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DPC-MP727/MP922

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CONTENTS / ACCESSORIES / CAUTIONS

SPECIFICATIONS ............................................Cover
CONTENTS / ACCESSORIES / CAUTIONS........... 2
CIRCUIT DESCRIPTION ..........................................3
TEST MODE .............................................................6
ADJUSTMENT ..........................................................7

PC BOARD .............................................................. 8
SCHEMATIC DIAGRAM ........................................ 10
EXPLODED VIEW ..................................................14
PARTS LIST ...........................................................15

Contents

Accessories

Cautions

Media that can be played back with this
equipment

Usable media apart from audio CDs (CD-DA)
Usable media

: CD-ROM, CD-R, CD-RW

Usable formats

: ISO9660 level 1 and level 2 

(excluding expanded formats)

Files that can be played back: MP3 and WMA files

Creating media for playing back on this
equipment

Compressing MP3 and WMA files
Please set up the transfer bit rate setting for the compression
software when compressing MP3 and WMA files as follows:
MP3 Files

: 128kbps recommended (32kbps-320kbps)

WMA Files

: 128kbps recommended (64kbps-160kbps)

This unit is compatible with 32kHz, 44.1kHz (recommended)
and 48kHz sampling frequencies.

Categorizing folders

As MP3 and WMA files are compressed into high-quality sound
files at an extremely high rate of compression, it is possible to
record several times more tracks than audio CDs onto a single
medium. It is therefore convenient to split the tracks into differ-
ent folders by genre, artist or album for retrieval and repeat play-
back purposes.

A maximum of 23 folders or a maximum of 200 files can be
stored on a single media.

There are cases where it is not possible to save folders in the
desired sequence depending on the software being used.

Naming files

Single-byte characters between A and Z, single-byte numerals
between 0 and 9, and the single-byte underscore (_) can be
used when naming files. A maximum of twelve characters can
be displayed. Ensure that the ".MP3" (MP3 files) or ".WMA"
(WMA files) extension logs are attached to all file names.

Never add the MP3 or WMA extension logs to any files other
than MP3 and WMA files. If the MP3 or WMA extension logs
are added to any files other than MP3 and WMA files, the
equipment will assume that they can be played back, and this
will produce loud noises in the headphones, resulting in dam-
age of adverse effects.

Hint for when naming folders and files

When media containing MP3 and WMA files are played back on
this equipment, the sequence in which each track is played back
will be the same as the sequence in which they were saved. It is
possible to set up the playback sequence by adding numbers
from between 01 and 99 to the front of the folder and the file
name when saving the file.

There are cases where it is not possible to save files in the
desired sequence depending on the software being used.

Additional information

Depending on the MP3 and WMA compression software in use,
it is possible to save track titles, artist names and other informa-
tion together with each sound file as additional information.
Although it is possible to display pre-recorded title and artist
information with this information, it is necessary to ensure that
this information has been entered in single-byte alphanumericals
(Up to a maximum of 30 alphanumericals for each.).

The method of entering title and artist information will differ in
accordance with the compression software. Refer to the com-
pression software's instruction manual or help file.

Confirming media and files

Check to ascertain that MP3 and WMA files can be played back
correctly on the personal computer in use prior to saving them
onto the media. Check to ensure that the saved file can be
played back normally. 

It is not possible to confirm that files can be played back cor-
rectly while they are being saved onto the media.

When saving files onto media

Ensure that the session is closed or finalized when data has
been written on media. There are cases where media on which
the session has not be closed or finalized will not be played
back correctly with this equipment.

There are cases were the folder names and file names will not
be displayed correctly depending on the software used to
save them.

Do not store files or folders other than MP3 and WMA on
media to be played back with this equipment.

It is recommended that ten or less sessions are stored when
recording MP3 and WMA files onto a medium.

There are cases where playback is not possible when MP3
and WMA files (CD-ROM) and music CD information (CD-DA)
are saved on the same media.

Remote controller
(A70-1490-05)

Rechargeable batteries
(W09-1267-05)

Battery carrying case
(W01-0984-05)

Car cassette adapter (CAC-3A)
(W01-0989-05)

AC plug adapter
(E03-0115-05)

Stereo headphones
(W01-0993-05)

Stereo headphones
(W01-1000-05)

External battery case
(W01-0998-05)

Car battery adapter
(W01-0921-05)

AC adapter
(W08-0658-05): E
(W08-0659-05): T
(W08-0660-05): X
(W08-0667-15): M
(W08-0682-05): K

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Summary of Contents for DPC-MP727

Page 1: ...n market LR6 AA x 2 or 4 DC 3V Rechargeable batteries NB 150 x 2 DC 2 4V Maximum external dimensions width x height x depth 129mm x 32mm x 138mm 5 1 16 x 1 1 4 x 5 7 16 Weight net 260g 0 6lb Battery life expectancy during continual repeated playback The standard accessories vary depending on the model of the unit The accessories which are not standard are optionally available For details please co...

Page 2: ...ck sequence by adding numbers from between 01 and 99 to the front of the folder and the file name when saving the file There are cases where it is not possible to save files in the desired sequence depending on the software being used Additional information Depending on the MP3 and WMA compression software in use it is possible to save track titles artist names and other informa tion together with...

Page 3: ...signal input from DSP IC15 40 ACDET I Detection port of AC adaptor DETECTED 41 BBST O Control port of bass boost OFF ON 42 HOLD I Input port of hold switch OFF ON 43 VREF GND 44 LBATT I Battery level detection port 45 VOLUME I Input port of volume 46 P46 O Crystal oscillation circuit is stopped when in stop mode Hi 47 P47 WDOUT Unused 48 LEDDRV Unused 49 ELDDRV Unused 50 CHG O Rechargeable active ...

Page 4: ...O Function ACTIVE H L 1 DVDD3V DRAM interface power supply 2 3 D0 D1 I O DRAM data input output signal D0 D1 4 NEW O DRAM writing enable signal 5 NRAS O DRAM RAS control signal 6 7 D2 D3 I O DRAM data input output signal D2 D3 8 9 NCAS 0 1 O DRAM CAS control signal 0 1 10 19 A8 A3 O DRAM address signal A8 A3 20 DVSS2 Digital ground 21 DVDD2 Digital power supply 22 SPOUT O Spindle motor drive signa...

Page 5: ...LK I Microprocessor command clock signal input 62 MDATA I Microprocessor command data signal input 63 MLD I Microprocessor command load signal input Load 64 BLKCK O Sub code block clock signal output fBLKCK 75Hz normal playback 65 SQCK I O Command change over Sub code Q register external clock input 66 SUBQ O Command change over Sub code Q data output 67 DMUTE I O Command change over Muting input ...

Page 6: ...ged 09 TG Value TEXP Value 09 Mode 10 TBAL Value TOFS Value 10 Mode STOP key 01TEST Stop the CD operation FF key The pick up travels outward in the stop mode FB key The pick up travels inward in the stop mode 1 4 Canceling the Test Mode When the STOP OFF key is pressed the test mode is cancelled 2 Configuration of Test Land and Adjusting Trimming Pot VR2 TEST LAND Front Side VR2 C123 C124 C18 C11 ...

Page 7: ...g in an AC adaptor to DC in plug Connect a DC voltmeter between C124 positive and GND PLAYBACK VR2 3 0V 0 05V Fig 1 Above adjustment must be performed when you replaced IC20 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 ...

Page 8: ...R80 R200 R202 R171 C32 R113 B E C2 9 8 1 7 B E W52 16 R53 C41 C153 1 C59 C19 C156 R9 R59 R58 C49 C54 C57 R61 C1 16 C46 1 17 32 R57 R88 R19 R49 R51 14 C30 8 61 W78 W77 C53 80 R163 1 C64 L7 40 41 R100 R81 C142 C155 1 20 21 C43 W60 16 R87 G O I R86 C151 C147 E C135 R169 R203 R187 4 B 3 R170 5 1 R168 C134 C20 L9 R20 R25 B E R204 E E B B C4 C152 C148 L8 B E C31 R5 36 R1 W4 W165 R2 R3 R6 C14 C7 37 C15 C...

Page 9: ... PGND OUT1 MUTE 2K R200 C101 0 1 R198 2K C98 0 1 15K R201 C143 4 7u6 3 510K R202 16K R207 C109 47u6 3 R181 47K 2 2 R182 4 3 GND Y NC 2 A 1 5 VCC 11 Q CLK 12 GND VCC D 8 14 7 9 Q 10 13 GND 1 CLK 3 Q 6 Q 5 PR VCC D 2 4 7 14 GND 2 4 D1 CLK 9 VCC 8 16 3 10 11 7 6 14 15 CLR 1 D2 5 13 D4 D3 12 Q4 9 CLK CLR 1 VCC 8 16 GND 6 D4 Q3 15 Q4 14 12 13 D3 Q2 11 Q3 10 3 D2 5 7 Q2 Q1 Q1 D1 4 2 CL PR CL 0 1 C30 12 ...

Page 10: ...23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 23 22 20 19 18 17 16 15 21 30 29 28 27 26 25 24 31 COM8 COM1 COM2 COM3 COM4 COM5 COM6 COM7 SEG35 SEG34 SEG33 SEG32 40 39 38 37 36 35 34 33 41 44 43 42 S0 C7 C6 C5 C4 C3 C2 C1 C8 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 26 25 24 23 22 21 20 19 18 17 16 1...

Page 11: ...0 605 625 670 653 655 653 671 796 633 634 653 MODE S 7 S 6 D A S C S 8 VOLUME VR1 PHONES J 2 REMOTE J 1 S 4 S 2 S 1 S 3 S 5 A B C D E M2x8 M1 7x4 M1 7x4 φ1 7x5 N09 2866 05 N09 2878 05 N09 2893 05 N09 2894 15 N09 5329 05 1 2 3 A B Parts with exploded view numbers larger than 700 are not supplied www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q ...

Page 12: ... indicates safety critical components Ref No Add ress New Parts Parts No Description Desti nation Re marks 601 3B A02 2998 01 PLASTIC CABINET 602 3A A09 1217 03 BATTERY COVER 603 3A A10 3541 01 CHASSIS 604 1A A70 1490 05 REMOTE CONTROLLER ASSY M7T7E7 605 3A B09 0293 05 CAP K7X7 605 3A B09 0293 05 CAP 9 607 1B B10 3675 03 FRONT GLASS 608 2B B38 0245 05 LCD DISPLAY ASSY B46 0100 50 WARRANTY CARD XTE...

Page 13: ...ts No Description Desti nation Re marks C64 CK73GB1C104K CHIP C 0 10UF K C65 CK73GB1H472K CHIP C 4700PF K C69 CE32AP0G221M CHIP EL 220UF 4 0WV C70 CC73GCH1H471J CHIP C 470PF J C71 CK73FF1C105Z CHIP C 1 0UF Z C73 CK73GB1E103K CHIP C 0 010UF K C74 CK73GB1C104K CHIP C 0 10UF K C77 CK73FF1C105Z CHIP C 1 0UF Z C78 CK73GB1C104K CHIP C 0 10UF K C79 CK73GB1E223K CHIP C 0 022UF K C80 CK73GB1C104K CHIP C 0 ...

Page 14: ... 91K J 1 16W R82 83 RK73GB1J103J CHIP R 10K J 1 16W R84 RK73GB1J104J CHIP R 100K J 1 16W R86 88 RK73GB1J221J CHIP R 220 J 1 16W R89 RK73GB1J683J CHIP R 68K J 1 16W R92 RK73GB1J103J CHIP R 10K J 1 16W R94 RK73GB1J473J CHIP R 47K J 1 16W R96 97 RK73GB1J681J CHIP R 680 J 1 16W R99 RK73GB1J221J CHIP R 220 J 1 16W R100 RK73GB1J222J CHIP R 2 2K J 1 16W R101 102 RK73GB1J681J CHIP R 680 J 1 16W R107 RK73G...

Page 15: ...TC74VHC175FT MOS IC IC13 M11L1644SA 50T MEMORY IC IC13 M11L1644SA 60T MEMORY IC IC14 AN8399SA E1 ANALOGUE IC IC15 MN662782RPT1M MOS IC IC16 AN8746SA E1 ANALOGUE IC IC17 XC6368A303MR ANALOGUE IC IC18 LA4533M ANALOGUE IC IC19 S 80845ANUP MOS IC IC20 MB3800PFV ANALOGUE IC IC21 22 TC7SHU04FU MOS IC IC23 XC6365D102MR ANALOGUE IC IC24 XC62GR3012MR ANALOGUE IC IC26 NJM2125F ANALOGUE IC Q1 2SA1576A R S TR...

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