background image

CLASS 1

LASER PRODUCT

GB

3140 785 22570

Published by SS 0109 Service Audio

or otherwise without the prior permission of Philips.

system or transmitted, in any form or by any means, electronic, mechanical, photocopying,

All rights reserved. No part of this publication may be reproduced, stored in a retrieval

Copyright 1995 Philips Consumer Electroncis B.V. Eindhoven, The Netherlands

be used.

condition and that parts which are identical with those specified

Safety regulations require that the set be restored to its original 

C

PCS 107 248

Printed in The Netherlands

Copyright reserved

Subject to modification

CD Clock Radio

TABLE OF CONTENTS

chapter

Handling chip components and safety

1 - 1

.............................

Technical Specification & Service Tools

2 - 1

..........................

Service Measurement

2 - 2

..................................................

Connections & Controls

3 - 1

................................................

Disassembly Diagram

4 - 1

...................................................

Instructions for use

3 - 2 to 3 - 4

.................................................

CD Service Test Program

4 - 2 to 4 - 3

........................................

Block Diagram

5 - 1

.............................................................

Wiring Diagram

6 - 1

...........................................................

circuit diagram

7 - 1

.......................................................

MAIN BOARD (Part 1)

layout diagram

7 - 2

.......................................................

circuit diagram

8 - 1

.......................................................

MAIN BOARD (Part 2)

layout diagram

8 - 2

.......................................................

chapter

circuit diagram

9 - 1

.......................................................

TUNER BOARD

layout diagram

9 - 2

.......................................................

layout diagram

10 - 1

......................................................

CD MODULE

circuit diagram

10 - 2

......................................................

cabinet

11 - 1

.................................................................

EXPLODED VIEWS DIAGRAM

Mechanical partslist

11 - 1

.....................................................

Electrical partslist

12 - 1 to 12 - 5

...............................................

AJ3950

all versions

Summary of Contents for AJ-3950

Page 1: ...PCS 107 248 Printed in The Netherlands Copyright reserved Subject to modification CD Clock Radio TABLE OF CONTENTS chapter Handling chip components and safety 1 1 Technical Specification Service Tools 2 1 Service Measurement 2 2 Connections Controls 3 1 Disassembly Diagram 4 1 Instructions for use 3 2 to 3 4 CD Service Test Program 4 2 to 4 3 Block Diagram 5 1 Wiring Diagram 6 1 circuit diagram 7 ...

Page 2: ... essere collegato allo stesso potenziale che quello della massa delápparecchio tramite un braccialetto a resistenza Assicurarsi che i componenti e anche gli utensili con quali si lavora siano anche a questo potenziale 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 symb...

Page 3: ...17 W standby 3 4 W Dimension W x H x D 170 x 190 x 190 mm Weight 2 1 Kg AMPLIFIER Output power mains 2 x 0 8 W Speaker impedance 2 x 8 ohm Frequency response 100 Hz 10 kHz 4dB TUNER FM SECTION Tuning range 87 5 108 MHz IF frequency 10 7 MHz 0 3 MHz Sensitivity 3 µV at 26dB S N Selectivity 24 dB at 300kHz IF rejection 55 dB Image rejection 26 dB TUNER AM SECTION Tuning range MW 526 5 1606 5 kHz 17 ...

Page 4: ......

Page 5: ...R RESET stops the active buzzer radio or CD alarms for 24 hours LIFT TO OPEN opens closes CD door TUNING tunes to a radio station Pigtail aerial to improve FM reception Mains lead for AC mains supply The type plate is located on the bottom of the set CAUTION Use of controls or adjustments or performance of procedures other than herein may result in hazardous radiation exposure or other unsafe oper...

Page 6: ...op playback The display returns to clock time CD CD Selecting a different track during playback The track number appears briefly in the display when you press SEARCH or to skip tracks Press SEARCH once or more to skip to the next track s Press SEARCH more than once to skip to previous tracks Press SEARCH once and playback will return to the beginning of the current track Finding a passage within a...

Page 7: ...throughout the repeat alarm duration If you are using the CD alarm mode CD playback resumes at the point interrupted by the repeat alarm During the CD alarm CD playback continues for up to an hour unless you cancel reset the alarm WEEKEND SLEEPER This feature deactivates the alarm every Saturday and Sunday and resumes the alarm function Monday to Friday Make sure however that you have set the day ...

Page 8: ...Move set away from other electrical equipment ALARM The alarm does not function Alarm time not set See chapter on SETTING THE CLOCK AND ALARM TIMES Alarm mode not selected See chapter on SETTING THE ALARM OPTIONS Volume too low for radio CD buzzer alarm mode See chapter on Adjusting the Gentle wake volume WEEKEND SLEEPER WEEKEND SLEEPER does not function Day selection not set incorrect See chapter...

Page 9: ...ASSEMBLY DIAGRAM 4 1 4 1 PCS 107 254 A To remove Rear Cabinet B To remove Speaker Frame C To remove CD Tray and Middle Bracket D To remove Middle Bracket E To remove Main Board F To remove Repeat Alarm Key ...

Page 10: ... PLAY buttons depressed while power up the set fig 1 To leave Service Testprogram switch mode switch to off position Door switch is ignored Æ CD door can be opened Slide servo Radial servo Focus servo Disc motor and Laser are switched off Mute is switched on via decoder IC Volume up down buttons function independentely of the service testprogram N N CD TEST Disc motor turns clockwise as long as bu...

Page 11: ...utput programmable open drain VSSD1 33 1 digital ground 2 V2 V3 34 versatile I O input versatile pin 2 or output versatile pin 3 open drain WCLI 35 word clock iutput for data loopback to DAC SDI 36 serial data input for data loopback to DAC SCLI 37 serial bit clock input for data loopback to DAC RESET 38 power on reset input active LOW SDA 39 microcontroller interface data I O line open drain outp...

Page 12: ...BLOCK DIAGRAM 5 1 5 1 PCS 107 256 ...

Page 13: ...WIRING DIAGRAM 6 1 6 1 PCS 107 257 ...

Page 14: ...MAIN BOARD Part 1 CIRCUIT DIAGRAM 7 1 7 1 PCS 107 258 ...

Page 15: ...MAIN BOARD Component Side View LAYOUT DIAGRAM 7 2 7 2 PCS 107 259 CD KEYBOARD LAYOUT DIAGRAM KEYBOARD LAYOUT DIAGRAM KEYBOARD TOP LAYOUT DIAGRAM LED BOARD LAYOUT DIAGRAM ...

Page 16: ...MAIN BOARD Part 2 CIRCUIT DIAGRAM 8 1 8 1 PCS 107 260 ...

Page 17: ...MAIN BOARD Copper Side View LAYOUT DIAGRAM POWER BOARD LAYOUT DIAGRAM CD DOOR SWITCH LAYOUT DIAGRAM 8 2 8 2 PCS 107 261 ...

Page 18: ...09 B11 T010 F8 T012 G2 T013 F2 9020 9021 5111 5102 USA OSC 2116 2119 22n FM B GND FM Lo Hi B E C All SMD Transistors Top View from Solder Side 1 2 3 1104 2118 1u 2119 2108 20p USA OSC 3114 820R 2109 2p2 2104 10u 2117 1u 3120 100K T010 3121 22K 2105 24p 9021 9020 2 FM ANT 4 FM OSC 5 MT1 6 MT2 27 VCO AM FM S 25 VP 12 VSTABA VSTABB 8 WF420 2106 1 AM ANT 3 AM OSC 23 FM OSC 16 FM RFI 21 FM RFO 6 IFGND ...

Page 19: ...ter while adjusting the other one A 1 2 1 2 D f 500kHz VRF 100µV C D f 30kHz VRF 100µV fo fo max symmetric or A 1 3 2 D f 500kHz VRF 10µV A continuous wave VRF 1 mV or C 1 2 D f 15kHz VRF 10mV or or 1 2 B D f 30kHz VRF as low as possible fo max symmetric or max Vcc 7101 pin 30 2k2 4k7 220R 100nF 10 IC 7101 220R 100nF 14 IC 7101 repeat TUNER ADJUSTMENT TABLE 87 5 MHz 1001 E1 2122 D6 1104 A2 3101 E6...

Page 20: ... 3883 F3 3884 E3 3885 B5 3886 C5 3887 B5 3888 C5 3889 D5 3890 D2 3891 E2 3892 D2 3893 D2 3894 E3 3895 E2 3896 E2 3897 D2 3898 D2 3899 D2 3900 D4 4801 E5 4802 F2 4804 D4 4805 E4 4806 D5 4807 E2 4808 D5 4809 D5 4810 B2 4812 B4 4813 B3 4814 B3 4815 A4 4823 C2 4824 B2 4828 B2 4831 B3 4832 B3 4838 C5 4845 D2 4847 E1 4848 B4 4850 G5 4853 F2 4856 F5 4857 B4 4859 B5 4863 C5 4865 A4 4866 B4 4872 F2 4877 H5...

Page 21: ...803 82p 470R 15K 3843 1K 100K 3892 3816 47K 3859 3893 100K 2818 47n 2822 1n5 2826 47n 7802 A A 1 Y 2 82p 2805 33R 3827 3745 10R 2831 1u 3829 100R 3 3V 10K 3896 470R 22K 3831 3839 4K7 3841 3803 27K 47K 3861 3 3V 2819 33p LDON 2806 82p drive_recognition 3K9 3858 180p 2865 47u 2840 22K 3834 5V 180p 3807 1K5 2864 3890 100K 3815 4K7 3856 68K 3860 1K 100K 3891 3862 1K 3728 47R 3servo 3801 150K 7807 BC84...

Page 22: ...7679 CD Tray For AJ3950 406 9965 000 07676 Time Alarm Set Key For AJ3950 438 9965 000 07857 CD Tray For AJ3951 406 9965 000 07855 Time Alarm Set Key For AJ3951 438 9965 000 07865 CD Tray For AJ3952 406 9965 000 07863 Time Alarm Set Key For AJ3952 439 9965 000 07680 Rear Cabinet For AJ3950 407 9965 000 07675 Alarm Up Down Key 439 9965 000 07858 Rear Cabinet For AJ3951 408 9965 000 07674 Volume Up D...

Page 23: ...D207 4822 130 32778 Diode 1SS133 ZD101 9965 000 07692 Zener Diode 3 3V 0 5W ZD102 9965 000 07693 Zener Diode 2 7V 0 5W IC TRANSISTORS IC101 9965 000 07694 IC TMP86CH29F 1A90 IC201 4822 209 31544 IC TA8227P IC202 4822 209 83824 IC NJM7805FA Q101 9965 000 05370 Trans 2SC536NF NPA AT Q102 9965 000 05370 Trans 2SC536NF NPA AT Q103 4822 130 62782 Trans DTC114ESTP Q104 9965 000 05370 Trans 2SC536NF NPA ...

Page 24: ...84 Diode 1N4002RL D211 5322 130 30684 Diode 1N4002RL MISCELLANEOUS F201 9965 000 07701 Fuse 5T 1 25A 250V Note Only these parts mentioned in the list are normal service parts ELECTRICAL PARTSLIST MISCELLANEOUS MISCELLANEOUS JK201 9965 000 07698 3 5 Stereo Jack EJS5 0735G 01 SP1 9965 000 07699 Speaker 2 8 Ohm 2W SP2 9965 000 07699 Speaker 2 8 Ohm 2W SW101 9965 000 07525 CD Door Switch T201 9965 000...

Page 25: ... 63V 3788 482205120472 4K7 5 0 1W 2827 532212231647 1nF 10 X7R 63V 3800 482205120478 4R70 5 0 1W 2828 482212613692 47pF 1 NP0 63V 3801 482205120154 150K 5 0 1W 2829 482212613751 47nF 10 X7R 63V 3802 482205110102 1K 2 0 25W 2830 482212614043 1µF 80 20 Y5V 16V 3803 482205120273 27K 5 0 1W 2831 482212614043 1µF 80 20 Y5V 16V 3804 482205120472 4K7 5 0 1W 2832 532212233538 150pF 2 NP0 63V 3805 48220512...

Page 26: ...08 Jumper 3852 482211710834 47K 1 0 1W 4810 482205120008 Jumper 3853 482211683933 15K 1 0 1W 4812 482205120008 Jumper 3854 482205120822 8K2 5 0 1W 4813 482205120008 Jumper 3855 482211640227 4R6 25 12V 4814 482205120008 Jumper 3856 482205120683 68K 5 0 1W 4815 482205120008 Jumper 3857 482205120683 68K 5 0 1W 4823 482205120008 Jumper 3858 482205120392 3K9 5 0 1W 4824 482205120008 Jumper 3859 4822117...

Page 27: ...SAA7325H 7802 532220911517 IC PC74HCU04T 7803 532213060123 Trans BC807 40 7804 532220982941 IC LM358D 7807 532213042755 Trans BC847C 7808 482220932852 IC TDA7073A N2 7809 482220932852 IC TDA7073A N2 7810 482220933165 IC TDA1308T N1 7875 482213060511 Trans BC847B MISCELLANEOUS 1800 482226510925 Connector 15P 1823 482226511207 Connector 6P 1824 482226511207 Connector 6P 8000 482232012178 Flexible Fo...

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