Philips MCM390, Service Manual

5 - 1

5 - 1

SERVICE TEST PROGRAM

STOP

 button pressed in any step returns

to begin of Service Testprogram.

PLAY

 button

pressed?

STOP

 button

pressed?

N

N

Y

Y

Y

Y

N

BLANK

DISPLAY TEST

CD SERVO TEST

Display shows

version number 

of the µP - software.

NEXT

 button

pressed?

Display shows

ALBUM DN

pressed?

Slide moves

outwards as

long as button

      is held        

depressed.

PLAY

 button

pressed?

ALBUM UP

pressed?

Y

Y

N

N

FOCUS  found?

Y

N

Display shows

FOCUS search

SLIDE MOTOR test

To enter Service

Testprogram hold

PLAY & DISPLAY 

buttons

depressed while

plugging mainscord in.

*

Door switch is ignored 

m

CD door can be opened. 

is software version, eg. S 4.15

N

*

Tuner test the sound settings 

Volume up/down

,

DSC

, 

IS and DBB 

function as in normal mode,

but flags will not be indicated on the display in all steps.

stands for Service mode,

N

Y

FORMAT EEPROM 

Display shows

if it is fail,

skip to

EEPROM is cleared and

default values are stored.

DISPLAY

 button

pressed?

This test should be done at the

end of the production process

so that every set is customised

before leaving factory.

table 2

EUROPE

FM/MW

USA

FM/MW

OVERSEAS

FM/MW

REGION

&

SET VERSIONS

1)Grid switchable

100/10kHz - 50/9kHz

/22/25

/37

/21/21M/30

TUNER VERSIONS

1)

To toggle frequency grid press 

BAND

 button for more than 5s in normal tuner mode (

not

 in service testmode)

.

 Display will show either                                 or                                 , and show                                 or      

     when button released.

N

Y

TAPE TEST 

Display shows

Solenoids of the deck

are activated for 2s and

deactivated for 3s.

Switch all actions off

REC

 button

pressed?

PLAY/DISPLAY

 button

pressed?

PLAY/DISPLAY

 button

pressed?

N

Y

TUN OSE

TUN USA

TUN EUR

Display shows

Enter sledge test

NEXT button

pressed?

Y

PREV button

pressed?

Y

N

N

Enter focus test

Display shows

disc motor turns

PLAY button

pressed?

Y

Slide stops 

moving

N

Slide moves

inwards as

long as button

      is held        

depressed.

PLAY button

pressed?

Y

Slide stops 

moving

N

skip to

N

SOURCE TEST

N

Display shows version

of tuner board as long as

PROGRAM

 key will be 

pressed.

Tuner is normal working

except for the 

PROGRAM

button.

POWER

switched off?

KEY TEST

Button

Display

Power
Clock set
Program
Band
Play

.

-

RECORD
SOURCE
IS
DSS
VOL DOWN
VOL DOWN

Table1

N

Y

Exit Service Testprogram

e.g.

N

Y

Y

KEY TEST 

SOURCE

 button

pressed?

This test should be done at the

end of the production process

so that every set is customised

before leaving factory.

Press every buttons,

Display shows

(See table 1)

PRESET UP  

pressed?

Display shows all

segments and flags

for checking open circuits.

see figure 1

IS

 - LED is switched on.

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