Philips CED-230 Service Manual

Car Audio

CED230

TA B LE OF CO NT E NTS

Location of PCBS…………………………1-1

Specifications………………………………1-2

Measurement setup………………………1-3

Service aids………………………………1-4

Instructions on cd playability…………1-5/6

Disassembly diagram……………………2/-1 2
Software version check&upgrade…………3-1
Malfunction check chart……………………3-2

Wiring diagram………………………………4-1

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

SB+CB board-layout top/bottom view……7-2

LB+SD+CB board-circuit diagram……………8-1

LB+SD+CB board-layout top/bottom view……8-2

KEY board-circuit diagram………………9-1

KEY-

Exploded view-main unit…………………10-1

board-circuit diagram……………7-1

layout diagram top/ bottom view………9-2

WW 1228 BG LE

Vers ion 1.1

314178537781

Location of PCBs

1-1

KEY BOARD SERVO BOARD SD BOARD LONG BOARD CONNECT BOARD

VERSION VARIATIONS:

Board inused:

MAIN BOARD

SERVO BOARD

KEY BOARD

CONNECT BOARD

SD BOARD

LONG BOARD

Type/Versions

Service policy

/55 /51

M/C M/C
M/C M/C

C C
C C

C C
C C

MAIN BOARD

CED230(X)

/78

M/C
M/C

C
C

C
C

Type/Versions

Features

* TIPS:C--Component Lever Repair.

M--Module Lever Repair

--Used

Feature diffrence

CED230

/

SPECIFICATIONS

General Tuner

Power s upp ly:

Fuse:
Suita ble s peaker impeda nce :
Maxim um po wer output:
Conti nuo us power output :
Pre-A mp ou tput voltage:

Aux-i n lev el:
Dimen sio ns(WxHxD):
Weight:

Disc Player

1-2

12V DC( 11V )
negat ive g round

15A
4-8Ω

45Wx4 cha nnels
18Wx4 cha nnels(4Ω 10% T.H.D.)

2. 0V(CD p lay m ode;1kHz,0dB,
10KΩ loa d)
≥500mV

188x5 8x1 93mm

1. 9kg

-16V

Frequ enc y range

-FM

Frequ enc y range

-AM(M W)
Usabl e sen sitivity

-FM
Usabl e sen sitivity

-AM(M W)( S/N=20dB)
Frequ enc y response
Stere o sep aration
Signa l/n oise ratio

87.5-10 8. 0MH z(Eur)

65.0-74 .0 MHz (OIRT)

87.5-10 7. 9MH z(Ame)

522-1 620 KHz(Eur)

530-1 710 MHz(Ame)

8uV

30uV

30Hz- 15K Hz

30db( 1KH z)
＞55dB

Syste m:
Frequ enc y response:
Signa l/n oise ratio:
Total har mon ic distortion :
Chann el se paration:
Video signal fo r mat :
Video output:

LCD

Scree n siz e:
Displ ay re solution:
Activ e are a:
Contr ast r atio:
Brigh tne ss:

Disc di git al audio system
20Hz- 20k H z
＞75dB
Less th an 0. 3% (1KHz)
＞55dB

NTSC/ PAL/AUTO
1+/0. 2V

3. 0 inche s .
320x2 40 do ts

65.52 (W) x36.84(H)

300

200cd /m

(16 91)

Note:

Specifications and design are subject to change

without notice for product improvements.

MEASUREMENT SETUP

Tuner FM

1-3

Bandpass

25 0Hz- 15k Hz

e.g . 7122 70 7 48001

LF Voltmeter

e.g . PM253 4

RF Generato r

e.g . PM532 6

DUT

Ri=50Ω

S/N and disto rti on me ter

e.g . Sound Tec hnolo gy ST17 00B

Use a bandpas s fil ter t o eliminate hu m(5 0Hz ,100Hz) and di stu rba nce from th e pil ott one(19kHz, 38k Hz) .

Tuner AM (MW,LW)

RF Generato r

e.g . PM532 6

Ri=50Ω

DUT

Frame aeria l

e.g . 7122 70 7 89001

Bandpass

25 0Hz- 15k Hz

e.g . 7122 70 7 48001

LF Voltmeter

e.g . PM253 4

S/N and disto rti on me ter

e.g . Sound Tec hnolo gy ST17 00B

To avoid atmosp her ic in terference a ll AM- mea surements ha ve to b e car ried out in a Fara day s c age .
Use a bandpas s fil ter ( o r at least a high pa ss fi lte r with 250Hz) to e lim ina te hum ( 50Hz ,10 0Hz ) .

CD

Use Audio Sign al Di sc SB C429 4822 397 30 184
(replaces t est d isc 3 )

DUT

L

Cassette

Use Univers al Test Cassette C rO2 S BC4 19 4822 397 3006 9

or Universa l Te st Cassette Fe S BC4 20 48 22 397 30071

LF Generato r

e.g . PM5110

DUT

R

S/N and disto rti on me ter

e.g . Sound Tec hnolo gy ST17 00B

LEVEL ME TER

e.g . Sennh eiser U PM550

wit h FF-fi lter

'

L

R

S/N and disto rti on me ter

e.g . Sound Tec hnolo gy ST17 00B

LEVEL ME TER

e.g . Sennh eiser U PM550

wit h FF-fi lter

SERVICE AIDS

1-4

GB

All ICs and many other semi-conductors are
susceptible to electrostatic discharges (ESD).
Careless handling during repair can reduce life
drastically.
When repairing, 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.

WARNING

GB

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

!

.

ESD

CLASS 1

LASER PRODUCT

Lead free

INSTRUCTIONS ON CD PLAYABILITY

Custo mer c omplaint
"CD relat ed pr oblem"

Set remains closed!

Check p lay ability

①

1-5

playa bil ity

ok?

Y

Play a CD

for at lea st 10 m inutes

check playability

playa bil ity

ok?

Y

N

"fast" lens cleaning

check playability

playa bil ity

ok?

Y

N

③

N

For fla p loa ders(=acces s to CD d rive possible )
clesn ing m ethod④is recomm end ed

ann lnfo for cu sto mer

"SET OK "

retur n set

①-④For des cri ption see followin g pag es-

②

Exchange CDM

1-6

Disassembly Diagram

2-1 2-1

1、P collar

ull out the mounting from the

main set with two L-keys.

2、Press the release key first,
then take out the panel.

5、Take out the bottom cover with a forceps.

3、loosen and take out the two bolts
with a screw-driver.

4、Take out the top cover with a forceps.

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

ull out the two pieces of connection-pegs 10、loosen and take out the four bolt

carefully

with a screw-driver.

s

Disassembly Diagram

2-2 2-2

ull out the two pieces of connection-pegs

14、P

carefully

、

11 loosen and take out the bolt
with a screw-driver,

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,

3-1 3-1

Software version check & upgrade Upgrade software

Check MCU software version

1. Copy the file "MCU.BIN" into USB stick

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 wi ll appear a number (changed from 20 to 0), and when

arrived the number 0, then appear a processing bar, which mean
the device enters upgrading status.

4. In step 3. if want to enter into upgrading status quickly, press the
key OKto confirm, the processing bar will appear immediately.

5. Disconnect the USB stick.

6. When software upgrade complete, the device will power off automatically.

Check Servo software version

When the device is power on at the first time, in USB/SD/Disc mode,

press the key in turn:

stop up down left right

The LCD will display the servo software, MCU, TFT version num ber.

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 wi ll appear a number(changed from 20 to 0), and when arrived

the number 0, then appear a processing bar, which mean the device enters
upgrading status.

4. Press the key OK to confirm, the processing bar will appear immediately.

5. Disconnect the USB stick.

6. When software upgrade complete, the device will change to disc mod e automatic ally.

Malfunction check chart

3-2 3-2

Main bo ard w hich in

NO

NO

TDA73 88 of m ain

NO

Main bo ard

Check t une r circuit

and its c onj oint part

is good o r bad

NO

NO

NO

Chang e mai n

NO

NO

NO

SD no rea d

Wheth er co nnect to SD

Check t he so cket of SD

SD

Chang e ser vo

USB no re ad

Whether con nec t to US B

Check the soc ket o f USB

SD

Chang e ser vo

WIRING DIAGRAM

4-1 4-1

MAIN BOARD-CIRCUIT DIAGRAM-1

5-1 5-1

MAIN BOARD-CIRCUIT DIAGRAM-2

5-2 5-2

5-3 5-3

MAIN BOARD-PCB LAYOUT TOP/BOTTOM VIEW

SERVO BOARD-CIRCUIT DIAGRAM-1

6-1 6-1

SERVO BOARD-CIRCUIT DIAGRAM-2

6-2

6-2

6-3 6-3

SERVO DIAGRAM BOARD-LAYOUT TOP/BOTTOM VIEW

SB+CB BOARD-CIRCUIT DIAGRAM

7-1 7-1

7-2

SB+CB BOARD-PCB LAYOUT TOP/BOTTOM VIEW

7-2

LB+SD+CB BOARD-CIRCUIT DIAGRAM

8-1 8-1

8-2 8-2

LB+SD PCB+CB BOARD- LAYOUT TOP/BOTTOM VIEW

KEY BOARD-CIRCUIT DIAGRAM

9-1 9-1

9-2 9-2

KEY BOARD-LAYOUT DIAGRAM TOP/ VIEWBOTTOM

EXPLODED VIEW-MAIN UNIT

10-1 10-1