Philips-DVP-3254-K-Service-Manual(1) 电路图 维修手册.pdf

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1、3139 785 33381 TABLE OF CONTENTS Page Version 1.1 Service Manual DVP3254K DVP3254K/55 Technical Specifications.1-2 . Safety Instruction, Warning 50/60 Hz Power consumption 10 W Power consumption in 1 W Standby mode Specifications are subject to change without prior notice. 1-2 RadioFans.CN 收音机爱 好者资料

2、库 Safety instruction 1. General safety Safety regulations require that during a repair: . Connect the unit to the mains via an isolation transformer. . Replace safety components indicated by the symbol , only by components identical to the original ones. Any other component substitution (other than

3、original type) may increase risk of fire or electrical shock hazard. Safety regulations require that after a repair, you must return the unit in its original condition. Pay, in particular, attention to the following points: . Route the wires/cables correctly, and fix them with the mounted cable clam

4、ps. . Check the insulation of the mains lead for external damage. . Check the electrical DC resistance between the mains plug and the secondary side: 1) Unplug the mains cord, and connect a wire between the two pins of the mains plug. 2) Set the mains switch the “on” position (keep the mains cord un

5、plug). 3) Measure the resistance value between the mains plug and the front panel, controls, and chassis bottom. 4) Repair or correct unit when the resistance measurement is less than 1M?. 5) Verify this, before you return the unit to the customer/user (ref. UL-standard no. 1492). 6) Switch the unit

6、 “off”, and remove the wire between the two pins of the mains plug. 2.Laser safety This unit employs a laser. Only qualified service personnel may remove the cover, or attempt to service this device (due to possible eye injury). Laser device unit Type : Semiconductor laser GaAlAs Wavelength : 650nm

7、(DVD) : 780nm (VCD/CD) Output power : 7mW (DVD) : 10mW (DVD /CD) Beam divergence: 60 degree Note: Use of controls or adjustments or performance of procedure other than those specified herein, may result in hazardous radiation exposure. Avoid direct exposure to beam. Safety instruction, Warning & Not

8、es 1-3 RadioFans.CN 收音机爱 好者资料库 Warning 1.General . All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD). Careless handing during repair can reduce life drastically. Make sure that, during repair, you are at the same potential as the mass of the set by a wristband w

9、ith resistance. Keep components and tools at this same potential. Available ESD protection equipment: 1) Complete kit ESD3 (small tablemat, wristband, connection box, extension cable and earth cable) 4822 310 10671. 2) Wristband tester 4822 344 13999. . Be careful during measurements in the live vol

10、tage section. The primary side of the power supply , including the heat sink, carries live mains voltage when you connect the player to the mains (even when the player is “off”!). It is possible to touch copper tracks and/or components in this unshielded primary area, when you service the player. Se

11、rvice personnel must take precautions to prevent touching this area or components in this area. A “lighting stroke” and a stripe-marked printing on the printed wiring board, indicate the primary side of the power supply. . Never replace modules, or components, while the unit is “on”. 2. Laser . The

12、use of optical instruments with this product, will increase eye hazard. . Only qualified service personnel may remove the cover or attempt to service this device, due to possible eye injury. . Repair handing should take place as much as possible with a disc loaded inside the player. . Text below is

13、placed inside the unit, on the laser cover shield: Notes: Manufactured under licence from Dolby Laboratories. The double-D symbol is trademarks of Dolby Laboratories, Inc. All rights reserved. CAUTION: VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN, AVOID EXPOSURE TO BEAM. 1-4 Lead-Free requirement

14、 for service INDENTIFICATION: Regardless of special logo (not always indicated) One must treat all sets from 1.1.2005 onwards, according next rules. Important note: In fact also products a little older can also be treated in this way as long as you avoid mixing solder-alloys (leaded/ lead-free). So

15、best to always use SAC305 and the higher temperatures belong to this. Due to lead-free technology some rules have to be respected by the workshop during a repair: ? Use only lead-free solder alloy Philips SAC305 with order code 0622 149 00106. If lead-free solder-paste is required, please contact th

16、e manufacturer of your solder-equipment. In general use of solder-paste within workshops should be avoided because paste is not easy to store and to handle. ? Use only adequate solder tools applicable for lead-free solder alloy. The solder tool must be able o To reach at least a solder-temperature o

17、f 400C, o To stabilize the adjusted temperature at the solder-tip o To exchange solder-tips for different applications. ? Adjust your solder tool so that a temperature around 360C 380C is reached and stabilized at the solder joint. Heating-time of the solder-joint should not exceed 4 sec. Avoid temp

18、eratures above 400C otherwise wear-out of tips will rise drastically and flux-fluid will be destroyed. To avoid wear-out of tips switch off un-used equipment, or reduce heat. ? Mix of lead-free solder alloy / parts with leaded solder alloy / parts is possible but PHILIPS recommends strongly to avoid

19、 mixed solder alloy types (leaded and lead-free). If one cannot avoid, clean carefully the solder-joint from old solder alloy and re-solder with new solder alloy (SAC305). ? Use only original spare-parts listed in the Service-Manuals. Not listed standard-material (commodities) has to be purchased at

20、 external companies. ? Special information for BGA-ICs: - always use the 12nc-recognizable soldering temperature profile of the specific BGA (for de-soldering always use highest lead-free temperature profile, in case of doubt) - lead free BGA-ICs will be delivered in so-called dry-packaging (sealed

21、pack including a silica gel pack) to protect the IC against moisture. After opening, dependent of MSL-level seen on indicator-label in the bag, the BGA-IC possibly still has to be baked dry. This will be communicated via AYS-website. Do not re-use BGAs at all. ? For sets produced before 1.1.2005, co

22、ntaining leaded soldering-tin and components, all needed spare-parts will be available till the end of the service-period. For repair of such sets nothing changes. ? On our website: www.atyourservice.ce.P You find more information to: BGA-de-/soldering (+ baking instructions) Heating-profiles of BGA

23、s and other ICs used in Philips-sets You will find this and more technical information within the “magazine”, chapter “workshop news”. For additional questions please contact your local repair-helpdesk. Notes 1-5 Mechanical and Dismantling Instructions Dismantling Instruction The following guideline

24、s show how to dismantle the player. Step1: Remove 5 screws around the Top Cover, and then remove the Top Cover (Figure 1). Figure 1 Step2: If it is necessary to dismantle Loader or Front Panel, the Front door should be removed first. (Figure 2) Note: Make sure to operate gently otherwise the guider

25、would be damaged. Figure 2 2-1 Please kindly note that dismantle the front door assembly carefully to avoid damage tray and the front door. Mechanical and Dismantling Instructions Dismantling Instruction Step3: If the tray cant open in normal way, you can make it through the instruction as below (Fi

26、gure 3). Note: Make sure to operate gently otherwise the guider would be damaged. Figure 3 Step4: Dismantling Front Panel, disconnect the connectors (XP5, XP6, XP7), then release the snaps on the both sides of Front Panel and bottom cabinet , then gently pull the Panel out from the set. (Figure 4 &

27、5) Figure 4 2-2 XP5 Snap 1 Push the guider until the tray out. Make sure to operate gently to avoid damage happening. XP6 XP7 2?3 Mechanical and Dismantling Instructions Dismantling Instruction Figure 5 Step5: Dismantling Loader, disconnect the 3 connectors (XP2, XP3, XP4) aiming in the below figure

28、, and remove 1 screw that connects the loader and the bottom cabinet. (Figure 6) Figure 6 XP3 XP4 XP2 Snap 2 Mechanical and Dismantling Instructions Dismantling Instruction Step6: Dismantling Main Board, first disconnect the connector (XP1), and then remove 4screws. (Figure 7) Figure 7 Step7: Remove

29、 the 4 screws on Power Board to dismantle the Power Board. (Figure 8) Figure 8 2-4 XP1 Software upgrade Preparation to upgrade software 1) Start the CD Burning software and create a new CD project (Data Disc) with the following setting: Label: DVP3XXX (No need the label name) File Name: DVPXXXX_XX.B

30、IN Power on the set and open the tray, then press to check the File Name. Note: It is required capital letter for the File System name. 2) Burn the data onto a blank CDR A. Procedure for software upgrade: 1) Power on the set and insert the prepared Upgrade CDR. 2) The set will starts reading disc &

31、response with the following display TV screen: Upgrade File DETECTED Upgrade? Press Play TO START. 3) Press button to confirm, then screen will display : Files coping UPGRADING 4) The upgraded tray will automatically open when files coping complete, then take out the disc. 5) About 1 minute later, t

32、he trace will automatically close when upgrading complete. B. Read out the software versions to confirm upgrading 1) Power on the set and press button on the remote control. 2) Press button. The software version and other information are display on the TV screen as follows: Version XX.XX.XX.XX (Main

33、 version) SUB-VER XX.XX.XX.XX (software version of application software) 8032 XX.XX.XX.XX Servo XX.XX.XX.XX (software version of Servo) RISC XX.XX.XX.XX DSP XX.XX.XX.XX Region Code X 3-1 Caution: The set must not be power off during upgrading, Otherwise the Main board will be damaged entirely. 4-1 S

34、pindle motor does not move Yes Yes No No No No Yes Check whether “M5V” (+5V) voltage is normal. Correct connection Check the M5V power supply Check/Replace Q5,Q6,Q7,Q8. Check/ Replace U1. Check opu focus 1. Check U1 25pin FOCUS_PWM signals 2.If there are F+, F-, T+ and T- signals output from U2. Che

35、ck/Replace the loader Yes Yes No Go Check whether laser voltage (1.9V for CD & 2.4V for DVD) on L9 and L10 Check the FFC connection between 24P and the loader. 1.Whether voltage on pin 23 of U1 varies between 0 and 3.3V (3.3V for CD and 0V for DVD), 2.Whether peripheral components are eroded or badl

36、y soldered. Trouble shooting chart Motor no move FOCUS_PWN waveform 4-2 The power can not be on or off Go Yes Yes No No The power cant be on or off Yes Repair the power board Check the power supply on the power board is normal. Check/Correct connection Whether the connection to K301 is broken. Corre

37、ct the connection Replace U1. No No Yes Yes Check if the XS301 on the front board to XP5 on the decoder board is in good contact. Whether there is 0V and 3.3V voltage difference on Pin 106 PCON of U1. Trouble shooting chart 4-3 All output voltages on the power board is 0V or deviated. No No No Yes N

38、o U1(PIN 8 - Drain waveform) Replace F1 Replace C1&C2 if D1, D2, D3, D4 are normal. Check/ replace U1. Check whether U1 are eroded. All output voltages on the power board is 0V or deviated Check whether there is 300V on C1 or C2. Check whether 100KHz oscillating signal on Pin6 of U1 Check if +5V and

39、 +12V are short. Check whether the components in the short-circuit voltage are defected or eroded. Yes Yes Yes Yes U1(PIN 3 - RC waveform) Trouble shooting chart Check whether F1 is blown 4-4 Disc cannot be read. No Yes No Yes No Yes Yes No No Yes Disc cannot be read. Check the loaded circuit 1.Chec

40、k voltage on pin 23 of U1 varies between 0 and 3.3V: ?3.3V for CD ?0V for DVD 2.Check whether peripheral components are eroded or defect Check the FFC connection between 24P and the loader. Check U1 and peripheral components Re-solder or replace the defective parts Check the connection between U1 Co

41、rrect connection Replace U1 or loader. Yes Check whether there is laser voltage (1.9V for CD and 2.4V for DVD) on L9 and L10. Check if there is RFO signal on pin17 of XP2. (The normal RFO signal is a clear reticulated wave) Trouble shooting chart Check U1, U2, and peripheral components are eroded or

42、 badly soldered. 4-5 Only DVD disc or only disc except DVD can be played No No Yes Only DVD disc, or only disc except DVD can be Played. Check the FFC connection between 24pin and the loader. Check the loaded circuit Check the solder status on U1 and peripheral components Check whether there is volt

43、age variance on pin 25 of U1. check if bad solder exist on U1 and peripheral components Replace the bad spare parts Check whether pins of U1 and peripheral components are badly soldered, defected Check Q5, Q7 whether in good condition Yes Yes Yes Go Correct connection Change U1 or the loader. No No

44、Yes Check laser voltage (2.4V) output on L10, if pin18 of U1 is at low level. Trouble shooting chart No 4-6 No display on LED, and buttons do not work No No No Yes Yes No display on LED, and buttons do not work Check whether there is correct contact between XS301 and XP5 Correct connection Fix power

45、 supply board top a power supply for should electric circuit Check the U1s pin 87,41,40 arrive the XP5 connect condition Correct connection Replace U301 or LED Yes Yes Yes No Check VCC(+5v) voltage on the power and front board Check there are STB, SDA and SCK signals on XS301 on the front board. 1.C

46、heck whether bad solder exists on U301 and pins of LED, 2.Check whether the circuit connected to K302, K303, K304 and K301 is broken, 3.Check whether R300, R301 and R302 are open-circuit. Trouble shooting chart XP5 (PIN 1 CLK)XP5 (PIN3 DOUT) 4-7 Distorted audio and loud noise No Yes No Yes Yes No No

47、 Distorted audio and loud noise Replace R84 and R94 Check Q3 Replace Q11Q12 Check whether the muting transistor R84 andR94 are normal Yes Check whether the muting transistor Q11,Q12, are normal Checking the U6 leads the feet has no to break to open ? Replace R86,R87 Check the voltage on pin3 or pin5 of U6 is OK. (Should be 2.53.1V) Check whether the U1 or U6 powersupply normal No Yes Check the power supply voltages +12V to the operation ampli