TANDBERG 9200xd Manuals

Manuals and User Guides for TANDBERG 9200xd. We have 1 TANDBERG 9200xd manual available for free PDF download: Service Manual

TANDBERG 9200xd Service Manual

TANDBERG 9200xd Service Manual (58 pages)

logic circuits description

Brand: TANDBERG | Category: Tape Deck | Size: 38.53 MB

Table of Contents

Contents
2
Logic Circuit Types and Triggering Methods
3
And-Gate
3
Inverter, Not-Function
3
Nand-Gate
3
Flip-Flop, Bistable Multivibrator
4
Monostable Multivibrator
4
Flip-Flop Circuit, Truth Table and Symbol
4
Monostable Circuit and Symbol
4
DC and AC Triggering
5
Method of Operation for the Monostable Circuit Brake Monostable
5
DC/AC Triggering of a Bistable and a Monostable Multivibrator
5
DC Control
6
Inhibitor Circuit
6
General Description
7
Power Switch
7
Mode Buttons
7
The End Stop
8
The Brake Solenoid
8
Pinch Roller Solenoid
8
Wind Relay and Rewind Relay
8
Speed and Direction Flip-Flops
9
The Meter Switch
10
Meter-Switch Operation During Record
10
Meter-Switch Operation During Playback
10
The Operating Modes
11
The Stop Mode and Power Switch-On
11
Stop Lamp
11
Braking Sequence after Power Switch on
11
The Stop Mode and Power Switch-Off
12
Power Off, from Play
12
To Wind from Rewind
18
From Wind to Rewind
18
Play from Wind
18
Table of Oprating Sequences
19
Function Control Logic
21
Board for Function Control Logic
22
The Signal Path to Stop from Power on
25
The Signal Path to Play from Stop
26
Mechanical and Electrical Adjustments
27
Dismantling
27
Removing the Front Plate
27
Removing the Cabinett Ad Bottom Cover
27
Regular Maintenance
28
Cleaning the Heads
28
Where to Clean
28
Mechanical Servicing
29
Mechanical Adjustments
29
Lubrication
29
Degaussing
29
Brake Solenoid
30
Turntables
31
Pinch Roller
31
Checking the Height of the Turntable
31
Removing the Turntable
31
Tape Path Adjustments
32
Visual Check
32
Aligning the Hum Shield for the Playback Head
32
Adjustable Tape Guides
32
Pinch Roller Adjustments
33
Checking and Re-Adjecting the Flutter Roller
33
Parallelism Adjustment
33
Azimuth Adjustment
33
Erase and Bias Circuits
34
Oscillator Frequency
34
Checking the Erase Voltage
34
Heads
34
Head Alignment with Tandberg Test Tapes
35
Playback Head
35
Record Head
35
Height Adjustments
35
Bias Head
36
Erase Head
36
Horizontal Adjustment
36
Track Measurement, Four-Track Record Head
36
Head Alignment Without Test Tapes - 4 Tracks
37
Head Alignment - 2 Tracks
37
Exchanging Heads and Modification from Four Tracks to Two Tracks
38
Changing from 220V/50Hz to 115V/60Hz
38
Changing the Photo-Electric End-Stop
39
Adjustment Table Model
40
Location of Test Points for Dolby Levels on the Main Board
40
Adjustment of R11 on Dolby Decoder Boards XA9 and XA10
40
Block Diagram
41
Main Board Circuit Diagram
45
Dolby Encoder
47
Dolby Decoder
48
DC Voltage Reg and Relay Board
52
Oscillator Board
53
Equal Record Amp
54
Output Amp Board
55
Equal Playback Amp Model
56

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