3. Test tool introduction There will be a testing DVD disc (for NTSC system named as 5-1 disc, for PAL system named as 5-2P disc) as a tool when repair, below will introduce the content of the disc Performance Testing Procedure mainly contains 6 parts: 1).
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Test Criteria: Color bar has sharp, bright and stable color show; Mono scope or Dot pattern has no tilt or twisted effect; The RGB picture as below has normally good effect to the naked eyes. If anything undeterminable, please refer to the following factors to evaluate: Video Performance (The test appliance is Tektronix VM 700/s-video...
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If anything undeterminable, please refer to the following factors to evaluate: Audio Performance (The test appliance is Audio position SWR-2122U) DA converter 24 –bit /192KHZ AD converter -bit ≦ Signal-Noise (1kHZ) 90dB ≧ Dynamic range(1kHZ) 80dB ≧ Cannel Separation(1kHZ) 80dB ≧...
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5). Karaoke Demo Test: Items of the DVD disc in common use when rma 5.3.1 Necessary Repairing tools in need to test the following 3 items: A. Video output B. Audio output C. AV output (film) 5.3.2 Note of step: STEP1: A.
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C.Select the item 1—Video Signal Test and press “Enter” to start the test on any color difference in Color bar and the standard fineness of the RGB, then press “Top Menu” back to test menu STEP2: A.Select item 2—Speaker & Sound Signal Test and press “Enter” for the item 1--Speaker &...
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4. Fault Finding Tree Power cord Plug the power Front panel display? plug? cord Open top cover and Display Replace front use “multimeter” to Normal? Replace power display board verify if the power module module output both 5V&12V Press “EJECT”buttom to verify if the player Replace boot up and also tray...
Recording Press Record Select Source view button to start and display OK Select AV sources Check Show “Protected Source DVD is not but no connection Content” allowed to Check if TV system Show “Wrong Recording disc was AV Sources video is Signal Type”...
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Tuner : Select the source into TV mode first TV signal Can scan Replace Tuner on screen ? All channel? Board Can Fine tune Replace Tuner Display normally ? Channel? Board Check if Audio Check if the AV output /Video output Audio output issue properly when...
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Reference of defect symptoms for repair • After power cord plug in ,LED no display , but AV output normal after power on -> replace display board • After power on , the color of the screen isn’t correct -> replace M/B •...
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Module Fail / Problem Remedy / Symptom Load any disc always show "No disc", this could be a bad DVD drive Load some kind of discs always show "No disc". For example load DVD no problem, but load CD-R show "No disc", this could be a bad DVD drive DVD Drive Cannot open tray.
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Module Fail / Problem Remedy / Symptom Can not see any display or color abnormal, video distortion. Make sure cables connected correctly. Try another output like S-video, AV, Video Output Component, and Scart. Run SETUP to select available video output Can not hear any sound output through speakers of TV or amplifier.
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Module Fail / Problem Remedy / Symptom Cannot play a disc If it's not "Invalid disc", could be unsupported format/contents in the disc Show "Fail" when copying files/discs, it could be unsupported format Copying Show "Fail" when copying recorded DVD+VR title, it could be out of disc space Follow the firmware update procedure in the chapter”Firmware update”.
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Loader (DVD writer) Failure 3.1 Tray can’t open 3.1.1 Disassemble the Loader, and press the eject button on the Loader (with power supply connected : 4 pin connector) to check whether the tray can open or not. Re-assembly DVD writer (Loader), pay attention to assembly issue (Plastic layer of Loader stuck to front) and the position of IDE cable (40 pin;...
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TV (Tuner Function) Failure 5.1 Make sure that the Tuner Board had been assembled on Main Board at the right (pin) position and that it is clicked in. Look if the pins of the tuner are still straight and are placed in the right place 5.2 If the answer of former step is positive and all is assembled correctly, replace another new Tuner Board.
5. Disassembly introductions Disassemble the TOP-COVER: Step 1: Loosening the fixed screws of the TOP-COVER totally 5 screws, 3 on the rear panel and 1 on the left side and the other on the right side of the TOP-COVER, (as PICTURE 1 & 2 & 3) (PICTURE 1) (PICTURE 2) (PICTURE 3)
5.2 Disassemble the Drive: 3 Cables (PICTURE 6 ) (PICTURE 5) Screws (PICTURE 7 ) (PICTURE 8) Step 1: Tray out pull out the door and lift up to disassemble the tray door (as PICTURE 6) Step 2: Tray in Power off unplug the power cord Step 3: Disassembly the top cover...
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Step 5: Remove the four fixed screws of the drive (screw 1~4 as PICTURE 7 &8) Step 6: Remove the Drive PS: If the tray is jammed can’t be out on step 1, please use the mechanical unlock ticker to tray out for drive disassemble to separate the tray door and tray.
5.3 Disassemble the M/B: 7 cables (PICTURE 10) (PICTURE 11) (PICTURE 12) (PICTURE 13) (PICTURE 14) Step 1: Disassemble drive first please refer to page 5-2 Step 2: Remove 3 cables connect to other modules (as PICTURE10, 11, 12) Step 3: Unfixed the screw of the M/B (as PICTURE 13 ) Step 4: Loosen the 4 screws off the rear panel (as PICTURE 14) Note: Tuner can be removed and reused if isn’t broken when M/B is disassembled...
5.4 Disassemble the Power Module (PICTURE 20) (PICTURE 21) Step 1: Disconnect all the cables connected to M/B (as red circle in PICTURE 20) Step 2: Loosen the screws off the Drive & chassis (1~7 in PICTURE 20 & PICTURE 21) Step 3: Lift up and take out the power module...
6. Firmware Update 1. Burn the firmware on a single-session ISO disc. 2. Power on the system. 3. After system is ready, load the firmware update disc. 4. If system detects the image file, a confirm dialog will display on the screen. Follow the instruction to complete the update process.
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5. After system load the disc FW from disc , During the upgrade, wait for around 5~6 seconds, the disc might tray out automatically the tray then please remove the disc. 6. After upgrading, then press power on, system can auto reset. 7.
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IC AND TRANSISTOR VOLTAGE CHARTS 1.8V 2.52V U310 1.8V 5.09V 3.28V 3.30V 2.52V 5.08V 1.8V Please refer page 8-6 1.8V 3.24V Black Black Orange Yellow Power Module...