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Bang & Olufsen Beocord 3500 User Manual

Bang & Olufsen Beocord 3500
58 pages
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Bang
&Olufsen
Beocord
4500
Type
4961,
4962,
4963,
4964,
4965
BEOCORD
3500
Type
4966-4967-4968-4969-4970
SERVICEANVISNING
SERVICE
MANUAL
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Bang & Olufsen Beocord 3500 Specifications

General IconGeneral
ModelBeocord 3500
Track System4-track, 2-channel stereo
Tracks2
Tape Speed4.76 cm/s
Recording SystemAC bias
Wow and Flutter0.06 %
Dimensions42 x 7 x 28 cm
Weight4.3 kg
Frequency Response30 Hz - 18 kHz
Signal-to-Noise Ratio> 64 dB
InputsLine In
OutputsLine Out

Summary

Technical Specifications

Control System Block Diagram

Signal Path Diagrams

Schematic Diagrams

Diagram A: AF and Control

Schematic diagram for AF and Control circuits.

Diagram B: Dolby NR, Bias, Tape Type Logic

Schematic diagram for Dolby NR, Bias, and Tape Type Logic.

Diagram C: Control and Operation

Schematic diagram for Control and Operation.

Diagram C: Tape Deck Control

Schematic diagram for Tape Deck Control.

List of Electrical Parts

PCB 01: AF & Control Parts

List of electrical parts for PCB 01 (AF & Control).

PCB 02: Dolby NR Parts

List of electrical parts for PCB 02 (Dolby NR).

PCB 03: Operation Panel Parts

List of electrical parts for PCB 03 (Operation Panel).

Standard Resistor Values

List of Mechanical Parts

Mechanical Adjustments

Height and Azimuth Adjustment

Procedure for adjusting tape head height and azimuth.

Tape Guide Height Adjustment

Procedure for adjusting tape guide height.

Azimuth Adjustment (Side 1 & 2)

Procedure for adjusting azimuth for both tape sides.

Tape Head Height and Thrust Roller

Electrical Adjustments

Speed and Playback Level Adjustment

Procedure for adjusting speed and playback level.

Recording Adjustments

Recording Boost Adjustment

Procedure for adjusting recording boost.

Level Meter Calibration

Procedure for calibrating the level meter.

HX Filter Adjustment

Procedure for adjusting the HX filter.

Bias Filter Adjustment

Procedure for adjusting the bias filter.

Cr Bias Adjustment

Procedure for adjusting Cr bias.

Bias and Recording Current Adjustments

Fe/MP Bias Adjustment

Procedure for adjusting Fe/MP bias.

Disassembly Procedures

Panel Disassembly

Insulation Test

Beocord 3500 Mechanical Parts

Mechanical Parts List (Continued)

Service Tips

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