Pioneer dv 444 service manual

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2 DV-545, DV-444-S, DV-444-K This service manual is intended for qualified service technicians ; it is not meant for the casual do-it- yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. WARNING ! THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. A SPECIALLY INSTRUCTED PERSON SHOULD DO SERVICING OPERATION OF THE APPARATUS. LASER DIODE CHARACTERISTICS FOR DVD : MAXIMUM OUTPUT POWER : 5 mW WAVELENGTH : 650 nm FOR CD : MAXIMUM OUTPUT POWER : 5 mW WAVELENGTH : 780 nm LABEL CHECK DV-545/WYXJ Only 1. SAFETY INFORMATION Additional Laser Caution 1. Loading-status detection switch (S101 on the LOAB assy) are detected by the microprocessor (IC601 in the DVDM assy). - To permit the laser diode to oscillate, it is required to set the loading- status detection switch for the clamp position (the center terminal of S101 is shor ted to +3V). When the voltage of IC101-pin 20 is +3V and IC601 (microprocessor) - pin 83 is +3V, 650nm laser diode for DVD oscillates in the DVDM Assy. When the voltage of IC101-pin 20 is +3V and IC601 (microprocessor) - pin 83 is 0V (GND), 780nm laser diode for CD oscillates in the DVDM Assy. In the test mode -ˆ— , the laser diode oscillates when microprocessor detects a PLAY signal, or when the PLAY key is pressed (S203 ON in the FLKB assy), with the above requirements satisfied. 2. When the cover is open, close viewing through the objective lens with the naked eye will cause exposure to the laser beam. -ˆ— : See page 53.

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DV-545, DV-444-S, DV-444-K 3 2.1 PACKING 1 Power Cord See Contrast table (2) 2 Audio Cord (L = 1.5m) See Contrast table (2) 3 Video Cord (L = 1.5m) See Contrast table (2) 4 Remote Control Unit See Contrast table (2) 5 Battery Cover See Contrast table (2) NSP 6 Dry Cell Battery (R6P, AA) See Contrast table (2) 7 Pad VHA1277 NSP 8 Warranty Card ARY7022 9 Packing Case See Contrast table (2) 10 Mirror Mat (0.5 × 750 × 600) Z23-007 NSP 11 Reinforcement Board VHC1083 12 Polyethylene Bag VHL1051 (0.03 × 200 × 300) NSP 13 Polyethylene Bag Z21-038 (0.03 × 230 × 340) 14 IM Holder See Contrast table (2) 15 Accessory Box See Contrast table (2) 16 Operating Instructions See Contrast table (2) 17 Operating Instructions See Contrast table (2) 18 Operating Instructions See Contrast table (2) 19 Operating Instructions See Contrast table (2) (1) PACKING PARTS LIST Mark No. Description Part No. 2. EXPLODED VIEWS AND PARTS LIST NOTES: - Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. - The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. - Screws adjacent to mark on the product are used for disassembly. (2) CONTRAST TABLE DV-545/WYXJ, WVXJ, DV-444-S/WYXQ, WYXQ/FRGR, WVXQ, DV-444-K/WYXQ, WYXQ/FRGR and WVXQ are constructed the same except for the following : Mark No. Symbol and DescriptionPart No. DV-545 DV-444-S DV-444-K WYXJ WVXJ WYXQWYXQ /FRGRWVXQ WYXQWYXQ /FRGRWVXQ NSP1 2 3 4 5 6 9 14 15 16 17 18 19Power Cord Audio Cord (L = 1.5m) Video Cord (L = 1.5m) Remote Control Unit Battery Cover Dry Cell Battery (R6P, AA) Packing Case IM Holder Accessory Box Operating Instructions (English/Italian) Operating Instructions (French/German) Operating Instructions (Dutch/Swedish) Operating Instructions (Spanish/Portuguese)ADG1154 VDE1052 VDE1053 VXX2627 VNK4423 VEM-013 VHG2121 VHC1082 Not used VRD1132 VRD1133 VRD1134 VRD1135ADG1156 VDE1052 VDE1053 VXX2627 VNK4423 VEM-013 VHG2096 Not used VHC1080 VRD1132 Not used Not used Not usedADG1154 VDE1054 VDE1055 VXX2702 VNK4631 VEM1010 VHG2083 VHC1082 Not used VRD1137 VRD1138 VRD1139 VRD1140ADG1154 VDE1054 VDE1055 VXX2702 VNK4631 VEM1010 VHG2102 Not used Not used Not used VRD1138 Not used Not usedADG1156 VDE1054 VDE1055 VXX2702 VNK4631 VEM1010 VHG2103 Not used VHC1080 VRD1137 Not used Not used Not usedADG1154 VDE1054 VDE1055 VXX2702 VNK4631 VEM1010 VHG2080 VHC1082 Not used VRD1137 VRD1138 VRD1139 VRD1140ADG1154 VDE1054 VDE1055 VXX2702 VNK4631 VEM1010 VHG2100 Not used Not used Not used VRD1138 Not used Not usedADG1156 VDE1054 VDE1055 VXX2702 VNK4631 VEM1010 VHG2101 Not used VHC1080 VRD1137 Not used Not used Not used FRONT 16, 17 "Operating Instructions" 18, 19 "Operating Instructions"13 151 12 8 11 1211 10 95 4 6 32 1 7 (1/2)7 (2/2) 7 (1/2) 7 (2/2) 14 WYXJ and WYXQ Types Only Except WVXJ and WVXQ TypesWVXJ and WVXQ Types Only