MEX-1HD - Sony Car Audio Service Manual (repair manual)

Model
MEX-1HD
Pages
124
Size
7.32 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
mex-1hd.pdf
Date

View Sony MEX-1HD Service Manual online

SERVICE MANUAL
AUDIO LIBRARY SYSTEM
SPECIFICATIONS
MEX-1HD
Model Name Using Similar Mechanism
NEW
CD Drive Mechanism Type
MG-550D-156
Optical Block Name
CDM-3021EBG
Optical Pick-up Name
DAX-21EG
US Model
Canadian Model
E Model
Australian Model
Ver. 1.4  2007.08
9-873-923-05
Sony Corporation
2007H05-1
eVehicle Division
© 2007.08
Published by Sony Techno Create Corporation
CD Player section
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
“MG Memory Stick” section
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Recording time (when using the supplied 64MB 
“MagicGate Memory Stick”)
Approx. 60 min. (132kbps)
Approx. 80 min. (105kbps)
Recording format
Adaptive Transform 
Acoustic Coding 3 
(ATRAC3)
HDD section
Capacity 10 GB
Recording format
Adaptive Transform 
Acoustic Coding 3 
(ATRAC3)
Frequency response
20 to 20,000 Hz 
(single signal measurement)
Tuner section
FM
Tuning range
87.5 – 107.9 MHz
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz/450 kHz
Usable sensitivity
8 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
66 dB (stereo), 
72 dB (mono)
Harmonic distortion at 1 kHz
0.6 % (stereo),
0.3 % (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
AM
Tuning range
530 – 1,710 kHz
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz/450 kHz
Sensitivity
30 
µV
Power amplifier section
Outputs
Speaker outputs 
(sure seal connectors)
Speaker impedance
4 – 8 ohms
Maximum power output
52 W 
×  4 (at 4 ohms)
General
Outputs
Audio outputs (front/rear)
Subwoofer output (mono)
Power antenna relay control 
terminal
Power amplifier control 
terminal
Inputs
Telephone ATT control 
terminal
Illumination control 
terminal
AUX IN terminal
Antenna input terminal
Tone controls
Bass 
±8 dB at 100 Hz
Treble 
±8 dB at 10 kHz
Loudness
+8 dB at 100 Hz
+2 dB at 10 kHz
Power requirements
12 V DC car battery 
(negative ground)
Dimensions
Approx. 178 
×  50 ×  182 mm 
(7 
1
/
8
 
×  2 ×  7 
1
/
4
 in.)
(w/h/d)
Mounting dimensions
Approx. 182 
×  53 ×  161 mm 
(7 
1
/
4
 
×  2 
1
/
8
 
×  6 
3
/
8
 in.)
(w/h/d)
Mass
Approx. 2.0 kg
(4 lb. 7 oz.)
Supplied accessories
Parts for installation and 
connections (1 set)
Front panel case (1)
Cleaning cloth (1)
Digital I/O cable (1)
Note
This unit cannot be connected to a digital preamplifier 
or an equalizer.
Design and specifications are subject to change 
without notice.
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
23 watts per channel minimum continuous average power into 4 ohms,
4 channels driven from 20 Hz to 20 kHz with no more than 5% total
harmonic distortion.
AUDIO POWER SPECIFICATIONS
(US model only)
2
MEX-1HD
1.
SERVICING NOTES
................................................
5
2.
GENERAL
Location of Controls .......................................................
7
3.
DISASSEMBLY
3-1. Disassembly Flow ........................................................... 10
3-2. Cover ............................................................................... 11
3-3. Base Panel Assy .............................................................. 11
3-4. Sub Panel (CD) Assy ...................................................... 12
3-5. Mechanism Deck (MG-550D-156) ................................ 12
3-6. Motor Block Assy, Cam Block Assy .............................. 13
3-7. Motor Assy (Front Panel Open/Close) (M601),
SWITCH Board ............................................................... 13
3-8. MAIN Board, POWER Board ........................................ 14
3-9. Hard Disk Drive (2.5 inch) Unit ..................................... 15
3-10. SUB Board ...................................................................... 15
3-11. Heat Sink, DC Fan (M501) ............................................. 16
3-12. Belt (L), LE Motor Assy (Tray Open/Close) (M103) .... 16
3-13. Tray (UD) Assy ............................................................... 17
3-14. OP Assy (CDM-3021EBG) ............................................ 17
3-15. SERVO Board ................................................................. 18
4.
ASSEMBLY
4-1. Assembly Flow ................................................................ 19
4-2. Motor Block Assy ........................................................... 19
4-3. Cam Block Assy .............................................................. 20
4-4. Phase Alignment of Motor Block Assy and
Cam Block Assy .............................................................. 20
5.
TEST  MODE
.............................................................. 21
6.
DIAGRAMS
6-1. Block Diagram
– SERVO, HD/MS/USB INTERFACE Section – .......... 27
6-2. Block Diagram  – CPU, DISPLAY Section – ................ 28
6-3. Block Diagram  – AUDIO, SYSTEM Section – ............ 29
6-4. Block Diagram  – POWER SUPPLY Section – ............. 30
6-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 31
6-6. Printed Wiring Board  – SERVO Board (Side A) – ....... 32
6-7. Printed Wiring Board  – SERVO Board (Side B) – ....... 33
6-8. Schematic Diagram  – SERVO Board (1/3) – ................ 34
6-9. Schematic Diagram  – SERVO Board (2/3) – ................ 35
6-10. Schematic Diagram  – SERVO Board (3/3) – ................ 36
6-11. Printed Wiring Board  – MAIN Board (Side A) – ......... 38
6-12. Printed Wiring Board  – MAIN Board (Side B) – ......... 39
6-13. Schematic Diagram – MAIN Board (1/9) – ................... 40
6-14. Schematic Diagram – MAIN Board (2/9) – ................... 41
6-15. Schematic Diagram – MAIN Board (3/9) – ................... 42
6-16. Schematic Diagram – MAIN Board (4/9) – ................... 43
6-17. Schematic Diagram – MAIN Board (5/9) – ................... 44
6-18. Schematic Diagram – MAIN Board (6/9) – ................... 45
6-19. Schematic Diagram – MAIN Board (7/9) – ................... 46
6-20. Schematic Diagram – MAIN Board (8/9) – ................... 47
6-21. Schematic Diagram – MAIN Board (9/9) – ................... 48
6-22. Schematic Diagram – SUB Board (1/5) – ...................... 49
6-23. Schematic Diagram – SUB (2/5)/SWITCH Boards – .... 50
6-24. Schematic Diagram – SUB Board (3/5) – ...................... 51
6-25. Schematic Diagram – SUB Board (4/5) – ...................... 52
6-26. Schematic Diagram – SUB Board (5/5) – ...................... 53
6-27. Printed Wiring Boards
– SUB (Component Side)/Switch Boards – ................... 54
6-28. Printed Wiring Board
– SUB Board (Conductor Side) – ................................... 55
6-29. Printed Wiring Board  – POWER Board – ..................... 56
6-30. Schematic Diagram  – POWER Board – ........................ 57
6-31. Printed Wiring Board  – DISPLAY Board – .................. 58
6-32. Schematic Diagram  – DISPLAY Board – ..................... 59
6-33. IC Pin Function Description ........................................... 69
7.
EXPLODED  VIEWS
7-1. Cover Section ................................................................. 97
7-2. Front Panel Section ........................................................ 98
7-3. ARM Section .................................................................. 99
7-4. Hard Disk, POWER Board Section ............................... 100
7-5. MAIN Board Section ..................................................... 101
7-6. Chassis Section .............................................................. 102
7-7. SUB Board Section ........................................................ 103
7-8. Mechanism Deck Section (MG-550D-156) .................. 104
8.
ELECTRICAL  PARTS  LIST
.............................. 106
TABLE  OF  CONTENTS
Ver 1.1
3
MEX-1HD
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
0
  OR  DOTTED
LINE  WITH  MARK  
0
  ON  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  PUB-
LISHED  BY  SONY.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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
other than those specified herein may result in hazardous ra-
diation exposure.
ATTENTION  AU  COMPOSANT  AYANT  RAPPORT
À  LA  SÉCURITÉ!
LES  COMPOSANTS  IDENTIFIÉS  PAR  UNE  MARQUE  
0
SUR  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.
• The  recorded music is limited to private use only. 
Use of the music beyond this limit requires 
permission of the copyright holders.
• Sony is not responsible for music files that are not 
saved on this unit due to unsuccessful recording 
from CD or music downloading.
• Sony is not responsible for any files that are 
damaged or erased from the hard disc.
Notes
Notes on CD-Rs (recordable CDs)/CD-
RWs (rewritable CDs)
This unit can play the following discs:
• Some  CD-Rs/CD-RWs (depending on the 
equipment used for its recording or the 
condition of the disc) may not play on this unit.
• You  cannot play a CD-R/CD-RW that is not 
finalized*.
• You  can play MP3 files recorded on CD-
ROMs, CD-Rs, and CD-RWs.
• A CD-R/CD-RW to which a session can be 
added can be played.
*
A process necessary for a recorded CD-R/CD-RW 
disc to be played on the audio CD player.
Type of discs
Label on the disc
Audio CD
MP3 files
4
MEX-1HD
Notes on MP3 files
MP3 (MPEG 1 Audio Layer-3) is a standard 
technology and format for compressing a sound 
sequence. The file is compressed to about 1/10 of 
its original size. Sounds outside the range of 
human hearing are compressed while the sounds 
we can hear are not compressed.
Notes on discs
You can play MP3 files recorded on CD-ROMs, 
CD-Rs, and CD-RWs.
The disc must be in the ISO 9660*
1
 level 1 or 
level 2 format, or Joliet or Romeo in the 
expansion format.
You can use a disc recorded in Multi Session*
2
.
*
1
ISO 9660 Format 
The most common international standard for 
the logical format of files and folders on a 
CD-ROM. 
There are several specification levels. In 
Level 1, file names must be in the 8.3 format 
(no more than 8 characters in the name, no 
more than 3 characters in the extension 
“.MP3”) and in capital letters. Folder names 
can be no longer than 8 characters. There can 
be no more than 8 nested folder levels. Level 
2 specifications allow file names up to 31 
characters long. 
Each folder can have up to 8 trees. 
For Joliet or Romeo in the expansion format, 
make sure of the contents of the writing 
software, etc.
*
2
Multi Session
This is a recording method that enables 
adding of data using the Track-At-Once 
method. Conventional CDs begin at a CD 
control area called the Lead-in and end at an 
area called Lead-out. A Multi Session CD is a 
CD having multiple sessions, with each 
segment from Lead-in to Lead-out regarded 
as a single session.
CD-Extra: The format which records audio 
(audio CD data) as tracks on session 1, and 
records data as tracks on session 2.
Mixed CD: In this format, data is recorded as 
track, and audio (audio CD data) is recorded 
as track 2.
Notes
• With formats other than ISO 9660 level 1 and level 2, 
folder names or file names may not be displayed 
correctly.
• When naming, be sure to add the file extension 
“.MP3” to the file name.
• If you put the extension “.MP3” to a file other than 
MP3, the unit cannot recognize the file properly and 
will generate random noise that could damage your 
speakers.
• The following discs take a longer time to start 
playback.
– a  disc recorded with a complicated tree structure.
– a disc recorded in Multi Session.
– a  disc to which data can be added.
Cautions when playing a disc that is recorded in 
Multi Session
• When the first track of the first session is audio CD 
data:
Only audio CD data is played back.
• When the first track of the first session is not audio 
CD data:
– If an MP3 file is in the disc, only MP3 file(s) play 
back and other data is skipped. (Audio CD data is 
not recognized.)
– If no MP3 file is in the disc, “NO Music” is 
displayed and nothing is played back. (Audio CD 
data is not recognized.)

Download Sony MEX-1HD Service Manual (Repair Manual)

Here you can view online and download Sony MEX-1HD Service Manual in PDF. MEX-1HD service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony MEX-1HD Car Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.