Sony Net MD Walkman MZ-N1 User Manual

SERVICE MANUAL
PORTABLE MINIDISC RECORDER
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
Tourist Model
SPECIFICATIONS
MZ-N1
US and foreign patents licensed from Dolby
Laboratories.
– Continued on next page –
Model Name Using Similar Mechanism NEW
Mechanism Type MT-MZN1-171
Optical Pick-up Name LCX-5R
Ver 1.4 2002. 10
9-873-443-05 Sony Corporation
2002J0500-1 Personal Audio Company
C 2002.10 Published by Sony Engineering Corporation
• OpenMG, “MagicGate”, “MagicGate Memory Stick”, “Memory Stick”,
VAIO,MusicClip and their logos are trademarks of Sony Corporation.
• “WALKMAN” is a trademark of Sony Corporation.
• Microsoft,Windows,Windows NT and Windows Media are trademarks
or registered trademarks of Microsoft Corporation in the United States
and/or other countries.
• IBM and PC/AT are registered trademarks of International Business
Machines Corporation.
• Macintosh is a trademark of Apple Computer,Inc.in the United States
and/or other countries.
• All other trademarks are trademarks of their respective owners. ™ and
® marks are omitted in this manual.
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 790 nm
Emis
sion duration: continuous
Laser output : less than 44.6 µW
(This output is the value measured at a distance
of 200 mm from the lens surface on the optical
pick-up block with 7 mm aperture.)
Recording and playback time (when
using MDW-80)
Maximum 160 min. in monaural
Maximum 320 min. in stereo
Revolutions
382 rpm to 2,700 rpm (CLV)
Error correction
ACIRC (Advanced Cross Interleave Reed
Solomon Code)
Sampling frequency
44.1 kHz
Sampling rate converter
Input: 32 kHz/44.1 kHz/48 kHz
Coding
ATRAC (Adaptive TRansform Acoustic
Coding)
AT R AC 3 — LP2/LP4

Sony Net MD Walkman MZ-N1 Specifications

General

Brand	Sony
Model	Net MD Walkman MZ-N1
Category	CD Player
Language	English

Summary

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

NOTES ON LASER DIODE EMISSION CHECK

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-5R)

OPTICAL PICK-UP FLEXIBLE BOARD

DISASSEMBLY

DISASSEMBLY FLOW

Step-by-step outline of the disassembly procedure for the device.

BOTTOM PANEL ASSY

UPPER PANEL SECTION

LCD MODULE, UPPER PANEL ASSY

MAIN BOARD SECTION

BATTERY CASE ASSY, MAIN BOARD

MD MECHANISM DECK (MT-MZN1-171), CHASSIS ASSY

OP SERVICE ASSY (LCX-5R)

HOLDER ASSY

DC MOTOR (SLED) (M602)

DC SSM18B MOTOR (SPINDLE) (M601), DC MOTOR (OVER WRITE HEAD UP/DOWN) (M603)

TEST MODE

Outline

Operation in Setting the Test Mode

How to activate and operate the device in test mode.

Setting Method of Test Mode

Different methods to set the device into test mode.

Releasing the Test Mode

Configuration of Test Mode

Details on how to configure and navigate within the test mode.

Manual Mode

Transition method in manual mode

Self-Diagnosis Result Display Mode

How to use the self-diagnosis function to analyze errors.

Self-diagnosis result display mode setting method

Steps to set up and view self-diagnosis results.

Overall Adjustment Mode

Mode for automatic servo adjustment of CD and MO discs.

Description of error indication codes

Table listing error codes and their meanings for troubleshooting.

Description of indication history

Reset the Error Display Code

Procedure to reset error display codes after servicing.

Sound Skip Check Result Display Mode

Mode to check for errors that occurred during recording or playback.

Jog and Key Check Mode

Mode to check the normal functioning of the set and remote commander.

ELECTRICAL ADJUSTMENTS

Outline

Precautions for Adjustment

Important precautions to follow before and during adjustments.

Adjustment Sequence

The order in which adjustments should be performed.

NV Reset

Procedure and caution for resetting non-volatile memory.

Change of NV adjusted values (version 1.000)

Adjusting specific NV values for microcomputer version 1.000.

Change of NV adjusted values (version 1.100)

Adjusting specific NV values for microcomputer version 1.100.

NV adjusted values modifying procedure

Detailed steps for modifying NV adjusted values for various items (version 1.100).

Power Supply Manual Adjustment

Sequence and method for manual power supply adjustments.

Temperature Correction

Method for performing temperature correction adjustments.

Laser Power Check

Procedure for checking laser power output.

Overall Adjustment Mode

Configuration of overall adjustment mode

Diagram and explanation of the overall adjustment mode configuration.

Electrical offset adjusting method

Method for performing electrical offset adjustment.

Adjustment method of CD and MO overall adjustment mode

Steps to perform CD and MO overall adjustments.

CD and MO overall adjustment items

Lists of items for CD and MO overall adjustment.

Resume Clear

Procedure to clear resume settings after adjustments.

Rewriting the Patch Data at Replacement of Main Board or Nonvolatile Memory (IC802)

Preparation

Rewriting the patch data

Step-by-step procedure for rewriting patch data.

DIAGRAMS

6-1. BLOCK DIAGRAM – SERVO/USB Section

Block diagram illustrating the servo and USB sections of the unit.

6-2. BLOCK DIAGRAM - AUDIO Section

Block diagram illustrating the audio section of the unit.

6-3. BLOCK DIAGRAM - DISPLAY/KEY CONTROL/POWER SUPPLY Section

Block diagram of display, key control, and power supply.

6-5. PRINTED WIRING BOARD - MAIN Board (Component Side)

6-6. PRINTED WIRING BOARD - MAIN Board (Conductor Side)

6-7. SCHEMATIC DIAGRAM - MAIN Board (1/4)

6-8. SCHEMATIC DIAGRAM - MAIN Board (2/4)

6-9. SCHEMATIC DIAGRAM - MAIN Board (3/4)

6-10. SCHEMATIC DIAGRAM - MAIN Board (4/4)

Waveforms

IC Block Diagrams

6-11. IC PIN FUNCTION DESCRIPTION