Philips-FWC-270-Service-Manual(1) 电路图 维修手册.pdf

《Philips-FWC-270-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-FWC-270-Service-Manual(1) 电路图 维修手册.pdf（60页珍藏版）》请在收音机爱好者资料库上搜索。

1、GB CLASS 1 LASER PRODUCT COMPACT DIGITAL AUDIO Service Manual Service ServiceService ServiceService FWC270/21 TABLE OF CONTENTS Page Location of PCBs fr Reparaturen sind Original-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lapparecchio venga rimesso nelle condizioni originali e che

2、 siano utilizzati i pezzi di ricambio identici a quelli specificati. After servicing and before returning set to customer perform a leakage current measurement test from all exposed metal parts to earth ground to assure no shock hazard exist. The leakage current must not exceed 0.5mA. CLASS 1 LASER

3、PRODUCT 3122 110 03420 GB Warning ! Invisible laser radiation when open. Avoid direct exposure to beam. SVarning ! Osynlig laserstrlning nr apparaten r ppnad och sprren r urkopplad. Betrakta ej strlen. SFVaroitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina nkymttmlle laserist

4、eilylle. l katso steeseen! DK Advarse ! Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strling. PREPARATIONS AND CONTROLS 1-7 Preparations Rear connections The type plate is located at the rear of the system. APower Before connecting the AC power cord

5、to the wall outlet, ensure that the following are done; If your system is equipped with a Voltage Selector, set the VOLTAGE SELECTOR to the local power line voltage. All other connections have been made. WARNING! For optimal performance, use only the original power cable. Never make or change any co

6、nnections with the power switched on. To avoid overheating of the system, a safety circuit has been built in. Therefore, your system may switch to Standby mode automatically under extreme conditions. If this happens, let the system cool down before reusing it (not available for all versions). BAnten

7、nas Connection Connect the supplied AM loop antenna and FM antenna to the respective terminals. Adjust the position of the antenna for optimal reception. AM Antenna Position the antenna as far as possible from a TV, VCR or other radiation source. SPEAKERS ? 6? ? R? +? ? L? ? +? SUBWOOFER? OUT? AM? A

8、NTENNA? FM? ANTENNA? L?R? speaker? (right)? speaker? (left)? FM wire antenna? AM loop ? antenna? B C AUX/CDR? A AC power cord? VOLTAGE? SELECTOR? 110V-? 127V? 220V-? 240V? VOLTAGE? SELECTOR? 220V-? 240V? 110V-? 127V? Preparations FM Antenna For better FM stereo reception, connect an outdoor FM anten

9、na to the FM ANTENNA terminal. CSpeakers Connection Connect the speaker wires to the SPEAKERS terminals, right speaker to R and left speaker to L, coloured (marked) wire to + and black (unmarked) wire to -. 12 Fully insert the stripped portion of the speaker wire into the terminal as shown. Notes: F

10、or optimal sound performance, use the supplied speakers. Do not connect more than one speaker to any one pair of +/- speaker terminals. Do not connect speakers with an impedance lower than the speakers supplied. Please refer to the SPECIFICATIONS section of this manual. Optional connection The optio

11、nal equipment and connecting cords are not supplied. Refer to the operating instructions of the connected equipment for details. Connecting other equipment to your system Use a cinch cable to connect AUX/CDR IN to the analogue audio out terminals of an external equipment (TV, VCR, Laser Disc player,

12、 DVD player or CD Recorder). Note: If you are connecting equipment with a mono output (a single audio out terminal), connect it to the AUX/CDR IN left terminal. Alternatively, you can use a “single to double” cinch cable (the output sound still remain mono). Inserting batteries into the remote contr

13、ol Insert two batteries type R03 or AAA (not supplied) into the remote control with the correct polarity as indicated by the + and - symbols inside the battery compartment. CAUTION! Remove batteries if they are exhausted or will not be used for a long time. Do not use old and new or different types

14、of batteries in combination. Batteries contain chemical substances, so they should be disposed off properly. PREPARATIONS AND CONTROLS 1-8 1 2 3 4 5 6 7 8 9 0 ! # $ % & * ( ) STANDBY-ON SLEEP DIGITAL SOUND DISPLAY BANDTAPE 1 2VIDEO TUNERTAPEAUX MASTER VOLUME STOPCLEAR / DEMO STOP SEARCHTUNING SEARCH

15、TUNING PLAY PAUSE PRESETNEXT/PRESETPREV/ PROGRAMCLOCK/ TIMER DIM MODE 24 5 DSCDBBMUTE 2 CD 1/2/3 REPEATSHUFFLESLEEP TUNERTAPE 1/2AUX/CDR MUTENEWS/TA VOL 8 * 2 0 4 Controls Controls on the system and remote control 1STANDBY ON B to switch the system on or to standby mode. 2SLEEP to activate/deactivat

16、e or set the sleep timer. 3DIGITAL SOUND DISPLAY the active DSC will be lighted. 4TUNER (BAND) to select waveband : FM or MW. TAPE (TAPE 12) to select tape mode. AUX (VIDEO) (AUX/CDR) to select the input for an additional appliance. 5CD 1 / CD 2 / CD 3 (CD 1/2/3) to select disc tray 1, 2 or 3. 6OPEN

17、/CLOSE to open or close the disc tray. 7DISC CHANGE to change disc(s). 8DIGITAL SOUND CONTROL (DSC) to activate the jog control for DSC selection. 9Jog control to select the desired sound effect for the selected sound feature. DSC .JAZZ, ROCK, TECHNO or OPTIMAL. DBB .DBB 1, DBB 2, DBB 3 or DBB OFF.

18、0DYNAMIC BASS BOOST (DBB) to activate the jog control for DBB selection. !PROGRAM for CD .to programme disc tracks. for Tuner .to programme preset radio stations. for Clock .to select 12- or 24-hour clock mode. for Timer.to select CD programme mode as the wake up source. Tape deck 1 operation .to st

19、art recording. .to start playback. / .to rewind or fast forward. 70 .to stop playback/recording or to open the tape door. .to interrupt playback or recording. #Tape deck 2 operation .to start playback. / .to rewind or fast forward. 70 .to stop playback or to open the tape door. .to interrupt playbac

20、k. $CLOCK/TIMER to view the clock, set the clock or set the timer. %DIM MODE to select different brightness for the display screen : DIM 1, DIM 2, DIM 3 or DIM OFF. PREPARATIONS AND CONTROLS 1-9 Controls Mode Selection PLAYPAUSE for CD .to start or interrupt playback. for Plug & Play(on the system o

21、nly) to initiate and start plug & play mode. SEARCHTUNING for CD .to search backward/forward. for Tuner .to tune to a lower or higher radio frequency. for Clock .(on the system only) to set the hour. STOPCLEAR / DEMO STOP for CD .to stop playback or to clear a programme. for Tuner .(on the system on

22、ly) to stop programming or to erase a selected preset. for Demo.(on the system only) to activate/ deactivate the demonstration. for Clock .(on the system only) to exit clock setting or cancel timer. for Plug & Play(on the system only) to exit plug & play mode. PREV / PRESET 4 NEXT / PRESET3 for CD .

23、to skip to the beginning of the current, previous, or next track. for Tuner .to select a preset radio station. for Clock .(on the system only) to set the minute. &n to connect headphones. *MASTER VOLUME (VOL +/-) to increase or decrease the volume. (Display screen to view the current status of the s

24、ystem. )Disc tray REPEAT to playback track(s)/disc(s)/programme repeatedly. SHUFFLE to playback all available discs and their tracks/ programme in random order. MUTE to interrupt or resume sound reproduction. B to switch the system to standby mode. Notes for remote control: First, select the source

25、you wish to control by pressing one of the source select keys on the remote control (CD 1/2/3 or TUNER, for example). Then select the desired function (, , for example). MAINTENANCE AND TROUBLESHOOTING 1-10 Troubleshooting WARNING Under no circumstances should you try to repair the system yourself,

26、as this will invalidate the warranty. Do not open the system as there is a risk of electric shock. If a fault occurs, first check the points listed below before taking the system for repair. If you are unable to solve a problem by following these hints, consult your dealer or service centre. Problem

27、Solution CD OPERATION “NO DISC” is displayed.Insert a disc. Check if the disc is inserted upside down. Wait until the moisture condensation at the lens has cleared. Replace or clean the disc, see “Maintenance”. “DISC NOT FINALIZED” is displayed.Use a finalised CD-RW or CD-R. Maintenance Cleaning the

28、 Cabinet Use a soft cloth slightly moistened with a mild detergent solution. Do not use a solution containing alcohol, spirits, ammonia or abrasives. Cleaning Discs When a disc becomes dirty, clean it with a cleaning cloth. Wipe the disc from the centre out. Do not wipe in circular motion. Do not us

29、e solvents such as benzene, thinner, commercially available cleaners, or antistatic spray intended for analogue records. Cleaning the disc lens After prolonged use, dirt or dust may accumulate at the disc lens. To ensure good playback quality, clean the disc lens with Philips CD Lens Cleaner or any

30、commercially available cleaner. Follow the instructions supplied with cleaner. Cleaning the Heads and the Tape Paths To ensure good recording and playback quality, clean the heads A and B, the capstan(s) C, and pressure roller(s) D after every 50 hours of tape operation. Use a cotton swab slightly m

31、oistened with cleaning fluid or alcohol. You also can clean the heads by playing a cleaning tape once. Demagnetising the heads Use a demagnetising tape available at your dealer. Troubleshooting RADIO RECEPTION Radio reception is poor.If the signal is too weak, adjust the antenna or connect an extern

32、al antenna for better reception. Increase the distance between the Mini HiFi System and your TV or VCR. TAPE OPERATION/RECORDING Recording or playback cannot be made.Clean deck parts, see “Maintenance”. Use only NORMAL (IEC I) tape. Apply a piece of adhesive tape over the missing tab space. GENERAL

33、The system does not react when buttonsRemove and reconnect the AC power plug and are pressed.switch on the system again. Sound cannot be heard or is of poorAdjust the volume. quality.Disconnect the headphones. Check that the speakers are connected correctly. Check if the stripped speaker wire is cla

34、mped. The left and right sound outputs areCheck the speaker connections and location. reversed. The remote control does not functionSelect the source (CD 1/2/3 or TUNER, for properly.example) before pressing the function button (,). Reduce the distance between the remote control and the system. Inse

35、rt the batteries with their polarities (+/ signs) aligned as indicated. Replace the batteries. Point the remote control directly towards the IR sensor . The timer is not working.Set the clock correctly. Press and hold CLOCK/TIMER to switch on the timer. If recording or tape dubbing is in progress, s

36、top recording. The Clock/Timer setting is erased.Power has been interrupted or the power cord has been disconnected. Reset the clock/timer. The system displays featuresPress and hold on the system to switch off automatically.the demonstration. 2-12-1 DISMANTLING INSTRUCTIONS 1) Loosen the 4 screws,

37、slide Cover top (pos 253) towards the rear and remove it upwards. 2) Loosen 3 screws slide the Panel right (pos 252) towards the rear and remove it outwards. Do likewise for the Panel left (pos 251). 3) Push the gear slowly towards the front as shown in figure 2 until the CDC tray starts to move out

38、 of the Front Cabinet (pos 101). The CDC tray is now disengage and can be pulled out completely. Dismantling the 3CDC Module 4) Remove the Cover Tray (pos 105) as shown in figure 2. 5) Loosen 4 screws A to remove the CDC Module (pos 1104) as shown in figure 2. A A A Turn the Gear towards the Front t

39、ill the CDC Tray starts to open Figure 2 Figure 1 Dismantling of the Volume & Jog Rotary knobs 1) Cut a piece of packaging tape approximately 5cm width by 12cm length and tape its narrow side on to the top and bottom side of the Volume knob (pos 132) as shown in figure 3. Dismantling of the Front Pa

40、nel assembly 1) Loosen 2 screws below the Front Panel (pos 101) mounting it to the Bottom plate (pos 227). 2) Release the 2 catches on the sides of the Front Panel to separate it from the Bottom plate. 3) Remove the Volume and Jog Rotary knob if the Front board needs to be dismantled. For Karaoke ve

41、rsions, the Karaoke knob (pos 133) also need to be removed. 4) Loosen 8 screws B to remove the Front board as shown in Figure 5. 5) Loosen 6 screws C and eject both cassette doors to remove the Tape mechanism (pos 1103) as shown in figure 6. Note: The Cassette door can be removed only after the remo

42、val of the Tape mechanism and buttons. 2) Place a small screw driver in between the tape & knob (see figure 3) to give more leverage in pulling out the knob as shown in figure 4. 3) Do likewise for the Jog Rotary knob (pos 131). You may have to rotate the knob to provide the most exposed area during

43、 application of the packaging tape. Figure 4 Figure 3 Figure 6 Figure 5 2-22-2 Service pos A Service pos B Note: After re-assembly, it is very important to ensure all wires are routed properly to ensure that they do not touch/obstruct all moving parts. The 3CDC Module can be complete detached while

44、repair the other portion of the set. Dismantling of the Bottom & Rear Panel assembly 1) Loosen 5 screws D mounting the Combi board to the Rear Panel (pos 254) as shown in figure 9. 2) Loosen 3 screws E and release the 2 catches on the sides of the Rear Panel to separate it from the Bottom plate (pos

45、 227). 3) Loosen 4 screws G to remove the Mains Transformer. 5) Loosen 2 screws F to remove the Combi Board. Dismantling of the Cassette door Lenses 1) Loosen the Lens Cassette Strip Left Top (pos 163) by pushing it towards the inside as indicated in Figure 7 and remove it by using a minus screw dri

46、ver force it out as indicated in Figure 8. 2) Remove the Lens Cassette Left (pos 161) by pushing it towards the inside as indicated in Figure 7. Be careful not to damage or break the catch A. 3) Do likewise for the right Cassette Door Lens (pos 160 and 162). Use a minus screw driver to push the Lens

47、 in the direction shown Catch A Push in this direction Push in this direction Figure 7 Figure 8 Figure 10 Figure 9 3-13-1 Various other Tests Activated withACTIONTEST QEEPROM FORMATLoad default data. Display shows NEW for 1 second. Caution! All presets from the customer will be lost! Disconnect main

48、s cord LEAVE SERVICE TESTPROGRAM R 9 to Exit EEPROM TESTA test pattern will be sent to the EEPROM. PASS is displayed if the uProcessor read back the test pattern correctly, otherwise FAIL will be displayed. Volume Knob or Jog Shuttle knob ROTARY ENCODER TEST Display shows value for 2 seconds. Values increases or decreases in steps of 1 until 0 (Min.) or 40 (Max.) is reached. DBBDEMODEMO will toggle on or off. The