E - 4
ELECTRICAL CONNECTION
a. Make sure your car battery is a 12 volt (6 filler caps) negative ground system (if not, a
converter will be necessary).
b.
Before starting wiring connections, disconnect the power supply by removing the fuse from
the fuse box.
c. Connect the power wire to one of the extra terminals of the fuse box.
contact.
d.
Connect the black ground wire to a metal part of the car. It is important to make good
e. Make other wiring connections as shown.
f. If your car does not have ISO connector, you can procure it from any car accessory shop.
Press this button to remove the control panel.
Press this button to turn on or off the power.
BASIC OPERATIONS
PANEL RELEASE BUTTON
POWER BUTTON
Notes: INCORRECT WIRING OR OPERATION WILL AVOID THE WARRANTY OF THIS UNIT.
Fuse Replacement:
To replace the fuse, pull out the blown fuse
from the socket. Insert a new one with same
rating.
FUSE
(CAR UNIT BACK SIDE)
DISPLAY BUTTON
FRONT CABINET
RIGHT TRACK
GROUND
AUX IN
LEFT TRACK
Note: If press RESET button, the unit still cannot function normally, please use a cotton
swab soaked in isopropyl alcohol to clean the socket on the back of the control panel.
The RESET button is located on the main unit (as shown on the diagram). To press it vertically
with a ballpoint pen or metal object will activate it. The reset button is to be activated for the
following reasons:
RESET BUTTON
Initial installation of the unit when all wiring is completed.
All the function buttons do not operate.
Error symbol on the display.
A) Tuner mode (Radio)
B) CDP/MP3 (only if a CD or Mp3 disc is inserted)
C) USB (only if a USB drive is inserted)
D) SD/MMC (only if a SD or MMC card is inserted)
E) AUX mode (only if this unit is equipped with this feature)
Whenever a USB or SD/MMC is being inserted, unit will automatically switch to USB or
SD/MMC mode, does not matter the unit is currently in what mode.
When in USB or SD/MMC mode, if the USB or SD/MMC is being removed, unit will
automatically switch to previous mode.
MODE BUTTON
Press this button to select different mode, sequence as follow:
MODE PRIORITY
FRONT AUX INPUT
Connect the external signal to the front 3.5mm earphone jack on front panel, then press Mode
button to select Aux mode. Press Mode Button again to cancel Aux Mode and return to
previous mode.
Press this button briefly, the LCD will display the clock for about 2 seconds, then return to
previous display mode.
Clock Adjustment
Under clock display mode, press DISP button until the LCD flashes, press Tuning Up Button to
adjust hour and Tuning Down Button to adjust minute.
Summary of Contents for 638UA
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