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3 wire (flat type) (5 core)

4 two screws

5 motor assy, table (M741)

6 remove the two solderings of motor

7 MOTOR (TB) board

1 gear (stopper)

1 gear (stopper)

2

1 floating screw

4 floating screw

8 one screw

6 floating screw

7 gear (geneva)

2 tray

3 belt (table)

9 CN731

0 SENSOR board

5 pulley (table)

1 belt (loading)

2 remove the two solderings of motor

4 motor assy, loading (M751)

5 MOTOR (LD) board

3 two screws

 

•  This mode is used to check the fl uorescent indicator tube, 

LEDs, keys, [MASTER VOLUME] jog, model, destina-
tion and software version.

 • 

Procedure:

 

1. Press [CD/DISC SKIP] button and [TUNER/BAND] 

button simultaneously and hold 3 seconds.

 

2.  All LEDs and segments in fl uorescent indicator tube are 

lighted up. 

 

3. When you want to enter to the software version display 

mode, press [

+

 / 

] button. The model information 

appears on the fl uorescent indicator tube. 

 

  • “GPX 3S”  is shown for MHC-GPX5.

 

  • “GPX 4” is shown for MHC-GPX7.

 

  • “GPX 7S” is shown for MHC-GPX8.

 Press 

[

+

 / 

] button again to view the destination 

 information.

 

4. During the destination information display, press [

+

 

/ 

] button. Each time [

+

 / 

] button is pressed, the 

fl uorescent indicator tube shows the version of each category 
software in the following sequence: SC, MTK (DMB Board 
fi rmware version), UI, PF, SYS, CD, CDMA, CDMB, 
ST, TA, TAS, TM and return back to model information 
display.

 

5.  

When [OPTION] button is pressed while the version 

numbers are being displayed except model and destination, 
the date of the software creation appears. When [OPTION] 
button is pressed again, the display returns to the software 
version display. 

 6. 

Press 

[

+

 / ↓] button, the key check mode is activated.

 

7.  In the key check mode, the fl uorescent indicator tube 

displays “K 0    V0”.

 

 

Each time a button is pressed, “K” value increases. 

 

  However, once a button has been pressed, it is no longer 

taken into account. 

 

 

“V” value increases in the manner of 0,1, 2, 3 ... if [MAS-
TER VOLUME] knob is turned clockwise, or it decreases 
in the manner of 0, 9, 8,7  ... if [MASTER VOLUME] knob 
is turned counterclockwise.

 

8. When [ENTER] button is pressed after all LEDs and 

segments in fl uorescent indicator tube light up, alternate 
segments in fl uorescent indicator tube and LEDs would 
light up. If you press [ENTER] button again, another half 
of alternate segments in fl uorescent indicator tube and 
LEDs would light up.  Pressing [ENTER] button again 
would cause all segments in fl uorescent indicator tube and 
LEDs light up.

 

9.  To release from this mode, press three buttons in the same 

manner as step 1, or disconnect the power cord.

 

•  This mode is used to check operations of the Amplifi er 

section.

 • 

Procedure:

 

•  To enter Common Test Mode

 

1.  Press [USB/USB SELECT] button and [BASS BAZUCA] 

button simultaneously and hold for 3 seconds.

 

2.  The function is changed to TV and the volume is changed 

to VOLUME MIN.

 • 

Check 

of 

Amplifi er

 

1.  Press [MUSIC] button repeatedly until a message “GEQ 

MAX” appears on the fl uorescent indicator tube. GEQ in-
creases to its maximum.

 

2.  Press [MUSIC] button repeatedly until a message “GEQ 

MIN” appears on the fl uorescent indicator tube. GEQ 
decreases to its minimum.

 

3.  Press [MUSIC] button repeatedly until a message “GEQ 

FLAT” appears on the fl uorescent indicator tube. GEQ is 
set to fl at.

 

4.  When the [MASTER VOLUME] knob is turned clockwise 

even slightly, the sound volume increases to its maximum 
and a message “VOLUME MAX” appears on the fl uores-
cent indicator tube.

 

5.  When the [MASTER VOLUME] knob is turned counter-

clockwise even slightly, the sound volume decreases to its 
minimum and a message “VOLUME MIN” appears on the 
fl uorescent indicator tube.

 

•  To release from Common Test mode

 

1.  To release from this mode, press [

I/1 STANDBY

] button.

 

2.  The cold reset is enforced at the same time.

 

•  The user reset clears all data including preset data stored 

in the data fl ash to initial conditions exclude history mode 
data

 • 

Procedure:

 1. 

Press 

[

I/1 STANDBY

] button to turn on the system.

 2. 

Press [

x

] button and [

I/1 STANDBY

] button simultane 

  ously for 3 seconds.

 

3.“RESET” appears on the fl uorescent indicator tube. 
 After 

that, 

the 

fl uorescent indicator tube becomes blank 

  for a while, and the system is reset.

 

•  The cold reset clears all data including preset data stored in 

the data fl ash to initial conditions. Execute this mode when 
returning the set to the customer.

 • 

Procedure:

  

1. 

Press 

[

I/1 STANDBY

] button to turn on the system.

 

  2. 

Press [ENTER] button and [GAME] button 

 

   

simultaneously for 3 seconds.

 

  3. 

“COLD RESET” appears on the fl uorescent 

 

   

indicator tube. After that, the fl uorescent indicator  

   

tube becomes blank for a while, and the system is  

  

reset.

 

•  The step interval of AM channels can be toggled between 

9 kHz and 10 kHz. This mode is not available for Saudi 
Arabian, European and Russian models.

 • 

Procedure:

  

1. 

Press 

[

I/1 STANDBY

] button to turn on the system.

 

  2. 

Press [TUNER/BAND] button repeatedly to select 

  

 

the 

“AM”.

  

3. 

Press 

[

I/1 STANDBY

] button to turn off the system.

 

  4. 

Press [LED EFFECT] button and [

I/1 STANDBY

] 

 

   

button simultaneously. The system turns on 

 

   

automatically. The message “AM  9K STEP” 

 

   

or “AM   10K STEP” appears on the fl uorescent 

 

   

indicator tube and thus the channel step is changed.

 

•  This mode moves the optical pick-up to the position 

durable to vibration and clears all data including preset 
data stored in the EEPROM to initial conditions during the 
next AC-In. Use this mode when returning the set to the 
customer after repair.

 • 

Procedure:

  

1. 

Press 

[

I/1 STANDBY

] button to turn on the system.

 

  2. 

Select CD function.

 

 3.  Press [ENTER] button and [MUSIC] button 

simultaneously for 3 seconds. The system turns off 
automatically.  

  

4. 

A 

message 

 

   

“MECHA LOCK” is displayed on the fl uorescent 
indicator tube and the CD ship mode is set.

       

 

•  This mode moves the optical pick-up to the position du-

rable to vibration. Use this mode when returning the set to 
the customer after repair.

 • 

Procedure:

  

1. 

Press 

[

I/1 STANDBY

] button to turn on the system.

 

  2. 

Select CD function.

 

  3. 

Press [BASS BAZUCA] button and [

I/1 STANDBY

] 

button simultaneously. The system turns off 

  

 

automatically.

  

4. 

A 

message

 

   

“MECHA LOCK” is displayed on the fl uorescent 
indicator tube and the CD ship mode is set.

 

•  This mode let you lock the disc tray. When this mode is ac-

tivated, the disc tray will not open when [

Z

 OPEN/CLOSE] 

button or [EX-CHANGE] button is pressed. The message 
“LOCKED” will be displayed on the fl uorescent indicator 
tube. This mode only applied when there is disc(s) on the 
tray.

 • 

Procedure:

  

1. 

Press 

[

I/1 STANDBY

] button to turn on the system.

 

  2. 

Select CD function.

  

3. 

Press 

[

x

] button and [ENTER] button simultane-

ously and hold down until “LOCKED” or “UN-
LOCKED” displayed on the fl uorescent  indicator 
tube (around 5 seconds).

 

•  This mode is use to load all the factory use preset frequen-

cies into FM 1-FM 20 and AM 1-AM 10. Originally, fre-
quency of FM 1-FM 20 and AM 1-AM10 are set to the 
minimum frequency.

 • 

Procedure:

  

1. 

Press 

[

I/1 STANDBY

] button to turn on the system.

 

  2.  Press [CD/DISC SKIP] button and [AUDIO IN] 

button simultaneously and hold for 3 seconds, 
message “FACTORY” appears on the fl uorescent 
indicator tube. The function is changed to TUNER 
automatically.

 

•  This mode is used to display the total count of meter 

pointer touch initial switch and max switch.

 • 

Procedure:

  

1. 

Press 

[

I/1 STANDBY

] button to turn on the system.

 

  2. 

Select CD function and All DISC play mode.

 

  3. 

Put discs on all trays and close the tray.

  

4. 

Press 

[

+

 / 

] button and [

x

] button simultane-

ously for 3 seconds.

 5. 

The 

fl uorescent indicator tube displays Aging 

Display “AG xxxx/yyyy”. 

 

   

“xxxx” represents the error counter

 

   

(Maximum Value of “xxxx” = 9999)

 

   

“yyyyy” represents the cycle counter

 

   

(Maximum Value of “yyyy” = 9999)

 

6. 

Press [<<] or [>>] to search for Aging History 
Error Display.

  

 

The 

fl uorescent indicator tube displays 

  

 

“Mx 

E1E2E3E4”. 

 

   

x: error history number

 

   

E1: Loading sequence JCP high

 

   

E2: Loading sequence JCP low

 

   

E3: Loading operation JCP

 

   

E4: Cam position operation JCP

 

7. 

Press [ENTER] to Aging Display

 

•  To release from Meter Aging Mode.

 

 

To release from this mode, press [

I/1 STANDBY

] button or 

perform COLD RESET operation.

 

•  This mode is used to check important data stored in the 

system when PROTECTOR happen.

 • 

Procedure:

 

  1. 

During demo mode, press [

u

] button and [BASS 

BAZUCA] for 5 seconds to mode in to history 
mode.

 

  2.  Press the [TUNING +] or [TUNING -] button to 

check history data stored

Item

Display

Protector Count

P

R

O

C

O

U

N

T

 

 

Protector Type

P

R

O

T

Y

P

E

 

Single Power On Time T

1

 

H

M

Total Power On Time T

2

 

H

M

Input Function

F

U

N

C

 

Volume

V

O

L

      

Actual 

Attenuation

A

T

T

      

Low EQ Level

E

Q

 

L

O

W

 

 

 

Mid EQ Level

E

Q

 

M

I

D

 

 

 

High EQ Level

E

Q

 

H

I

G

H

 

 

VACS 

Level

V

A

C

S

      

AP  VACS Level

A

P

V

A

C

S

 

 

 

 

Subwoofer 

Setting

S

W

       

Surround 

Setting

S

U

R

R

     

DJ Effect Setting

D

J

 

 

Bass Bazuca Setting

B

A

Z

U

C

A

 

 

 

 

•  To release from History Mode.

 

 

To release from this mode, press [

I/1 STANDBY

] button. 

 

•  This mode is used to check types of protect occurred during 

protector on.

 • 

Procedure:

 

  3.  During protection on, fl uorescent indicator tube 

shows blinking message “PROTECT  EXX”.

 

   

“EXX” – represent the error code.

  

4. 

Press 

[

u

] button & [

x

] button simultaneously.

 

 5.  Fluorescent indicator tube display will toggle 

between “PROTECT” message & protector kind 
message display.

 

   

Bellow table explains on protector kind.

Error Code

Protector Message Description

E01

"AMP OCP"

The over current condition to MOS-
FET occurs by defect of MOSFET or 
defect of PS output line.

E02

"MTK POWER"

No power supply to DMB mount

E03

"POWER SUPPLY" Defect of power supply circuit to AMP

E04

"AMPLIFIER"

Defect of AMP circuit

E06

"FAN BLOCK"

 Defect of DC FAN and DC FAN
driver circuit

 

•  To release from this mode.

  

Press 

[

u

] button & [

x

] button simultaneously again or 

unplug & re-plug in the power cord.