Philips-DVP-3111-Service-Manual(1) 电路图 维修手册.pdf
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1、DVD PLAYER DVP3111/12/51/58/77/98/79 Published by BU AVM CY SL Printed in the Netherlands Subject to modification 3141 785 34160 Version 1.0 TABLE OF CONTENTS Chapter Technical Specification, PCBs Location. 1 Safety Instruction 2 Instruction for Use 3 Mechanical and Dismantling Instructions. 4 Troub
2、leshooting . 5 Overall Block Diagram 6 Electrical Diagram 7 Exploded View Diagram 3. Reading the USB or CD-ROM,in accordance with prompt,press ”OK” key to upgrade. Warning: Do not unplug the AC adapter during firmware upgrade to prevent flash corrupt of the set! Procedure to check SW version of your
3、 DVD Portable 1. OPEN 2. Press SETUP MENU 3. Select Preferences 4. Select Version Info 5. Press “OK” key 1-3 BarthService 2.0 Safety instruction 1. General safety Safety regulations require that during a repair: . Connect the unit to the mains via an isolation transformer. . Replace safety component
4、s indicated by the symbol Only by components identical to the original ones. Any Other component substitution (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 p
5、articular, Attention to the following points: . Route the wires/cables correctly, and fix them with the 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
6、connect a wire between The two pins of the mains plug. 2) Set the mains switch the “on” position (keep 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 t
7、han 1M 5) Verify this, before you return the unit to the customer/user (ref. UL-standard no. 1492). 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 se
8、rvice this device (due to possible eye injury). Laser device unit Type :Semiconductor laser GaAIAs Wavelength :650nm (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
9、, may result in hazardous radiation exposure. Avoid direct exposure to beam. 2-1 BarthService 3.0 INSTRUCTION FOR USE You can download this information from the following websites: 3-1 BarthService 4.0 MECHANICAL AND DISMANTLING INSTRUCTIONS The following guidelines show how to dismantle the player.
10、 Step1: Remove 5 screws around the Top Cover, and then remove the Top Cover(Figure1) Figure 1 Step2:If the tray cant open in normal way, you can make it through the instruction as below (Figure2) Figure 2 Step3: If it is necessary to dismantle Loader or Front Panel, the Front door should be removed
11、first(Figure3) 4-1 Figure 3 BarthService Figure 5 Step4: Remove the 10 screws on board to dismantle the DVD BOARD & POWER BOARD & LED BOARD (Figure 4&5) Figure4 4.0 MECHANICAL AND DISMANTLING INSTRUCTIONS 4-2 BarthService Spindle motor does not move Yes Yes No No No No Yes Check whether “MO_VCC” (VC
12、C) voltage is normal. Correct connection Check the MOVCC power supply Check/Replace Q10 ?Q11. Check/ Replace U1. Check opu focus 1. Check U2 25pin FOO signals 2.If there are F+, F-, T+ and T- signals output from U1. Check/Replace the loader Yes Yes No Go Check whether laser voltage (1.9V for CD & 2.
13、3V for DVD) on L21 & L22 Check the FFC connection between 24P and the loader. 1. Whether voltage on pin 23 of U2 varies between 0 and 3.3V (3.3V for CD and 0V for DVD), 2. Whether peripheral components are eroded or badly soldered. Trouble shooting chart Motor not move 5-1 BarthService The power can
14、 not be on or off Go Yes Yes No No The power cant be on or off Yes Replace the power board Check the power supply on the power board and the connection to to decoder board is normal. Check/Correct connection Whether the connection to Standby Board is broken. Correct the connection Replace U1. No No
15、Yes Yes Check if the CON2 on the front board to J 6(7PIN) on the decoder board is in good contact. Whether there is 0V or 3.3V voltage difference on Pin41 of U2 Trouble shooting chart or correct the connection 5-2 BarthService Disc cannot be read. No Yes No Yes No Yes Yes No No Yes Disc cannot be re
16、ad. Check the loaded circuit 1.Check voltage on pin 23 of U2 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 U2 and peripheral components Re-solder or replace the defective parts
17、 Check the connection between U2 Correct connection Replace U2 or loader. Yes Check whether there is laser voltage (1.9V for CD and 2.3V for DVD) on Collector of Q11 &Q10 Check if there is RFO signal on the pin8 of HA1. (The normal RFO signal is a clear reticulated wave) Check U1, U2, and peripheral
18、 components are eroded or badly soldered. Trouble shooting chart 5-3 BarthService 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 statu
19、s on U2 and peripheral components Check whether there is voltage variance on pin 18 of U2. check if bad solder exist on U2 and peripheral components Replace the bad spare parts Check whether pin 1 - 26 and pin 125-128 of U2 and peripheral components are badly soldered, defected Check Q5, Q6, Q7 whet
20、her in good condition Yes Yes Yes Go Correct connection Change U2 or the loader. No No Yes Check laser voltage (1.9V) output on Collector of Q11, if pin 17 of U2 is at low level. No Trouble shooting chart 5-4 BarthService Distorted audio and loud noise Yes No Yes Yes No Distorted audio and loud nois
21、e Replace L2 Replace Q12, Q14 Check he power supply voltages +12V to the operation amplifying L2 are normal Check whether the muting transistors Q12, Q14, are normal Checking the U2 leads the feet has no to break to open Correct connection Check whether the U5 or U2 power supply normal No Yes Yes Ch
22、eck U2, U5 Replace U2, U5 No Trouble shooting chart No 5-5 BarthService 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, R17, C21 and C22 Check other of power supply electric circuit C
23、orrect the connection Check whether the video filter network circuit is normal. Yes Yes No No No Check whether the 27MHz output signal is normal. Change U2 Yes Trouble shooting chart 5-6 BarthService Remote reception is insensitive or fails. No Remote reception is insensitive or fails. Check if the
24、remote control works properly. Check battery Check R1 R2 on front board 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. IR1(PIN 3 - RCwaveform) Check if there is IR signal on pin 44 of U2 Check if the po
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