Sony Hi-MD Walkman MZ-RH10 User manual

SERVICE MANUAL
PORTABLE MD RECORDER
MZ-RH10
Ver. 1.0 2005.03
9-879-560-01
2005C05-1
© 2005.03
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
Model Name Using Similar Mechanism NEW
MD Mechanism Type MT-MZNH900-181J
Optical Pick-up Name ABX-UJ
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Tourist Model
SPECIFICATIONS
– Continued on next page –
US and foreign patents licensed from Dolby Laboratories.
•SonicStage is trademark or registered trademark of Sony Corporation.
•MD Simple Burner, OpenMG, “MagicGate”, “MagicGate Memory
Stick”, “Memory Stick”, Hi-MD, Net MD,ATRAC,ATRAC3,
ATRAC3plus and their logos are trademarks 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.
•Pentium is a trademark or registered trademark of Intel Corporation.
•All other trademarks and registered trademarks are trademarks or
registered trademarks of their respective holders.
•™and ® marks are omitted in this manual.
•CD and music-related data from Gracenote, Inc., copyright © 2000-
2004 Gracenote. Gracenote CDDB®Client Software, copyright 2000-
2004 Gracenote. This product and service may practice one or more of
the following U.S. Patents: #5,987,525; #6,061,680; #6,154,773,
#6,161,132, #6,230,192, #6,230,207, #6,240,459, #6,330,593, and other
patents issued or pending. Services supplied and/or device manufactured
under license for following Open Globe, Inc. United States Patent
6,304,523.
Gracenote is a registered trademarks of Gracenote. The Gracenote logo
and logotype, and the “Powered by Gracenote” logo are trademarks of
Gracenote.
Program © 2001, 2002, 2003, 2004, 2005 Sony Corporation
Documentation © 2005 Sony Corporation
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 790 nm
Emission 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.)
For other Service and User Manuals, go to www.ManualDepot.com

MZ-RH10
2
Revolutions
350 rpm to 3,000 rpm (CLV)
Error correction
Hi-MD:
LDC (Long Distance Code)/BIS (Burst
Indicator Subcode)
MD:
ACIRC (Advanced Cross Interleave Reed
Solomon Code)
Sampling frequency
44.1 kHz
Sampling rate converter
Optical (digital) input: 32 kHz/44.1 kHz/
48 kHz
Audio formats supported by this
recorder
Recording:
Linear PCM (44.1 kHz/16 bit)
ATRAC3plus (Adaptive TRansform
Acoustic Coding 3 plus) (Hi-SP/Hi-LP)
Playback:
Linear PCM
ATRAC3plus
ATRAC3
ATRAC
MP3 (MPEG-1 Audio Layer-3/Sampling
frequency 44.1 kHz/Bit rate 32 - 320 kbps
(constant/variable bit rate))
Modulation system
Hi-MD:
1-7RLL (Run Length Limited)/PRML
(Partial Response Maximum Likelihood)
MD:
EFM (Eight to Fourteen Modulation)
Frequency response
20 to 20,000 Hz ±3 dB
Outputs
i: stereo mini-jack (dedicated remote control
jack)
Maximum output (DC)
Headphones:
2.8 mW + 2.8 mW (16 Ω) (European
models)
5 mW + 5 mW (16 Ω) (Other models)
Power requirements
Sony AC Power Adaptor connected at the DC
IN 3V jack:
120 V AC, 60 Hz (Models for USA, Canada,
Mexico and Taiwan)
240 V AC, 50 Hz (Model for Australia)
220 V AC, 50 Hz (Models for China and
Argentine)
100 - 240 V AC, 50/60 Hz (Other models)
The recorder:
Nickel metal hydride rechargeable battery
NH-14WM 1.2V 1,350 mAh (MIN) Ni-MH
LR6 (size AA) alkaline battery
AC power adaptor DC 3V
Operating temperature
+5°C (+41°F) to +35°C (+95°F)
Battery operation time2)
Measured in accordance with JEITA.
2)
When playing continuously in Hi-MD mode
(Unit: approx.hours)(JEITA)
When playing continuously in MD mode
(Unit: approx.hours)(JEITA)
Battery life
1)
When recording continuously in Hi-MD mode (Unit: approx.hours)(JEITA
2)
)
Disc type Batteries Linear PCM Hi-SP Hi-LP
1GB Hi-MD disc
NH-14WM
3) 5.5 7.5 8.5
LR64) 233
NH-14WM + LR68 11.5 12.5
60/74/80-minute
standard disc NH-14WM 5 7.5 8.5
LR6 4 6 6.5
NH-14WM + LR69.5 14.5 16.5
1) Measured with “EL Light” is set to “Auto Off” (page 58).
2) Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries
Association) standard.
3) When using a 100% fully charged nickel metal hydride rechargeable battery
4) When using a Sony LR6 (size AA) alkaline dry battery (produced in Japan)
Disc type Batteries Linear
PCM
Hi-SP Hi-LP MP31)
1) Tracks transferred at 128 kbps
1GB Hi-MD
disc NH-14WM 9 12.5 14.5 13
LR6 9.5 13.5 15.5 14.5
NH-14WM + LR6 20 28.5 33 30
60/74/80-minute
standard disc NH-14WM 7.5 12 15 13.5
LR6 8 13 16 14.5
NH-14WM + LR6 17 27.5 34 30.5
Disc type Batteries SP LP2 LP4
60/74/80-minute
standard disc NH-14WM 13.5 15 15.5
LR6 16 17.518.5
NH-14WM + LR6 32 35.5 37
Dimensions
Approx. 80.2 ×18.9 ×84.1 mm (w/h/d)
(31/4×3/4×33/8in.) (excluding projecting parts
and controls)
Mass
Approx. 120 g (4.2 oz) (the recorder only)
Approx. 147 g (5.2 oz) (including the
rechargeable battery)
Supplied accessories
Optical cable (except US and Canadian models)
Clamp filters (small-size)
CD-ROM (SonicStage/MD Simple Burner)
Carrying pouch
*Donotplay a CD-ROM on an audio CD player.
AC power adaptor
Dedicated USB cable
NH-14WM Nickel metal hydride rechargeable battery
Remote control
Earphones
Battery carrying case
Dry battery case
Design and specifications are subject to change
without notice.
List of the recording time for each disc
When using a disc in Hi-MD mode
When recording on the
recorder Recording time1)
1) Approximate time
Recording
mode on the
recorder
Codec/
Bit rate 1GB Hi-MD disc 80-minute standard
disc
74-minute
standard
disc
60-minute
standard
disc
PCM Linear PCM/
1.4Mbps 1 hour and 34 minutes 28 minutes 26 minutes 21 minutes
Hi-SP ATRAC3plus/
256kbps 7 hours and 55 minutes 2 hours and 20 minutes 2 hours and 10 minutes 1 hour and 40 minutes
Hi-LP ATRAC3plus/
64kbps 34 hours 10 hours and 10 minutes 9 hours and 20 minutes 7 hours and 40 minutes
When transferring from the
computer Recording time1)2)
2) When transferring 4-minute tracks
Codec/Bit rate 1GB Hi-MD
disc 80-minute standard
disc
74-minute
standard
disc
60-minute
standard
disc
Linear PCM/1.4Mbps 1 hour and 34
minutes 28 minutes 26 minutes 21 minutes
ATRAC3plus/256kbps 7 hours and 55
minutes 2 hours and 20 minutes 2 hours and 10 minutes 1 hour and 40 minutes
ATRAC3plus/64kbps 34 hours 10 hours and
10 minutes 9 hours and 20 minutes 7 hours and 40 minutes
ATRAC3plus/ 48 kbps 45 hours 13 hours and
30 minutes 12 hours and 30 minutes 10 hours
ATRAC3/132kbps 16 hours and
30 minutes 4 hours and 50 minutes 4 hours and 30 minutes 3 hours and 40 minutes
ATRAC3/105kbps 20 hours and
40 minutes 6 hours and 10 minutes 5 hours and 40 minutes 4 hours and 40 minutes
ATRAC3/66kbps 32 hours and
40 minutes 9 hours and 50 minutes 9 hours 7 hours and 20 minutes
MP3/128kbps 17 hours 5 hours 4 hours and
30 minutes 3 hours and 30 minutes
When using a disc in MD mode
You cannot record in MD mode on this recorder.
When transferring from the
computer Recording time1)2)
1)
Approximate time
2)
When transferring 4-minute tracks
Codec/Bit rate 80-minute
standard disc 74-minute standard disc 60-minute standard disc
ATRAC(stereo)/292kbps 80 minutes 74 minutes 60 minutes
ATRAC3/132, 105kbps 2 hours and 40
minutes 2 hours and 28 minutes 2 hours
ATRAC3/66kbps 5 hours and 20
minutes 4 hours and 56 minutes 4 hours
Recording and playback time
Inputs
1)
MIC: stereo mini-jack
(minimum input level 0.13 mV)
Line in:
stereo mini-jack for analog input
(minimum input level 49 mV)
optical (digital) mini-jack for optical
(digital) input
1)
The LINE IN (OPT) jack is used to connect
either a digital (optical) cable or a line
(analog) cable.

MZ-RH10
3
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 4
2. GENERAL ................................................................... 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 6
3-2. Case (Lower) Block......................................................... 6
3-3. Main Board...................................................................... 7
3-4. Panel (Upper) Section ..................................................... 7
3-5. Mechanism Deck (MT-MZNH900-181J)........................ 8
3-6. Battery Case Block .......................................................... 8
3-7. Gear (BSA), Gear (SB) ................................................... 9
3-8. OP Service Assy .............................................................. 9
3-9. DC Motor SSM18D/C-NP (Spindle) (M701),
DC Motor (Sled) (M702),
DC Motor Unit (Over Write Head Up/Down) (M703) ... 10
3-10. Holder Assy ..................................................................... 10
3-11. Position of Ferrite Core .................................................. 11
4. TEST MODE.............................................................. 12
5. ELECTRICAL ADJUSTMENTS .......................... 16
6. DIAGRAMS
6-1. Block Diagram – MD SERVO Section – ...................... 21
6-2. Block Diagram – AUDIO Section – .............................. 22
6-3. Block Diagram – POWER SUPPLY Section – ............. 23
6-4. Schematic Diagram – MAIN Board (1/9) – ................... 25
6-5. Schematic Diagram – MAIN Board (2/9) – ................... 26
6-6. Schematic Diagram – MAIN Board (3/9) – ................... 27
6-7. Schematic Diagram – MAIN Board (4/9) – ................... 28
6-8. Schematic Diagram – MAIN Board (5/9) – ................... 29
6-9. Schematic Diagram – MAIN Board (6/9) – ................... 30
6-10. Schematic Diagram – MAIN Board (7/9) – ................... 31
6-11. Schematic Diagram – MAIN Board (8/9) – ................... 32
6-12. Schematic Diagram – MAIN Board (9/9) – ................... 33
6-13. Printed Wiring Board
– MAIN Board (Component Side) – ............................... 34
6-14. Printed Wiring Board
– MAIN Board (Conductor Side) – ................................. 35
7. EXPLODED VIEWS
7-1. Case (Lower) Section ...................................................... 48
7-2. Panel (Upper) Section ..................................................... 49
7-3. Chassis Section................................................................ 50
7-4. Mechanism Deck Section (MT-MZNH900-181J)........... 51
8. ELECTRICAL PARTS LIST................................ 52
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 ˚C
during repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
otherthan thosespecifiedhereinmay resultin hazardousradiation
exposure.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
•For use in your house: Use the AC power
adaptor supplied with this recorder. Do not
use any other AC power adaptor since it may
cause the recorder to malfunction.
Polarity of the plug
On power sources
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.

4
MZ-RH10 SECTION 1
SERVICING NOTES
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
OPERATION CHECK WHEN THE MAIN BOARD IS
REMOVED
In making an operation check with the MAIN board removed from
the set, short the SL894 of the MAIN board with the solder before
starting the operation check.
Note: Be sure to remove the solder used for shortcircuit after the repaire
completed.
– MAIN BOARD (Conductor Side) –
SL894
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
•Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
•Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
•Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
Providing the required system environment
The following system environment is required in order to use the SonicStage Ver. 3.0/MD
Simple Burner Ver. 2.0 software for the MD Walkman.
This software is not supported by the following environments:
•OSs other than the indicated above
•Personally constructed PCs or operating systems
•An environment that is an upgrade of the original manufacturer-installed operating system
•Multi-boot environment
•Multi-monitor environment
•Macintosh
•We do not ensure trouble-free operation on all computers that satisfy the system requirements.
•The NTFS format of Windows XP/Windows 2000 Professional can be used only with the standard
(factory) settings.
•For Windows 2000 Professional users, install Service Pack 3 or later version before using the
software.
•We do not ensure trouble-free operation of the system suspend, sleep, or hibernation function on all
computers.
System requirements
Computer IBM PC/AT or Compatible
•CPU: Pentium III 450 MHz or higher
•Hard disk drive space: 200 MB or more (1.5 GB or more is
recommended) (The amount space will vary according to Windows
version and the number of music files stored on the hard disk.)
•RAM: 128 MB or more
Others
•CD drive (capable of digital playback by WDM) (A CD-R/RW drive
is necessary for CD writing)
•Sound Board
•USB port
Operating
System Factory installed: Windows XP Media Center Edition 2005/Windows XP Media Center
Edition 2004/Windows XP Media Center Edition/Windows XP
Professional/Windows XP Home Edition/Windows 2000 Professional/
Windows Millennium Edition/Windows 98 Second Edition
Display High Color (16bit) or higher, 800 u600 dots or better (1024 u768 dots
or better is recommended)
Others • Internet access: for Web registration, EMD services and CDDB
•Windows Media Player (version 7.0 or higher) installed for playing
WMA files
Notes
NOTES ON REPLACEMENT OF CSP (CHIP SIZE
PACKAGE) IC
Replacement of MM1690NCBE (IC401), SN761059AZQLR
(IC501), SC901585VAR2 (IC601) and CXD2681-225GG (IC801)
used in this set requires a special tool.

5
MZ-RH10
SECTION 2
GENERAL This section is extracted from
instruction manual.
Looking at controls
The recorder
AMIC (PLUG IN POWER) jack
1)
BLINE IN (OPT) jack
CHOLD switch
Slide the switch in the direction of the
arrow to disable the buttons on the
recorder. To prevent the buttons from
being accidentally operated when you
carry the recorder, use this function.
DDisplay window
EOPEN switch
FJog dial (N(play)/ENT)
G.(AMS, fast rewind), >(AMS,
fast forward) button
HBattery compartment
IX(pause) button
JVOL (volume) +
1)
, – button
Ki(earphones) jack
LREC(+N)/T MARK button
M•SEARCH/•LIGHT/ MENU
button
2)
Nx(stop) • CANCEL/CHG button
ODC IN 3V jack
PUSB cable connecting jack
QThe cover of the USB cable
connecting jack
RTerminals for attaching dry battery
case
1)
There aretactiledotsbesidethe VOL+ button
and the MIC (PLUG IN POWER) jack.
2)
• indicates a function that requires a slight
press of the button. indicates a function
that requires pressing the button for 2 seconds
or more.
The display window of the recorder
AOperating condition indication display
area
Displays the indications of each
operating condition.
x: stop
N: play
X: pause
m: fast rewind
M: fast forward
.,>: AMS
: record/record pause
BSelected operating condition display
area
Displays the operating mode, play
mode, or selected menu item, etc.
CBattery indication
Shows the approximate remaining
battery power. If the batteries are
weak, the indication becomes empty
and starts flashing.
DTrack number and group number
display area
Displays the track number or group
number.
EText information display area
Displays titles, menu items, error
messages, etc. Titles are preceded by
the following icons.
: track name
: artist name*
: album name*
: group name
: disc name
* Appears only for discs used in Hi-MD mode.
FTime display area
Displays the elapsed time, remaining
time of the track or disc, etc.
The earphones with a remote control
AVOL (volume) +, – control
BHOLD switch
Slide the switch in the direction of the
arrow to disable the buttons on the
remote control. To prevent the buttons
from being accidentally operated
when you carry the recorder, use this
function.
CClip
D(group) +, – button
ENX (play, pause) button
Fx(stop) button
G.(AMS, fast rewind), >(AMS,
fast forward) button
B
C
D
E
F
G
A

MZ-RH10
6
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE (LOWER) BLOCK
•This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY
3-2. CASE (LOWER) BLOCK
(Page 6)
3-3. MAIN BOARD
(Page 7) 3-4. PANEL (UPPER) BLOCK (Page 7)
3-5. MECHANISM DECK (MT-MZNH900-181J)
(Page 8)
3-7. GEAR (BSA), GEAR (SB)
(Page 9)
3-8. OP SERVICE ASSY
(Page 9)
3-9. DC MOTOR SSM18D/C-NP (SPINDLE) (M701),
DC MOTOR (SLED) (M702),
DC MOTOR UNIT (OVER WRITE HEAD UP/DOWN) (M703)
(Page 10)
3-10. HOLDER ASSY
(Page 10)
3-6. BATTERY CASE BLOCK
(Page 8)
SET
Note 1: The process described in can be performed in any order.
Note 2: Without completing the process described in , the next process can not be performed.
1 Open the battery lid assy
in the direction of arrow.
8 case (lower)
block
S895
knob (hold)
7 screw (M1.4)
2 battery lid assy
6 Slide the knob (open)
in the direction of arrow.
3 screw
(M1.4)
4 screw (M1.4)
5 two screws (M1.4)

MZ-RH10
7
3-3. MAIN BOARD
3-4. PANEL (UPPER) SECTION
1 Remove two solders.
1 Remove two solders.
6 flexible board
(CN501)
5
7 MAIN board
4 five toothed lock screws
3 flexible board
(CN471)
2 flexible board
(CN701)
2 Slide the open slider in the direction
of arrow A and open the panel (upper)
section in the direction of arrow B .
4 torsion spring (L)
1 flexible board
(CN471)
5 claw
6 panel (upper) section
A
B
3 two screws (M1.4)

MZ-RH10
8
3-5. MECHANISM DECK (MT-MZNH900-181J)
3-6. BATTERY CASE BLOCK
2 mechanism
(MT-MZNH900-181J)
1 two step screws (MD)
5 tension spring (lock)
7 battery case bloc
k
1 claw
6 open slider
2 MD standard pin
3 two screws
4 screw (M1.4)

MZ-RH10
9
3-7. GEAR (BSA), GEAR (SB)
3-8. OP SERVICE ASSY
1 self tap screw
2 thrust retainer spring
3 washer (0.8-2.5)
4 gear (BSA)
5 gear (SB)
1 Lead screw block assy is turned
and it removes from OP service assy.
2 OP service assy

MZ-RH10
10
3-9. DC MOTOR SSM18D/C-NP (SPINDLE) (M701), DC MOTOR (SLED) (M702),
DC MOTOR UNIT (OVER WRITE HEAD UP/DOWN) (M703)
3-10. HOLDER ASSY
3 two screws (M1.4)
4 DC motor (sled)
(M702)
1 Remove four solders of flexible board.
2 Remove two solders of flexible board.
6 three self tap screws
7 DC motor SSM18D/C-NP
(spindle) (M701)
5 motor base assy
9 DC motor unit
(over write head up/down)
(M703)
8 self tap screw
4 Remove the holder assy
to the direction of the arrow
A .
3 Open the holder assy.
1 boss
2 boss
A