Aiwa HD-S1 Service Manual

AIWA
SERVICE
MANUAL
'@ BASIC DAT MECHANISM: D-3
S//M Code No.90~ 110 DATE OF ISSUE 11,/1990 — |
HD-S1
DIGITAL AUDIO TAPE RECORDER
_@ TYPE. INOW VANG SW 4 =
SPECIFICATIONS
I Tape Specifications
Tape
Head
Tape speed
Digital audio tape
Rotating head
8.15 mm/sec
Sampling frequencies
Digitization
Recording: 48 kHz,
44.1 kHz, 32 kHz
Playback: 48 kHz,
44.1 kHz, 32 kHz
16-bit linear
Number of channels
2 (stereo)
I Audio (attaching the A/D converter)
Frequency
response
S/N
Dynamic range
20 Hz — 22,000 Hz
85 dB (or better)
85 dB (or better)
Total harmonic distortion
Wow & flutter
0.01% [or less
(1 kHz)]
Measurable limit
(+ 0.001% W PEAK) or less
EE Input/Output Terminals
[On the DAT]
PHONES
DIGITAL I/O (in/out)
Stereo mini jack (max.
15 mW + 15 mW, EIAd/
32 Q)
Stereo mini jack (0.5 Vp-p,
input/output impedance
75 Q)
[On the A/D converter]
ANALOG IN
ANALOG OUT
AIWA Co.,Ltd.
Stereo mini jack
LINE: 200 mV, input
impedance 47 kQ
MIC: 1 mV (ATT 0 GB),
10 mV (ATT 20 dB), input
impedance 10kQ
Stereo mini jack
Maximum output level 1.2 V
(RMS, 48 kHz), output
impedance 47 ki:
WH Power supply/Miscellaneous
Power supply Rechargeable lead battery
DC 6 V (PB-20)
Local AC power (using the
supplied AC adaptor, DC
7.4V)
Supplied rechargeable lead
battery PB-20 (when not
using the A/D converter)
Approx. 55 minutes (EIAJ,
playback/2 hours
recharging)
Approx. 55 minutes (ElAJ,
digital recording/2 hours
recharging)
Maximum External Dimensions
DAT:
95.0 (W) x 38.1 (H) x 146.4
(D) mm
A/D converter:
94 (W) x 37.6 (H) x 50.1
(D) mm
Weight DAT:
Approx. 610 g (with
rechargeable lead battery)
A/D converter:
Approx. 100 g (without
rechargeable lead battery)
Battery life
BM Ac Adaptor
Rated voltage AC-740U, H:
AC 120 V-240 V
18 VA, 50/60 Hz
DC 7.4V, 1000 mA
AIWA rechargeable lead
battery (PB-20) .
Rated input
Rated output
Usable Batteries
© Design and specifications are subject to change without
notice.
Tokyo Japan
Printed in Japan

Aiwa HD-S1 Specifications

General

Sampling Frequency	44.1kHz
Microphone	Built-in stereo microphone
Recording Format	MP3
Headphone Jack	3.5 mm
Storage	Internal memory
USB	USB 2.0

Summary

Tape Specifications

Audio Specifications

Input/Output Terminals

Power Supply and Miscellaneous

AC Adaptor Specifications

Service Jig and Tools

Jig Assembly Instructions

Instructions for assembling test jigs for diagnostic purposes.

Jig Usage Instructions

Guidelines for operating the assembled test jigs during servicing.

Disassembly Instructions - 1

Panel and Lid Removal

Steps for removing the top/bottom panels and cassette lid.

MD ASSY Removal

Procedure for safely removing the MD ASSY component.

Main Circuit Board Removal

Detailed steps for disconnecting and removing the main circuit board.

Mechanism ASSY Removal

Instructions for carefully removing the main mechanism assembly.

Disassembly Instructions - 2 (Mechanism Section)

Drum and Sled Motor ASSY Removal

Steps to remove the drum and sled motor assemblies.

Pinch Roller ASSY Removal

Steps to remove the pinch roller assembly.

Capstan Motor Removal

Steps to remove the capstan motor.

Chassis, Mold, and Gear, Sled Removal

Steps to remove chassis, mold, and sled gears.

Electrical Main Parts List

Block Diagram - 1 (IC Composition)

Block Diagram - 2 (REC/PB Audio)

REC Audio Block

Block diagram for the record audio signal path.

PB Audio Block

Block diagram for the playback audio signal path.

Block Diagram - 3 (System Control)

Block Diagram - 4 (Drum Servo)

Block Diagram - 5 (Capstan Servo)

Block Diagram - 6 (ATF Servo)

Block Diagram - 7 (HDA - 1 Audio)

Wiring - 1

F Connect C.B Wiring

Wiring diagram for the F Connect Circuit Board.

Sub I C.B Wiring

Wiring diagram for the Sub I Circuit Board.

Schematic Diagram - 2 (Mecha/Front)

E Mecha C.B Schematic

Schematic for the Flexible Mecha Circuit Board.

C Front C.B Schematic

Schematic for the Front Circuit Board.

D Sub1 C.B Schematic

Schematic for the Sub1 Circuit Board.

Wiring - 1 (Part 2)

A Main C.B Wiring Connections

Wiring connections for the A Main Circuit Board.

B Sub C.B Wiring

Wiring diagram for the B Sub Circuit Board.

Wiring - 2

A Main C.B Wiring Details

Detailed wiring diagram for the A Main Circuit Board.

Connector Wiring to HD-S1

Wiring connections from A Main C.B to HD-S1 via J4.

Schematic Diagram - 3, Wave Form - 2 (System Control)

A Main C.B Schematic

Schematic for the A Main Circuit Board.

B Sub C.B Schematic

Schematic for the B Sub Circuit Board.

Schematic Diagram - 4, Wave Form - 3 (Pre Amp)

Pre Amp C.B Schematics

Schematics and waveforms for the Pre Amp Circuit Board.

Wiring - 3

Front C.B Wiring

Wiring diagram for the Front Circuit Board.

Pre Amp C.B Wiring

Wiring diagram for the Pre Amp Circuit Board.

Mecha C.B Flexible PCB Wiring

Wiring diagram for the Flexible Mecha Circuit Board.

IC Description

IC HD49211BFS Pin Descriptions

Detailed pinout and function for IC HD49211BFS.

IC HD49212 Pin Descriptions

IC Descriptions

IC PD75108GF-J96 Pin Details

Pinout and function details for IC PD75108GF-J96.

IC HA12062AMP Pin Details

Pinout and function details for IC HA12062AMP.

Adjustment

VCO Adjustment

Procedure for adjusting the Voltage Controlled Oscillator.

ATF Adjustment

Procedure for adjusting the Automatic Tape Following system.

TACH Adjustment

Procedure for adjusting the TACH signal.

Error Rate Adjustment

Procedure for adjusting error rate parameters.

Mechanism Section

Cleaning

Instructions for cleaning mechanism parts.

Back-tension Adjustment

Procedure for adjusting tape back-tension.

Tape Path Adjustment

Initial Waveform Adjustment and Setup

Connect oscilloscope and adjust for square waveform.

Free Waveform and Tape Transport Adjustments

Adjust free waveforms and tape path for proper transport.

Final Checks and Tape Path Verification

Verify RF waveform rise and tape path during playback.

Test Mode

Starting Test Mode

Procedure for entering test modes.

Types of Test Mode

Overview of available test modes and switching methods.

Test Mode Descriptions and Applications

Details on Test Modes 0 through 4 and their uses.

Exploded View - 1

Exploded View - 2

Exploded View - 3

Exploded View - 4

Spring Application Position

Spring Placement Diagrams

Visual guide showing where to apply various springs.

HDA - 1 (A/D Converter)

Electrical Main Parts List (HDA-1)

List of main electrical components for the HDA-1 unit.

Sub Circuit Board Section

Components and connections for the HDA-1 sub circuit board.

Level Diagram (HDA - 1)

IC Block Diagram (HDA - 1)

MN86081 IC Block Diagram

Block diagram for the MN86081 integrated circuit.

Schematic Diagram, Wave Form (HDA - 1)

A Main C.B Schematic and Waveforms

Schematic and waveforms for the A Main Circuit Board of HDA-1.

B Sub C.B Schematic and Waveforms

Schematic and waveforms for the B Sub Circuit Board of HDA-1.

Wiring (HDA - 1)

B Sub C.B Wiring Diagram

Wiring diagram for the B Sub Circuit Board of HDA-1.

Wiring (HDA - 1) (Part 2)

A Main C.B Wiring Diagram

Wiring diagram for the A Main Circuit Board of HDA-1.

Exploded View (HDA - 1)

Accessories/Package List