TANDBERG 12 Manuals

Manuals and User Guides for TANDBERG 12. We have 1 TANDBERG 12 manual available for free PDF download: Service Manual

TANDBERG 12 Service Manual (60 pages)

Tape recorder

Brand: TANDBERG | Category: VCR | Size: 7.26 MB

Table of Contents
3
Technical Specification
4
Outputs
5
Speakers
5
Bass Control
5
Treble Control
5
The Function of the Controls
6
The Input and Output Terminals
7
The Input Terminals and the FM-MX Filter Switch
7
The Output Terminals and the Balance Adjustment
7
The Mechanism, Detailed Description and Adjustment Instruction
8
Microphone Inputs
8
Top View, with Top Cover Removed
8
The Operating Lever
9
The Motor Switch
9
Adjustments
9
T H E O P E R O L I N G L E V E R
9
The Eccentric Segment
10
The Pressure Wheel Assembly
10
The Upper Mounting Plate
10
The Pressure Wheel Assembly, Exploded View
10
Mounting of the Heads with the Pressure Wheel Assembly
11
The Lower Mounting Plate
11
The Tape Brake
12
The Trip Bar
12
The Turntable Assemblies
12
The Supply Turntable Assembly
13
The Tape Tight Tension
13
The Supply Pulley Disc with the Clutch Lever
13
The Take-Up Turntable Assembly
14
Horizontal and Vertical Alignments of the Turntables
15
Clutch Alignments
15
Fast Rewind
16
The Supply Turntable
16
The Take-Up Turntable
16
Fast Wind
16
Normal Forward Drive
17
Neutral
17
Free
18
The Motor Pulley
18
Threading of the Rubber Drive Belt
18
The Speed Transfer Wheel
18
The Lifting Mechanism
19
The Flywheel with the Capstan
20
The Brake for the Flywheel
20
The Speed Change Mechanism
20
The Momentary Start-Stop Feature
21
The Pressure Pad
22
The Automatic End of Switch
22
The Revolution Counter
22
Assembling the Top Cover
22
The Main Electronic Units, Block Diagram
24
Inputs
24
The Input Circuits
24
The Equalizing Amplifier in Record Position, Schematic
25
T H E P R E S S U R E W H E E L O S S E M B L y L
25
T H E T O P E B R O K E
25
T H E T R I P B O R T
25
T H E T U R N F O B L E O S S E M B L I E S T
25
F O S T R E W I N D L
25
N O R M Q L F O R W O R D D R I V E
25
T H R E O D I N G O F T H E R U B B E R D R I V E B E L T
25
T H E L I F T I N G M E C H O N I S
25
T H E F L y W H E E L W I T H I H E C O P S T O N
25
The Equalizing Amplifier in Playback Position
26
The Equalizing Amplifier in AMPLIFIER Position
27
The Power Output Amplifier
28
The Playback Pre-Amplifier
29
The Record Level Indicator Circuit
29
The Oscillator, Bias and Erase Circuit
30
The Power Supply
30
The Function Selector Switch
31
The Speaker Selector Switch
32
Monaural Recording on Ch. 1 or Ch. 2
32
Mixing During Monaural Recording
33
Stereo Playback
33
Stereo Amplifier
33
Stereo Recording
33
Head Alignment and Track Control with Tandberg Test Tapes
34
Sound on Sound
34
Preferred Instruction for Sound on Sound Recording
34
Head Alignment Without Tandberg Test Tapes
35
Demagnetizing
35
The Adjustable Tape Guides
35
The Erase Head
35
Track Control
36
Adjustment of the Output Level
36
Quiescent Current
36
The Bass Control
36
Adjustment of the Osc. Frequency and the Bias
37
Bottom View of the Tape Recorder
37
Connections
37
Distortion
38
Balance Adjustment for the Pre-Amp. Outputs
38
Adjustment of the Equalization Coils L1 and L2
38
Control of the Recording Curves
38
Control of the Playback Curves
39
Control of the Total Frequency Response
39
Power Output Control
39
Speed Test
39
Electrical Modifications Introduced to the Model 12 Tape Recorder
40
Modifications from Four-Track to Two-Track Models
41
Parts List
41
Mechanical Parts
41
T H E E Q U O L I Z I N G O M P L I F I E R I N P L O y B O C K P O S I T I O
44
L H E P O W E R O U L P U T O M P L I F I E R
45
T H E R E C O R D L E V E L I N D I C O T O R C I R C U I T
45
Electrical Parts
46
T H E R E C O R D / P L O y B O C K H E O D
46
Resistors
47
A D I U S T M E N T O F I H E P O W E R O U T P U F O M P L I F I E R
56
A D I U S F M E N T O F T H E O U T P U I L E V E L
57
T H E Q U I E S C E N T C U R R E N L
57
Lubricating
58
The Motor
58
The Self-Lubricating Bearings
58

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