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5 - 3

5-3. Troubleshooting Procedure

The troubleshooting flow charts in [Figure 5-1] will guide service personnel to a faulty
assembly or components that should be replaced or corrected. When a faulty assembly
is isolated, it will be adjusted to correct state, or be replaced with a new good assembly.
In case that service people have good knowledge in electronics, proper test equipment
and components, they can troubleshoot to a single faulty component.

All technical documentation necessary for adjustments and troubleshooting are
prepared in the Chapters 6, 7 and 8.

Legend of Troubleshooting Flow Chart

.

Square ..........

Action

.

Diamond

..........

Decision

.

A

Circle

..........

Connection to/from other branch.

.

Vertical

line

..........

"YES"

path

.

Horiz.

line

..........

"NO"

path

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Содержание MS930A

Страница 1: ...SERVICE MANUAL SEGMENTATION SYSTEM Model MS930A MS930E MS940A MS940E MS950A MS950E MS960A MS960E MS970A MS970E Centron Technologies Corporation...

Страница 2: ...MS930E MS940A MS940E MS950A MS950E MS960A MS960E MS970A MS970E No CAT MS950SM1 1Ee ISSUE 2 DEC 2005 Centron Technologies Corporation 319 25 Sadang 4 dong Dongjak ku Seoul 156 823 KOREA Tel 82 2 522 7...

Страница 3: ...and trained personnel should remove covers 2 Installation Nominal AC mains voltage of the models MS930A 970A is 100 120 volts 50 60Hz and operational voltage range is 90 132 volts Nominal AC mains vo...

Страница 4: ...3 4 3 8 Distribution Board 3 5 3 9 Sealing Head Unit 3 5 3 10 Switch Board 3 6 3 11 Trigger Board 3 6 3 12 Matching Board 3 6 4 Standard Operating Procedure 4 1 4 1 Operation Mode 4 1 4 2 Operation i...

Страница 5: ...ting flow chart 5 4 Figure 5 2 Remote control scheme 5 9 Figure 5 3 RF test set up 5 11 Figure 6 1 System wiring diagram 6 2 Figure 7 1 Exploded view of MS950 Control unit 7 2 Figure 7 1 Exploded view...

Страница 6: ...100 120 VAC MS930E 3 200 240 VAC MS940A 4 100 120 VAC MS940E 4 200 240 VAC MS950A 5 100 120 VAC MS950E 5 200 240 VAC MS960A 6 100 120 VAC MS960E 6 200 240 VAC MS970A 7 100 120 VAC MS970E 7 200 240 VA...

Страница 7: ...1 2...

Страница 8: ...remote control connector is put on the 9 pin D sub connector on the rear panel of control unit Remote command mode is selected by software commands from an external computer circuit or a personal comp...

Страница 9: ...Over current protection By recoverable circuit breaker 8 Indication lamps Control unit POWER ON green Segmentation unit READY green SEALING red 9 Alarms audible indication by buzzer visual indication...

Страница 10: ...2 1 2 Appearance and Function 2 1 Control Unit MS950A E shown...

Страница 11: ...ealing process Upon receiving start signal the sealing heads start not at same time but one by one in series Time interval between start of one sealing head and start of the next sealing head can be s...

Страница 12: ...status code among A 2 E 2 is displayed For example when 3 head does not work C 2 will be given Not having alarms does not mean that all seals made are perfect Alarm feature is provided not to decide...

Страница 13: ...2 4 2 2 Segmentation Unit MS950A E shown...

Страница 14: ...s as necessary An ENABLE DISABLE selector switch is prepared on the rear panel of each sealing head unit If the selector switch is selected at DISABLE the sealing head unit does not work even if an EN...

Страница 15: ...tains all logic circuits and timing gates It receives trigger command signal from 1 sealing head unit and controls overall function of this equipment RF board assemblies locate in control unit which a...

Страница 16: ...3 2 Figure 3 1 Overall System Block Diagram...

Страница 17: ...at switches SW1 and SW2 on the control board 3 3 I O Board I O board has EMI filters on each signal lines and two opto couplers for isolation of remote control fixtures 3 4 Power Distribution Board Th...

Страница 18: ...d The signal is amplified at drive amplifiers then fed to power amplifier stage It works only when control command is applied A strong RF push pull power amplifiers amplify RF power The power is then...

Страница 19: ...board Figure 3 3 represents the functional block diagram of sealing head unit The trigger lever in 1 sealing head unit has two features In local mode of operation a cycle of sealing starts when it is...

Страница 20: ...se hence the limit switch in the sealing head is depressed This signal from limit switch goes to control board and turns RF power generation of the sealing head unit off 3 10 Switch Board An ENABLE DI...

Страница 21: ...does not start The trigger lever at 1 head senses presence of tubing and then enables circuit to accept command given by the remote switch only when tubing has been loaded in 1 sealing head unit All...

Страница 22: ...rt Trigger lever at 1 head senses presence of tubing then enables circuit to accept the start command only when tubing has been loaded in 1 sealing head unit When sealing has ended confirmation comman...

Страница 23: ...head unit is enabled C 2 When 3 sealing head unit has made incomplete sealing D 0 When 4 sealing head unit is disabled D 1 When 4 sealing head unit is enabled D 2 When 4 sealing head unit has made in...

Страница 24: ...ure to the remote control connector 3 Turn on the power switch 4 Place tubing in sealing heads The 1 trigger lever should be depressed 5 Let DC current flow between pin 7 pin 8 by circuits or by activ...

Страница 25: ...first M 1 is an echo of the command that you have typed in and the second M 1 is a status code that system replies 8 Place tubing in sealing heads and let 1 trigger lever be depressed When 1 trigger l...

Страница 26: ...repeat 5 keys every time To do it simple you can save the command in a Function key in the program On menu bar click Settings Function Keys In Function Keys dialog box you can set up to 8 function key...

Страница 27: ...cteristics Cleaning of sealing head section 5 1 Precaution When performing troubleshooting keep following general precaution Use proper test equipment and tools Be careful enough not to touch any AC m...

Страница 28: ...er 100 MHz 200 Watts Screwdrivers cross tips flat tips 2 More test equipment necessary for complete troubleshooting DC Ammeter 20 amperes Regulated DC power supply 12 V 20 A with current limiting feat...

Страница 29: ...r be replaced with a new good assembly In case that service people have good knowledge in electronics proper test equipment and components they can troubleshoot to a single faulty component All techni...

Страница 30: ...5 4...

Страница 31: ...5 5 Figure 5 1 Troubleshooting Flow Chart Page 2 3...

Страница 32: ...5 6 Figure 5 1 Troubleshooting Flow Chart Page 3 3...

Страница 33: ...set as the following SW2 DISABLE ENABLE 1 2 3 4 5 6 7 8 If 3 sealing head will not be used in MS950 model it should be as the following SW2 DISABLE ENABLE 1 2 3 4 5 6 7 8 Factory setting is all head...

Страница 34: ...y when sealing is done at the head When the bit slide is set at right all sealing heads return same time when sealing at all heads is done Factory setting is left returning independently SW1 1 TO 8 8...

Страница 35: ...fixture should be prepared by users Refer to Figure 5 2 below The diagram is a conceptual drawing to give users technical understanding concerning interfaces between the machine and the fixture to be...

Страница 36: ...between pin 1 collector and pin 6 emitter of the photo transistor in opto coupler chip Suggested serial resistance shall vary depending on power source voltage A same resistor as above can be used 3...

Страница 37: ...ment according to the Figure 5 3 2 Set DC power supply at 12 volts Be sure to set a current limit of the power supply at 20 amperes CAUTION Failure to set current limiter may cause RF transistors blow...

Страница 38: ...50 ohm dummy load is connected at 40 68 MHz If you would have no oscillation turn transformer T1 slowly until oscillation starts Set T1 at mid point of the adjustable ranges where you have oscillation...

Страница 39: ...oughly dry sealing head area before applying power If any sealing head is wet when RF energy is applied an arc may appear Follow the decontamination procedure of your facility when a blood spill occur...

Страница 40: ...6 1 6 Schematic Diagram Figure 6 1 System wiring diagram...

Страница 41: ...6 2...

Страница 42: ...6 3...

Страница 43: ...page 2 2 Figure 7 2 Control board layout Figure 7 3 I O board layout Figure 7 4 RF board layout Figure 7 5 Power distribution board layout Figure 7 6 Distribution board layout Figure 7 7 Trigger board...

Страница 44: ...7 2...

Страница 45: ...7 3...

Страница 46: ...7 4...

Страница 47: ...7 5...

Страница 48: ...7 6...

Страница 49: ...7 7...

Страница 50: ...7 8...

Страница 51: ...7 9...

Страница 52: ...ound by the find number in exploded views and circuit board layouts in Chapter 7 Prefix A in find number denotes that it is not a single component but an assembly so a lower level part list of which i...

Страница 53: ...8 2...

Страница 54: ...8 3...

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