Philips-AJ-3950-Service-Manual(1) 电路图 维修手册.pdf

《Philips-AJ-3950-Service-Manual(1) 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Philips-AJ-3950-Service-Manual(1) 电路图 维修手册.pdf（27页珍藏版）》请在收音机爱好者资料库上搜索。

1、CLASS 1 LASER PRODUCT GB3140 785 22570Published 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 ret

2、rieval 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 NetherlandsCopyright reservedSubject to modif

3、ication CD Clock Radio TABLE OF CONTENTS chapter Handling chip components and safety1 - 1. Technical Specification - stops sleep function in CD mode; - stops the active CD alarm for 24 hours. 2PLAY/ PAUSE 2; - starts/ pauses CD playback. 3SEARCH , - skips CD tracks/ searches for a particular passage

4、. GENERAL 4SLEEP - activates and adjusts the sleep time. 5REPEAT ALARM/ BRIGHTNESS CONTROL - changes the brightness of the display illumination; - switches off the alarm for a 9 minute period; - stops sleep function in CD, buzzer or radio mode. 6WEEKEND-SLEEPER - deactivates alarm 1 and/ or 2 for th

5、e weekend. 7Display - shows the clock/ alarm time and status of the set. 8ALARM 1 MODE/ OFF or ALARM 2 MODE/ OFF - sets/ reviews/ switches off alarm 1 or 2. RADIO 9ON/ OFF - switches the radio on/ off; - stops sleep function in radio mode; - stops the active radio alarm for 24 hours. 0FM/ AM (MW) -

6、selects the radio waveband. SETTING TIMES !ALARM 1, ALARM 2, TIME - sets the respective alarm or clock time 7, 8 - adjusts clock/ alarm times; - adjusts the gentle wake minimum and maximum volume level for alarm 1 or 2; - selects a CD wake up track for alarm 1 or 2. #VOLUME $, 3 - adjusts the sound

7、level. $Frequency indicator - shows the radio frequency of your selected waveband %SET DAY - sets the day for weekend sleeper activation. 24 HR RESET - stops the active buzzer, radio or CD alarms for 24 hours. to start playback. The CD indicator , Cd:- and the total number of tracks are shown, follo

8、wed by the first track number before returning to clock time. door is shown if you have not closed the CD door/ open the CD door during playback. noCd is shown if no CD has been inserted/ inserted incorrectly. nFCd is shown if the CD-R(W) is non-finalized Err indicates a general error in operation o

9、f the set. The display returns to clock time. 4 Adjust the sound with VOLUME $ or 3. 5 To interrupt, press PLAY/ PAUSE 2;. The current track number shows briefly before returning to clock time. flashes during pause. 6 Press PLAY/ PAUSE 2; again to resume playback. 7 Press STOP 9 to stop playback. Th

10、e 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 onc

11、e and playback will return to the beginning of the current track. Finding a passage within a track 1 During playback, press and hold down SEARCH or . The CD is played at high speed and low volume; the display will show Cd: and your current track number. 2 Release SEARCH or when you recognize the pas

12、sage you want. Normal CD playback and standby clock time resumes. RADIO 1 Press ON/ OFF to switch on the radio. tu is displayed briefly followed by the clock time , and the last selected waveband. 2 Press FM/ AM if you wish to change waveband. 3 Adjust the sound using VOLUME $ or 3. 4 Adjust the TUN

13、ING wheel to tune to a radio station. To improve reception: FM: Extend pigtail at the back of the set fully for optimum reception. AM (MW): uses a built-in aerial. Direct the antenna by adjusting the position of your set. 5 Press ON/ OFF to switch off the radio. and the waveband disappear from the d

14、isplay. SETTING THE ALARM OPTIONS General Two different alarm times, ALARM 1 or 2 can be set in the CD, radio or buzzer modes. This can be useful when for example you need to be woken up at a different time during the week and at the weekend. - Remember to first set the DAY, clock and alarm time fun

15、ctions correctly! - Make sure your selected alarm symbol is shown. Viewing the Alarm Mode Options 1 Select your choice of alarm mode by pressing ALARM 1 or ALARM 2 MODE/ OFF once or more to find your respective mode. The alarm mode display sequence is shown: Lo:00 default volume level for start of g

16、entle wake alarm H1:16 default maximum volume level for gentle wake alarm Followed by the 3 different alarms: (buzzer) k AL, or (radio) m tu, or CD modewith CD and a track number 1-99. 2 Read the following chapters to adjust or select the respective modes. Adjusting the Gentle Wake Volume A sure way

17、 of getting up in the mornings, the gentle wake volume for the alarm begins from gentle volume e.g Lo:00 (low) and gradually increases to a higher volume e.g. H1:11. The default volume range is Lo:00 and H1:16. If you wish to change the default volume for the buzzer, radio or CD alarm: 1 In the stan

18、dby mode, press ALARM 1 MODE/ OFF or ALARM 2 MODE/ OFF once. 2 As soon as Lo:00 appears, press 7or 8once or more to adjust the starting volume of your alarm. 3 To set the maximum volume for your alarm, press ALARM 1 MODE/ OFF or ALARM 2 MODE/ OFF again to change to the H1:16 display. 4 As soon as H1

19、:16 appears, press 7or 8until you reach the desired volume level (10-32). Notes: The H1 volume is always greater or equal to the RADIO RADIO PCS 107 252 3-3 INSTRUCTIONS FOR USE Lo volume: e.g.i. Lo:15, H1:19 e.g.ii. Lo:12, H1:12 The starting volume is Lo:00, with a possible low volume range 00-32,

20、and the maximum volume is H1:32, with a possible high volume range10-32. The gentle wake volume settings do not affect normal CD and radio playback volume level. It is not possible to review the gentle wake volume range during the active alarm call as pressing ALARM 1 MODE/ OFF or ALARM 2 MODE/ OFF

21、cancels the alarm completely. During the alarm call, if you press 7or 8the high volume stops increasing immediately. Selecting Buzzer or Radio Alarm Press ALARM 1 MODE/ OFF or ALARM 2 MODE/ OFF repeatedly until the (buzzer) k AL or (radio) m tu display is shown. Note: If you have selected the radio

22、alarm m tu, make sure you have tuned properly to a station. CD Alarm Mode: Selecting a CD track You can program and select a CD track number between 1-99, when the set is in the standby or radio playback mode. However, if the track number programmed does not exist on your CD, the CD will start playb

23、ack from the first track during the alarm call. 1 Insert a CD into the CD compartment. 2 Press ALARM 1 MODE/ OFF or ALARM 2 MODE/ OFF repeatedly until the CD and track number display is shown. See figure 3. 3 As soon as the CD alarm display appears, press 7or 8until the desired track number is shown

24、. The display returns to standby clock time. 4 To review your programmed track number, press ALARM 1 MODE/ OFF or ALARM 2 MODE/ OFF again repeatedly until the CD alarm display is shown. Note: The buzzer alarm option will automatically replace the CD alarm if you have: inserted a CD incorrectly; inse

25、rted a damaged CD; forgotten to insert any CD; not closed the CD door properly. SWITCHING OFF THE ALARM There are three ways of switching off the alarm. Unless you cancel the alarm completely, the 24 HOUR ALARM RESET will be automatically selected after 59 minutes, from the time your alarm time firs

26、t goes off. 24 HOUR ALARM RESET If you want the alarm mode to be stopped immediately but also wish to retain the same alarm setting for the following day: Press from 3 possible options according to your selected alarm: a 24 HR RESET to switch off the buzzer, radio or CD alarms b STOP 9 CD alarm only

27、 c ON/ OFF radio alarm only. You will hear a beep tone confirming 24 hour reset activation. CANCELING THE ALARM COMPLETELY To cancel the set alarm time before it goes off, or during the alarm call: Press ALARM 1 MODE/ OFF or ALARM 2 MODE/ OFF once or more until the selected alarm indicator disappear

28、s from the display. If you cancel the alarm during the alarm call, you will also hear a beep tone confirming the alarm has been cancelled. REPEAT ALARM This will repeat your alarm call at 9-minute intervals. During the alarm call, press REPEAT ALARM/ BRIGHTNESS CONTROL. Repeat if desired up to an ho

29、ur. Notes: The selected alarm mode k, m , orindicators will flash 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 alar

30、m. 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 first. See chapter on SETTING THE DAY. 1 Press WEEKEND-SLEEPER once or more until ZZ appears for one or both alarms. 2 To can

31、cel the weekend-sleeper function repeat step 1 until ZZdisappears from the display. See figure 4. SLEEP About Sleep The CD clock radio has a built-in sleep timer which enables the set to be automatically switched off during radio or CD playback after a set period of time. There are four sleep times

32、before the set turns itself off: 10, 30, 60, 90 minutes and off. The sleep function does not affect the operation of your alarm settings. Setting Sleep 1 Press PLAY/ PAUSE 2;(CD) or ON/ OFF (radio) to switch on the respective mode. For the CD mode, make sure you have inserted a disc first. 2 Select

33、your sleep time by pressing SLEEP once or more until the desired sleep time is shown. See figure 5 3 To cancel the sleep function you can either: press SLEEP once or more untily disappears from the display press REPEAT ALARM/ BRIGHTNESS CONTROL press STOP 9 (CD only) press ON/ OFF (radio only). MAIN

34、TENANCE General (See figure 6) If you do not intend to use the CD clock radio for a long time, withdraw the power plug from the wall outlet. Do not expose the set or CDs to humidity, rain, sand or excessive heat caused by heating equipment or direct sunlight. To clean the set, use a soft, slightly d

35、ampened chamois leather. Do not use any cleaning agents containing alcohol, ammonia, benzene or abrasives as these may harm the housing. CD player and CD handling The lens of the CD player should never be touched! Sudden changes in the surrounding temperature can cause condensation to form and the l

36、ens of your CD player to cloud over. Playing a CD is then not possible. Do not attempt to clean the lens but leave the set in a warm environment until the moisture evaporates. Always shut the CD door to keep the CD compartment dust-free. To clean, dust the compartment with a soft dry cloth. To take

37、a CD out of its box, press the centre spindle while lifting the CD. Always pick up the CD by the edge and replace the CD in its box after use to avoid scratching and dust. To clean the CD, wipe in a straight line from the centre towards the edge using a soft, lint-free cloth. Do not use cleaning age

38、nts as they may damage the disc. Never write on a CD or attach any stickers to it. Environmental information All unnecessary packaging material has been omitted to make the packaging easy to separate into three materials: cardboard (box), expandable polystyrene (buffer), polyethylene (bags, protecti

39、ve foam). Your set consists of materials which can be recycled if disassembled by a specialized company. Please observe local regulations on the disposal of packing materials and old equipment. SLEEP INSTRUCTIONS FOR USE 3-4 PCS 107 253 Problem Possible Cause - Remedy No sound Volume not adjusted -

40、Adjust the volume No reaction to any operation of the buttons Electrostatic discharge - Disconnect the set from the power supply and reconnect the set after 5 minutes CD PLAYER CD playback does not work CD badly scratched or dirty - Replace/ clean CD Laser lens steamed up - Wait until lens has accli

41、matized Laser lens dirty - Clean lens by playing a CD lens cleaning disc CD-R(W) is non-finalized - Use a finalized CD-R(W) RADIO Occasional crackling sound during FM broadcast Weak signal - Extend pigtail fully Continuous crackling/ hiss disturbance during AM (MW) broadcast Electrical interference

42、from TVs, computers, fluorescent lamps, etc. - 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

43、 alarm mode. - See chapter on Adjusting the Gentle wake volume WEEKEND-SLEEPER WEEKEND-SLEEPER does not function Day selection not set/ incorrect - See chapter on SETTING THE DAY WEEKEND-SLEEPER not set - Set WEEKEND-SLEEPER This product complies with the radio interference requirements of the Europ

44、ean Union. TROUBLESHOOTING If a fault occurs, first check the points listed below before taking the set for repair. If you are unable to remedy a problem by following these hints, consult your dealer or service centre WARNING: Do not open the set as there is a risk of electric shock! Under no circum

45、stances should you try to repair the set yourself, as this will invalidate the guarantee. DISASSEMBLY DIAGRAM 4-14-1 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

46、Key CD SERVICE TEST PROGRAM 4-24-2 PCS 107 255 STOP button pressed in any step returns to begin of Service Testprogram. ALARM 1 button pressed? STOP button pressed? N Y Y Y Display shows all segments and flags. see figure 1 DISPLAY TEST CD SERVO TEST Display shows version number of the ?P - software

47、. PLAY button pressed? Display shows SLEEP button pressed? NEXT button pressed? PREV. button pressed? 24 HR RESET button pressed? SET DAY button pressed? Slide moves outside as long as button is held depressed. Slide moves inside as long as button is held depressed. YYYYY NNNNN FOCUS found? Y N Disp

48、lay shows objective moves up this pin should be tied LOW CL162616.9344 MHz system clock output DATA27serial d4(1)ata output (3-state) WCLK28word clock output (3-state) SCLK29serial bit clock output (3-state) EF30C2 error flag output (3-state) TEST231test control input 2; this pin should be tied LOW

49、KILL32kill output (programmable; open-drain) VSSD133(1)digital ground 2 V2/V334versatile I/O: input versatile pin 2 or output versatile pin 3 (open-drain) WCLI35word clock iutput (for data loopback to DAC) SDI36serial data input (for data loopback to DAC) SCLI37serial bit clock input (for data loopback to DAC) RESET38power-on reset input (active LOW) SDA39microcontroller interface data I/O line (open-drain output) SCL40microcontroller interface clock line input Abbreviations and Pin-descr