Name: OTARI MTR-10II Series
Brand: OTARI
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Parts No.

053-088

lflOfj[j]H

MTR-10 II

and

1211

SERIES

PRODUCTION

TAPE

RECORDERS

OPERATION AND MAINTENANCE MANUAL

TR-l

O-C

Over

bridge

Model

Edition

No.6

Printed:

May

1989

Safety Instructions2
Table of Contents4
Important Notice9
Newly Added Operation with PB-4GEA Master CPU PCB Assembly12
Brake Stopper Kit Parts List14
Brake Stopper Kit Installation14
Brake Stopper Kit Adjustment15
Using this Manual17
Model List17
Section 1: Introduction17
Product Overview19
Otari Mtr-10 and Mtr-12 Series Master Production Recorders19
Product View22
Reference Photographs22
Control Panel View25
Tape Transport Controls View26
2-Channel Rear Panel Connectors26
Auto Locator View27
Remote Control Box View27
Inspection29
Section 2: Installation29
Transport Panel Release Lever31
Function Selection on Master CPU PCB Assembly37
Connections39
Line Input and Line Output39
XLR Cable Wiring for Audio Connections39
Interconnect Cable for Optional Auto Locator40
Audio, Power and External Control/Sync Connections40
Interconnect Cable for Optional Remote Control Box41
Remote Mode Switching for Noise Reduction Equipment41
Parellel I/O Connector41
Noise Reduction Connector Pin Assignment41
AC Power Connection42
Controls and Indicators: Quick Reference Guide44
Section 3: Functional Checkout and Basic Operation44
General44
Transport Features45
Audio/Monitor Control Panel, Card Cage and Power Supply Features46
Power Supply Indicators47
Speed Switch47
Forward Button, Rewind Button47
Stop/Load Button47
Play Button48
Record Button48
Edit/Unload Button48
Speed Mode Switch49
Pitch Control50
Cue Button50
Cue Lever50
Tape Time Display/Tape Timer Reset Button50
Search Zero Button51
Tape Speed Display51
"Ips - %" Button51
End of Tape (Safety) Switch51
Input Level Controls52
Output Level Controls52
SRL Buttons and Indicators52
VU Meters52
Record Mode Switches (Ready/Safe) and Record Mode Indicators53
Test OSC Switch and EXT OSC Jack53
Monitor Selector Buttons54
Phones Jack54
LF COMP Switches54
Master Bias Switch54
REF FLUX Switch and REF FLUX Indicators55
Capstan Lock Indicator55
Test Switch and CPU Condition (Run) Indicator55
Functional Checkout56
Reel Installation56
Reel Clamp Installation for Small and Large Reels57
Checking Tension Compensation for Tape Width58
Powering up58
Loading Tape on the Transport59
Tape Threading Diagram59
The Tape Speed and Record/Play Equalization Selectors60
Normal Play Mode61
Reverse Play Mode61
Fast Winding Modes61
Spooling Mode62
Shuttle Cue Mode62
Fast Cue Mode62
Edit/Unload63
Speed Mode Selection63
Search to Zero64
Remote Control Box (Remote Box) Functional Checkout65
The Auto Locator65
Audio/Monitor Control Function (Including Record) Checkout65
Record Mode65
Input Mode66
Sel-Rep Mode66
Individual Channel Output Selection (Audio Monitor)66
Input and Output Level Controls67
Repro (Play) Mode67
Section 4: Audio Alignment70
General Description70
Front Panel Controls on the Audio71
Demagnetizing the Heads and Tape Guidance Path73
Cleaning the Tape Path74
Audio Circuit Board Preliminary Alignment (Occasional)74
Important Note Regarding Level Measurements76
Repro (and SEL-REP) Alignment77
Repro and Record Head Azimuth Adjustment Screws78
Record Aligmnent79
Bias Adjustment79
Removal of the Head Assembly Rear Cover80
Head Assembly Circuit Board Bias Test Points80
Record Level Adjustment82
Record Equalization Adjustment82
Phase Compensation83
Time Code Module Alignment84
Low Frequency Compensation (LF Comp)84
Head Alignment84
Azimuth Adjustment and Head Height Adjustment84
Reproduct Alignment85
Output Level Alignment85
Record Alignment85
Reproduce Level Adjustment85
Bias Adjustment85
Input Level Adjustment86
LED Threshold Adjustment86
Fine Adjustment of Delay Time87
Head Geometry90
Access to the Undeside of the Transport Deck Plate90
Section 5: Transport Alignment90
General Description90
Capstan Pinch Roller Solenoid Travel (and Pressure)91
Measuring Pinch Roller Tension92
Brake Torque93
Brake Tension Measurement Using a Spring Scale93
Spring Retaining Bracket for Brake Tension Adjustment94
Reel Turntable Height95
Tape Lifters95
Supply and Takeup Reel Tension and Speed Adjustments96
Takeup Reel Tension97
Zero Search Slow Speed Crawl98
Past Wind Speed98
Reel Control Board Internal Adjustments and Test Points99
Tachometer Phase100
Correct Tachometer Output in Play Mode100
Test Points on Reel Control PCB for Tach Phase Check101
Reverse Play Speed and Reel Motor Drive Amplifier (MDA) Gain102
Counter Tachometer Board on Underside of Transport102
Capstan Control Board (D)104
Capstan Gain104
Capstan Damping104
Capstan Control Board Check Points and Adjustments105
External Sync Input Calibration106
Cue Lever Offset and Maximum Speed106
Operation110
Recording Initial Tracks110
General110
Playback of Initial Tracks111
Rel-Rep Recording (Overdubbing)112
Sel-Rep Recording (Punch-Ins)113
Rehearsal of Overdubs on Punch-Ins114
Hand Spooling115
Dump Edit115
Spooling Mode115
Use of Variable Speed Mode117
Use of an External Speed Reference117
Using SMPTE Synchronization And/Or Location Control118
Connecting a Synchronizer to the Unit118
General118
Interface of the Otari Mtr-I0 to the Btx Shadow119
Adding a Diode to Transport Control Board for Mute/Unmute Operation122
Interface of the Unit to Audio Kinetics "Q-Lock" SMTE Synchronizers123
Interface of the Otari Mtr-I0 to Audio123
Interface of the Unit to Adams-Smith 2600 SMPTE Synchronizers124
Interface of the Otari Mtr-10 to Adams-Smith 2600124
Parallel I/O Connector Assignment127
Time Code Unit Description129
Ready/Safe Switch129
Monitor Mode Select Switch129
Specification for Time Code Version131
Auto Locator Installation133
Section 7: Auto Locator133
General133
Tape Time134
Auto Locator Controls and Indicators135
Locate Time136
Keyboard Numerals136
Shift Left and Shift Right136
Conventional Store/Recall/Search Vs. Direct Store/Search137
Conventional Memory Store137
Load137
Direct Memory Store138
Clearing (Zeroing) a Memory138
Search Zero139
Conventional Memory Recall and Search139
Direct Memory Search139
Shuttle140
Auto Rewind141
Transport Controls141
Examples of Auto Locator Operation141
Clearing a Direct Store Memory145
"Illegal" Commands145
Overbridge Conversion Kit/Standard Console Conversion Kit148
Full Track Conversion Head Assembly148
DIN Track Conversion Head Assembly148
Section 8: Field Conversions148
Parts Kit for Modification of 1/2" Model into 1/4" Model149
MODIFICATION for LOW SPEED OPERATION (3.75, 7.5, 15 Ips)149
Audio Boards150
Component Changes on Audio Boards for Low Speed Operation151
Unit with Overbridge Installed View152
Parts Kit for Center Track Conversion154
Record/Reproduct Electronics - General Information156
Repro Head and Electronics156
Section 9: Circuit Description156
Audio Output Stage157
Record Electronics158
Bias/Erase Circuitry and Timing158
Master CPU: Board "B"159
Transport Control: Board "A"160
Reel Control: Board "C"160
Capstan Control: Board "D"161
Removing and Reinserting Printed Circuit Boards165
Section 10: Maintenance165
General165
Reel Motor Replacement166
Brake Pad Replacement167
Meter or Meter Lamp Replacement167
Capstan Pinch Roller Removal and Replacement168
Takeup Roller Guide Removal and Replacement168
Takeup Roller Guide Disassembly168
Impedance Roller (Supply Reel Roller) Removal and Replacement169
Tachometer Roller Removal and Replacement169
Cleaning and Lubrication170
Reel Motor Drive Circuit Boards Removal and Replacement170
Safety Shut-Off Switch Assembly Removal and Replacement171
Swing Arm Assembly Removal and Replacement171
Capstan Motor Removal and Replacement172
Tape Transport Data174
Section 11: Specifications174
Electronics175
Physical Data176
Accessories177
Parts Lists and PCB Assemblies180
Parts Lists and Exploded View Drawings199
Electrical Diagrams250

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OTARI MTR-10II Series Specifications

General

Brand	OTARI
Model	MTR-10II Series
Category	Recording Equipment
Language	English

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