Aiwa Z-HT730 User Manual

SERVICE MANUAL
DATA
COMPACT DISC STEREO
CASSETTE RECEIVER
BASIC TAPE MECHANISM : 2ZM-3MK2 PR5NM
BASIC CD MECHANISM : 6ZG-1 ZRDM
Z-HT730 K, EZ
S/M Code No. 09-006-433-9R1
REVISION
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
Z-HT730, (S/M Code No. 09-003-422-7T3).
• If requiring information about the CD mechanism, see Service Manual of
6ZG-1, (S/M Code No. 09-001-338-7N2).
Z–HT730
SPEAKERSYSTEM
CD
CASSEIVER
SX–ZHT730
SX–CR677
CX–ZHT730
REMOTE
CONTROLLER
RC–ZAS05
All manuals and user guides at all-guides.com
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Aiwa Z-HT730 Specifications

General

Brand	Aiwa
Model	Z-HT730
Category	Stereo Receiver
Language	English

Summary

Specifications

FM Tuner Section Specifications

Details for FM reception tuning range, sensitivity, and antenna.

MW Tuner Section Specifications

Details for MW reception tuning range, sensitivity, and antenna.

LW Tuner Section Specifications

Details for LW reception tuning range, sensitivity, and antenna.

Amplifier Section Specifications

Power output, distortion, and input/output details.

Cassette Deck Section Specifications

Track format, frequency response, noise ratio, heads.

Compact Disc Player Section Specifications

Laser, D-A converter, noise, distortion, wow/flutter.

General Specifications

Power requirements, consumption, dimensions, weight.

Speaker System SX-ZHT730 Specifications

Cabinet type, speakers, impedance, SPL, dimensions, weight.

Laser Beam Safety Precautions

Servicing Warning for Laser Beam Exposure

Cautionary advice regarding eye proximity to laser exit during servicing.

Precaution for Optical Block Replacement

Steps to prevent damage to laser diode during replacement.

Pre-Repair Procedures and Checks

Discharging Power Supply Capacitors

Procedure to safely discharge electrolytic capacitors before repair.

Microcomputer Pre-Exchange Checks

Verification steps before replacing the microcomputer.

Microcomputer Troubleshooting and Checks

Forced Reset Procedure for Microcomputer

Method to perform a forced reset on the microcomputer.

Microcomputer Soldering State Confirmation

Checking solder joints of the microcomputer for faults.

Adjustment Procedures

Main PCB Adjustment Points

Locations on the main PCB for tuning and deck adjustments.

MICON PCB Adjustment Points

Adjustment points on the MICON PCB for tuning.

Deck PCB Adjustment Points

Adjustment points on the Deck PCB for tape head alignment.

Tuner Section Adjustments

Clock Frequency Check

Verify clock signal frequency for tuner operation.

MW VT Check

Check Voltage Tuning circuit performance for MW reception.

MW Tracking Adjustment

Adjust MW tracking for optimal signal reception.

LW VT Check

Check Voltage Tuning circuit performance for LW reception.

LW Tracking Adjustment

Adjust LW tracking for optimal signal reception.

AM IF Adjustment

Adjust the Intermediate Frequency circuit for AM reception.

FM VT Check

Check Voltage Tuning circuit performance for FM reception.

FM Tracking Check

Verify FM tracking for optimal signal reception.

DC Balance / Mono Distortion Adjustment

Adjust DC balance and mono distortion for audio quality.

Output Level Check

Verify audio output levels for MW and FM modes.

FM Separation Check

Ensure proper stereo separation in FM reception.

Deck Section Adjustments

Tape Speed Adjustment (Deck 2)

Calibrate tape speed for accurate playback.

Head Azimuth Adjustment

Align tape heads for optimal sound fidelity.

PB Frequency Response Check

Verify playback frequency response accuracy.

PB Sensitivity Check

Check playback sensitivity for tape signals.

REC/PB Frequency Response Adjustment

Adjust recording and playback frequency response.

REC/PB Sensitivity Check

Verify recording and playback sensitivity.

Micon Section Adjustments

µ-CON OSC Adjustment

Adjust the oscillator for the microcomputer control system.

Speaker Unit Disassembly and Reassembly

Speaker Disassembly Types

Instructions for disassembling speaker units (Type 1, 2, 3).

Tools for Speaker Disassembly

List of tools required for speaker disassembly.

Removing the Speaker Panel (FR)

Step-by-step guide to remove the front panel.

Attaching the Speaker Panel (FR)

Instructions for reattaching the front panel.