Philips-LX-700-Service-Manual(1) 电路图 维修手册.pdf

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1、GB Service Manual Service ServiceService ServiceService LX700/21S/22S/25S TABLE OF CONTENTS Page Location of PCBs . 1-2 Version Variations fr Reparaturen sind Original-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lapparecchio venga rimesso nelle condizioni originali e che siano util

2、izzati 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. 1-7 IMPORTANT! Before con

3、necting the AC power cord to the wall outlet, ensure that all other connections have been made. Never make or change any connections with the power switched on. The type plate is located at the rear of the system. Connecting the speakers Press up (or down) the speakers jack and fully insert the stri

4、pped portion of the speaker cable into the jack, then re- lease. Speakers Front Left (L) Front Right (R) Center Surround (Rear) Left (L) Surround (Rear) Right (R) Passive Subwoofer black black black black black black white red green blue grey purple - ?+ Connections 12 mm? +?+?+?+? AC? ? MA?IN? S ?

5、? +?+?+?+? NEOD? YMIUM RIBBON ? TWEETER? HI-FREOUENC? Y? NEOD? YMIUM RIBBON ? TWEETER? H? I-FREOUENCY? S?S? U?U? B?B?.? S?S? U?U? B?B?.? NEOD? YMIUM RIBBON ? TWEETER? HI-FREOUENCY? NEOD? YMIUM RIBBON ? TWEETER? HI-FREOUENCY? Before connecting the speakers: Mount the speakers onto the mini speaker st

6、ands as shown in the illustration. Remove the protective cover only after the connection and installation of speakers are completed. Connect the supplied speaker system using the supplied speaker cable by matching the colors of the jacks and speaker cable. Notes: Check the speaker cables are correct

7、ly connected. Improper connections may damage the system due to short-circuit. For optimal sound performance, use the supplied speakers. Do not connect more than one speaker to any one pair of +/- speaker jacks. Do not connect speakers with impedance lower than the speakers supplied. Please refer to

8、 the SPECIFICATION section of this manual. 1-8 Connections Connecting from a DVD and additional components To listen to playback from your DVD or SACD player. Option 1 6 CHANNEL-DVD/SACD IN Use the supplied audio cables to connect the 6 CHANNEL- DVD/SACD IN jacks to the corresponding Multichannel AU

9、DIO OUT on your DVD or SACD player. About 6 CHANNEL-DVD/SACD IN The6 CHANNEL-DVD/SACD INcan be used to connect from a device with a built-in multichannel decoder (e.g. Dolby, Digital, DTS, etc) and 6-channel output, i.e. a high end DVD/SACD player When using the 6 CHANNEL-DVD/SACD IN audio input, th

10、e Receiver works as a multichannel amplifier. The source reproduces surround sound and sends it to the Receiver divided into the necessary channels. Therefore the SURROUND button has no effect since the provided signal is already multichannel. From a source which is connected to the 6 CHANNEL- DVD/S

11、ACD IN, audio input cannot be recorded. OR Option 2 DIGITAL IN Connect the OPTICAL or COAXIAL jack to the DIGITAL OUT jack on the DVD or SACD player. You will need to set the Receivers digital input to the jack you connected to (refer to “System Setup - Digital Input”) Connecting additional componen

12、ts For listening to the playback from other audio/ visual devices through the Reveiver Connect the AUDIO IN (TV/AV or AUX) jacks to the AUDIO OUT jacks on the TV, VCR or other audio/visual device. AND/OR Connect the DIGITAL IN ( OPTICAL or COAXIAL) jack to the DIGITAL OUT jack on other audio/ visual

13、 device. You will need to set the Receivers digital input to the jack you connected to ( refer to “System Setup - Digital Input”). For recording to an external recording device Connect the AUDIO OUT jacks to the AUDIO IN jacks on an analog recording device. AND/OR Connect the DIGITAL OUT jack to the

14、 DIGITAL IN jack on a digital recording device. You can only make a digital recording from digital signal received from the DIGITAL IN jack on this receiver. Connecting antennas MW Indoor Loop Antenna Connect the supplied MW loop antenna to the MW jack. Position the loop antenna to receive the clear

15、est sound. FM Indoor Antenna Connect the supplied FM antenna to the FM jack. Move the antenna in various directions until the clearest signal is received. Note: Keep the antenna as far away as possible from the TV, VCR or any radiation source to prevent unwanted noise. FM Outdoor Antenna For better

16、FM reception, use a 75 ohm coaxial cable (not supplied) to connect the system to an outdoor FM antenna as shown. AM? (MW)? (MW)? AM? Fix the cla? w? to the slot? 1-9 ConnectionsPreparations Notes: If the audio format of the digital input does not match the capabilities of your Receiver, it will prod

17、uce a strong distorted sound or no sound at all Always refer to the instruction manual of the connedted equipment to make an optimal connection Recording from the digital output It is possible to connect a digital recorder to the digital output of the receiver. In this way, all signals coming from t

18、he digital inputs can be recorded directly on the connected audio recorder. The receiver can be used to record digital sound audio signal from DVD to CD-R. Notes: Dolby Digital, DTS or MPEG signal are not possible to record from this receiver. Digital recording is not possible when the digital sourc

19、e material is copy-protected. Inserting batteries into the remote control Open the battery compartment. Place the batteries in the compartment with the correct polarity as indicated by + and - symbols. Close the cover. CAUTION! Remove batteries if they are exhausted or will not be used for a long ti

20、me. Do not use old and new or different types of batteries in combination. Batteries contain chemical substances, so they should be disposed off properly. Setting up the surround sound system You must connect all the speakers and set up the system properly in order to enjoy the Digital Cinema experi

21、ence at home (refer to “Connections - Connecting the speakers”). You will have the feeling of being in the middle of the action because sound is coming from everywhere around you. The subwoofer can enhance the bass performance of your system dramatically. IMPORTANT! Please sit at your usual listenin

22、g position in order to set up the speaker balance correctly. Placing the speakers To obtain the best surround effect, place the speaker as follows. 1Place the front left and right speakers at equal distances from the TV and at an angle of approximately 45 degrees from the listening position. 2Place

23、the center speaker above or below the TV, so the center channels sound is localized. 3Place the surround speakers at normal listening ear level facing each other or mounted on the wall. 4Place the subwoofer on the floor near to the TV. Notes: To avoid magnetic interference, do not position the front

24、 speakers too close to your TV. If the rear surround speakers are installed farther away from the listening position than the front and center speakers, it will weaken the surround effect. All speakers should be securely installed to prevent accidents and improve sound quality. Switching on the syst

25、em 1After completing all the connections, connect the AC power cord of the Receiver to the wall outlet. The system will go into STANDBY mode. 2Press STANDBY ON to switch on the last selected source. 3Rotate the SOURCE button or press TV/AV,DISC , TUNER or AUX on the remote control to select the inpu

26、t source. The selected source will be displayed. 1-10 C? 578906 1324 1SURROUND to select multichannel surround(Dolby Digital, DTS, Dolby Pro Logic or Dolby Pro Logic II) or stereo sound effect. 2TUNING S T to select the tuner frequency. 3BASS to select bass adjustment mode. 4TREBLE to select treble

27、adjustment mode. 5STANDBY ON y to switch between power on and standby mode. 6DISPLAY SCREEN shows the status of the system. 7 PROGRAM in Tuner mode, to program MW/FM stations. 8 SOURCE to select the desired source or external input source (TV/AV, DISC DI, DISC 6CH, TUNER or AUX). 9VOLUME to adjust t

28、he master volume. 0 PHONE to connect headphones. Functional Overview Front and Rear panels 1DIGITAL OUT connect to the digital inputs of an external audio equipment. is active only when receiving input from DIGITAL IN (Coaxial or Optical). 2WOOFER LINE OUT connect to an active subwoofer (optional).

29、3SPEAKERS connect to the front,center, surround and subwoofer speakers. 4DVD/SACD IN connect from the 6 channel output of a DVD or SACD player. 5AC POWER CORD connect to a standard AC outlet. Caution: Do not touch the inner pins of the jacks on the rear panel. Electrostatic discharge may cause perma

30、nent damage to the unit. 6MW / FM connect to the MW loop antenna or FM antenna 7DIGITAL IN connect from audio equipment with digital (Coaxial or Optical) audio output. 8AUDIO IN (TV/AV, AUX) connect from the analog audio outputs of a TV or other equipment. 9AUDIO OUT connect to the analog audio inpu

31、ts of an external recording device or amplifier. +?+?+?+? AC? ? MAIN? S ? ? .? .? 78 96 12345 Notes: The keys in the following list operate exclusively for this Receiver only. 1SOURCE to select the desired source (TV/AV, DISC, TUNER or AUX). 41 2 Press 1 /2 to select a preset radio station. 5S / T i

32、n Tuner mode, to tune to a lower or higher radio frequency. 8SURROUND to select multichannel surround (Dolby Digital, DTS or Dolby ProLogic II) or stereo sound effect. 9SOUND to select the various soundfield effects:CONCERT, Remote control Functional Overview 1 2 3 4 5 6 7 8 9 4 5 % $ # 0 ! ( ) * 3.

33、3V Capable 2 mA Slew-rate control Output; 19SCLII2C Serial Clock5V Tolerant TTL Schmitt Trigger Input Buffer 1 2 3 5 6 4 7 8 9 10 27 11 28 29 30 31 32 59 58 57 56545553 52 51 50 49 43 42 41 39 38 40 48 47 46 44 45 SDI_78 VDD GND GND MVO VDD3 BICKI LRCKI SDI_12 SDI_56 SDI_34 VDDA GNDA VDD3 CKOUT GND

34、VDD VDD3 OUT8_B OUT8_A OUT7_B OUT7_A VDD3 SDO_34 SDO_12 LRCKO VDD BICKO GND VDD3 EAPD OUT1_A OUT1_B OUT3_A OUT3_B OUT4_A OUT5_A OUT5_B OUT4_B OUT2_A OUT2_B VDD VDD3 GND D02AU1356 22 23 24 25 26 60 GND 61 VDD 62 SDO_56 63 SDO_78 64 PWDNSA SDA SCL XTI FILTER_PLL 17 18 19 20 21 37 36 34 33 35 VDD GND O

35、UT6_A OUT6_B VDD3 12 13 14 15 16PLLB RESET VDD VDD3 GND PIN FUNCTION PIN CONNECTION (Top view) DIGITAL AUDIO PROCESSOR STA308 DIGITAL AUDIO PROCESSOR STA308 8-38-3 PINNAMETYPEDESCRIPTIONPAD TYPE 20XTIICrystal Oscillator Input (Clock Input)3.3V Tolerant TTL Schmitt Trigger Input Buffer 21FILTER_PLLPL

36、L FilterAnalog Pad 22VDDAPLL 2.5V Supply2.5V Analog Power Supply Voltage 23GNDAPLL GroundAnalog Ground 25CKOUTOClock Output3.3V Capable TTL Tristate 4mA Output Buffer 29OUT8_BOPWM Channel 8 Output B3.3V Capable TTL 2mA Output Buffer 30OUT8_AOPWM Channel 8 Output A3.3V Capable TTL 2mA Output Buffer 3

37、1OUT7_BOPWM Channel 7 Output B3.3V Capable TTL 2mA Output Buffer 32OUT7_AOPWM Channel 7 Output A3.3V Capable TTL 2mA Output Buffer 33OUT6_BOPWM Channel 6 Output B3.3V Capable TTL 2mA Output Buffer 34OUT6_AOPWM Channel 6 Output A3.3V Capable TTL 2mA Output Buffer 38OUT5_BOPWM Channel 5 Output B3.3V C

38、apable TTL 2mA Output Buffer 39OUT5_AOPWM Channel 5 Output A3.3V Capable TTL 2mA Output Buffer 40OUT4_BOPWM Channel 4 Output B3.3V Capable TTL 2mA Output Buffer 41OUT4_AOPWM Channel 4 Output A3.3V Capable TTL 2mA Output Buffer 42OUT3_BOPWM Channel 3 Output B3.3V Capable TTL 2mA Output Buffer 43OUT3_

39、AOPWM Channel 3 Output A3.3V Capable TTL 2mA Output Buffer 47OUT2_BOPWM Channel 2 Output B3.3V Capable TTL 2mA Output Buffer 48OUT2_AOPWM Channel 2 Output A3.3V Capable TTL 2mA Output Buffer 49OUT1_BOPWM Channel 1 Output B3.3V Capable TTL 2mA Output Buffer 50OUT1_AOPWM Channel 1 Output A3.3V Capable

40、 TTL 2mA Output Buffer 51EAPDOExternal Amplifier Power Down3.3V Capable TTL 2mA Output Buffer 55BICKOOOutput I2S Serial Clock3.3V Capable TTL 2mA Output Buffer 56LRCKOOOutput I2S Left/Right Clock3.3V Capable TTL 2mA Output Buffer 57SDO_12OOutput I2S Serial Data Channels 1 & 23.3V Capable TTL 2mA Out

41、put Buffer 58SDO_34OOutput I2S Serial Data Channels 3 & 43.3V Capable TTL 2mA Output Buffer 62SDO_56OOutput I2S Serial Data Channels 5 & 63.3V Capable TTL 2mA Output Buffer 63SDO_78OOutput I2S Serial Data Channels 7 & 83.3V Capable TTL 2mA Output Buffer 64PWDNIDevice Powerdown5V Tolerant TTL Schmitt

42、 Trigger Input Buffer PIN FUNCTION (continued) DIGITAL AUDIO PROCESSOR STA308 OCTAL BUFFER / LINE DRIVER 74HCT244 8-48-4 Y-Decoder I/O Buffers and Data Latches 398 ILL B1.2 Address Buffers & Latches X-Decoder DQ7 - DQ0 Memory Address OE# CE# WE# SuperFlash Memory Control Logic FUNCTIONAL BLOCK DIAGR

43、AM PIN ASSIGNMENTS FOR 32-PIN PDIP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32-pin PDIP Top View 398 ILL F02a.2 NC A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS SST39SF010A NC A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS SST39SF020A A18 A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS

44、SST39SF040SST39SF010A 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 VDD WE# NC A14 A13 A8 A9 A11 OE# A10 CE# DQ7 DQ6 DQ5 DQ4 DQ3 SST39SF020ASST39SF040 VDD WE# A17 A14 A13 A8 A9 A11 OE# A10 CE# DQ7 DQ6 DQ5 DQ4 DQ3 VDD WE# A17 A14 A13 A8 A9 A11 OE# A10 CE# DQ7 DQ6 DQ5 DQ4 DQ3 PIN DESCRIPTION SymbolP

45、in NameFunctions AMS1-A0Address InputsTo provide memory addresses. During Sector-Erase AMS-A12 address lines will select the sector. DQ7-DQ0Data Input/outputTo output data during Read cycles and receive input data during Write cycles. Data is internally latched during a Write cycle. The outputs are

46、in tri-state when OE# or CE# is high. CE#Chip EnableTo activate the device when CE# is low. OE#Output EnableTo gate the data output buffers. WE#Write EnableTo control the Write operations. VDDPower SupplyTo provide 5.0V supply (4.5-5.5V) VSSGround NCNo ConnectionUnconnected pins. 1. AMS = Most signi

47、ficant address AMS = A16 for SST39SF010A, A17 for SST39SF020A, and A18 for SST39SF040 MULTI-PURPOSE FLASH SST39SF020A OCTAL BUFFER / LINE DRIVER 74HCT244 8-58-5 8-6 8-6 CIRCUIT DIAGRAM (TOP LEFT) A 1234 1234 B C D A B C D C10D1 C1001A1 C1002A1 C1003A1 C1004A1 C1005A1 C1006A1 C1007A1 C1022B4 C1023B4

48、C1024B4 C1031C3 C1032C3 C1033C3 C1036C4 C1100B2 C1101B2 C1102B2 C1103B2 C1104B2 C1105B2 C1106D2 C1109D2 C1110D2 C1111D2 C1112D2 C1115D2 C1116D2 C1120A4 C2001A4 C3020D1 C3031C1 C3032C1 C3033C1 C3048D1 C3049D1 C3111D1 C3112D1 C3113D1 C3114D1 C3115C1 C3116D1 C3117D1 C3118D1 C9002C2 C9003B1 C9004B1 C900

49、5B2 C9006B2 C9007C2 C9008C2 C9009C2 C9010C2 C9011C2 C9012B2 C9013B2 C9014B2 C9022C1 C9023C1 C9031A1 C9032A1 C9033A1 C9034A2 C9035A2 C9036B1 C9037B1 C9038B2 C9039B2 C9040B2 CN203A4 CN904B1 CN905C2 CN906A4 CN1001C4 D1001B4 D1003A4 D1004A4 FB9001B2 FB9002B2 FB9003B2 FB9004B2 IC1002B4 IC1004-A A4 IC1004-B A4 IC1004-F C2 IC1011D4 IC1012B2 IC1013D2 IC1015D2 ICIC3002 D1 IC9001B1 IC9003B2 IC9004B2 JK302C1 JK304-AD1 JK305-AD1 JK305-BD1 L1004D2 L9031A1 L9032B1 Q1002A4 Q3010D1 Q3011D1 Q3012C1 Q9031A1 Q9032A1 Q9033