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CONTENTS

Page
Disassembly Instructions ........................................................................................................................................ 3
Disassembly Diagram............................................................................................................................................. 4
Operation Check..................................................................................................................................................... 5
Block Diagram ........................................................................................................................................................ 6
Alignment Locations ............................................................................................................................................... 7
Alignment Procedures ............................................................................................................................................ 8
Printed Circuit Boards........................................................................................................................................... 10
Exploded Views (Panel)........................................................................................................................................ 20
Exploded View Parts Lists (Panel)........................................................................................................................ 21
Exploded Views (Cabinet) .................................................................................................................................... 22
Exploded View Parts Lists (Cabinet) .................................................................................................................... 23
Schematic Diagram .............................................................................................................................................. 25
Electrical Parts List ............................................................................................................................................... 30
Specifications........................................................................................................................................................ 37




2
DISASSEMBLY INSTRUCTIONS

1. Using the unlock key that came with the unit or a similar tool, unlock the Mounting Box and remove toward the
rear of the unit.


2. Remove two screws (A) located on the rear of the top cabinet then remove the Top Cabinet.


3. Remove two screw (B) located on the rear of the bottom cabinet then remove the Bottom Cabinet.


4. Remove the screw (C) and (D) from on the left side of the U bracket.
Remove the screw (E) and (F) from on the right side of the U bracket.


5. Take out the Panel and remove the Ring.


6. Remove the screw (G) from on the front side of the base and remove two screws (H) from under the front
deck bracket then remove the Front Deck Bracket.
Remove two screws (I) from under the rear deck bracket then remove the Rear Deck Bracket.


7. Remove two screws (J) from on the Heat Sink then remove the Spring Sheet.


8. Remove five screws (K) from on the Heat Sink then remove the Heat Sink.


9. Remove two screws (L) from each side of the base then remove the Base.


10. Remove two screws (M) from on the back of the U bracket then remove the DC FAN 12V.
Remove two screws (N) from on the back of the U bracket then remove the Wire Clip.


11. Remove three screws (O) from under the main board then remove the Main Board.




3
DISASSEMBLY DIAGRAM




4
OPERATION CHECK

GENERAL SPECIFICATIONS OF SIGNAL

Standard frequency FM 98.1 MHz (87.5, 108 MHz)
MW 1000 kHz (522, 1620 kHz)
LW 200 kHz (144, 288 kHz)
Signal output FM 1 mV
MW 5 mV
LW 5 mV
Modulation MW 400 Hz 30% MOD.
FM Stereo 1 kHz 75 kHz DEV.
90% for L only or
R only pilot level 10%
AF output level FM/MW/LW
Power source voltage DC 14.0V (Backup voltage is the same as this)
AF load impedance 4 ohm pure resistance
Balance Center position of level
Tone Center position
The signal strength read in this section is voltage on the antenna.
Test Diagram
ACC (DV14.4V)
2-SPEAKER 4-SPEAKER 4-SPEAKER 2-SPEAKER
RR.
RL. SPK.
SPR. BACK UP (14.4V)
FRONT FRONT
SPK. SPK.
FL. FR.
SPK. SPE. GROUND



POWER ANTANNA




MAIN UNIT


ANT




MPX
DUMMY STEREOS
DISTORTION ANTANNA MODULATOR
METER VTVM VTVM




AM SG FM SG




5
BLOCK DIAGRAM (RADIO SECTION)




6
BLOCK DIAGRAM (DVD SECTION)




7
ALIGNMENT LOCATIONS



MITSUMI TUNER




8
ALIGNMENT PROCEDURES

FM ADJUSTMENT

Equipment Required


AM IF/RF signal generator
Solid-state voltmeter (SSVM)
Regulated DC power supply
2-CH voltmeter
Distortion meter


FM Alignment Using FM Signal Generator


Note: Press the radio power switch to on the radio. Signal generator output must be kept as low as possible
to avoid overload and clipping.


Step Generator Generator Display Adjustment Remarks
Coupling Setting
Stereo Signal 98.1 MHz Adjust AF
Separation Generator Int. 1 kHz 98.1 MHz VR1 output power
to antenna Dev. 75 kHz at maximum
receptacle L+R = 90 % separating
pilot = 10 % more than 30 dB
FM SNC 98.1 MHz
Adjustment Dev. 75 kHz 98.1 MHz 98.1 MHz VR2 Stereo Separation
L+R=90 % @ 40 dB