Sharp HR-MB3 User manual

HR-MB3
SERVICE MANUAL
No. XXXXXXXXXXXXX
SHARP CORPORATION
CONTENTS
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications ................................................. 1-1
[2] Names of parts............................................... 1-1
CHAPTER 2. ADJUSTMENTS
[1] TEST Mode .................................................... 2-1
[2] Error History Display ...................................... 2-2
[3] Error Code List ............................................... 2-3
[4] Updating the firmware .................................... 2-4
[5] Replacing the HDD unit.................................. 2-4
[6] Downloading the latest firmware .................... 2-4
CHAPTER 3. MECHANISM BLOCKS
[1] Caution on diassembly................................... 3-1
CHAPTER 4. DIAGRAMS
[1] Block diagram ................................................ 4-1
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Notes on schematic diagram.......................... 5-1
[2] Types of transistor.......................................... 5-1
[3] Waveforms of circuit....................................... 5-2
[4] Voltage ........................................................... 5-3
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Schematic diagram........................................6-1
[2] Wiring side of PWB......................................6-13
CHAPTER 7. FLOWCHART
[1] Troubleshooting .............................................7-1
CHAPTER 8. OTHER
[1] Function table of IC .......................................8-1
Parts Guide
PORTABLE JUKEBOX
MODEL HR-MB3(S)

HR-MB3
– i –
1. Employing lead-free solder
"Main PWB" of this model employs lead-free solder. The LF symbol indicates
lead-free solder, and is attached on the PWB and service manuals. The alphabetical character following LF shows the type of
Example:
Indicates lead-free solder of tin, silver and copper.
2. Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder
may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, we recommend you to use a
dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station
or service branch in your area.
3. Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 C which is higher than the conventional lead solder by 40 C,
and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of
time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded,
remove the bit from the PWB as soon as you confirm the steady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn on and off the
power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use
of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
Ref No. DescriptionParts No.
PWB-A 92LPWB6362HDDS Main
lead-free solder.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.

HR-MB3
1 – 1
AudioHR-MB3Service ManualHR-MB3MarketE
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications
[2] Names of parts
Power source: DC 6 V: AC adaptor
(AC 100 - 240 V, 50/60 Hz)
DC 5 V: USB bus power
Power consumption: 7 W (switching type AC adaptor)
Charging time: Approx. 4 hours
(fully charged, when using the
AC adaptor included with the
unit)
Dimensions: Width: 56.5 mm (2-1/4")
Height: 17.4 mm (11/16")
Depth: 105.5 mm (4-5/32")
Weight: 113 g (0.25 lbs.)
Sockets: Earphones
(impedance: 32 ohms)
USB (Exclusive type)
DC input
Frequency response: 20 - 20,000 Hz
Audio format: WMA (CBR/VBR),
MP3 (CBR/VBR), WAV (PCM)
Bit rate: WMA (32 - 320 kbps),
MP3 (8 - 320 kbps)
Sampling frequency: WMA(8-48kHz),
MP3(8-48kHz),
WAV (22.05 - 48 kHz)
Music MetaData: ID3 Tag (Version 1.0/1.1/2.3/
2.4), WMA object
Storage media: 4 GB hard disk drive (1 inch)
Output level: Earphones: 5 mW + 5 mW
(maximum output level/32
ohms)
Battery life: Up to 20 hours of continuous
playback by fully charged re-
chargeable Lithium-ion battery
PC interface: USB 1.1/2.0
Notes:
A combination of sampling frequency and bit rate dif-
fers depending on audio format.
Continuous playback:
At 128 kbps, in MP3 format (earphone output: 0.1 mW
+ 0.1 mW, backlight: not set to "Always", equalizer: set
to "Flat")
Actual battery life will vary with use.
The values are the standard values when the unit is
used at an ambient temperature of 25°C (77°F).
1. Earphones Socket
2. Hold Switch
3. Play Mode/Information Indicator
4. Battery Indicator
5. Return/Power Off Button
6. Character/Time/
Information Indicator
7. Menu/Power On Button
8. Cursor Button
9. Play/Stop/Enter/Power On Button
10.6VDCInputSocket
11. USB Socket (Exclusive type)
12. Battery Switch
Normal
1:00[3/8]
STOP
Music Name1
Artist Name1
Album Name1
1
3
5
9
6
7
8
2
10 11 12
4
The display varies depending on the operation.
The display language can be changed (default: En-
glish).

HR-MB3
2 – 1
AudioHR-MB3Service ManualHR-MB3MarketE
CHAPTER 2. ADJUSTMENTS
[1] TEST Mode
Entering/exiting test mode
Screen
Songs ***
Total Space ***
Free Space ***
Version *.***
TEST MODE
Version *.***
EEPROM **
No
Yes
EXIT TEST MODE
Exit
Change & Exit
Default load
Yes
No
Yes
No
No
Yes
Yes
No
No
Yes
About
Open "About" screen from MENU.
Enter test mode standby and display the version of
the firmware and Parameter.
To enter test mode, press these keys in the following
order:
MENU key
RIGHT key
DOWN key
UP key
RIGHT key (Press for 2 seconds.)
RETURN key ?
Test mode ends, and the TOP screen
appears.
Check that Parameter is updated and EXIT is
displayed.
Use UP key and DOWN key to select EXIT,
Change & Exit or Default load.
Update the specified area of Parameter.
MENU key ?
RETURN key ?
EXIT selected ?
Change & Exit selected ?
Write the default data for Parameter on
to Parameter.
ENTER key ?
1
2
3
4
5

HR-MB3
2 – 2
[2] Error History Display
Error history display
Screen
E-DATA
No
Yes
E-DATA
********
Yes
No
Yes
*********: Error code
No
No
Yes
E-DATA
Yes Clear?
No
Yes
No
No
Yes
Error history appears.
Error history content appears.
Use UP key and DOWN key to scroll.
*The latest history to be displayed in most significant
*Up to 10 error history records are displayed.
History clear mode.
ENTER key ?
ENTER key ?
ENTER key ?
RETURN key ?
MENU key ?
History is cleared.
Test mode switches to standby.
Test mode standby.
RETURN key ?
MENU key ?

HR-MB3
2 – 3
[3] Error Code List
Error Code List
How to read
TYPE VIEW CODE
num Type error num Type error num Type error
01 ETYPE_DS_ERROR Error from Data Server. 01 EVIEW_LOW_BATTERY_PLAY Battery has become low during playback. 0001 REALTIME_FAIL 02 ETYPE_UI_ERROR Error in UI. 02 EVIEW_NOT_OPEN_MASTERTBL Cannot open MASTER.TBL. 0002 DECODE_ERROR 04
ETYPE_BATT_ERROR
Battery error. 03 EVIEW_READERR_MASTERTBL Read error when reading MASTER.TBL 0003 REC_MEDIA_FULL
08 ETYPE_DB_ERROR Error from DB. 04 EVIEW_INVALID_MASTERTBL MASTER.TBL is invalid or the file format is not supported. 0004 MEDIA_NOT_READABLE 10
ETYPE_MKPL_ERROR
Error when creating default playlist.
05 EVIEW_CANT_FIND_FILE_DIR Cannot search files or folders. 0005 MEDIA_NOT_AVAILABLE
06 EVIEW_FILE_NOT_OPEN Cannot open MP3, WMA or WAV file. 0006 MEDIA_NOT_WRITABLE 07 EVIEW_READ_ERR_TAG Read error when searching for tag of MP3, WMA or WAV file. 0007 BAD_MEDIA 08 EVIEW_INVALID_TAG Tag of MP3, WMA or WAV file is invalid or not supported. 8001 MSG_FILE_NOT_FOUND 09 EVIEW_CANT_DEL_MASTERTBL Cannot rename/delete the existing MASTER.TBL. 8002 MSG_EMPTY_FILE
0A
EVIEW_CANT_CREATE_MASTERTBL
Cannot create a new MASTER.TBL. 8003 MSG_META_DATA_NOT_FOUND
0B EVIEW_WRITE_ERR_MASTERTBL MASTER.TBL write error. 8005 MSG_INVALID_META_TYPE 0C EVIEW_NOT_FREE_MASTERTBL Free space is likely to become insufficient when writing MASTER.TBL. 8007 MSG_UNSUPPORTED_BITRATE 0D EVIEW_USER_STOP_MASTERTBL Writing MASTER.TBL has been interrupted at the user's request. 8008 MSG_UNSUPPORTED_SAMPLERATE
0E
EVIEW_LOW_BATTERY_MASTERTBL
Writing MASTER.TBL has been interrupted due to low battery. 8009 MSG_AIC23_WRITE_FAILURE
0F
EVIEW_UNKNOWN_STOP_MASTERTBL
Writing MASTER.TBL has been interrupted due to sudden power cut, etc. 800A MSG_INVALID_AIC23_REG_ADDR
10
EVIEW_FILE_NOT_FOUND_MASTERTBL
No target file was found when creating MASTER.TBL. 800B MSG_INVALID_MONO_MODE
11 EVIEW_FILE_NOT_FOUND_REC Cannot find the existing file list . 800D MSG_INVALID_VOL_LEVEL 12 EVIEW_CANT_CREATE_REC Cannot create a new WMA or WAV file. 8010 MSG_NO_CHANNELS_AVAILABLE 13 EVIEW_CANT_CREATE_DIR_REC Cannot create a directory. 8011 MSG_INVALID_CHANNEL_ID 14 EVIEW_WRITE_ERR_REC WMA or WAV file write error. 8012 MSG_FAILURE 15 EVIEW_MAX_FILE_SIZE_REC
File size limit (FAT32: 4G) has been or is likely to be exceeded when writing WMA or WAV file
8014 MSG_EOF
16 EVIEW_NOT_FREE_REC Free space has or is likely to become insufficient when writing WMA or WAV file. 8015 MSG_MEDIA_NOT_AVAILABLE 17 EVIEW_LOW_BATTERY_REC Writing WMA or WAV file has been interrupted due to low battery. 8016 MSG_MEDIA_FULL 18 EVIEW_UNKNOWN_STOP_REC Writing WMA or WAV file has been interrupted due to sudden power cut, etc. 8017 MSG_FILE_IN_USE 19 EVIEW_NOT_OPEN_PLAYLIST Cannot open the specified M3U or PLS file. 8019 MSG_DIRECTORY_NOT_EMPTY
1A EVIEW_PLAY_ERROR_PLAYLIST Read error during playback of M3U or PLS file. 801A MSG_DUPLICATE_FILENAME 1B
EVIEW_DIR_NOT_FOUND_PLAYLIST
Cannot find the existing file list. (Cannot find a directory.) 801B MSG_INVALID_FILE_TYPE
1C EVIEW_CANT_CREATE_PLAYLIST Cannot create a new M3U or PLS file. 801F MSG_BOF 1D EVIEW_READ_ERR_PLAYLIST M3U or PLS file read error. 8021 MSG_PARTIAL_LISTING
1E EVIEW_CANT_OPEN_PLAYLIST Cannot open the specified M3U or PLSfile. 8022 MSG_FIFO_EMPTY 1F EVIEW_WRITE_ERR_PLAYLIST M3U or PLS file write error. 8023 MSG_NOT_AVAILABLE
20 EVIEW_NOT_FREE_PLAYLIST Free space has become insufficient when writing M3U or PLS file. 8024 MSG_INVALID_FILE_FORMAT 21 EVIEW_USER_STOP_PLAYLIST Writing M3U or PLS file has been interrupted at the user's request. 8025 MSG_CHANNEL_IN_BROWSE 22 EVIEW_LOW_BATTERY_PLAYLIST Writing M3U or PLS file has been interrupted due to low battery. 8026 MSG_CHANNEL_NOT_IN_BROWSE 23
EVIEW_UNKNOWN_STOP_PLAYLIST
Writing M3U or PLS file has been interrupted due to sudden power cut, etc. 8028 MSG_MEDIA_TIMEOUT
24 EVIEW_LOW_BATTERY Low battery. 8029 MSG_BAD_MEDIA 25 EVIEW_BATTERY_ERR Battery error. 802A MSG_DIR_ID_NOT_A_DIRECTORY 26 EVIEW_FILE_ERROR File error. 802B MSG_INSUFFICIENT_BUFFER_SIZE 27 EVIEW_FILE_NONE No file exists. 802D MSG_UNEXPECTED_ERROR 28 EVIEW_DISK_ERROR Disk error. 802E MSG_UNSUPPORTED_FAT_TYPE 29 EVIEW_HOLD HOLD function is active. 802F MSG_UNSUPPORTED_FILE_FORMAT
2A EVIEW_INTERNAL_ERROR Internal error. 8030 MSG_UNSUPPORTED_BIT_AND_SMPL
8031 MSG_LSE_DRM_INIT_FAILED 8032
MSG_UNSUPPORTED_DIRECTORY_STRUCTURE
8033 MSG_UNSUPPORTED_MEDIA_SIZE 8034 MSG_DEFAULT_REC_FILE_LIMIT 8035 MSG_UNSUPPORTED_IMAGE_FORMAT 8036 MSG_UNSUPPORTED_IMAGE_SIZE 8037
MSG_UNSUPPORTED_NUMBER_OF_CHANNELS
8038 MSG_UID_NOT_IN_LIST 8039 MSG_FILE_ERROR
803A MSG_FILE_NOT_OPEN 803B MSG_INVALID_MODE
803C MSG_INVALID_TRACK_TYPE
803D MSG_CACHE_FULL
8200 DB_ERR 8201 DB_ERR_RECORD_LIMIT 8202 DB_FOLDER_DEPTH_LIMIT 8203 DB_DEFAULT_FOLDER_NOT_EXIST 8204 DB_ERR_FILE_CHECKSUM 8205 DB_ERR_CREATE_DIR 8206 DB_ERR_CREATE_FILE 8207 DB_ERR_NOT_MATCH_PROFILE 8208 DB_ERR_MEDIA 8209 DB_ERR_OPEN_FILE
820A DB_ERR_FILE_CORRUPT 820B DB_ERR_CLOSE_FILE
820C DB_ERR_READ_FILE
820D DB_ERR_WRITE_FILE
820E DB_ERR_OPEN_CHANNEL
820F DB_ERR_CLOSE_CHANNEL 8210 DB_ERR_CHDIR 8211 DB_ERR_DUPLICATE_FILENAME 8212 DB_INVALID_INDEX 8214 DB_ERR_CREATE_NEW_DB 8215 DB_ERR_RENAME_OLD_DB 8216 DB_ERR_NO_DB 8217 DB_ERR_NO_CHANNEL 8218 DB_ERR_CREATE_NEW_PLS 8219 DB_ERR_FILELIST
821A DB_ERR_DELETE_FILE 821B DB_ERR_SYSTEM
821C DB_ERR_PLS_ADD_SONG
821D DB_ERR_LOW_BATTERY
821E DB_ERR_NO_SONG
C001 eERR_BATT_CHARGE Charging error. C002 eERR_BATT_POWER Power is low.
TYPE ** (2Byte) VIEW ** (2Byte) CODE **** (4Byte)
** ** **** ^^ ^^ ^^^^

HR-MB3
2 – 4
[4] Updating the firmware
1. Plug in the AC adaptor.
1. The charging mode is activated. Press the ENTER or MENU key to turn on the power.
2. Copy the firmware.
1. Connect to a PC with the USB cable.
2. Copy the UPGRADE.BIN to ROOT of the drive.
3. Disconnect the USB cable.
3. Execute update.
1. Press the RETURN key to turn off the power, and unplug the AC adaptor.
2. Plug in the AC adaptor again.
3. "UpdatingFW..." appears and the update starts.
4. After the update is completed, the charging mode is activated.
4. Perform the following:
1. From the Menu List, open the About screen and check the firmware version.
2. From the Menu List, execute Format.
3. From the Menu List, execute Default.
4. Enter the test mode, then from Exit test mode, execute Default load.
[5] Replacing the HDD unit
1. Replace the HDD unit.
2. Plug in the AC adaptor.
1. "HDD error" appears.
2. Press these keys in the following order:
• MENU KEY
• RIGHT KEY
• DOWN KEY
•UPKEY
• RIGHT KEY (Press for 2 seconds.)
3. "Formatting..." appears and the format starts.
4. Follow these onscreen instructions:
i) ConnectUSB
ii) CopyUpgrade.Bin
iii) UnplugUSB
3. Disconnect the USB cable. "UpdatingFW..." appears and the update starts.
After the update is completed, the charging mode is activated.
4. Perform the following:
1. From the Menu List, open the About screen and check the firmware version.
2. From the Menu List, execute Default.
3. Enter the test mode, then from Exit test mode, execute Default load.
[6] Downloading the latest firmware
1. Visit the following websites
1. "http://sharp-world.com/worldwide/index.html"....Except for U.K.
2. “http://www.sharp.co.uk/”...For U.K.

HR-MB3
3 – 1
AudioHR-MB3Service ManualHR-MB3MarketE
CHAPTER 3. MECHANISM BLOCKS
[1] Caution on diassembly
Caution on Disassembly
Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:
1. Take cassette tape, and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange
the leads where they were before disassembling.
1 Bottom Cabinet 1. Screw ......................(A1) x5
2MainPWB
2. Socket ...................... (A2) x1
2. HDD Holder ..............(B2) x1
1. Screw ....................... (B1) x4
4. Solder Joints............ (B4) x2
6. Solder Joints.......... (B6) x35
7. LCD Unit .................. (B7) x1
3. Flexible PWB ........... (B3) x1
5. LCD Shield Case ..... (B5) x1
STEP REMOVAL PROCEDURE
Bottom Cabinet
Top Cabinet
(B2)x1
(A1)x3
M1.4x2mm (A1)x2
M1.4x5mm
Top Cabinet
Main PWB
HDD
(B1)x4
M1.4x4mm
(B5)x1
(B6)x33
(B4)x1
(B6)x2
(B4)x1
(B3)x1
(B7)x1
Main PWB
Pull
Pull
(A2)x1
Note: A special jig is necessary for the installation
of the LCD unit.

HR-MB3
4 – 1
AudioHR-MB3Service ManualHR-MB3MarketE
CHAPTER 4. DIAGRAMS
[1] Block diagram
J400 DC SOCKET 6V OUTPUT
SC200 USB SOCKET 5V OUTPUT P401 Li-ion Battery 3.7V OUTPUT
S401 BATTERY SW
START UP CIRCUIT D401, Q403
Li-ion CHARGE & POWER MANAG
4
20
15~17
5, 6
Q1
IC400
BQ24032
IC403
TPS62220
IC401
TPS62200
IC404
TPS62220
BACK LIGHT
KEY INPUT
IC302
1112B31M
3.1V
REGULATOR
IC405 MM3097
IC402 TPS72201
Q3 Q2
DC/DC DOWN 3.3V (400mA Class)
DC/DC DOWN 1.6V (300mA Class) DC/DC DOWN 3.3V (400mA Class)
DC/DC UP 7.5V 20mA
LCO MODULE 3.3V
1.6V REGULATOR
3.3V
3.3V
1.6V
29~39
42,44,45,47,48
50,51,53
3
3
3
4
1
16~28, 30
IC100
TMS320DA255
DSP
HDD UNIT 3.3V IC201
CY68013A
USB2.0(Slave)
IC202
BR24L64F
EEPROM
1.6V (CORE) 1.6V (RTC) 3.3V
J300 HEADPHONES
IC302
3.1V
9,10
5,6
23,24,25
3.3V
19,25,26,29,31,33
37~48
2,4,5,7,8 10,11,13, 15~26
8,9
5,6
15,16
AUDIO DAC
IC301
TLV320DAC23
IC503
AT24C512
EEPROM
3~7
IC500 256 MB SDRAM 3.3V
1,2,8,9,18~25,29~31,
33~38,40,42,44~52
3,5~8,10,12~17
SIGNAL & DATA& CONTROL LINE
POWER SUPPLY LINE
Figure 4-1 BLOCK DIAGRAM (1/1)

HR-MB3
5 – 1
AudioHR-MB3Service ManualHR-MB3MarketE
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Notes on schematic diagram
•Resistor:
To differentiate the units of resistors, such symbol as K and M are
used: the symbol K means 1000 ohm and the symbol M means
1000 kohm and the resistor without any symbol is ohm-type resis-
tor. Besides, the one with “Fusible” is a fuse type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this symbol P
means pico-farad and the unit of the capacitor without such a sym-
bol is microfarad. As to electrolytic capacitor, the expression
“capacitance/withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this model are
subject to change for improvement without prior notice.
[2] Types of transistor
REF. NO DESCRIPTION POSITION
SW300 HOLD ON—OFF
SW301 RETURN/POWER OFF ON—OFF
SW302 MENU/POWER ON ON—OFF
SW303 FUNCTION ON—OFF
SW304 SKIP DOWN/SCROLL LEFT/REVIEW ON—OFF
SW305 VOLUME UP/SCROLL UP ON—OFF
SW306 VOLUME DOWN/SCROLL DOWN ON—OFF
SW307 SKIP UP/SCROLLRIGHT/CUE ON—OFF
SW401 BATTERY/CUT ON—OFF
REF. NO DESCRIPTION POSITION
TOP VIEW
TOP VIEW TOP VIEW
1SS400
RB520530
RB521S30
VDZS33B
VDZS8R2B
FS1J3TP
RB106M3
RN1104
RN2104
MCH3405
KDS121 E
B
(G)
(3)
E
(S)
(1)
C
(D)
(2)
TOP
VIEW