Philips FWM375, Service Manual

Page 1: ...opying or otherwise without the prior permission of Philips Published by SL0749 Service Audio Printed in The Netherlands Subject to modification GB 3141 785 31931 Mini System TABLE OF CONTENTS Page Specifications 1 1 Measurement Setup 1 2 Service Aids Safety Instruction etc 1 3 to 1 5 Block Diagram 2 Wiring Diagram 3 Front Board 4 Hi AMP Board 5 Main Board 6 Power Low AMP Board 7 Mechanical Explod...

Page 2: ... CD MPEG AUDIO MP3 CD bit rate 32 256 kbps 128 kbps advised Sampling frequencies 32 44 1 48 kHz TUNER FM wave range 87 5 108 MHz MW wave range 9 kHz 515 1630 kHz TAPE PLAYER Frequency response Normal tape type I 125 8000 Hz 8 dB Signal to noise ratio Normal tape type I t 40 dBA Wow and flutter d 0 4 JIS SPEAKERS System 1 way 1 port bass reflex Impedance 6 Woofer 1 x 4 Tweeter 1 x 1 5 Dimensions w ...

Page 3: ...5kHz 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 50Ω Bandpass 250Hz 15kHz e g 71...

Page 4: ...ICE AIDS GB WARNING 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 ESD CLASS 1 LASER PRODUCT GB Safety regulations require ...

Page 5: ...ce CD Drive Laser current ok N Y check Laser current CD Drive offsets ok N Y check CD Drive offsets clean the lens check playability return set Customer complaint CD related problem return set return set replace CD Drive return set replace CD Drive return set replace Signal Processor return set fast lens cleaning 1 2 3 4 5 6 7 For flap loaders access to CD drive possible cleaning method 4 is recom...

Page 6: ...o 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 3 FAST LENS CLEANING dry brush Use lens cleaning CD SBC AC300 9082 100 00043 Insert the lens cleaning CD press PLAY and follow the voice guide s instructions on the CD 4 LIQU...

Page 7: ... a DC Millivoltmeter directly on the connector see drawing below Pin numbering varies from drive to drive The values from diode A D should read 0 10mV Diodes E and F are less critical If one of the offsets is higher than 10mV the CD drive has to be replaced Otherwise replace the Signal Processor Sanyo DA12T3 CD Drive A A F C B E C D E VCC B VREF F D 9 10 11 12 13 14 15 16 1800 5V_HF VrefCD10 A D E...

Page 8: ...2 1 2 1 SET BLOCK DIAGRAM ...

Page 9: ...SET WIRING DIAGRAM 3 1 3 1 ...

Page 10: ...4 1 4 1 PCB LAYOUT FRONT BOARD TOP VIEW ...

Page 11: ...PCB LAYOUT FRONT BOARD BOTTOM VIEW 4 2 4 2 ...

Page 12: ...4 3 4 3 CIRCUIT DIAGRAM FRONT BOARD ...

Page 13: ...5 1 5 1 PCB LAYOUT HI AMP BOARD ...

Page 14: ...5 2 5 2 CIRCUIT DIAGRAM HI AMP BOARD ...

Page 15: ...6 1 6 1 PCB LAYOUT MAIN BOARD TOP VIEW ...

Page 16: ...PCB LAYOUT MAIN BOARD BOTTOM VIEW 6 2 6 2 ...

Page 17: ...6 3 6 3 CIRCUIT DIAGRAM MAIN BOARD ...

Page 18: ...6 4 6 4 CIRCUIT DIAGRAM MAIN BOARD TAPE PART ...

Page 19: ...7 2 7 2 PCB LAYOUT POWER LOW AMP BOARD TOP VIEW ...

Page 20: ...7 2 7 2 CIRCUIT DIAGRAM POWER BOARD ...

Page 21: ...7 3 7 3 CIRCUIT DIAGRAM LOW AMP BOARD ...

Page 22: ...8 1 8 1 SET MECHANICAL EXPLODED VIEW ...

Page 23: ...7 VOLUME DECORTIVE RING T801 996510005262 TRANSFORMER EI76 127 240V 77 15 994000001295 DAMPER GEAR ASS Y T801 996510009410 TRANSFORMER EI76 240V 50Hz 05 16 994000004583 CASSETTE KEY WITH HOLDER 18 994000004374 CASS DECK CS 21SC 820DT 19 994000004586 RECORD ARM 20 996510005275 TUNING KNOB 21 994000004591 RING POWER 22 996510005276 POWER BUTTON 23 994000004589 POWER BUTTON BASE 24 996510005271 PLAY ...

Page 24: ...8L05 TO 92 F801 994000004599 FUSE RADIAL T3 15A 250V Q107 994000004142 NPN TRANSISTORS 9013G 1W U403 994000002839 IC LM1117S 3 3 F802 994000001222 FUSE RADIAL LT 2A 250V Q108 994000001193 TRANSISTORS KSB772YS VOL401 994000001241 ROTARY ENCODER F803 996510005248 GLASS FUSE 5x20mm T8AL 250V Q109 994000004338 SMD TRANSISTORS PMBT3904 VR401 994000001324 ROTARY VOLUME 20K IC201 994000004533 IC YD7312 Q...

Page 25: ...S 9014C SW407 994000001243 TACT SWITCH L306 994000004611 I F T 7MM 7M1A2224N SW408 994000001243 TACT SWITCH L307 994000003653 BOBBIN COIL WHITE 1 1 2T Q903 994000004545 TRANSISTORS BUK9507 30B SW409 994000001243 TACT SWITCH PVC301 996510009405 P V C 126 20P T443DF 4DF43Z HQ T802 994000000262 TRANSFORMER EI 28 AC230V U801 996510003984 IC CYT78L05 TO 92 SW410 994000001243 TACT SWITCH Q101 9965100013...

Page 26: ...41 785 31930 Initial Service Manual released 1 1 Manual 3141 785 31931 In this edition the version 05 has been added 1 Page 8 2 Mechanical Accessories Parts List updated 2 Page 8 4 have been added with version 05 Eletrical Partslist ...