Panasonic RS-790S - User Manual

PRDER NO. ARD-711034 MODEL
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SOLID STATE 4-TRACK STEREO
TAPE RECORDER
move. RS-790S
SPECIFICATIONS
Power Source: ' AC: 117 volts 60 cps Frequency Response: _ 40~18,000 cps at 7-1/2 ips
Power
Consumption:
Approx.
50
W
40~10,000
cps
at
3-3/4
ips
Music
Power
Output:
BWx2
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ose
“
Transistor: 288 346 (4) 2B 175A (4) oe a ae
pe ee peat ee Output LINE” 1OKQ GOdB (2)
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ape
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Diode & Rectifier: OA 70 (2) FR-1M (1) 25F (1) “EXT. SP” 8Q (2)
Recording System: AC bias 50 Ke “HEADPHONE” 8© (1)
Erasure System: AC erase Program Time: 12 hours for 7” 150% tape at
Reel Size: 7” max. ; 1-7/8 ips
Track System: 4 track stereo system Recording Level Indicator: VU meter
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Tape Speed: 3 speeds, 7-1/2, 3-3/4 and Built-in Speaker : 7” x5” dynamic speaker (
1-7/8 ips Dimensions: 16-11/16” (W) x 17-3/167 (H) x
9” (D)
Weight: Approx. 38-1/4 tb
MATSUSHITA ELECTRIC CORP. OF AMERICA
Pan-Am Tiv'g., 200 Park Ave., New York, N.Y. 10017
HAWAII/MATSUSHITA ELECTRIC OF HAWAII INC., 205 Kalihi St. Honolulu, Hawaii 96819
CANADA/MATSUSHITA ELECTRIC OF CANADA LTD., 1054 Kipling Ave. North, Rexdale, Ont,

Summary

Panasonic RS-790 S Specifications

Panasonic RS-790 S Location of Parts

Panasonic RS-790 S Block Diagrams of Electrical Circuits

Recording Circuit Diagram

Block diagram illustrating the recording circuit path and components.

Playback Circuit Diagram

Block diagram illustrating the playback circuit path and components.

Panasonic RS-790 S Disassembly Instructions

How to Remove Panel

Step-by-step guide for removing the front panel of the tape recorder.

How to Remove Body Case

Step-by-step guide for removing the main body case of the tape recorder.

Panasonic RS-790 S Tape Transport Operations

General Operating Instructions

Overview of the tape recorder's general operating principles and controls.

Playback Operation

Instructions for operating the tape recorder in playback mode.

Recording Operation

Instructions for operating the tape recorder in recording mode.

Fast Forward Operation

Instructions for operating the tape recorder in fast forward mode.

Panasonic RS-790 S Playback Mechanical Operation

Panasonic RS-790 S Recording Mechanical Operation

Panasonic RS-790 S Fast Forward Mechanical Operation

Panasonic RS-790 S Instant Stop (Pause Control) Operation

Panasonic RS-790 S Mechanical Adjustments

Pressure of Pressure Roller Adjustment

Procedure for adjusting the pressure of the pressure rollers against the capstan.

Pressure of Head Pad Adjustment

Procedure for adjusting the pressure of the head pad against the tape.

Panasonic RS-790 S Tape Tension Adjustments

Panasonic RS-790 S Brake Power and Pause Brake Adjustments

Adjustment of Pause Brake

Procedure for adjusting the pause brake mechanism timing.

Panasonic RS-790 S Head Adjustments

Head Height Adjustment

Procedure for adjusting the vertical height of the tape heads.

Head Angle Adjustment

Procedure for adjusting the horizontal angle of the tape heads.

Panasonic RS-790 S Amplifier Adjustments

Bias Oscillator Frequency Adjustment

Procedure for setting the correct bias oscillator frequency.

Bias Oscillator Current Adjustment

Procedure for setting the correct bias oscillator current.

Panasonic RS-790 S Erasing Current and Recording Level

Recording Level Adjustment

Procedure for adjusting the recording level meters.

Trouble Shooting Guide 1: Recording Issues

Recording Unsatisfactory

Diagnosing causes for unsatisfactory recording performance.

Trouble Shooting Guide 2: Playback Issues

Playback Condition Unsatisfactory

Diagnosing causes for unsatisfactory playback performance.

Trouble Shooting Guide 3: Power and Motor Issues

Tape Recorder Does Not Function

Troubleshooting steps for when the tape recorder fails to operate.

Trouble Shooting Guide 4: Mechanical Transport Issues

Motor Does Not Rotate

Diagnosing reasons why the motor fails to rotate.

Trouble Shooting Guide 5: Automatic Function Issues

Automatic Reverse & Stop Issues

Diagnosing problems with automatic reverse and stop functions.

Panasonic RS-790 S Circuit Board Details

Conductor Side View

Diagram showing the conductor side of the circuit board with voltage points.

Panasonic RS-790 S Schematic Diagrams

Panasonic RS-790 S Cabinet Parts

Panasonic RS-790 S Electrical Parts Location

Panasonic RS-790 S Accessories

Panasonic RS-790 S Component Packing

Panasonic RS-790S Specifications

General

Brand	Panasonic
Model	RS-790S
Category	Measuring Instruments
Language	English