Philips-AZT-9500-AZT-9505-Service-Manual(1) 电路图 维修手册.pdf

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1、PRODUCT FAMILY FOCUS TUNER Technical specification .1-1.1-2 Features .1-2 Connections and controls.1-3 Accessories .1-3 Instruction For Use (excerpt).1-4.1-7 Safety 1. Remove the bottom screws(6x) 2. Open the CD-door 3. Lift the top-cabinet and put it backwards on the table 4. Supply the unit via th

2、e external DC-socket 5. Take care that the door switch is closed during measurements DISMANTLING THE CD-DOOR To dismantle the CD-door proceed as follows: 1. Dismantle bottom and printed board/drive assembly 2. Disconnect membrance keyboard (flex-foil connector on copperside of printed board 3. Bend

3、the cabinet rightwards downwards as indicated in the picture above Remark:Do not use screwdrivers or tools like that. Sharp edges could damage hinge or cabinet part. 2 - 2 SERVICE TOOLS Audio signal disc SBC429 4822 397 30184 Playability test disc SBC444 4822 397 30245 Test disc 5 (disc without erro

4、rs ) + Test disc 5A(disc with dropout errors black spots and fingerprints) SBC426/ SBC426A 4822 397 30096 ESD PROTECTION EQUIPMENT Anti-static table mat large 1200 x650 x1.25mm 4822 466 10953 small 600 x650 x1.25mm 4822 466 10958 Anti-static wristband 4822 395 10223 Connection box (3press stud conne

5、ctions,1M) 4822 320 11307 Extendible cable (2m,2M ,to connect wristband to connection box) 4822 320 11305 Connecting cable (3m,2M ,to connect table mat to connection box) 4822 320 11306 Earth cable (1M , to connect any product to mat or to connection box) 4822 320 11308 KIT ESD3(combining all 6 prio

6、r products - small table mat) 4822 310 10671 Wristband tester 4822 344 13999 HANDLING CHIP COMPONENTS 3 - 1 PIN DESCRIPTION OF INTEGRATED CIRCUITS TZA1024 HF-PREAMPLIFIER AND LASER SUPPLY CIRCUIT PinNameDirectionDescription 1LDHF-preamp CD-drivecurrent output to laser diode 2VCCL+2.6Vlaser supply vo

7、ltage 3CFIL HF-preampexternal filter capacitor 4MONCD-drive HF-preamplaser monitor diode input 5DINCD-drive HF-preampcentral diode input 6GNDGNDground 7PWRONCD10 HF-preamppower-on select input 8CMFB+2.6V / 2common mode feedback voltage input 9RFFB HF-preampexternal RF feedback resistor 10RFEQOHF-pre

8、amp RF amplifier output 11CDRWCD10 HF-preampgain select input for CDDA/CDRW 12EQSELCD10 HF-preampequalizer/speed select input 13VCC2+2.6Vsupply voltage 14RGADJGNDexternal laser supply gain adjust resistor SC111259FTA SERVO DRIVER this pin should be tied low 26CL16CD10 DSP16.9344 MHz system clock out

9、put 27DATACD10 NPC or CD10 DSPserial data output (3-state) 28WCLKCD10 NPC or CD10 DSPword clock output (3-state) 29SCLKCD10 NPC or CD10 DSPserial bit clock output (3-state) 30EFCD10 NPCC2 error flag output (3-state) 31TEST2GNDtest control input 2; this pin should be tied low 32KILLCD10 kill output (

10、programmable; open-drain) 33VSSD1GNDdigital ground 2 34V2/V3CD10 NPCversatile I/O: input versatile pin 2 or output versatile pin 3 (open-drain) 35WCLINPC CD10 or DSP CD10word clock input (for data loopback to DAC) 36SDINPC CD10 or DSP CD10serial data input (for data loopback to DAC) 37SCLINPC CD10 o

11、r DSP CD10serial bit clock input (for data loopback to DAC) 38RESETnP CD10power-on reset input (active low) 39SDAP CD10microcontroller interface data I/O line (open-drain output) 40SCLP CD10microcontroller interface clock line input 41RABP CD10microcontroller interface R/W and load control line inpu

12、t (4-wire bus mode) 42SILDP CD10microcontroller interface R/W and load control line input (4-wire bus mode) 43STATUSCD10 servo interrupt request line/decoder status register output (open-drain) 44TEST3GNDtest control input 3; this pin should be tied low 45RCK CD10subcode clock input 46SUBCD10 P-to-W

13、 subcode bits output (3-state) 47SFSYCD10 Psubcode frame sync output (3-state) 48SBSYCD10 NPCsubcode block sync output (3-state) 49CL11/4CD10 DSP11.2896 MHz or 4.2336 MHz (for microcontroller) clock output 50VSSD2GNDdigital ground 3 51DOBMCD10 bi-phase mark output (externally buffered; 3-state) 52VD

14、DD1P+2.6Vdigital supply voltage 2 for periphery 53CFLGCD10 correction flag output (open-drain) 54RACD10 servo driverradial actuator output 55FOCD10 servo driverfocus actuator output 56SLCD10 servo driverslide control output 57VDDD2C+2.6Vdigital supply voltage 3 for core 58VSSD3GNDdigital ground 4 59

15、MOTO1CD10 servo drivermotor output 1; versatile (3-state) 60MOTO2CD10 motor output 2; versatile (3-state) 61V4CD10 HF-preampversatile output pin 4 62V5CD10 HF-preampversatile output pin 5 63V1innerswitch CD10versatile input pin 1 64LDONCD10 HF-preamplaser drive on output (open-drain) 3 - 3 SM5907AF

16、COMPRESSION-TYPE ANTI-SHOCK MEMORY CONTROLLER NPC PinNameDirectionDescription 1VDD2+2.6Vsupply voltage 2UC1NPC P interface extension I/O line 1 3UC2NPC P interface extension I/O line 2 4UC3NPC P interface extension I/O line 3 5UC4NPC P interface extension I/O line 4 6UC5NPC P interface extension I/O

17、 line 5 7NACS3NPC DRAMDRAM2 CAS control 8TEST2+2.6Vtest pin 9CLKCD10 NPC16.9344MHz clock input 10VSSGNDground 11YSRDATACD10 NPCaudio serial data input 12YLRCKCD10 NPCaudio serial L/R clock input 13YSCKCD10 NPCaudio serial bit clock input 14ZSCKNPC CD10audio serial bit clock output 15ZLRCKNPC CD10aud

18、io serial L/R clock output 16ZSRDATANPC CD10audio serial data output 17YFLAGCD10 NPCsignal processor IC RAM overflow flag 18YFCLKGNDcrystal-controlled frame clock input 19YBLKCKCD10 NPCsubcode block clock signal output 20RESETP NPCsystem reset input (active low) 21ZSENSENPC P interface status output

19、 22VDD1+2.6Vsupply voltage 23YDMUTE NPCforced mute input 24YMLDP NPCP interface latch clock input 25YMDATAP NPCP interface serial data input 26YMCLKP NPCP interface shift clock input 27A10/NCAS2NPC DRAMDRAM OE control output (active low) 28CASNPC DRAMDRAM CAS control output (active low) 29D2NPC DRAM

20、DRAM data input/output 2 30D3NPC DRAMDRAM data input/output 3 31D0NPC DRAMDRAM data input/output 0 32D1NPC DRAMDRAM data input/output 1 33WENPC DRAMDRAM WE control output (active low) 34RASNPC DRAMDRAM RAS control output (active low) 35A9NPC DRAMDRAM address output 9 36A8NPC DRAMDRAM address output

21、8 37A7NPC DRAMDRAM address output 7 38A6NPC DRAMDRAM address output 6 39A5NPC DRAMDRAM address output 5 40A4NPC DRAMDRAM address output 4 41A0NPC DRAMDRAM address output 0 42A1NPC DRAMDRAM address output 1 43A2NPC DRAMDRAM address output 2 44A3NPC DRAMDRAM address output 3 TA2120FN Stereo Headphone

22、Amplifier PinNameDirectionDescription 1DBB NF headphone-ampNF of DBB amplifier 2ADD OUTheadphone-amp output of ADD amplifier 3RF IN headphone-ampterminal for ripple filter circuit 4PWC headphone-ampcenter amplifier on/off switch (open = on) 5VCC+HP (+A)positive supply voltage 6Bheadphone-amp HP-sock

23、etoutput of power amplifier 7Cheadphone-amp HP-socketoutput of center amplifier 8Aheadphone-amp HP-socketoutput of power amplifier 9GNDGNDground of power amplifier 10MIX OUTheadphone-amp output of power amplifier (mixed) 11ALC IN headphone-ampinput terminal for ALC detector circuit 12ALC DET headpho

24、ne-ampsmoothing for ALC detection (GND = ALC off, open = ALC ON) 13ATT headphone-amppower amplifier gain switch (open/VCC = ATT off, GND = ATT on) 14IN A headphone-ampinput of power amplifier 15IN B headphone-ampinput of power amplifier 16GNDGNDground of input stage in power amplifier 17BEEP INP hea

25、dphone-ampinput terminal for beep sound 18MUTE TC headphone-ampterminal for mute smoothing 19MUTE SWP headphone-amppower mute switch (GND/open = mute off, VCC = mute on) 20POWER headphone-amppower switch (VCC = power on, GND/open = power off) 21BIASheadphone-amp BIAS voltage 22BIAS IN headphone-ampf

26、ilter terminal for BIAS circuit 23DBB SWP headphone-ampDBB on/off switch (open/VCC = DBB on, GND = DBB off) 24DBB OUTheadphone-amp Output of DBB amplifier (terminal for filter) 3 - 4 PLAY pressed ? P sends command to CD10: “move slide inside” P accelerates disc motor for 200ms inner switch closed wi

27、thin 6s ? P sends command to CD10: “move slide outside” P sends commands to CD10: “slide servo off” P sends commands to CD10: “laser on” “focus servo on” P resets CD10 that means the higher the number the newer the software. The program is now in the main menu various tests can be entered by pressin

28、g the corresponding buttons (see flow chart on next page or detailed description of available tests below). To exit the service test program press the “STOP“ button or disconnect the set from the power source. 2. DISPLAY TEST Purpose: Check functionality of display and display driver. To enter the d

29、isplay test start the service test program and press the “NEXT” button. The display shows test pattern1. All segments are activated for finding open circuits (see flow chart on next page). To jump to the next pattern press the “NEXT” button. The display shows test pattern2. All alternate pins (2, 4,

30、 .) are activated for finding short circuits (see flow chart on next page). To jump back to test pattern1 press the “NEXT” button, to exit the display test and return to the main menu press the “STOP” button. 3. KEY TEST Purpose: Check operation of keys and cord remote control. To enter the key test

31、 start the service test program and press the “MODE” button. The display shows “-”. Hold key depressed and check corresponding key code on the display. Key codes can be found in table1 (see flow chart on next page). To exit the key test and return to the main menu press the “STOP” button. 4. PLAYBAC

32、K TEST WITH ERROR ANALYSIS Purpose: Analyze errors that occur during playback and search for intermittent failures. To enter the playback test start the service test program and press the “BASS” button. To start the error analysis press the “PLAY” button. Note that the playback test can only be ente

33、red if the CD-door is closed. The set will read the TOC and start playback. As long as the playback is free of errors the display shows track and time information like in normal play-mode. In case of errors corresponding error codes will be displayed. The meaning of these error codes can be found in

34、 table2 (see flow chart on next page). Note: Errors can either be “fatal”or “non fatal”. Fatal errors always stop the playback, non fatal errors only cause a short interruption of the music. Fatal errors are displayed as long as the set is connected to the power source, non fatal errors are displaye

35、d until a new error occurs or a button is pressed. To stop the playback test disconnect the set from the power source. 5. SERVO TEST Purpose: Check door switch, inner switch of CD-drive, movement of slide and acceleration of discmotor. To enter the servo test start the service test program and press

36、 the “PLAY” button. The display shows “Cdxy”. “x” indicates state of door switch; “y” indicates state of inner switch. x,y= “0” means switch is closed; “1” means switch is open. To move slide outside hold the “NEXT” button depressed. To move slide inside hold the “PREV” button depressed. To accelera

37、te the discmotor clockwise hold the “MODE” button depressed. To accelerate the discmotor counter-clockwise hold the “PROG” button depressed. To enter the focus test press the “PLAY” button, to exit the servo test and return to the main menu press the “STOP” button. 6. FOCUS TEST Purpose: Check movem

38、ent of lens and operation of focus servo for CDDA and CDRW discs. The focus servo loop is switched on and the set starts searching the focus (“focus ramping”). As soon as the focus has been found the focus servo loop is closed and the state of the focus is monitored continuously. If the focus is OK

39、the display shows “ Fx”, else “-Fx”. “x” indicates the sensitivity mode. Details can be found in table3 (see flow chart on next page). To toggle between sensitivity modes press the “BASS” button. To move slide outside hold the “NEXT” button depressed. To move slide inside hold the “PREV” button depr

40、essed. To accelerate the discmotor clockwise hold the “MODE” button depressed. To accelerate the discmotor counter-clockwise hold the “PROG” button depressed. In case the focus is OK the discmotor test can be entered by pressing the “PLAY” button, to exit the focus test and return to the main menu p

41、ress the “STOP” button. 7. DISCMOTOR TEST Purpose: Check speed regulation of discmotor. The speed regulation is switched on and the discmotor starts rotating. If the speed reaches 75% of the nom. speed the display shows “ d”, else “-d”. In parallel also the state of the focus is monitored continuous

42、ly (display “ Fx” or “-Fx”). In case the disc speed is OK and the focus is OK the radial test can be entered by pressing the “PLAY” button, to exit the discmotor test and return to the main menu press the “STOP” button. 8. RADIAL TEST Purpose: Check if radial loop locks and an audio signal is audibl

43、e at the headphone output. The radial servo loop is switched on, mute is released and the audio signal is audible. If the system is on track the display shows “ r”, else “-r”. In parallel also the disc speed (display “ d” or “-d”) and the state of the focus (display “ Fx” or “-Fx”) are monitored con

44、tinuously. Note: In case of radial errors the audio output is muted and muting is not released automatically when the systems recovers from the error. “-r” remains on the display. To open mute again press the “NEXT” or “PREV” button. To jump 16 tracks outside press the “NEXT” button. To jump 16 trac

45、ks inside press the “PREV” button. To exit the radial test and return to the main menu press the “STOP” button, to exit the service test program disconnect the set from the power source. Important remark: In radial test mode data to the DRAM is written at 1.2 times the nominal speed, and read from t

46、he DRAM at nominal speed. Because writing is done faster than reading the DRAM gets full after a certain time. In normal play mode the system would now wait until the DRAM is partly emptied again, jump backwards and resume filling at the last written position. However, in radial test mode the jumps

47、would disturb measurements on the radial servo loop. Therefore this function has been disabled and filling restarts immediately from the current position of the pick-up unit. As a result “jumps” are audible during playback. Since the CDRW reflects much less light than an ordinary CDDA, the gain of the HF-amplifier stage and the sensitivity of the ADC inside the Decoder&Digital Servo IC “CD10” must be adapted accordingly. The gain is switched via the CDRW input of the HF-preamplifier. The ADC-sensitivity is set via software parameters (sent from P to “CD10”). In total, there are 4