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8 CN1 (2P)

6 nine screws
 

4

5

9

1

2

3 two screws
 

7 REGULATOR,

5 top lid

6 CD mechanism deck block

3 top panel

2

4 two screws

4 two screws

1 four screws

1 Remove the four solders.

2 wire (flat type) (16 core)

4 BD76 board

3 optical pick-up

1 two floating screws
 (+PTPWH 

6 CD MECHANISM DECK

4 two coil springs (insulator)

5 two insulators

2 two screws
 

3 two stoppers (BU)

5 two insulators

4 two coil springs (insulator)

 

•  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] button and [TUNER/BAND] button simultane-

ously 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 0”  is shown for MHC-GPX3.

 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, UI, PF, 
SYS, CD, MM, ST, TA, 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. How-
ever, 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] button and [BASS BAZUCA] button simulta-

neously 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 [ROCK] button repeatedly until a message “GEQ 

MAX” appears on the fl uorescent indicator tube. GEQ 
increases to its maximum.

 

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

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

 

3. Press [ROCK] 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 simultaneously 

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 [EQ] 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 let you lock the disc tray. When this mode is 

activated, the disc tray will not open when [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 simultaneously and 

 

 

hold down until “LOCKED” or “UNLOCKED” displayed 

  on 

the 

fl uorescent indicator tube (around 5 seconds).

 

•  This mode is use to load all the factory use preset frequencies 

into FM 1-FM 20 and AM 1-AM 10. Originally, frequency 
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] 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 point-

er 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 disc on all tray.

 4. 

Press 

[

+

 / 

] button and [

x

] button simultaneously 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

 

 

 

 

Surround 

Setting

S

U R R

     

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 overcurrent 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.

1-1.  If PROTECT mode is “AMPLIFIER”,
 

 

The following defect might be possible.

Defects

Possible cause

OTP  (Over Tempera-

ture Protection)

Unusual heat up of MOSFET by im-
proper assembly of heatsink, destruction 
of MOSFET etc..

DC Detection

DC appears in SP terminal by defect of 
AMP IC and MOSFET or output is short-
circuit.

Unusual output of 

Power mount

The power mount has unusual output.

 

 

The following defect might be possible.

Defects

Possible cause

Under Voltage

IC1402 output is below 12V.

RESET defect

Reset signal status from micom is not ‘H’ .

2-1.  If the PROTECT mode is “POWER SUPPLY”,
 

There is possibility of unusual power supply of any of the 

 

AMP IC or Pre-amplifi er.

 

 

•  To release from this mode.

  

 Press 

[

u

] button and [

x

] button simultaneously again 

 

or unplug and re-plug in the power cord.