diagram Notes

Explanations and definitions for understanding the schematic.

Circuit Board Details and Parts

Circuit Board Wiring Connections

Diagram showing wiring connections on the circuit boards.

Electrical Component Lists

Lists of resistors, capacitors, transistors, diodes, and ICs.

Switches, Transformers, and Jacks

Details on switches, transformers, and input/output jacks.

Mechanical Components and Specifications

Mechanism Parts Listing and Location

Comprehensive list and diagrams of mechanical parts.

Mechanical Performance Specifications

Specifications for mechanical aspects like pressure roller and tension.