Symptom 1
Biopsy orifice, air supply, water supply button spray failure repair, biopsy hole spray is caused by the wear of the biopsy valve gasket, as long as the new gasket can be removed. The biopsy valve gasket of the electronic gastroscope should be disposable and hygienic and safe. If used repeatedly, it will definitely cause liquid spraying. The spraying of air and water supply buttons is caused by deformation and damage caused by the aging of the O-type sealing ring inside the button. So replace the O-ring, but don't forget to apply a little silicone oil to the new replacement O-ring, which both lubricates and strengthens the seal.
Fault phenomenon 2: Air supply, water supply, suction pipeline blockage, fault maintenance, air supply, water supply pipeline blockage, the reason is that the electronic gastroscope is blocked by a foreign body in the clinical examination, and the air pump can be used to pump air from the air supply and water supply button to blow off the foreign body. If the blockage is severe, the air and water nozzle can be replaced. The blockage of the suction pipe is caused by the inhalation of foreign bodies such as cotton balls, gauze, or polyps, and the suction pipe can be blown away by pumping air from the suction button with a pump. If between the 4 of the photocoupler D1 5 conduction Q1 saturation JK1 engagement K2 engagement on the rear panel of the modulator 220V alternating current is added to the attachment coil of KJP1 AC contactor KJP1 after engagement temperature control, movement, three-phase regulator, KJP2 energized Three-phase voltage regulator Modulator high-voltage power supply The whole machine enters the preheating state. The monitor board of this machine is greatly improved from page 104 of the atlas, and all the gate circuits behind the optocoupler are removed, and the triode is directly driven to control the micro relay JK1 JK6, so that the corresponding 24V grounding intermittently controls K2, K3, etc. The 24V voltage on the measured board is 15V R1, and the voltage to the ground is 5 8V Q1 is not conducted. Measure Q1 base to ground 0 5V Q1 itself and upper and lower bias resistance R7 (4 7K) R13 (200) good KJP1 hook-up after a 200 resistance on R13 But JK2 JK6 still has no action The analysis reason is that the working voltage is low It should be 24V instead of 15V along the line to find the 24V output of this voltage from the first-line power supply There is a set of 15V outputs Each set of 24V measured 24V is 15V 15V 15V is only 4V Obviously, the power supply is faulty.
Troubleshooting. The power supply model is 4nic x46 5 linear power supply produced by Hefei Guowei Electronics *** using full pouring sealing process The price is high and can not be purchased for a while The so-called linear power supply is different from the traditional regulated power supply of switching power supply After disassembling and checking for two pieces of LM317 damage, the emergency will be a single board computer special power supply after a slight transformation on the machine to resume work.
Its 24V output:
660 1a Fuse 594 (modulator monitoring board).
595 595 (monitoring board grounding blue wire).
The 15V output goes to 15V
533→ct2→a42a43
534→fxs03（34）
535→fxs03（35）
650→fxs03（34）
651→fxs03（35）
Ground: 539 ct b1 b2 42 43
654→fxs03（44）
15v536→fxs03（39）
537→fxs03（40）
538→ct2→a1a2
652→fxs03（39）
653→fxs03（40）
Wherein: FXS) and FXS) are the plus or minus 15V voltage (U, U) of the modulator respectively, and the positive and negative power supply of N1 (LM741) is sent to the signal input and output processing circuit (1 board) by FXS07, and FXS03 (44) is the ground wire of the modulator.
Equipment model: Olympus GIF-LV1 electronic gastroscope.
Test Result:1Abnormal images and serious flicker interference;
2.The LED light is normal for the time being;
3.The condition of the insertion tube is acceptable;
4.Pliers tube wear;
5.Steel wires and spiral pipes are worn.
Maintenance plan: maintenance and replacement: CCD, LED light, pliers tube, steel wire, spiral tube, eraser.
Repair cycle: 4 working days.
Warranty duration: 6 months.