Mystery MMD-3007 User manual

MMD-3007
CAR DVD/MP4 PLAYER

CONTENTS
01
18
19
27
30
33

02
SPECIFICATION

DISASSEMBLY INSTRUCTIONS
1.Mounting Box: Slide out the mounting box in parallel.
2.Top cover: Release screw at the back of top cover, and pull
out the cover.
3.Bottom Cover: Turn over the unit to release the screws at the back
of bottom cover and one the top surface. Pull out the cover.
4.Disassemble the Panel:
Pull out the Front panel.
Release the left side and right side screws attached to with the base.
Pull the base out of the unit.
5.Disassemble the mechanism deck:
There are two screws to lock the mechanism deck at front ,Unscrew
both of them.
Remove the solder from fixed wires on the main, and remove the deck.
6.Disassemble the key board :
Release four screws .
Remove the back panel .
Then remove the key board.
7.Unscrew the left side bracket and the right side bracket. There are
two screw on each side.
8.Disassemble the main board :
9.Unscrew two screw at the leef bracket
remove the solder from the Tuner,and main board.
Uncrew two screw ar the ANT.Remove the solder from fixed wires.
Unscrew two crew at the Heatsink.
Remove the main board.
03

04
OPERATION CHECK
GENERAL SPECIFICATIONS OF SIGNAL
Standard frequency AM 1000 KHz (600, 1400 KHz)
FM 98.0 MHz (90.0, 106.0 MHz)
Signal output AM 74 dB/uV
FM 60 dB/uV
Modulation AM 1 kHz 30%
FM mono 1 KHz 22.5KHz
AF output level AM/FM
Power source voltage DC 14.4 V (backup voltage is the same as this )
AF load impedance 4 ohm pure resistance
Balance Mechanical center
Tone Mechanical center
The signal strength read in this section is voltage on the antenna.
Note : Use an RF generator for the AM band and a sweep
generator for the FM band.

05
DECK
DECK

Equipment Required
FM IF/RF signal generator
Oscilloscope
Solid-state voltmeter (SSVM)
Frequency counter
Regulated DC power supply
DC digital voltmeter
Distortion meter
FM IF/RF ADJUSTMENT
FM IF and RF Alignment Using FM Signal Generator
Note : Press the radio power switch to turn on the radio. Signal
generator
output must be kept as low as possible to avoid overload
Setup Generator
Coupling
Generator Display
Setting
Indicator
Coupling
Adjust ment Remarks
IF FM RF
signal
generator
to ANT i/p
10.7 MHz
sweep
output
60 dB/uV
98.0
Mhz
Connect
oscillosc
ope
pin 3 &
ground
to Ic1
-
T1 Adjust so
that
maximum
AF output
power and
minimum
distortion.
RF
Low
High
Signal
generator
to
antenna
receptacle
90MHz Int 1
KHz 22.5KHz
mod. output
30dB/uV
106MHz Int
1 KHz 22.5
KHz mod.
output 30
dB/uV
90 MHz
106 MHz
SSVM
across
speaker
C3
L1
Adjust AF
output
power
for
maximum
06
ADJUSTMENT
and clipping.

07
ADJUSTMENT
Equipment Required
>AM/RF signal generator
>Oscilloscope
>Solid-state voltmeter (SSVM)
>Frequency counter
>Regulated DC power supply
>DC digital voltmeter
>Distortion meter
AM /RF ADJUSTMENT
AM/RF and RF Alignment Using AM Signal Generator
Note : Press the radio power switch to turn on the radio. Signal generator
output must be kept as low as possible to avoid overload and clipping.
Setup Generator
Coupling
Generator Display
Setting
Indicator
Coupling
Adjust ment Remarks
RF Signal
generator
to antenna
receptacle
600 KHz
Int 1 KHz
30% mod.
Output
74 dB/uV
600
Khz
SSVM
across
speaker
C1 Adjust
AF output
power for
maximum
RF
Cont.
Signal
generator
to
antenna
receptacle
1400 KHz
Int 1 KHz
30% mod.
74 dB/uV
1400
Mhz
SSVM
across
speaker
L3 Adjust AF
output
power
maximum

No Power
No Sound
Sound Skipping
The Operation Keys
Do Not Work
The Radio or
Automatic Selection
Does Not Work
The fuse is blown
Inserting the CD in reverse
direction
The CD is extremely dirty or
defected
Temperature inside the car is
too high
Condensation
Volume is at minimum
Wiring is not properly
connected
The installation angle is more
o
than 30
CD is extremely dirty or
Defected
The built-in microcomputer is
not operating properly due to
Interference
The antenna cable is not
connected correctly
The signals are too weak
Replace a new fuse
Remove the CD from the player
and insert the new one
Insert the CD with the label
facing up
Clean the CD or try to play
a new one
Cool off until the ambient
temperature return to normal
Leave the player off for an
hour or so and try again
Adjust volume to desired level
Check wiring connection
Adjust the installation angle to
o
less than 30
Clean the CD or try to play
a new one
Press the RESET button or
reinstall the front panel
properly
Connect the antenna cable
correctly
Select the station manually
A CD is already inside the
player slot
CD Cannot Be
Loaded or Ejected
The car ignition key not
been switched on
If the power supply is properly
connected to the car accessory
terminal, switch the ignition
key to ACC
Symptom Causes Solution
Before going through the check list, check wiring connection.
consult your nearest service dealer
08
TROUBLE SHOOTING
If any of the problems persist after checklist has been made,

09
PRINTED CIRCUIT BOARDS
MAIN BOARD ( LAYOUT )

10
PRINTED CIRCUIT BOARDS

11
PRINTED CIRCUIT BOARDS

12
PRINTED CIRCUIT BOARDS
ey-opp -Bottom
KCer
ey- ilkscreen-tom
KSbot

13
PRINTED CIRCUIT BOARDS
ey-opp-T
KCerop
ey-lkscren-
KSi eTop

14
PRINTED CIRCUIT BOARDS
SERVO BOARD

15
PRINTED CIRCUIT BOARDS
SERVO BOARD

16
PRINTED CIRCUIT BOARDS
SERVO BOARD

17
PRINTED CIRCUIT BOARDS
SERVO BOARD

WIRING DIAGRAM
18

19
06-109288-2001-0A-N 一体化(L型）PY-9288T-MB(4*25/47002IC+无同轴+2组视频
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10-090435-0201 插件三极管 2SD435 TO-251 40V，3A，10W( 塑封) pcs 1.00000
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12-114001-0000 普通二极管 IN4001 pcs 2.00000
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