Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment Prolodgy car audio Prology MCE-525U
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MCE-525UR
Page
TECHNIC AL SPECIF ICATIONS.. .......................................1-2
MEASUR EMENT SETUP............ .......................................1-3
SERVICE AIDS, SAFE TY INSTRU CTION, ETC ..........1-4 t o 1-5
PREPAR ATIONS & CO NTROLS... .................. .........1-6 to 1-10
MAINTEN ANCE & TR OUBLESHO OTING ....... .................. 1-11
DISMANTLING INSTR UCTIONS . ..........................................2
SET BLO CK DIAGRAM ................ .................. .................. .....3
SET WIR ING DIAGRA M ............... .................. .................. .....4
KEY BOARD ............ .................. .................. .................. ..... 5
SERVO B OARD .................................................................. 6
MAIN BO ARD .......... .................. .................. .................. ..... 7
SET MEC HANICAL EXPLODED VIEW & PART S LIST ............ 8
General Components
Power supply: 12V DC(11V-16V) Mounting collar 1
Test voltage 14.4V, negative ground Machine screws M5x6 mm 4
Maximum power output: 55Wx4 channels M4x6 mm 4
Suitable speaker impedance: 4-8 ohm Mounting bolt (50 mm) 1
Suitable speaker power: 80-100 Wx4 channels Wire connector 1
Pre-Amp output voltage: 4.0V ( CD play mode: 1KHz, 0 dB, 10 K load ) Case for removable control panel 1
Fuse: 15A Trim plate 1
Dimensions(WxHxD) 178x50x166mm T-key 2
Weight: 1.64kg User manual 1
Aux-in level: 300mV Rubber cushion 1
Sub-woofer output voltage: 4.0V Remote controller(optional) 1
FM Stereo Radio
Frequency range: 87.5 - 108.0 Mhz (Europe mode)
87.5 - 107.9 Mhz (USA mode)
65.0 - 74.0 MHz ( OIRT mode )
Sensitivity: 10 dB
Frequency response: 30 Hz-15KHz
Stereo separation: 30dB(1KHz )
Image response ratio: 50dB
IF response ratio: 70dB
Signal/noise ratio 55dB
AM(MW) Radio
Frequency range: 522-1620 khz (Europe mode)
530-1710 khz (USA mode)
Sensitivity(S/N=20dB): 30 dB
Disc Player
System: Disc digital audio system
Frequency response: 20 Hz - 20KHz
Signal/noise ratio: >80 dB
Total harmonic distortion: Less than 0.20%(1 KHz)
Channel separation: >60 dB
ESP: CD12s, MP3 45s
Note: Specifications and design are subject to change without notice for product improvements.
Wiring Diagram
Aux-in
Black R ( Red )
AUDIO OUT
Antenna
L ( White )
(Green) Am plifier
Subwoofer out
Fuse 15A
Connector
R(Red)
Amplifier
Rear Line-out (Gray) L(White)
Front Line-out (Brown) R(Red) Amplifier
L(White)
ISO Connector
For some VW/Au di or Op el(Vau xhall)
Red Ignition key
+12V DC When ON/ACC car model s, you may ne ed to m odify
Black
Ground Lead
wir ing of the supplied po wer co rd as
illu strated , or els e the m emory of the
Blue Motor/Electric Antenna relay control Lead
Amplifier relay control Lead uni t may b e lost af ter you powe r off.
Yellow To car battery(+) Co ntact y our auth orized car de aler
Continuous +12V DC be fore ins talling this uni t.
Pink
Telephone Mute (active low logic level)(optional) Origin al wirin g
Purple/ Gray/ White/ Green/
Purple Black Gray Black Black White Black Green Yellow Yellow
Stripe Stripe Stripe Stripe
Red Red
Modified wir ing
Right Speaker Left Speaker Yellow Yellow
Right Speaker Left Speaker
(Rear) (Front) (Front) (Rear) Red Red
Using the ISO Connector
1.If your car is equipped with the ISO connector, then connect the ISO connectors as illustrated.
2. For connections without the ISO connectors, check the wiring in the vehicle carefully before connecting, incorrect connection may
cause serious damage to this unit.
Cut the connector, connect the colored leads of the power cord to the car battery, as shown in the colour code table below for
speaker and power cable connections
Connector Connector
Rear Right(+)---Purple
Telephone-mute/pink Rear Right(-)---Purple/Black Stripe
Front Right(+)---Gray
Battery 12V (+)/yellow Front Right(-)---Gray/Black Stripe
Auto Antenna/blue Front Left(+)---White
Front Left((-)---White/Black Stripe
ACC+/red Rear Left(+)---Green
Ground/black Rear Left(-)---Green/Black Stripe
Radio tune
To fast search within a track/
Display switch skip to next or previous track
Traffic Announcements
Mute Identification
Alternative Frequency
Radio
Disc play REG ON/OFF
(when disc inserted)
USB-driv e Radio local/distan t
(when USB inserted)
MEM-card SD/M MC c ard slot
(when SD/MMC inserted)
CDC changer
(optional)
USB con nector
Aux-in
i pod con nec tor
Power ON/OFF
Rotate the control to Panel Open
adjust volume level
Push once or more to select
VOLUME/BASS/TREBLE/
BALANCE/FADER, Rotate the
control to adjust level Remote sensor
Push for more than 2 seconds
to access MENU function
Radio preset scan
MP3 track / file /character AMS
search Radio auto preset
Rotate the co ntrol to choose front BAND SWITCH Radio preset SEARCH MP3 track / file/
pane l button illumination color. character search
Press for 0.5 seconds to listen to a preset station.
Hold for more than 2 seconds to store station. NOTE:
Certain tuner button and menu
functions e.g. TA, AF, PTY, EON,
FM1 FM2 FM3 OIRT AM1 AM2 only operate for users in areas
with RDS service reception
availability.
Disc slot: insert a disc for playback here.
Disc Eject
RESET HOLE Panel status indicator:
Note: Pressing the RESET hole will erase Lights up when you slide the panel down;
the clock setting and stored stations. Flashes when you remove the panel.
Di sc Load / Ej ect
Load : Press to flip do wn the panel. Eject : Press to flip down the panel.
In sert the di sc into the s lot . Press to eject the d isc .
Radio: To fine tune the radio, press or briefly.
To search the station automatically, press or for more than 0.5 second .
Disc Playback: Track skip: press briefly to go to the next or previous track.
Track seek: press for more than 0.5 second to seek the forward or previous track.
AMS : Auto Memory Store
Pres s brief ly to scan the preset station fo r 5 seconds each. Hold for more than 2 seco nds, the 6
stron gest available station wi ll be au tomatically saved in the memo ry of p reset buttons .
Viewing Clock Time During Radio/ Disc Playback
Press DISP (once for Radio mo de or twice f or othe r modes),di splay s hows the clo ck time after 5 seconds.
Setting The Clock Time
Press DISP , time displays. Press a gain for more than 2 seconds, time displa y blinks.
Rotate the control cloc kwise to set the ho urs or counterclo ckwise to se t the minute s,
press DISP again to ex it the clock s etting .
Press the rotary volume control for more than 2 seconds to enter the menu mode, then each press changes the mode
as follows:
TA mode MASK mode RETUNE mode DSP mode LOUD ON / OFF WOOF ON / OFF ESP mode
(CD12s, Mp345s)
COLOR mode LOCAL / DX mode STEREO / MONO mode SEEK1/2 mode BEEP ON / OFF MULT ON / OFF
(only in tuner mode) (only in FM mode) (only in tuner mode)
TA mode: Rotate the rotary co ntrol t o choo se TA ALARM or TA SEEK . If th e TA (t raffic Announceme nts) function is turned on
a nd the re is n o traffi c iden tificati on code received in the s pecifie d time then no TA/TP will be display.
TA AL ARM m ode : Alarm is turn ed on . TA SEEK mode: TA SEEK is automatically activated.
MA SK mo de: R otate t he con trol to choos e MAS K DPI or MA SK AL L mod e.
In s ome c ases, the AF functi on ma y be in fluenc ed by some i nterfe rence, exam ples
are signa ls with strong field but without t he RDS data . For th is rea son, th e unit has
two optio ns to a void th e abo ve inte rferen ce.
MA SK DP I mod e : Only AF w hich h as diff erent progra m iden tificat ion is m aske d.
MA SK AL L mod e : The AF wh ich ha s diffe rent p rogram identification and NO R DS
sig nal wit h high field s trengt h is ma sked.
RETUNE mode: Rotate the control to choose RETUNE-S or RETUNE-L.
RETUNE-S or RETUNE-L is time length selection of the TA SEEK retune interval.
RETUNE-S: short, TA SEEK retune interval is 45 seconds.
RETUNE-L: long, TA SEEK retune interval is 180 seconds.
Remark: RETUNE mode functions for TA during TA SEEK mode only.
DN DSP mode: Rotate the control to choose DSP sound effect: POP ROCK CLASSIC FLAT DSP OFF
V OL LOUD mode: Rotate the control to choose loudness on or off.
UP WOOF ON / OFF: Rotate the control to choose Sub-woofer on or off.
ESP12:Selected as CD-ESP time 12 seconds.
ESP: 12/45s
ESP45:Selected as MP3-ESP time 45 seconds.
MULT ON / OFF: Multi Session ON/OFF.(Multi session OFF: mixed cd, ONE session CD; Multi session ON: Mixed, Extra, multi session CD)
BEEP ON/OFF mode: Rotate the control to choose button beep sound on or off.
SEEK 1/2 mode: Rotate the control to choose radio seek mode 1 or 2 .
SEEK 1: searching station will stop when next station is received.
SEEK 2: searching station will stop when or button is released and next station is received.
STEREO/MONO mode: Rotate the control to choose FM stereo or mono.
LOCAL/DX mode: Rotate the control to choose tuner sensitivity local or distant.
COLOR mode: Rotate the control to choose front panel button illumination color.
COLOR 1: Button illumination color is RED.
COLOR 2: Button illumination color is GREEN.
While playing MP 3 disc/USB/SD/MMC-M P3 M USIC, the folder/file name and ID3 TAG ( Song title, Album
and Artist) can scroll entirely across the LCD. (Press the BAND button to show ID3 information)
Elapsed playing time & Track number Folder name & number File name & number Song title Album title Artist name
MP3 Track search
Press AMS to select "TRACK SCH" mode.
Press the control and LCD display will show "001".
If the desired track number is less than 100,
Rotate the control to select the first digit and press the control once again
And rotate the control to set the tenth digit of the track number.
Press the control again more than 0.5 second to play the track.
If the desired track number is more than 100,
* If the track number you enter is
Rotate the control to select the first digit and press the control to confirm, beyond the maximum file number,
Rotate the control to select the tenth digit and press the control to confirm, the last song will be played.
Rotate the control to select the hundredth digit and press the control to confirm,
Press the control again to play the track.
MP3 File search
If you just want to play songs from this folder, press the knob
Press AMS twice to for more than 0.5 second to play the first track of the folder.
select "FILE SCH" mode. If you want to play a desired track in the folder, press the knob
Press the control to enter, and rotate to select the track you want.
Press the knob again to play the track.
Rotate the control to select folder.
Press AMS button three times to select "CHAR SCH" mode.
Press the control and "A" displayed.
If you press the control more than 0.5 second. A track beginning with the letter " A" will be played.
If you want to select a track name beginning with a different letter. Rotate the control to select a letter, then
press the control to confirm.
Then "A" flashes at the next place, select 2nd and other character of the desired track name as steps above.
Press the control more than 0.5 second to play your desired track.
Example: To search character "ECHO".
REMOTE CONTROLS
Power On : Press any button on the remote control to turn on the unit.
Radio
Radio Tune Disc play
(whendisc inserted)
To fast search within USB-drive
Volum e a track/ skip to next (when USB inserted)
Power on/off or previous track
MEM-card
(when SD/MMC inserted)
Mute
CDC changer (optional)
Aux-in
Press to select VOLUME/BASS/ Radio Preset scan
TRE BLE/BALANCE/FADER ,
use Volume button to adjust level AMS
MUTE SRC
Radio Auto Preset
VOL
Press for more than 2 seconds
to access MENU function MP3 track / file/character
SEL AMS SEARCH search
MENU SEARCH
MP3 track /file/character
Traffic
search Announcem ents TA AF/REG PTY BAND Band switch FM1
Identifica tion
Press briefly for Play / Pause function
Press for more than 2 seconds if you Disc Playback 1 2 3 4
FM2
want to start playback from the beginning
of the first track of your disc. /T OP INT RPT RDM
FM3
Intro play(10sec) Radio Preset 5 6 DISP Display switch
1 6
OIRT
Track Repeat P lay
Program Type
Track Random Play AM1
Press to listen to
a preset station,
MP3 track -10 down Hold for more Alternative Frequency AM2
than 2 seconds
MP3 track +10 up
to store a station. REG ON/OFF
Replacing the lithium battery of remote control unit.
* When the op eratio n rang e of th e card remot e WARNINGS:
control becomes s hort o r no Properly, repla ce
the lit hium b attery with a new o ne. M ake sure
S tore t he bat tery in place where children cannot re ach.
the battery polarit y repla cement is co rrect.
I f a chi ld acci dentally swa llows the ba ttery,
c onsul t a doc tor im mediately.
1. Pull out th e batte ry hol der wh ile pre ssing the sto pper. D o not recha rge, sh ort, disasse mble o r heat the battery
o r disp ose it in a fir e.
D oing any of these things may c ause the battery to give
o ff hea t, crac k or st art a fire.
D o not leave the ba ttery w ith other me tallic m ateri als.
D oing this ma y cau se the batter y to gi ve off heat, c rack
o r start a fire.
W hen throwing awa y or saving the battery, wrap it in tape
a nd ins ulate; other wise, t he bat tery m ay sta rt to give off
2. Inse rt the button -type lithium batte ry with the (+ ) heat, c rack o r start a fire.
mar k facin g upw ard. In sert th e batt ery ho lder in to the D o not poke t he battery with twe ezers or similar to ols.
rem ote co ntrol.
D oing this ma y cau se the batter y to give off heat, c rack
o r start a fire.
(CR 2025)
1-12
General Radio
Car engine switched off.
Turn on the car ignition. Interference noise Station is too far, or signals are too weak.
Cable is not correctly connected. during broadcast Select other stations of higher signal level.
No power or Check connection.
Fuse is burnt. Replace fuse.
no sound Battery cable is not correctly connected.
Check volume or mute on / off. Preset station
Connect the battery cable to the live
If the above solutions cannot help, lost terminal .
press the RESET hole.
Disc Error Display Messages
Disc is upside down. Disc is not CD or contains no MP3 files.
Disc is inserted but Place disc right way up, with the label
side up. Disc upside down.
no sound. Disc is dirty or damaged
Clean disc or change disc.
Recovery error, check the disc.
Disc sound skips, Disc is dirty or damaged. MP3 error, check the disc.
tone quality is low. Clean CD or change another CD.
USB/SD/MMC MP3 DATA error.
o
Mounting angle is over 30 . Disc mechanism error
Press to eject the disc.
Sound skips due Adjust mounting angle to less than 30o. In case that the disc cannot be
ejected by pressing ,
to vibration. Unstable mounting. press the RESET switch and press
the again.
Mount the unit securely with the If you are still unable to eject consult
mounting parts. your dealer.
2-1 2-1
DISMANTLING INSTRUCTIONS
1 Pull out the short sheet from main set. 2 Remove top and bottom covers. 4 Remove CD loader
Remove 2 pcs
screw on the
top of loader.
Loosen 8 screws to
remove heatsink &
top cover & bottom
cover.
Remove 6 pcs
screw on the
main board.
3 Loosen 4 pcs screw to remove Front Cabinet.
Remove the 2 pcs
screw to dismantle
the frame.
Remove the screw
Remove 2 pcs screw on the left side of
from front cabinet. the cabinet.
Pull out FPC
Remove the screw wire.
on the right side of
the cabinet.
Remove the 2 pcs Remove the two
screw to dismantle connectors from
the frame. the mainboard.
2 -2 2-2
DISMANTLING INSTRUCTIONS
Service Position A Service Position C
Service Position B Service Position D
3 3
SET BLOCK DIAGRAM
4 4
WIRING DIAGRAM
5-1 5-1
LCD PIN CONNECTION
KEY BOARD
TABLE OF CONTENTS
LCD Display..........................................................5-1 PIN SEGMENT DISPLAY
Front Board...........................................................5-2
Connecto r Board....................................................5-2
Key Board Circuit Diagram......................................5-3
Key Board Layout Diagram.....................................5-4
USB Board ............................................................5-5
Elect rical Parts Li st................................................5-6
5-2 5-2
FRONT BOARD - CIRCUIT DIAGRAM CONNECTOR BOARD - CIRCUIT DIAGRAM
FRONT BOARD - LAYOUT DIAGRAM CONNECTOR BOARD - LAYOUT DIAGRAM
5-3 5-3
KEY BOARD - CIRCUIT DIAGRAM
5-4 5-4
KEY BOARD - LAYOUT DIAGRAM
TOP VIEW
KEY BOARD - LAYOUT DIAGRAM
BOTTOM VIEW
5-5 5-5
USB BOARD - CIRCUIT DIAGRAM
USB BOARD - LAYOUT DIAGRAM
5-6 5-6
ELECTRICAL PARTS LIST - KEY BOARD
Part N O. D escri ption Q TY Lo cation Part NO. Description Q TY Lo cation
83823 CMU7 06FC000 C MU70 6 FC MI Ass m 1 1 23805 000016 14PIN,2 .0mm,SOCK ET M ALE ESTF2-14-01 1 CO N301
13300 00100 17 P CB,F B,CMU 501,F R-2,3 8◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo