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Panasonic RS-790S User Manual

Panasonic RS-790S
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PRDER
NO.
ARD-711034
MODEL
Hay
i
I
Hue
ool
hn
ut
He
a
mi
wi
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
_—
on
eres
;
ose
“
Transistor:
288
346
(4)
2B
175A
(4)
oe
a
ae
pe
ee
peat
ee
Output
LINE”
1OKQ
GOdB
(2)
"
ape
P
iu
pu
‘
cr
"
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
‘
1
‘nd
.
a”
af
=
2)
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,
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Panasonic RS-790S Specifications

General IconGeneral
BrandPanasonic
ModelRS-790S
CategoryMeasuring Instruments
LanguageEnglish

Summary

Panasonic RS-790S Specifications

Panasonic RS-790S Location of Parts

Panasonic RS-790S 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-790S 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-790S 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-790S Playback Mechanical Operation

Panasonic RS-790S Recording Mechanical Operation

Panasonic RS-790S Fast Forward Mechanical Operation

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

Panasonic RS-790S 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-790S Tape Tension Adjustments

Panasonic RS-790S Brake Power and Pause Brake Adjustments

Adjustment of Pause Brake

Procedure for adjusting the pause brake mechanism timing.

Panasonic RS-790S 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-790S 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-790S 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-790S Circuit Board Details

Conductor Side View

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

Panasonic RS-790S Schematic Diagrams

Panasonic RS-790S Cabinet Parts

Panasonic RS-790S Electrical Parts Location

Panasonic RS-790S Accessories

Panasonic RS-790S Component Packing

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