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Manuals
Brands
Tascam Manuals
Tape Deck
BR-20 Series
Maintenance manual
Table Of Contents - Tascam BR-20 Series Maintenance Manual
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Also See for BR-20 Series
:
Operating and maintenance instructions manual
(33 pages)
,
Operation & maintenance manual
(32 pages)
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Table Of Contents
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Contents
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Table of Contents
Table Of Contents
3
Parts Lists
4
Parts Location Illustrations
5
View With Top Rear/Bottom Panel Removed
6
Test Equipment
7
Voltage Conversion
7
Voltage Selector Location Diagram
7
Front Panel Removal
8
Control Panel Removal
8
Side Panels Removal
9
Top Rear/Connector/Lower Rear Panels Removal
9
Screw Locations For Side And Top Rear Panel Removal
9
Screw Locations For Connector And Lower Rear Panel Removal
9
Bottom Panel Removal
10
Fuse Replacement
10
Mechanical Checks And Adjustments
11
Brake Mechanism
11
Brake Band-Drum Clearance Adjustment Diagram
11
Brake Torque/Brake Check
11
Brake Torque Measurement/Adjustment
12
Pinch Roller Pressure Check/Adjustment
12
Capstan Shaft Tolerance Adjustment
12
Reel Table Height Adjustment
13
Rape Tension Servo
13
Tape Tension In Edit Mode Check/Adjustment
13
Tape Tension Adjustment Resistors View
13
Play Tape Tension Check/Adjustment
14
Fast Forward/Rewind Tape Tension Check/Adjustment
14
Tape Speed/"Fix" Tape Speed Check/Adjustment
14
"Ext" Speed Check/Adjustment
14
Fast Winding Speeds Check/Adjustment
15
Wow And Flutter
15
Tape Positioning Check And Fine Adjustment
15
Tension Roller Height Adjustment
16
Head Alignment
16
Head-Tape Contact
16
Erase Head/Record And Sync Repro Heads
16
Head Azimuth
17
Amplifier Checks And Adjustments
18
Nominal Input/Output Levels
19
Level Controls
19
Amp. Check/Adjustment
19
Reproduce Level
19
At High/Low Tape Speed
20
Bias Tuning And Bias Trap Adjustment
20
Reproduce Frequency Response
20
Bias Tuning (L4)
21
Bias Trap Adjustment (U9)
21
Record Bias
21
Record Level Check/Adjustment
22
Overall Frequency Response Check/Adjustment At High/Low Speed
22
Overall Distortion
23
Overall Signal-To-Noise Ratio
23
Erasure
24
Headphones Output Level
24
Crosstalk
24
Time Code Channel Adjustments (Br-20T Only)
25
Reproduce Level Set
26
Output Level/Bias Tuning (L4)/Bias Trap (U13)
26
Input Level/Record Bias/Record Level
26
Crosstalk Suppression
26
Crosstalk From Audio To Time Code Channels
27
Adjustment Procedure
27
Checks And Adjustments Chart
28
Optional Modifications
30
Dip-Switch Locations Diagram
30
Parts List
31
Mechanics - Exploded View-1
31
Mechanics - Exploded View-2
33
Mechanics - Exploded View-3
35
Mechanics - Exploded View-4
37
Mechanics - Exploded View-5
39
Electronics: Control Pcb Ass'y View
42
Electronics: Mother Pcb Ass'y View
43
Electronics: Operation Key Pcb Ass'y View
44
Electronics: Operation Cpu Pcb Ass'y
45
Electronics: R/P Ampl Pcb Ass'y View
46
Electronics: Amp Cont Pcb Ass'y
47
In/Out Ampl Pcb Ass'y View
48
Capstan Servo Pcb Ass'y View
49
N Filter Pcb Ass'y (J, Us, C, Ge)/(E, Uk, A)
49
Ps Pcb Ass'y
50
Vr Pcb Ass'y View
51
Phone Ampl Pcb Ass'y View
51
Speed Sw Pcb Ass'y View
51
Phone Vr Pcb Ass'y View
52
Joint Pcb Ass'y View
52
Jack Pcb Ass'y View
52
Sensor L/R Pcb Ass'y/Pg Pcb Ass'y/Transistor Pcb Ass'y View/Speaker Sw Pcb Ass'y (Br-20N - 20T)
52
Tc Ampl Pcb Ass'y (-20T Only)
53
Coil A/B Pcb
53
Tc In/Out Pcb Ass'y (-20T Only)
53
Control Pcb Assy Parts List
54
Mother Pcb Assy Parts List
54
Operator Key Pcb Assy Parts List
55
R/P Ampl Pcb Assy Parts List
55
Operator Cpu Pcb Assy Parts List
55
Amp Cont Pcb Assy Parts List
56
In/Out Ampl Pcb Assy Parts List
56
Capstan Servo Pcb Assy Parts List
56
N Filter Pcb Assy Parts List
56
Ps/Vr Pcb Assy Parts List
57
Phone Ampl Pcb Assy Parts List
57
Speed Sw Pcb Assy/Phone Vr Pcb Assy/Jack Pcb Assy/Joint Pcb Assy Parts List
58
Sensor L/R Pcb Assy Parts List
58
Pg Pcb Assy Parts List
58
Transistor Pcb Assy Parts List
58
Tc Ampl Pcb Assy (-20T Only) Parts List
59
Speaker Sw Pcb Assy (Br-20N (Us, C, J), -20T (J)) Parts List
59
Tc In/Out Pcb Assy (-20T Only)
59
Schematic Drawings
60
Wiring Diagram
60
Mother Pcb Assy Schematic Drawing
61
R/P Ampl Pcb Assy Schematic Drawing
62
Control Pcb Ass'y Schematic Drawing
64
Operation Cpu Pcb Assy, Operation Key Pcb Assy, Speed Sw Pcb Assy Schematic Drawing
65
Ps Pcb Assy Schematic Drawing
66
Amp Cont Pcb Assy Schematic Drawing
67
Tc Ampl Pcb Assy (-20T Only) Schematic Drawing
68
Capstan Servo Pcb Assy Schematic Drawing
69
Mechanism Section Pcb Assy Schematic Drawing
70
Vr Pcb Assy Schematic Drawing
71
In/Out Ampl Pcb Assy Schematic Drawing
72
Phone Ampl Pcb Assy, Phone Vr Pcb Assy Schematic Drawing
73
Ic Internal Block Diagrams
74
Cmos Mpu/Cmos Programmable Peripheral Interface/32768-Word B-Bit Uv Erasable And Programmable Rom Schematic Drawings
75
Numeral Display/8-Bit Multiplying Ditigal-To-Analog Converter Schematic Drawings
75
Regulated Voltage Supply/Voltage Detect Alarm Circuit Schematic Drawing
75
Y-F/F-V Converter Schematic Drawing
75
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