Dragon Tiger Struggle game machine pictures. This article: tag Dragon Tiger Struggle (VS203 version) game machine, Dragon Tiger Struggle (VS203 version) game machine manufacturer, Dragon Tiger Struggle (VS203 version) game machine price quote, Dragon Tiger Struggle (VS203 version). Upon turning on and pressing [Test Key], if there is no response on the screen, check the 7th foot of the Mahjong wiring component side to the 1010P521 optocoupler's second foot. When pressing [Test Key], if P521 is faulty, replace it. After replacement and stock account opening process, the fault is resolved. Users pressing [Test Key] will then see a pointer switch test diagram on the screen, allowing for function settings by moving the pointer switch.
If after turning on and pressing [Account Check Key] there’s no response on the screen, check from the 7th foot of the Mahjong wiring solder side to the 1013P521 optocoupler's second foot. When pressing [Account Check Key], if there is no change in voltage at P521’s 5th and 4th feet, determine that P521 is faulty. Replace it, and the fault is resolved. Users pressing [Account Check Key] will then see an account checking menu on the screen, enabling users to query required records based on the menu options, and also adjust and set the main and continuous gaming rates.
Turns on normally, but after the Dragon Tiger Struggle characters finish playing automatically, a light board appears. At this time, the demonstration music remains normal. Remove the IGS025 square package from the rear department and turn on again; the fault persists, indicating that the IGS025 square package is faulty when turned on. Turns on normally, but after inserting coins and starting, within a few minutes the screen shows irregular Mahjong tiles flying all over. Turn off and restart the machine; the fault persists. Replace the IGS025 square package, and the fault is resolved.
Upon turning on, irregular Mahjong tiles fly all over the screen. Remove the IGS025 and turn on again; irregular Mahjong tiles still appear, indicating that this fault is unrelated to the IGS025. Test signals U9U106264 data are abnormal. Replace U9U10, and the fault is resolved.
Upon turning on, the image and background are completely garbled. At the time, testing revealed U3362256 data signals were abnormal. Replace with another 62256 tested as fine by a microcomputer, but when the power voltage exceeds +5V, there are still irregular small Mahjong dots interfering with the library images on the screen. When less than +5V, the screen images are good. Later, install another 62256, and between +4.8-5.6V, the images are all good. It can be seen that although the 62256 has passed the micro-motion test, it still depends on actual results.
Turns on with a garbled board, but Mahjong tiles are clearly visible, just the background is messy. Testing reveals U3362256 data signals are abnormal. After replacement, the fault is resolved.
After turning on, the image is tested and U3362256 data signals are abnormal. A microcomputer test finds it damaged. Replace U336, and the fault is resolved.
Background turns on OK, but the moving Mahjong tiles are unclear, like covered with sandpaper forming a cloth pattern. When touching the 157-209 feet of the large U24IGS031 square package with your finger, the Mahjong tiles become clear. Using a magnifying glass, find that the 163rd foot of the large U24IGS031 square package is poorly soldered. After resoldering, everything works normally upon turning on.
Dragon Tiger Struggle Background: An irregularly garbled area appears on one piece of the Dragon Tiger Struggle background. The encryption block, fishing machine manufacturer, and program chip have been tested and are all fine. No incorrect waveforms were detected. Later, when re-burning the encryption block and replacing U25ATF16V8 with AMD16V8, the fault was eliminated. Analysis suggests incomplete decryption by U1522V10.
Large Character Board Repair:
1. Unable to score: This board cannot add points when turned on, though the image is normal with functions like account checking 1 and 5. Pressing 3 has no effect. Try replacing, check the ground wire for scoring, and discover a diode 1N4148 has broken down. Replace with a good one, turn on and score 100 points, then shut down and replace the original two pieces. Start again, and it doesn't work. Try each piece individually and find a nearby 6821 is faulty. Replace with a good one, and everything is OK.
2. Deduction without recording: This board deducts points without recording. First, check if the fifth foot of the switch is not properly connected, and if the deduction is 10 points per time. Generally, welding the fifth foot switch should be OK.
3. Fixed machine board: Turns on with an image, but flashes a few times and then locks up. Measuring at the 74SL139 location, the signal is found to be incorrect. Replace with a new 74SL139, and everything is normal after being turned on for a long time.
4. Garbled board: This board turns on with overlapping images. Checking the image section, at the 6116 location, it is found that the 1st, 2nd, 3rd, and 4th feet have no signal. These go to the 4th, 7th, 9th, and 12th feet of the 74SL157. Replace with a new 74SL157, and everything is normal upon turning on.
Dragon Tiger Struggle Fault: Turns on with an image but no background.
Repair: Insert the lower right corner 62256 which heats up slightly. Replace it, and it’s OK. Note: Best to use 62256-15 or above. Otherwise, there may be garbled spots. Earth brand is the best.
Big Character Poker No Image:
(1) This board is new and used for a few hours before losing the image, only having sounds for adding points, betting points, deducting points, and revealing cards. Replace with a 6845, and everything is OK.
(2) This board has sounds for adding points and revealing cards but no image. Measure and check the image section, finding a 74LS174 logic error. Replace with a new one, and everything is OK upon turning on.
(3) This board has sounds for adding points and deducting points but no image. Try replacing 74LS174 and 74LS245, but the fault persists. Then replace with 74LS273, and everything is normal.