Philips CEM250/51 Service Manual Download Page 32

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REVISION LIST

1.0 Manual 3141 785 33190

Initial Service Manual released.

1.1 Manual 3141 785 33191

In this version, the version CEM250X/78 added.
Page 11-2, Mechanical & Accessories Parts List updated.

129 996510020151 SERVO BOARD & CD MECHANISM (WAS 996510019824)
141 996510020150 CE250 MAIN BOARD (WAS 996510019787)

1.2 Manual 3141 785 33192

In this version, the version CEM250/98 added.
Page 11-2B & 11-3B, Mechanical & Accessories Parts List added.

1.3 Manual 3141 785 33193

In this version,

Page 11-4 Electrical Parts List updated.

U401 996510029623 IC UPD78F0547 W/SW /55/78 (WAS 996510019579)

Page 11-3B Electrical Parts List updated.

U401 996510029657 IC UPD78F0547 W/SW /98 (WAS 996510019579)

Summary of Contents for CEM250/51

Page 1: ...d in The Netherlands Subject to modification Car Entertainment System Version 1 4 CLASS 1 LASER PRODUCT 3141 785 33194 TABLE OF CONTENTS Page PCBs Location 1 1 Speci cations 1 2 Measurement Setup 1 3 Service Aids Safety Instruction etc 1 4 Instructures on CD Playability 1 5 to 1 6 Disassembly Diagrams 2 1 to 2 2 Software Version Check Upgrade 3 1 Malfunction Check Chart 3 2 Set Block Diagram 4 1 S...

Page 2: ...s Board inused CEM250 Feature diffrence Features TIPS C Component Lever Repair M Module Lever Repair Used SD BOARD SD BOARD FB BOARD FB BOARD KB BOARD KB BOARD CB BOARD CB BOARD MAIN BOARD MAIN BOARD SERVO BOARD SERVO BOARD 55 55 C C C C C C C C C C C C C M C M C M C M C M C M 78 98 78 98 ...

Page 3: ...le speaker impedance Maximum power output Continuous power output Pre Amp output voltage Subwoofer output voltage Aux in level Dimensions W H D Wight 12V DC 11V 16 negative ground 15V 4 8Ω 45W 4channels 22W 4channels 4Ω10 T H D 2 0V USB play mode 1kHz 0dB 10kΩ load 2 0V USB play mode 61kHz 0dB 10kΩ load 300mV 188 58 128MM 1 0kg Frequency range FM Frequency range AM MW Usable sensitivity FM Usable ...

Page 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...

Page 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 ...

Page 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 ...

Page 7: ...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 ...

Page 8: ...he two screws on the back side of the unit with a screw driver 4 Remove the screw 3 as shown 5 Remove the bottom cover with a tool 3 Remove the upper cover with a tool 6 Remove the screws 4 with a screw driver 7 Remove the screw 5 with a screw driver 8 Remove the connectors 6 and then remove the mechanism core 9 Remove the adhesive tapes 7 ...

Page 9: ...12 11 10 2 2 2 2 Disassembly Diagram 8 9 10 Remove the screw 8 11 Remove the screw 9 12 Remove the screw 10 13 Remove the connectors 11 and then remove the bracket with a tool 14 Remove the screws 12 ...

Page 10: ... 1 Copy servo software BOOT ALI and nemo bin into USB memory plug the USB memory into USB socket Device upgrade servo software automatically Don t power off or disconnect power during the upgrade LCD show SERVO UPGRADING DON T PWR OFF Around 1 minute servo software upgrade completed and device change to radio mode automatically 2 Delete the servo software in the USB and copy the MCU software CEM25...

Page 11: ... circuit and its conjoint part Check CD output Components Check tuner circuit and is conjoin part is good or bad Change the tuner Check cd whether rand disc and its functions whether connect to USB CD no sound Check CD control circuit is good or bad Change components of CD circuit CD Check the related components of CD signal channel cable socket is good or bad ...

Page 12: ...4 1 4 1 SET BLOCK DIAGRAM ...

Page 13: ... 8 A B FUSE B A Black Yellow Red Blue Brown Ground Lead Ignition key 12V DC When ON ACC To car battery Continuous 12V DC Motor Electric Antenna relay control Lead Amplifier relay control Lead Illumination brown White Black Stripe White Gray Black Stripe Green Black Stripe Gray Green Purple Black Stripe Purple Left Speaker Front Left Speaker Rear Right Speaker Front Right Speaker Rear A1 A2 A3 A4 A...

Page 14: ...6 1 6 1 MAIN BOARD CIRCUIT DIAGRAM ...

Page 15: ...6 2 6 2 MAIN BOARD PCB LAYOUT TOP BOTTOM VIEW ...

Page 16: ...7 1 7 1 SERVO BOARD CIRCUIT DIAGRAM ...

Page 17: ...7 2 7 2 SERVO BOARD LAYOUT DIAGRAM TOP BOTTOM VIEW ...

Page 18: ...8 1 8 1 CB FB USB BOARD CIRCUIT DIAGRAM ...

Page 19: ...8 2 8 2 CB BOARD PCB LAYOUT TOP BOTTOM VIEW ...

Page 20: ...8 3 8 3 FB BOARD PCB LAYOUT TOP BOTTOM VIEW ...

Page 21: ...8 4 8 4 USB BOARD PCB LAYOUT TOP BOTTOM VIEW ...

Page 22: ...9 1 9 1 SD BOARD CIRCUIT DIAGRAM ...

Page 23: ...SD BOARD PCB LAYOUT TOP BOTTOM VIEW 9 2 9 2 ...

Page 24: ...10 1 10 1 KB BOARD CIRCUIT DIAGRAM ...

Page 25: ...10 2 10 2 KB BOARD LAYOUT DIAGRAM TOP BOTTOM VIEW ...

Page 26: ...11 1 11 1 EXPLODED VIEW MAIN UNIT ...

Page 27: ...9 BUTTON SHADE Note 1 Only these parts mentioned in the list are 33 996510019816 BKT FOR SOURCE BUTTON normal service parts 34 996510019817 BUTTON BRACKET 35 996510019799 SOURCE BUTTON 2 For Key Board module please order 37 996510019796 DIAL UP BUTTON 996510019836_FRONT PANEL ASSY which _ contains Key Board 38 996510019797 DIAL DOWN BUTTON 39 996510019798 DBB AS BUTTON 3 For Main Board Servo Board...

Page 28: ...96510019610 LED B R L901 996510019555 CHOKE 200uH 1A 30 LED314 996510019610 LED B R Q101 996510019572 MOSFET AO3401 LED314 996510019610 LED B R Q101 996510019572 MOSFET AO3401 LED315 996510019610 LED B R Q201 996510019569 TRANSISTOR KTC8550 LED316 996510019610 LED B R Q202 996510019566 TRANSISTOR KRC102 NPN LED317 996510019610 LED B R Q203 996510019572 MOSFET AO3401 LED318 996510019821 LED BLUE SB...

Page 29: ...17 IC AM5766FM MOTOR DRIVER Q980 996510019566 TRANSISTOR KRC102 NPN U3 996510019621 IC AMS1117 3V3 SOT 223 AMS Q981 996510019570 TRANSISTOR MMBT3906LT1 PNP U7 996510019828 IC HY57V161610FTP 7 Q981 996510019570 TRANSISTOR MMBT3906LT1 PNP U7 996510019828 IC HY57V161610FTP 7 Q982 996510019566 TRANSISTOR KRC102 NPN U8 996510019619 IC EN25P20 100GCP 2M BIT SOP8 Q983 996510019572 MOSFET AO3401 XT2 99651...

Page 30: ...E D3 20mA Q408 996510019570 TRANSISTOR MMBT3906LT1 PNP B 996510019826 FFC 25P 1 0mm 120mm TYPE A LED105 996510019820 LED WHITE D3 20mA Q409 996510019571 TRANSISTOR 2N3904 NPN B 996510019826 FFC 25P 1 0mm 120mm TYPE A LED105 996510019820 LED WHITE D3 20mA Q409 996510019571 TRANSISTOR 2N3904 NPN C 996510019729 FFC 6P 1 0mm 35mm TYPE A LED106 996510019820 LED WHITE D3 20mA Q410 996510019570 TRANSISTO...

Page 31: ...EZJZ1V800AA 3pF DC18V R718 996510019564 V RES EZJZ1V800AA 3pF DC18V ZR417 996510019564 V RES EZJZ1V800AA 3pF DC18V R929 996510019564 V RES EZJZ1V800AA 3 F DC18V ZR418 996510019564 V RES EZJZ1V800AA 3 F DC18V R929 996510019564 V RES EZJZ1V800AA 3pF DC18V ZR418 996510019564 V RES EZJZ1V800AA 3pF DC18V R930 996510019564 V RES EZJZ1V800AA 3pF DC18V ZR419 996510019564 V RES EZJZ1V800AA 3pF DC18V SD901 ...

Page 32: ...NISM WAS 996510019824 141 996510020150 CE250 MAIN BOARD WAS 996510019787 1 2 Manual 3141 785 33192 In this version the version CEM250 98 added Page 11 2B 11 3B Mechanical Accessories Parts List added 1 3 Manual 3141 785 33193 In this version Page 11 4 Electrical Parts List updated U401 996510029623 IC UPD78F0547 W SW 55 78 WAS 996510019579 Page 11 3B Electrical Parts List updated U401 996510029657...

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