Tascam DA-30 Service Manual

TASCAM
TEAC Professional Division
SERVICE MANUAL
NOTES
As regards the resistors and capacitors, refer to the circuit diagrams
and the PCB ass’y drawings contained in this manual.
Parts marked with * require longer delivery time.
* Resistor values are in ohms (k = 1,000 ohms, M = 1,000,000
ohms).
All capacitor values are in microfarads (p = picofarads).
* AX Parts marked with this symbol are safety critical components.
They must always be replaced with identical components — refer to
the TEAC parts List and ensure exact replacement.
O dBis referenced to 1V in this manual unless otherwise specified.
PC hoards shown are viewed electro-parts side.
Parts not shown in the parts lists or parts, through listed, having no
parts numbers are not general “ready-to-supply” parts.
Effective: JUNE, 1990 940356
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Tascam DA-30 Specifications

General

Type	DAT Recorder
Tape Speed	8.15 mm/s
Weight	9.5 kg
Track System	2-channel stereo
Sampling Frequency	48kHz, 44.1kHz, 32kHz
Analog Inputs	XLR, RCA
Analog Outputs	XLR, RCA
Remote Control	Yes
Quantization	16-bit linear
Signal to Noise Ratio	92 dB
Dynamic Range	92 dB
Digital Inputs	Coaxial, Optical
Digital Outputs	Coaxial, Optical
Power Supply	120V AC, 60Hz

Summary

2. REMOVAL OF COMPONENTS

2-1. Flowchart

Outlines the component removal sequence, referring to subsequent pages for detailed steps.

2-2. Removal of External Components

Details the procedure for removing external components of the unit.

2-3. Removal of Mechanical Parts

Explains the procedure for disassembling mechanical components of the device.

3. Mechanism Adjustment

3-1. Back Tension Torque Adjustment

Explains how to adjust back tension torque for proper tape mechanism operation.

3-2. Tape Travel Adjustment

Covers adjustments to ensure smooth and correct tape path movement.

4. Electrical Adjustments

4-1. Adjustment of the Servo System

Details the procedure for adjusting the servo system of the tape deck.

4-2. Adjustment of the audio system

Covers calibration and adjustment procedures for the audio circuitry.

13. Adjustment of Error Rate

13-1. Digital PCB section

Focuses on adjusting the error rate for the digital PCB section using an oscilloscope.

13-2. Adjustment of the EQ at the RF unit

Adjusts the RF unit's equalizer (EQ) to minimize error flags.

5. EXPLODED VIEWS AND PARTS LISTS

EXPLODED VIEW-I

Lists parts and their reference numbers for Exploded View-I.

EXPLODED VIEW-2

Details components and part numbers for Exploded View-2.

EXPLODED VIEW-3

Provides a list of parts corresponding to Exploded View-3 diagrams.

6. PC BOARDS AND PARTS LISTS

DIGITAL PCB ASSY

Displays the component layout and parts list for the Digital PCB.

AUDIO PCB ASSY

Shows the component layout and parts list for the Audio PCB.

FRONT PCB ASSY

Displays the component layout and parts list for the Front PCB.

Mechanism Section PCB Schematic Diagram

Audio PCB Schematic Diagram

Detailed schematic diagram for the Audio PCB.

Digital PCB Schematic Diagram

Detailed schematic diagram for the Digital PCB.

Power Supply PCB Schematic Diagram

Detailed schematic diagram for the Power Supply PCB.