Page 2
.G.
Contents
F
1.0 TECHNICAL SPECIFICATIONS
2.0 MECHANCIAL ADJUSTMENTS
2.1 Clutches .....:.
2.1.1 Take-up Turntable
2.1 .2 Take-up Turntable
2.1.3 Supply Turntable
2.1.4 Supply Turntable
2.2 Brakes
2.3 Pressure Pad Adiustment . .
2.4 End Stop Mechanism .
2.4.1 Tape Feeler Tension
2.4.2 Adjustment of Tape Feeler
3.0 ALIGNMENT .
3.1 Demagnetlzing
3.2 Blas- and Erase Circuits
3.2.1 Oscillator Frequency . . .
3.2.2 Erase Voltage
3.2.3 Bias Current
4.0 TAPE PATH
4.1 Visual Check
4.2 Mechanlcal adjustment ol tape path . . .
5.0 HEAD ALIGNMENT WITH TANDBERG TEST
TAPES, MODEL 3041X
5.1 Playback head
5.1.1 Height Adjustment
5.1.2 Azimuth Adjustment
5.2 Record Head .
5.2.1 Height Adlustment by Visual
Inspection
5.2.2 Height Adjustment by Track
Measurement . ....
5.2.3. Azimuth Adjustment ...
5.3 Bias Head
5.3.1 Vertical Adjustment ....
5.3.2 Height Adjustment
5.3.3 Horizontal Adjustment
5.4 Erase Head .
5.4.1 Height Adjustment
5.4.2 Azimuth Adjustment
5.5 Model 3021X .
6.0 HEAD ALIGNMENT WITHOUT TANDBERG
TEST TAPES, MODEL 3041X
6.1 Playback Head .
6.1.1 Height Alignment
6.1.2 Azimuth Alignment . ...
6.2 Record Head .
6.3 Bias Head
6.4 Erase Head .
6.4.1 Height Adjustment
6.4.2 Azimuth Adjustment
6.5 Model 3021X .
7.0 TRACK CONTROL
7.1 Model 3041X .
7.1.1 Record Head
7.1.2 Erase Head .
7.1.3 Playback Head
7.2 Modell 3021X .
7.2.1 Erase Head .
7.2.2 Record Head
7.2.3 Playback Head
8.0 ADJUSTMENT AND CONTROL OF
THE AMPLIFIERS ... 11
8.1.1 Playback Level Adjustment ...... 11
8.1.2 Adjustment of Bias Current ...... 11
8.1.3 Record/Playback Level Adiustment 11
8.1.4 Record/Playback Curves ... ..... 11
8.1.5 Distortion ........ 11
8.1.6 Control of Playback Amplifier .... 1'l
8.2 Tape Speed Control .... 12
8.2.1 Using Frequency Meter or Counter 12
8.2.2 Using Transformer and Vacuum
Tube Voltmeter .. ...... . 12
8.2.3 Using Tape of Known Length .... 12
9.0 RECORD/PLAYBACK CURVES ..... 12
9.1 Readjustment ol Record/Playback Level 12
9.2Dlstortlon.... .........12
9.3 Control of Playback and Record
Ampliliers .... ... 12
9.3.1 Playback Amplifier .... ... 12
9.3.2 Record Amplifier ......... 13
10.0 MoDrFtcATroNS ... 15
10.1 Modilications from 11511301230/240 V,
50/60 Hz Operation . .. . 15
10.2 Modification lrom Four-Track to Two-
TrackVersion... ......15
10.3 Component Modification in Series 3000X 15
11. LUBRTCATTON . ...... 15
12.0 ILLUSTRATIONS WITH REFERENCE
PART NUMBERS .. ..... 16
13.0 SPARE PARTS LIST FOR MODEL 3OOOX .. 22
13.1 Mechanical Parts . .. ... 22
13.2 Electrica! Components . . .... . 26
14.0 TABLE OF TRANSISTORS USED IN
MODEL 3OOOX
15.0 BLOCK DIAGRAM FOR MODEL SOOOX . ... 28
16.0 PRINTED WIRING BOARDS AND WIRING
DIAGRAM
16.1 European Version
16.2 U.S. Version
10
10'10
10
11
11
11
11
11
4
4
4
4
4
4
5
6
6
6
6
7
7
7
7
7
7
8
8
8
I
I
9
9
9
9
9
I
9
9
9
9
I
I
10
10
10
10
10
10
10
10
10
10
10
10
28
30
