Tascam AQ 65 Auto Locater Service Manual

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TAS CAM

TEAC Professional Division

AQ-65

Auto Locator

C OPERATION/MAINTENANCE )

5700070002

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Introduction

The TASCAM AO-65 is a multifunction Auto
Locator/Tape Transport Controller for use with
the TASCAM MS-16, and most Series 40 and
50 recorder/reproducers. To confirm com-
patibility see p. 8.

Its broad range of features include 10 point
memory, programmable duration pre~roll, two
point repeat, and duplication of transport
control functions. These combine to fulfill
the complex requirements of todays professional
producer.

Your ACE-65 can be used to:

*Return to Zero (RTZ) from any point on

the tape. Zero can be used to mark the
beginning of tape or as the start of a pro-
gram segment.

*Locate any of 10 stored memory locations.
These may be programmed from a "cue
sheet by use of the NUMERIC KEYPAD,
while the tape is stopped or rolling. Or, by
using the DIRECT STORE button while
the tape is rolling.

*Repeat playback of a selected portion of
a tape.

*Preset an amount of play time before the
CUE point by using the PRE-RO LL button.

TABLE OF CONTENTS

Connections ........................ p. 3 Machine Compatibility ................ p. 8

How to Use the AO-65 Note for U.K. Customers .............. p. 9
Loading Memory .................. p. 4 Voltage Selection .................... p. 9
Direct Storage .................... p. 4
Return to Zero (RTZ) .............. p. 4 Circuit Descriptions
Recall Memory .................... p. 4 1. Block Diagram .................. p. 10
Clear a Memory ................... p. 4 2. Power Supply Circuit ............. p. 11
Search .......................... p. 4 3. CPU (8039) Circuit .............. p. 12
Factor Selector Calibration .......... p. 4 4. Data Bus Drive Control Circuit ...... p. 14
Pre~roll .......................... p. 4 5. Memory Circuit (EPROM) ......... p.14
Repeat (Looping) .................. p. 5 6. I/O Expansion Circuit ............ p. 15
Shift to Right ..................... p. 5 7. Interface Output Circuit ........... p. 15
Shift to Left ...................... p. 5 8. Interface Input Circuit ............ p. 16
Clear All Memory .................. p. 5 9. Timer Circuit ............. -- D- 16

Features and Controls 10. Memory Register LED Drive Cicuit . . p. 18
1. Tape Time Display and Related 11. LED Drive Circuit 9. 18

Functions ...................... p. 6 12. Lamp Drive Circuit ......... p. 19
2. Locate Time and Memory Register 13. Keyboard- Display Interface Circuit . . p. 20
Displays and Related Functions ..... p. 6 Parts Lists and Schematics ............ p. 22

3. Transport Controls ............... p. 6 Interconnect Diagram and IC Internal
4. Numeric keypad ................. p. 7 Block Diagrams .................... Insert
5. Rear Panel ..................... p. 7

Copyright 1985, TEAC Corporation. All rights reserved.

WARNING:

TO PREVENT FIRE OR SHOCK
HAZARD, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVICING TO EIUALIFIED
SERVICE PERSONNEL.

CAUTION

lush. m iiirrmc who.
nu rm! (Wm

MOISTURE The lightning flash with arrowhead symbol within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
dangerous voltage within the products enclosure, that may be of
This apparatus hasa serial number located ; sufficient magnitude to constitute a risk of electric shock to persons.

on the rear panel. Please record the
model number and serail number and
retain them for your records.
Model number_-E
E Serial number

The exclamation point within an equilateral triangle is intended to
alert the user of the presence of important operating and mainte-
nance (servicing) instructions in the literature accompanying the
appliance.

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