Panasonic RX-F80 - User Manual

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ORDER

NO.

RD82041987C3

Service

Manual

Radio

Cassette

RX-F80

FM-AM-FM

STEREO

RADIO

CASSETTE

RECORDER

SPECIFICATIONS

General:

Power

Requirement:

AC;

110~115/115~127/200~220/

Dimensions:

[Amp./Speaker

Part]

230~250

50/60

391

(W)

126

(H)x99

(D)

Battery;

[Amp./Speaker

Part]

(1543

x431x333)”

(six

‘‘C”’

size

Flashlight

[Tuner/Deck

Part]

Batteries)

147

(W)

x88

(H)x41.5

(D)

(National

UM-2

equivalent)

(538x318

x18)”

[Tuner/Deck

Part]

Weight:

[Amp./Speaker

Part

with

Tuner/Deck

Part]

(two

“‘AA”’

size

Penlight

2.1

02)

without

batteries

Batteries)

[Tuner/Deck

Part]

(National

UM-3

equivalent)

430

(15

oz)

without

batteries

Car

battery;

with

optional

car

adaptor

Radio

Section:

RP-917

Radio

Frequency

Power

Consumption:

(AC

only)

Range:

FM;

88~108

MHz

Power

Output:

Built-in

Speaker;

Wx2)...

PMPO

AM;

525~1605

kHz

(571~187

(3.5

WxX2)...

RMS

Intermediate

Frequency:

FM;

10.7

MHz

(max)

AM;

455

kHz

Headphones;

(40

mWx2)...

RMS

Sensitivity:

FM;

52/50

output

(max)

AM;

100%V/m/50

output

Speaker:

(4”’)

Dynamic

Speaker

(320)

Tape

Deck

Section:

Input:

[Amp./Speaker

Part]

Frequency

Range:

60~

10,000

(with

normal

tape)

and

60~11,000

(with

CrOz

tape)

[Tuner/Deck

Part]

Recording

system:

bias,

MAGNET

erase

Mic;

sensitivity

0.25

mV/applicable

Tape

Speed:

4.8cm/s,

(1¢

ips)

microphone

impedance

200~6002

Wow

and

Flutter:

0.3%

(WRMS)

Output:

[Amp./Speaker

Pari]

Program

Time:

hour

with

C-60

cassetie

tape

Line

Out;

sensitivity

420

mV/10

under

Track

System:

4-track

channel

stereo

recording

and

EXT

SP;

3~80

playback

Headphones;

8~320

[Tuner/Deck

Part]

Headphones;

3220

Specifications

are

subject

change

without

notice.

Matsushita

Electric

Trading

Co.,

Ltd.

National

Panasonic

cee

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Overview

Function Description
Important Technical Specifications
Usage Features
1. Tuner/Deck Part Controls
2. Amplifier/Speaker Part Controls
Maintenance Features

This document describes the National Panasonic RX-F80 Radio Cassette Recorder, a portable stereo system designed for both radio reception and cassette tape playback/recording. It features a detachable tuner/deck part, allowing for flexible usage.

Function Description

The RX-F80 is a versatile audio device combining an FM-AM-FM stereo radio tuner with a cassette tape recorder. It supports stereo recording and playback on cassette tapes and offers both AC and battery power options for portability. The unique detachable design separates the tuner/deck from the amplifier/speaker unit, enhancing its adaptability.

Important Technical Specifications

General

Power Requirement:
- AC: 110-115V, 115-127V, 200-220V, 230-250V at 50/60 Hz.
- Battery:
  - Amplifier/Speaker Part: 9V (six "C" size flashlight batteries, National UM-2 or equivalent).
  - Tuner/Deck Part: 3V (two "AA" size penlight batteries, National UM-3 or equivalent).
- Car Battery: With optional car adaptor RP-917.
Power Consumption: 13W (AC only).
Power Output:
- Built-in Speaker: 12W PMPO (6W × 2), 7W RMS (3.5W × 2).
- Headphones: 80mW RMS (40mW × 2) (max).
Speaker: 10 cm (4") PM Dynamic Speaker (3Ω).
Input:
- Amplifier/Speaker Part: AC IN and DC IN.
- Tuner/Deck Part: Mic (sensitivity 0.25mV / applicable microphone impedance 200-600Ω).
Output:
- Amplifier/Speaker Part: Line Out (sensitivity 420mV / 10kΩ under).
- EXT SP: 3-8Ω.
- Headphones: 8-32Ω.
- Tuner/Deck Part: Headphones (32Ω).
Dimensions:
- Amplifier/Speaker Part: 391mm (W) × 126mm (H) × 99mm (D) (15 3/8" × 4 15/16" × 3 7/8").
- Tuner/Deck Part: 147mm (W) × 88mm (H) × 41.5mm (D) (5 3/4" × 3 7/16" × 1 5/8").
Weight:
- Amplifier/Speaker Part with Tuner/Deck Part: 2.1kg (4lb 10oz) without batteries.
- Tuner/Deck Part: 430g (15oz) without batteries.

Radio Section

Radio Frequency Range:
- FM: 88-108 MHz.
- AM: 525-1605 kHz (571-187m).
Intermediate Frequency:
- FM: 10.7 MHz.
- AM: 455 kHz.
Sensitivity:
- FM: 5µV / 50mW output.
- AM: 100µV/m / 50mW output.

Tape Deck Section

Frequency Range:
- 60-10,000 Hz (with normal tape).
- 60-11,000 Hz (with CrO2 tape).
Recording System: AC bias, MAGNET erase.
Tape Speed: 4.8 cm/s (1 7/8 ips).
Wow and Flutter: 0.3% (WRMS).
Program Time: 1 hour with C-60 cassette tape.
Track System: 4-track 2 channel stereo recording and playback.

Usage Features

The RX-F80 is designed for user convenience with clearly labeled controls and a modular design.

Tuner/Deck Part Controls

Recording Indicator (RECORD): Illuminates during recording.
Record Button (RECORD): Initiates tape recording.
Headphone Jack (PHONES) 32Ω P.B.: For private listening.
Tape Selector (TAPE) (NORMAL/METAL): Selects tape type for optimal recording/playback.
Playback Button (PLAY): Starts tape playback.
Function Selector (SELECTOR) (TAPE/RADIO): Switches between tape and radio modes.
Fast Forward/Cue Button (FF/CUE): Advances tape quickly.
Microphone Jacks (MIC)(L, R): Connect external microphones for stereo recording.
FM Mode Selector/Beat Proof Switch (FM MODE/BEAT PROOF) (MONO II/ST I): Selects FM stereo or mono, and adjusts for beat interference.
Pause Button (PAUSE): Temporarily stops tape operation.
Tone Selector (TONE) (LOW/HIGH): Adjusts audio tone.
Stop/Eject Button (STOP/EJECT): Stops tape operation and opens the cassette compartment.
Band Selector (BAND) (FM/AM): Selects radio band.
Tuning Control (TUNING): Dials in radio stations.
Built-in Microphone (MIC): For convenient voice recording.
Tuning Indicator (TUNING): Helps precisely tune radio stations.
FM Stereo Indicator (FM STEREO): Illuminates when an FM stereo broadcast is received.
Balance Control (BAL): Adjusts left/right channel balance.
Volume Control (VOL): Adjusts overall audio volume.
Tape Counter and Reset Button (COUNTER): Tracks tape position and resets to zero.
Rewind/Review Button (REW/REV): Rewinds tape quickly.
Cassette Compartment: Holds the cassette tape.
Battery Indicator (BATTERY): Shows battery status.
Battery Compartment: Located inside the cassette compartment for the tuner/deck batteries.

Amplifier/Speaker Part Controls

Power Switch (POWER) (ON/OFF): Turns the unit on or off.
Ambience Switch (AMBIENCE) (ON/OFF): Enhances the stereo sound field.
Release Button (RELEASE): Detaches the tuner/deck part.
Bass Control (BASS): Adjusts low-frequency audio.
Treble Control (TREBLE): Adjusts high-frequency audio.
Balance Control (BALANCE): Adjusts left/right speaker balance.
Volume Control (VOLUME): Adjusts overall audio volume.
Built-in Speaker 10 cm (4") (3Ω): Integrated speakers for stereo sound.
Power Indicator (POWER): Illuminates when the unit is powered on.
Headphone Jack (PHONES) 8-32Ω: For private listening with the amplifier/speaker unit.
External Speaker Jacks (L, R) (EXT SP IMP 3-8Ω): Connect external speakers.
Voltage Selector Switch (VOLTAGE SELECTOR): Adapts the unit to different AC power voltages.
Line Output Jacks (LINE OUT) 420mV/10kΩ Under: Connects to external amplifiers or recording devices.
AC Socket (AC IN ~): Connects to AC power supply.
DC Input Jack (DC IN 9V): Connects to a DC power source.
Exclusive Stereo Headphones: Provided for optimal listening experience.
Line-in Cord: For connecting external audio sources.
Telescopic Antenna: Extends for improved FM radio reception.

Maintenance Features

The manual provides detailed instructions for disassembly and reassembly, crucial for servicing and repairs.

Disassembly Instructions (Tuner/Deck Part)

Remove Screws (2×3): (A)×2.
Remove Cassette Cover Ass'y: In the direction of the arrow (B)×1.
Remove Screws (2×8): (C)×1.
Remove Rear Cabinet Ass'y: (D)×5.
Remove Ornament: In the direction of the arrow (E)×1.
Remove Screws (1.7×4): (F)×2.
Remove Screws (2×4): (G)×2.
Remove Circuit Board: (H)×2.
- Reassembly Note: Set selectors (switches) as follows: TAPE→NORMAL, FUNCTION→TAPE, MODE/BEAT PROOF→MONO/II, TONE→LOW, BAND→FM.

Disassembly Instructions (Amp/Speaker Part)

Remove Knobs: (I)×6.
Remove Front Cabinet Ass'y: (J)×6.
Remove Circuit Board Ass'y: (K)×8.

Dial Threading

A diagram illustrates the correct threading of the dial cord, specifying a cord length of 116.5 ± 1 mm (4-9/16") and indicating that the tuning shaft requires 3 turns.

Measurements and Adjustments

The manual includes comprehensive alignment instructions for both radio and tape deck sections, ensuring optimal performance after servicing.

Alignment Instruction Precautions:
1. Set volume control to maximum.
2. Set Balance control to center.
3. Set tone switch to high.
4. Set band switch to AM or FM.
5. Set tape/radio selector to radio.
6. Set power source voltage to 3V DC.
7. Output of signal generator should be no higher than necessary to obtain an output reading.
AM Alignment (IF and RF): Instructions for adjusting IF (T2) and RF (L4, L3, CT2, CT1) for maximum output.
FM Alignment (IF and RF): Instructions for adjusting IF (T1, T3) and RF (L2, L1, CT4, CT3) for maximum output.
Audio Adjustment: Instructions for adjusting azimuth (azimuth screw) for maximum output and bias current (VR2) to 2.3-3.3mV.
Separation Alignment: Instructions for adjusting VR1 for 19kHz (±50Hz) reading on an electronics counter.

The detailed parts lists, including electrical, cabinet, mechanism, and headphone components, along with circuit diagrams and wiring connection diagrams, facilitate accurate identification and replacement of parts during maintenance.