Philips-DVP-1120-Service-Manual(1) 电路图 维修手册.pdf

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1、. Technical Specifications.1-2 . Safety Instructions, Warnings, Notes.1-3 . Mechanical and Dismantling Instructions.2-1 . Region Code, Software Version 50/60 Hz Power consumption 10 W Power consumption in 1 W Standby mode Specifi cations are subject to change without prior notice. Technical 1-2 Radi

2、oFans.CN 收音机爱 好者资料库 Safety instructions 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 substi

3、tution (other than 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

4、 mounted cable clamps. . 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 (kee

5、p the mains cord unplug). 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、 6) Switch the unit “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

7、Wavelength : 650nm (DVD) : 780nm (VCD/CD) Output power : 7mW (VCD/CD) : 10mW (DVD) 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 instruct

8、ions, Warnings, Notes 1-3 RadioFans.CN 收音机爱 好者资料库 Warnings 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

9、set by a wristband with 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 measurem

10、ents in the live voltage 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 se

11、rvice the player. Service 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 “

12、on”. 2. Laser . The 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 play

13、er. . Text below is 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 L

14、ead-Free requirement 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 (lea

15、ded/ lead-free). So 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 require

16、d, please contact the 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

17、solder-temperature of 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 exce

18、ed 4 sec. Avoid temperatures 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 recommen

19、ds strongly to avoid 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

20、 to be purchased at 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-

21、packaging (sealed 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 be

22、fore 1.1.2005, containing 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) Heatin

23、g-profiles of BGAs 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. Warnings, Notes 1-5 Mechanical and Dismantling Instructions Dismantling Instruct

24、ion The following guidelines show how to dismantle the player. Step1: Dismantle the top cover: remove 9 screws around the bottom cabinet and disconnect 1 connector, then remove the top Cover. (Figure 1 & 2). 2-1 Figure 2 Figure 1 CON1 Mechanical and Dismantling Instructions Dismantling Instruction S

25、tep2: If the disc blocked in the loader and disc door cant open in normal way, you can make it through the instruction as below to take out the disc. (Figure 3 & 4) Note: Make sure to operate gently otherwise the guider would be damaged. Figure 3 Figure 4 2-2 Remove the spring follow the red sign Th

26、en the disc door will flick out automatically. Mechanical and Dismantling Instructions Dismantling Instruction Step3: Dismantling Loader: disconnect the 2 connectors aiming in the figure and 4 screws, then can remove the loader. (Figure5) Step4: Dismantling main board: disconnect the 2 connectors ai

27、ming in the figure and 5 screws, then can remove the main board. (Figure6) Figure 5 2-3 CON1 CON2 Figure 6 CON3 CON4 Mechanical and Dismantling Instructions Dismantling Instruction Step5: Dismantling power board: disconnect the 2 screws, then can remove the power board. (Figure7) Step6: Dismantling

28、IR board: remove the IR board follow the red sign, then can remove the IR board. (Figure8) Figure 7 Figure 8 2-4 Mechanical and Dismantling Instructions Dismantling Instruction Step6: Dismantling switch board: disconnect the 2 screws, then can remove the switch board. (Figure9) Step6: Dismantling th

29、e front board: disconnect the 2 screws, then can remove the front board. (Figure10) Figure 9 2-5 Figure 10 Software upgrade A. Preparation to upgrade software 1) Start the CD Burning software and create a new CD project (Data Disc) with the following setting: Label: DVPXXXX(No need the label name) F

30、ile Name: DVPXXXX_XX.BIN 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 B. Procedure for software upgrade: 1) Power up the set and insert the prepared Upgrade CDR. 2) The set will

31、starts reading disc & 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 disc will automatically out when files coping complete, then take out the disc. 5) Ab

32、out 1 minute later, the trace will automatically close when upgrading complete. C. Read out the software versions to confirm upgrading 1) Power up 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: Vers

33、ion XX.XX.XX.XX (main 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 XX 3-1 Caution: The set must not be power off during upgrading, in that case the decoder board wil

34、l be damaged entirely. 4-1 Spindle motor does not move Yes Yes No No No No Yes Check whether “RFA5V” (+5V) voltage is normal. Correct connection Check the RFA5V power supply Check/Replace Q2?Q3. Check/ Replace U1. Have no focus 1. Check U1 182pin FOCUS_PWM signals 2.If there are F+, F-, T+ and T- si

35、gnals output from U7. Check/Replace the loader Yes Yes No Go Check whether laser voltage (2.3V for DVD & 1.9V for CD) on Collector of Q2 and Q3 Check the FFC connection between 24P and the loader. 1.Whether voltage on pin 129 of U1 varies between 0 and 3.3V (3.3V for CD and 0V for DVD), 2.Whether pe

36、ripheral components are eroded or badly 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 t

37、he connection to K401 is broken. Correct the connection Replace U1. No No Yes Yes Check if the CN301 on the front board to CN5 on the decoder board is in good contact. Whether there is 0V and 3.3V voltage difference on Pin 192 PCON of U1. Trouble shooting chart 4-3 All output voltages on the power b

38、oard is 0V or deviated. No No No Yes No 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 and C2. Check whether 100KHz oscillatin

39、g signal on Pin6 of U1 Check if +5V, , +12V and -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

40、cannot be read. Check the loaded circuit 1.Check voltage on pin 100 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 de

41、fective parts Check the connection between U1 Correct connection Replace U1 or loader. Yes Check whether there is laser voltage (2.3V for DVD and 1.9V for CD) on Collector of Q2 &Q3 Check if there is RFO signal on pin10 of CN2. (The normal RFO signal is a clear reticulated wave) Trouble shooting cha

42、rt Check U1, U7, and peripheral components are eroded or 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

43、U1 and peripheral components Check whether there is voltage variance on pin 182 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 Q2 whether in good condition Yes Yes Yes

44、Go Correct connection Change U1 or the loader. No No Yes Check laser voltage (2.3V) output on Collector of Q2, if pin181 of U1is at low level. Trouble shooting chart No 4-6 Distorted audio and loud noise No Yes No Yes No Distorted audio and loud noise Replace R65 and R67 ? Replace Q17Q18 Check wheth

45、erthe resistors R65 andR67 are normal Yes Check whether the muting transistor Q17,Q18, are normal Checking the U14 leads the feet has no to break to open ? Check whether the U1 or U14 powersupply normal No Yes Check the power supply voltages +12V and -12V to the decode board are normal. Yes Check U1

46、4 Replace U1 or U14 No Yes Trouble shooting chart 4-7 Abnormal color of video picture Yes Abnormal color of video picture Check whether the 3.3V and 1.8V power supply voltages on the decoder board are normal. Check Y1, R13, C38 and C39 Check other of power supply electric circuit Correct the connect

47、ion Check whether the video filter network circuit is normal. Yes Yes No No No Check whether the 27MHz output signal is normal. Trouble shooting chart change U1 Yes No Check if the video signals on Pin 147,149,151,152,154 of U1 are normal 4-8 Remote reception is insensitive or fails. No Remote reception is insensitive or fails. Check if the remote control works properly. Check battery Check R201?R202?R93? C201?C14 Use an oscilloscope to check if there is output waveform from the first pin IR of the remote censor after pressing button on the remote control. REM1(PIN1 - RC waveform) Check if