background image

3-2

3-2

Malfunction

 

check

 

chart

TDA7388

 

of

 

main

Main

 

board

 

which

 

in

Main

 

board

NO

NO

NO

Change

 

main

Check

 

tuner

 

circuit

and

 

its

 

conjoint

 

part

is

 

good

 

or

 

bad

NO

NO

NO

NO

NO

NO

SD

 

no

 

read

Change

 

servo

Whether

 

connect

 

to

 

SD

Check

 

the

 

socket

 

of

 

SD

SD

USB

 

no

 

read

Change

 

servo

Whether

 

connect

 

to

 

USB

Check

 

the

 

socket

 

of

 

USB

SD

Содержание CED230

Страница 1: ... 1 Main board circuit diagram 1 5 1 Main board circuit diagram 2 5 2 Pcb layout top bottom view 5 3 Servo board circuit diagram 1 6 1 Servo board circuit diagram 2 6 2 Layout diagram top bottom view 6 3 SB CB board circuit diagram 7 1 KEY board circuit diagram 9 1 KEY layout diagram top bottom view 9 2 Exploded view main unit 10 1 SB CB board layout top bottom view 7 2 LB SD CB board layout top bo...

Страница 2: ...ard inused CED230 X CED230 Feature diffrence Features TIPS C Component Lever Repair M Module Lever Repair Used MAIN BOARD SERVO BOARD KEY BOARD CONNECT BOARD SD BOARD LONG BOARD M C M C C C M C M C C C C C C C KEY BOARD SERVO BOARD SD BOARD LONG BOARD CONNECT BOARD MAIN BOARD 78 M C C M C C C C ...

Страница 3: ... 1 9kg 16V System Frequency response Signal noise ratio Total harmonic distortion Channel separation Video signal for mat Video output Disc digital audio system 20Hz 20k Hz 75dB Less than 0 3 1KHz 55dB NTSC PAL AUTO 1 0 2V Screen size Display resolution Active area Contrast ratio Brightness 3 0 inches 320x240 dots 65 52 W x36 84 H 300 200cd m 16 91 Frequency range FM Frequency range AM MW Usable s...

Страница 4: ...e aerial e g 7122 707 89001 To avoid atmospheric interference all AM measurements have to be carried out in a Faraday s cage Use a bandpass filter or at least a high pass filter with 250Hz to eliminate hum 50Hz 100Hz DUT DUT L R LF Generator e g PM5110 LEVEL METER e g Sennheiser UPM550 with FF filter S N and distortion meter e g Sound Technology ST1700B L R LEVEL METER e g Sennheiser UPM550 with F...

Страница 5: ...iring make sure that you are connected with the same potential as the mass of the set via a wrist wrap with resistance Keep components and tools also at this potential ESD CLASS 1 LASER PRODUCT Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified be used Safety components are marked by the symbol Lead free ...

Страница 6: ...e CDM fast lens cleaning playability ok playability ok playability ok Customer complaint CD related problem Check playability Play a CD for at least 10 minutes ann lnfo for customer SET OK return set For description see following pages For flap loaders access to CD drive possible clesning method is recommended ...

Страница 7: ...1 6 ...

Страница 8: ...ps 4 Take out the top cover with a forceps 3 loosen and take out the two bolts with a screw driver 6 loosen and take out the bolt with a screw driver 7 loosen and take out the bolt with a screw driver 8 loosen and take out the t bolt with a screw driver wo s 9 P carefully ull out the two pieces of connection pegs 10 loosen and take out the four bolt with a screw driver s 2 1 2 1 ...

Страница 9: ...iver 15 Loosen and take out the six bolts with a screwdriver 12 loosen and take out the bolt with a screw driver 13 loosen and take out the bolt with a screw driver 14 P carefully ull out the two pieces of connection pegs Disassembly Diagram 2 2 2 2 ...

Страница 10: ...ick 6 When software upgrade complete the device will power off automatically 1 Copy the file ROM BIN into USB stick note to delete the file MCU BIN 2 Power on the device and plug the USB stick into USB socket After the device read the content in the USB the LCD will show a upgrade menu and enter into the upgrading status 3 The LCD will appear a number changed from 20 to 0 and when arrived the numb...

Страница 11: ...hich in Main board NO NO NO Change main Check tuner circuit and its conjoint part is good or bad NO NO NO NO NO NO SD no read Change servo Whether connect to SD Check the socket of SD SD USB no read Change servo Whether connect to USB Check the socket of USB SD ...

Страница 12: ...4 1 4 1 WIRING DIAGRAM ...

Страница 13: ...5 1 5 1 MAIN BOARD CIRCUIT DIAGRAM 1 ...

Страница 14: ...5 2 5 2 MAIN BOARD CIRCUIT DIAGRAM 2 ...

Страница 15: ...5 3 5 3 MAIN BOARD PCB LAYOUT TOP BOTTOM VIEW ...

Страница 16: ...6 1 6 1 SERVO BOARD CIRCUIT DIAGRAM 1 ...

Страница 17: ...6 2 6 2 SERVO BOARD CIRCUIT DIAGRAM 2 ...

Страница 18: ...6 3 6 3 SERVO DIAGRAM BOARD LAYOUT TOP BOTTOM VIEW ...

Страница 19: ...7 1 7 1 SB CB BOARD CIRCUIT DIAGRAM ...

Страница 20: ...7 2 7 2 SB CB BOARD PCB LAYOUT TOP BOTTOM VIEW ...

Страница 21: ...8 1 8 1 LB SD CB BOARD CIRCUIT DIAGRAM ...

Страница 22: ...LB SD PCB CB BOARD LAYOUT TOP BOTTOM VIEW 8 2 8 2 ...

Страница 23: ...9 1 9 1 KEY BOARD CIRCUIT DIAGRAM ...

Страница 24: ...9 2 9 2 KEY BOARD LAYOUT DIAGRAM TOP VIEW BOTTOM ...

Страница 25: ...10 1 10 1 EXPLODED VIEW MAIN UNIT ...

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