Philips FWM998 Service Manual Download Page 11 | Manualshive

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CIRCUIT DIAGRAM - MAIN BOARD

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Summary of Contents for FWM998

Page 1: ...r permission of Philips CONTENTS Technical specification 1 2 Version variation 1 2 Service measurement setup 1 3 Service aids 1 4 Instructions on CD playability 2 1 2 2 Block diagram 3 1 Wiring diagram 4 1 Disassembly diagram 5 1 5 2 Main board Circuit diagram 6 1 Layout diagram 6 2 6 3 Display board Circuit diagram 7 1 7 2 Layout diagram 7 3 7 4 USB SD board Circuit diagram 8 1 Layout diagram 8 2...

Page 2: ...ions RCA Aux in 3 5mm stereo line in MP3 link USB USB host Microphone Dual Microphone sockets Other connections FM Antenna MW Antenna Convenience Alarms CD Alarm Radio Alarm USB alarm Sleep timer Clock On main display Display Type FTD Karaoke MIC volume Echo control Accessories Remote control 36 key with 2xAAA batteries User Manual Spanish B Portuguese Guarantee booklet Global version Included acc...

Page 3: ...15kHz e g 7122 707 48001 LF Voltmeter e g PM2534 DUT S N and distortion meter e g Sound Technology ST1700B Frame aerial e g 7122 707 89001 Tuner AM MW LW 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 RF Generator e g PM5326 Ri 50 Bandpass 250Hz 15kHz e g 71...

Page 4: ...ng 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 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 Lead free ...

Page 5: ...T OK check playability N Y playability ok check playability check playability return set Customer complaint CD related problem fast lens cleaning 1 2 3 For flap loaders access to CD drive possible cleaning method 4 is recommended INSTRUCTIONS ON CD PLAYABILITY 2 1 Exchange CDM 1 4 For description see following pages ...

Page 6: ...viously caused by a scratched dirty or copy protected CD In case problems remain the customer is requested to contact the workshop directly The lens cleaning method 3 should be mentioned in the addendum sheet The final wording in national language as well as the printing is under responsibility of the Regional Service Organizations 4 LIQUID LENS CLEANING Because the material of the lens is synthet...

Page 7: ...ALSH SST29VF080B PICK UP MOTOR ADC WM8782 3CDC DRIVER IC TDA7073A MUX 74LVC157 AUX TUENR PACK MICRO PHONE USB SD MOTOR DRIVER BA5826 IIC MUL L R IIC PCM BCK LRCK DATE PCM CD L R TUNER L R CONTROL DATA CD PCM BCK LRCK DATE FUNCTION IC TDA7468D 3CD LOADER RL RR TDA8954 MAIN L R TDA8954 FR SUB L TDA8954 SUB R FL 2 250W 2 150W 2 250W ...

Page 8: ...KEY CONTROL BOARD SOUND KEY CONTROL BOARD VOLUME CONTROL BOARD VFD BOARD MCU BOARD CD BOARD AMP BOARD MAIN BOARD CLOSE OPEN MOTOR BOARD MOTOR BOARD POWER SUPPLY POWER CONNECT WIRING DIAGRAM 4 1 4 1 ...

Page 9: ...ar portion 5 1 5 1 A B C D 1 Slide out the CDC Tray as shown in the diagram below with the help of a flat head screw driver Dismantling of the CDC Module 2 Remove the Cover Tray CDC as indicated 3 Loosen 2 screws E and 2 screws F to remove the CDC Module as indicated Sliding Out The CDC Tray Remove Cover Tray CDC F Rear Portion E DISASSEMBLY INSTRUCTIONS ...

Page 10: ... 3 Remove 8 screws C and 4 screws G as indicated to loosen the Amp Board 4 Remove 4 screws D as indicated to loosen the AC Board A B C E F D G H 5 Remove 6 screws H and 3 PCB Spacer I as indicated to loosen the Switch Power Board 6 Remove 9 screws J as indicated to loosen the Display Board 7 Remove 12 screws K as indicated to loosen the Volume Board J I K 5 2 5 2 ...

Page 11: ...CIRCUIT DIAGRAM MAIN BOARD 6 1 6 1 ...

Page 12: ...PCB LAYOUT MAIN BOARD TOP SIDE 6 2 6 2 ...

Page 13: ...PCB LAYOUT MAIN BOARD BOTTOM SIDE 6 3 6 3 ...

Page 14: ...CIRCUIT DIAGRAM DISPLAY BOARD PART1 7 1 7 1 ...

Page 15: ...CIRCUIT DIAGRAM DISPLAY BOARD PART2 7 2 7 2 ...

Page 16: ...PCB LAYOUT DISPLAY BOARD TOP SIDE 7 3 7 3 ...

Page 17: ...PCB LAYOUT DISPLAY BOARD BOTTOM SIDE 7 4 7 4 ...

Page 18: ...CIRCUIT DIAGRAM USB SD BOARD 8 1 8 1 ...

Page 19: ...PCB LAYOUT USB BOARD PCB LAYOUT SD BOARD 8 2 8 2 ...

Page 20: ...1 1A 2 1Y 3 2A 4 2Y 5 3A 6 3Y 7 GND 8 4Y 9 4A 10 5Y 11 5A 12 6Y 13 6A 14 VCC U7 74CTO4 Y1 600KHZ C83 1N R73 47K C84 1N R74 47K Q7 BC857 R75 47K R76 10K R77 1K C85 1N R78 6 8K R79 1M R80 OPEN R81 47K R82 10K C86 33PF Y2 700KHZ C92 100P R83 10K R84 1K C93 22UF 50V C226 100N C228 100P R87 0R C229 10p C231 102 R27 1 5k C60 1UF 50V R28 47K R29 1K R30 39K R31 1K R32 4K7 R33 47K R53 1K C104 22UF 50V R54 ...

Page 21: ...PCB LAYOUT AMP BOARD TOP SIDE 9 2 9 2 ...

Page 22: ...PCB LAYOUT AMP BOARD BOTTOM SIDE 9 3 9 3 ...

Page 23: ...CIRCUIT DIAGRAM CD BOARD 10 1 10 1 ...

Page 24: ...LAYOUT DIAGRAM CD BOARD TOP SIDE 10 2 10 2 ...

Page 25: ...LAYOUT DIAGRAM CD BOARD BOTTOM SIDE 10 3 10 3 ...

Page 26: ...CIRCUIT DIAGRAM MCU BOARD 11 1 11 1 ...

Page 27: ...PCB LAYOUT MCU BOARD TOP SIDE 11 2 11 2 ...

Page 28: ...PCB LAYOUT MCU BOARD BOTTOM SIDE 11 3 11 3 ...

Page 29: ...EXPLODED VIEW 12 1 12 1 ...

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