The new section d2311 and d2320 dvds will not be activated (red lights will not go out)。
The failure involved a wider surface, with a red light indicating that the power-stander 5v output was normal (the red-line 1 foot of the panel was the output-stander voltage). The power supply was made compulsory by means of a direct cut-off of feet 1, 2, 3 and 6 and 5v voltage, 4 foot 12v and 5 foot 7. 5v. The power supply was normal and proved to be non-functional。
The main panel to panel liner 1 (rmc) has a voltage voltage of about 4. 5v and the key control is normal。
The main plate d012 (ba033) 3. 3v 3rd end pressure block is normal, the vd007 (1n40021) depressure diode output end 2. 5v voltage is normal, and test-for-crystal vibration failure remains. None of the decoder blocks d2870 or the rom storage units found any anomalies in their power supply, nor did they fail to check their peripherals. The machine went back to normal after a trial change。
Summary: the rom block failure rate in this series is high and can be judged quickly as follows: 1. The test of the rom block d00810 feet is 3. 3v normal, and if the 2-8 voltage is around 1. 6v, then the basic determination is that the rom block is bad. This approach is also suitable for the new section series dvd machines using dha106, dhb206 and dhb606 main panels。
The new section, the sdp9530 mobile dvd, appears in white screens approximately five minutes after play. Sound disappears。
In case of failure, the light head is not focused and is not fed, measured at n102 (f7304) 5, 6 feet 4. 2v, 7, 8 feet 5. 5 v, vd106 (5v 3rd end voltage) output end 5v voltage is normal, but the vd107 (3. 3v 3rd end steady voltage) output is only 2. 5 v (low and visible heating), which is part of the main voltage feed code, where the test replaces this section and the failure remains. At the vd107 output end of the road, there is only 100 n of electrical resistance to the ground, indicating a load short circuit. C417 heat abnormalities detected with n419 storage 1 feet filtering, careful examination of the positive and negative polarization of the cap, taking it down to measure the absence of chargeable discharge (100 resistance times) and replacing the tester with a new cap of the same capacity。
New section sdp-8830, not available。
The new section, the sdp-8830 dvd, uses a human-sniffing core. The xs0031 foot voltage was measured on arrival and the 3 foot (silo detection foot) was 1. 8v. The core is measured at 1 foot 4. 6v, 3 feet 0v, normal time 1 and 3 voltage in two different states. Three feet of low voltage, suspected of leaking the detection switch, and test replacement failure continued. Following a 3-foot line, the foot was connected to the 136th foot of d2881 through the r312 electrical barrier, breaking the r312 and measuring the voltage as still 1. 8 v, which determined that there was a short circuit within d2881. The decoder block is a cross-coded chip for the new section, which cannot be purchased on the market, and the xs0031 foot is directly linked to the d2881-47 foot, which is linked to the xs0033 foot through r311, but is not loaded with r311. After searching for information and comparing it with different machines, r311 was found to be a new cd-type machine, such as dvd8300, dvd311, dvd312, and dvd8830, when r311 was loaded with zero euro electrical resistance and r312 was not installed. And the voltage goes up to 4. 6 v。
Summary: if d2881 decoder block is to be replaced, the end count is to be consistent, e. G. D2881-9ns, d2881-crs3。
The new section, dvd 311, is on dvd. A few quick strokes ... And then the laser head sends red light, and then the disk is shown in half a minute。
The machine uses a tri-ocean sf-hd60 laser head to try to replace the laser head, which remains the same, rewiring the light head, still unable to read the vcd disc and determine that the malfunction is on the main plate. The machine uses server, decoding the output of a `board, and rf processing, mpeg decodering, etc., are integrated into super-large-scale integrated circuits and are placed in a vcd to measure the d3800-23 foot vcd control end with 2. 2-3. 2v swinging voltage. At this time, the drive tube vd101 (model 1g)b had a very high voltage of 0-2. 8v, e-extreme voltage only voltage of o-1. 8v, and the detection of c-extraelectric l6 resistance had reached 650. Switch to l6。
The new section moves dvd-1710, which is open, but cannot be turned off。
Put it in the disc, the sound is fine, press the switch button, red light. But the bald head kept going back and forth, black screen. A portion of the power supply after the analysis shutdown is still in operation and the machine provides 9v voltage through the external exchange adapter. The motor block ba5954fp8 and 9 feet were 8v at the time of the shutdown, and should be 0v at normal time, and the circuit was searched for direct supply of the voltage by n102 (f7304) 7 and 8 feet, the 2nd foot (control foot) voltage of n102 was 8v, the 2nd foot was broken and the voltage remained at 8v, and the 1st foot and 2nd foot electrical resistance were measured at 1lv times, and the circuit was short, replaced with a single chip, and the switch/off was normal。
The new section, type 19108, moves dvds, powered into discs, without entry, focus or resonance. About a dozen seconds later, red light came out。
Analysis of server-driven circuit failure. Ba5888fp8 and 9foot 5. 5v are normal, 28 feet of electricity are 3. 2v, 27 feet and 4 feet are free of voltage when the warehouse is closed. The ba5888fb27 foot has been measured nearly zero times, followed d3800-30 feet to ba5888fb-27 feet, searched and tested on c64 and cb134 on this connection, and cb134 is found to be short-circuited. After its replacement, the ba5888-27 feet have been restored to l. 4v voltage and the machine has been put on track。
New section dvd-8100ps. Electro-power, red standby light on, button on, red light off, screen off。
Carefully observe that the light has been lighted, that there is no reaction on the television screen, and that key and remote controls do not work except for power keys. Turning on, restarting the machine, and observing a normal laser head flow, focus, resonance, laser strength, manually placed into the disc, the light head is visible, but the main axis is flying. Initial determination is that the power panels, key panels, rf processing, and servers are normal and the failure range should be coded on the circuit。
The first detection of electrical circuit d005 (2pm33) output foot of 3. 3 v, vd213 (2r) e very 2. 5 v, r063 positive end 3. 3 v, negative end 2. 8 v, n103 (pq05rtoll) 2 foot 5v, etc., is normal, and the d101 is also normal for the d001-24 re-entry pulsation level 4. 5v, touching the clusters with no visible warming or welding. (b) the principle of generational conversion of integrated circuits: one check of peripheral elements; second-generation replacement of easily interchangeable integrated circuits. When measuring the r391-r393, it was found that in r393, one of the resistors had grown to 1o times (the original resistor was 1o times) and the re-engineered tester had returned to normal。
Small note: the writer’s experience with overhauling is that one of the three sets of electrical resistance platoons in this type of machine becomes completely unopened more than 30 times, and sometimes not when it becomes 15-30 times. This failure applies to the new sections dvd8320, dvd8700, dvd8300ps, dvd6868ps etc。
New section dvp 1111a, powered, red on-line, power button not working. Pressing the remote switch button also fails。
The d3 (sc301) 1 foot 5v power supply is normal, 5 feet (controlled), 7 feet (key control) are open, and the switch signal is also subject to 4. 5 v voltage, but the 3 foot output switch signal is always 0 v, and the failure of this block is tried out。
The switch/offer control process is as follows: the power panel provides a 6v standby voltage plus d5 and the 3-foot output of 5v voltage provides for the d31 foot, receiver, key control, and the heater is on standby with a red light. The starter (by a power key, by a remote control key, by a pulse) voltage passes through the d37 and the d6 feet, respectively, so that the d33 feet output 5v to control the voltage, while the d9 and d23 output 5v, 3. 3 v, 1. 8 v. And the other to control the power panel 5v to work。
Dvd-767 (new mp4 type). Plug in the power supply, turn it on. About 10 seconds to automatically shut down. Pressing the power button does not work. Red light on. Pressing the remote-controlled power key will turn on and will automatically shut down in 10 seconds。
The red light is activated and is activated in an instant, indicating that the failure should be on the main and key panels. Stand-by d3 (sc301)1, 5 and 7 feet voltages of 5v, 5v, 1. 5v, and 7 feet of 5v, respectively. Disconnect 7 feet and voltage up to 5v. 7 feet linked to d2 (d3800) 105 feet, pulls out xs004 platoons, and 7 feet voltage is normal. Suspected power failure... Will be taken down by key, with a remote-controlled turn-off. Since there are no elemental devices on the line, the plate with the keys is carefully observed as a double panel, one weld key and one floor. Cut off the copper platinum around the hole, test it, troubleshoot it。
New section d 2100, d2,200 dvd, correct errors。
Dvd machines of the d2100, d2200, d858 types of the new section, using the tri-ocean hd3 dvd laser head (known as 231 cores within the new company), due to their long service time (mostly around 2004), should first check the normality of their main axial electric machines in the event of error correction, slow reading discs, etc., by removing the core from the machine to hold the key axle, using hand-plugging the motor wheel, and, if it is not fully operational and has noise, make a basic determination that the electrical power function is poor, without a single machine replacement, which can be used for the market-specific cleaning of small holes in the bottom of the electric machine, spray a proper amount of cleaning fluid, and then add 5-12v volts to the electric machine for high-speed rotation purposes. The method is simple, but not thorough enough, and the reloading can work if it has the ability to do so, with care to remove the generators and remove the impurities from their rotor stitches。
If the main axle is normal... It is mostly the result of the internal stain of the laser head. This type of laser is not designed to adequately protect the internal optical system and external dust is highly accessible to the internal optical component. Because of the extreme sophistication of the laserhead. It is recommended that they not be dismantled. The cleaning of its interior can be done by means of a simple self-made special tool: a 1/4w general-coloured circuit block, with a bend, a little bit of defamined cotton on its top and a little bit of polished, and then a specially made cotton ball is inserted from the plastic hole under the focal wire of the laser head。
Experience has shown that the three-ocean hd3 laser heads used in the new section series are of very stable quality. When the type of machine suffers from malfunctions such as error correction and slow reading, most of the damage is due to the stains of the main axle generator or laser head itself。
