HF-525Plus: Error Codes & Solutions [PDF]

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HF-525Plus Error Codes & solutions

Brief error codes Error Err CHA

What to check and repair

Main description

code

Bad Charge/Discharge to main capacitors. Go to page 27

Err Roto

Wrong

connection

of

Tube

Anode

Stator or malfunctioning. Go to Page 15

Err FILA

Tube Filament circuit badness or Tube Filament broken. Go to page 33

Err 232

Communication

error

between

OP

console and Generator (Mio board) Go to Page 12.

Err AEC

AEC circuit board failure or connection error to Ion Chamber.

Err SEC

Exposure switch handling error, release the switch before EXP is over.

■ Cable connection check between P802 (CnD board) and P106 (Mio board) ■ CnD Board Fuse check : F801 ■ Input power check (220VAC ±10% to P803 CnD board) ■ VF converter frequency check on CnD Board TP802 & 803 : Normal frequency is 75kHz (details of adjustment appear on service manual) ■ DC 5V check between TP803 & TP804 on CnD board ■ DC 12V check between TP803 & TP805 on CnD board ■ Input power check to IC7812(U804) – should be 15VDC ■ Fuse F701(250V 10A) check on MIO Board ■ Anode stator coil check on MIO Board P710 (C-M : 27.5Ω, C-S : 58Ω, M-S : 85.5Ω) ■ On Ready mode, check voltages between… (Mio board) TP105 & TP109 – should be 0.5V TP106 & TP109 – should be 0.5V ■ Check fuse F501(250V 3.15A) on FnD Board ■ Voltage check on P501 (FnD Board) pin 1&3 (AC 230 ±10%) ■ Voltage check on FnD Board TP400 & TP401 (DC 72V) –VR401 can adjust it. ■ Filament output voltage check on FnD Board P401 (Small: SF, COM 35V, Large: LF, COM 35V) ■ Check Tube Filament through Tube window. (on Ready mode) ■ Communication cable connection check between OP Console & Mio board ■ Voltage check (7.5VDC) between MIO Board U905 Heat sink & TP110 – VR901 can adjust it. ■ Voltage check between MIO Board U905 Heat sink & R915 (DC 5V) ■ LED light check D1, D2 on Mio board (DSP module) ■ Voltage check on MIO Board P901 pin 1-3 (AC 220V± 10%) ■ Connection check btw Ion Chamber & AEC Board ■ Voltage check on Console Board PCON1 pin 1 & 4 (7.5VDC ±0.2V) ■ Voltage check on Console Board C21 (7.5VDC ±0.1V) ■ Voltage check on Console Board C25 (5VDC ±0.1V) ■ Cable connection check btw Console Board & AEC Board ■ Voltage check on AEC Board btw U91 & TP91 (12VDC ±0.5V) ■ Voltage check on AEC Board btw U91 & TP53 (5VDC ±0.3V) ■ Operation check ■ Hand Switch function check ■ Ready, X-Ray switch check

1

Err

Over current at IGBT Driver IC

PrO O---

Err

Over current on IGBT Module

PrO -I--

Unstable power supply to IGBT Driver

Err PrO --P-

Err PrO---F Err Door

IC Go to page 40

Over current at Filament Go to page 41

Door open or switch failure Go to page 22

■ Voltage check on FnD Board P501 pin 1 & 3 (AC230V ±10%) ■ Voltage check on FnD Board TP500 & TP501 (DC 18V) ■ Voltage check on FnD Board U406 Heat Sink & L404 (DC 0.5V±0.1V) ■ Power OFF and check resistor value on FnD Board P502 pin 1 & 2, P502 3 & 4, P503 1 & 2, P503 3 & 4 (1 ㏀±50Ω) ■ Connection check btw FnD Board P504 & IGBT current sensor. ■ Check waveform btw FnD Board U519 pin 7 & U406 – VR502 can adjust it. ■ IGBT check ■ HVT badness ■ HV Cable badness ■ Tube failure ■ Check LED lights on FND Board D516, 517, 518 ■ FND Board Connector P501 voltage check (230VAC) ■ Relay check FND Board RL501 ■ Voltage check at FND Board btw Test point TP500 & 501 (18VDC ±0.2V) ■ Voltage check on FnD Board btw TP402 & U406 (DC 4.1V ~ DC 4.2V) ■ Connection check on GC-340 Board CON703 pin 14 & 15(Door). ■ Connection check on MIO Board P709 Door port and P711 GND condition. ■ Connection check on GC-340 Board CON703 pin 12, 13(Tube Temp) ■ Connection check on GC-340 Board CON703 pin 12, 13(Tube Temp) ■ Connection check on MIO Board P711 T1.TEMP, and GND connection check on P711. ■ Tube Temp sensor check ■ Tube Temp sensor wiring check ■ Change motor function check (Tube 1 & 2 change) ■ MIO Board P708 connection check ■ Short circuit at P708 pin 4, 5 and check error condition. (Error comes : Mio board problem, no error : Changer part problem)

Err tE-P

Tube overheat

Err C-Fb

R&F Changer failure or malfunctioning

Err to

No X-ray O.K signal from Tomo device..

■ Check Tomo device circuit and functions

o-t

TOMO device moves more than its

■ Change X-ray exposure time and re-test.

setting of EXP time.

2

Contents 1. Main Flow Chart    

…………………………………………………

2

Uncovered HF Generator Side view of generator Main power connections Another side of generator

…………………………………………………

7

………………………………………………… …………………………………………………

7 8

3. Signal Flow Block Diagram

…………………………………………………

9

4. OP console

…………………………………………………

10

5. Circuit Breaker

…………………………………………………

12

6. Mio board

…………………………………………………

13

7. CnD board

………………………………………………… …………………………………………………

22

8. FnD board

…………………………………………………

30

9. PSU check

…………………………………………………

41

2. Block diagram of Power Flow A. 220VAC Single Phase B. 380VAC Three Phase

Err CHA at PSU version

28

3

2. Signal flow block diagram

Main flow chart of HF-525Plus Generator Main circuit breaker (220VAC 100A) produces 220VAC to HF Generator  F1, F2 main fuses  RF noise filter  Main Transformer  220VAC input to Mio, FnD and CnD boards.

220VAC

Mio board  Control part of generator.  Communicating to OP console  Tube rotor control  DSP for data program

OP console  Power ON/OFF  Communication to Mio board (DSP module)  kV, mA, mAs setting Ready & Exposure

220VAC Hand switch 220VAC CND board  Make main capacitor charge with Power ON. st  1 step charge with RLY1 operation.  2nd step charge with RLY2 operation

FND board  Filament control (small or large focus)  IGBT Driving for tube.  X-ray exposure data comes from Mio board

Rotor check with Power ON

IGBT x 2 ea

Power to IGBT

1st step charge by CND board 310VDC from P805

Main Capacitors

220VAC out to SMC

SMC x 3ea (Semi Magnetic Contactor)

3 phase diode 2nd step charge by direct power

HV Transformer

X-ray tube



Mio board : RS232, ROTO, FILA CnD board : CHA FnD board : FILA, PRO_P (IGBT) OP console : RS232 or No functioning X-ray tube : FILA, ROTO

380VAC three phase power Generator has 3 main fuses

4

2. Signal flow block diagram

Uncovered HF Generator Introduction of each part’s location….

Terminal block (GC-340 board)

HV Transformer (HV Tank)

CnD board

AEC board

FnD board

Mio board

5

2. Signal flow block diagram

AEC board (optional)

Terminal block RF Filter

AC main power input (single phase or three phase)

Main Transformer High Speed (50kW only)

board

Main GND port

Side view of HF Generator GND connection is more than important..!! This is 3 phase input – 3 of main fuses (L1, L2, L3) In case of 3 phase power, input voltage should be 380VAC ~ 400VAC For single phase, input power voltage should be 200~240VAC to 2 main fuses.

Main circuit breaker in the X-ray room is very important since it will judge supplying electricity to HF Generator and the quality of input power (electricity) is affecting to X-ray quality directly. ECORAY strongly recommends 100~130A main circuit breaker for single phase Generators, 100A for 3 phase generators.

6

2. Signal flow block diagram

Three phase cables and GND cable

PWR R S T (L1,L2,L3) GND

Pic 1. Cables in Generator side

3 phase PWR lines from main Circuit Breaker. 380VAC output required.

Neutral is not in use!! (Neutral phase port)

Pic 2. Connections to main Circuit Breaker

7

2. Signal flow block diagram

Another side view of HF Generator

FnD board AEC board (optional) Main Capacitors

3 phase diode

IGBT module

Main SMC

Sub SMC

8

2. Signal flow block diagram

A. Generator with 220VAC single phase power input

off

on

off

on

1. Two 220VAC lines (from Circuit breaker) are connected to Mio board and FnD board. 2. The other 220VAC line goes to CnD board. The 220VAC is commutated to 310VDC. 310VDC charges the main capacitor. This is the first charge. st

3. Once the 1 step charge is done, the CnD board will turn on the Magnetic switch with 220VAC input to SMC. Then the 220VAC electricity from circuit breaker begins to charge the main capacitor again. This is the second charge. st When the voltage for charge reaches 80% (1 step charge), RLY2 on CnD board turns on to enable SMC. Then the 220VAC electricity from circuit breaker is commutated to 310VDC after passing through the 3phase diode. 310VDC charges main capacitor. This is the second charge.

9

2. Signal flow block diagram

B. Generator with 380VAC three phase

off

on

off

on

1. One 380VAC line from circuit breaker goes to transformer and is commutated to 220VAC. The 220VAC flows to Mio board, FnD board. Also 220VAC is used for CnD board to turn on the Magnetic switch. 2. The other 380VAC line flows to CnD board. It’s commutated to 537VDC. 537VDC charges the main capacitor. This is the first charge. 3. When you expose, the CnD board turns on the Magnetic switch. Then 380VAC from circuit breaker charges the main capacitor. This is the second charge. When the voltage for charge reaches 80%, CnD board turns on the Magnetic switch. Then the electricity from circuit breaker is commutated to 310VDC after passing through the 3 phase diode. The 310VDC charges main capacitor. This is the second charge.

10

2. Signal flow block diagram

FnD board OP Console breaker

Mio

HV

HV

board

tank

cable

Tube

CnD board

1. When you input any order on the OP console, OP console orders something to Mio board. 2. The Mio board orders the same thing to FnD and CnD board. Through that, Mio board checks whether FnD and CnD boards are ok or not . After checking, Mio board sends the feedback to the OP console. If there is a problem during this check, Err.Msg. shows up on the OP console. 3. Ex. Ready & Exposure Push ‘Ready’ on the OP console → ‘READY’ order flows to Mio board → Mio board passes ‘READY’ order to FnD & CnD board → FnD board heats the filament in the tube and makes the tube ready. (At the same time, after receiving READY order from Mio board, CnD board begins to charge the main capacitor This is the first charge) → Charging ‘Main Capacitor’ starts as soon as the console is turned on. It’s not related with ready situation. With pushing READY, Tube Anode Stator is checked automatically. If there is a problem, Error shows up on the console. If there is no problem during all above check, READY LED (Green) lights up on the OP console. If there is a problem, Err. Msg shows up. [If you bush EXPOSURE button, the above data process happens again] After pushing EXPOSURE, all data process stops till exposure is finished. When you input data (like kV, mA, time) into OP console, the data flows into the DSP module in Mio board. And the MIO board informs to FnD board how much heat electrons the filament should expose. [After the second charge of CnD board, the IGBT in the FnD board opens. After it opens, the high voltage (which is required for expose) flows to HV tank.] After the second charge of CnD Board is finished, IGBT of FnD opens. After IGBT opens, the voltage (which is required for X-ray exposure) will flows into High Voltage Trans former. The voltage is boosted through coils in the HV transformer. The boosted voltage flows to X-ray tube. 11

3. OP CONSOLE 1. Functions You can input many kinds of orders for exposing X-ray kV, mA, mAs / time Ready , Exposure Selection of Wall bucky detector or Table bucky detector AEC selection APR function selection Err. Msg. display

2. Error (related with console) OP CONSOLE Mio board This happens when there is a communication problem between OP console and Mio board. When there is a problem on the OP console, OP console cannot transfer any orders to Mio board. In this case, the error shows up.If there is a problem on the cable, data cannot be transferred. Therefore the Error shows up. If Mio has a problem, the Error shows up, because the Mio board cannot process the data from OP console.

 Error 232

 Solution OP console If OP console has a problem, please disconnect OP console from the generator, and connect the console with the callibration computer program with the communication cable. If the OP console works well under this situation, it means OP console has a problem. Therefore replacement needs.

Cable Replacement of the cable which is damaged during transportation

12

3. OP CONSOLE Mio board When Err 232 happens because of Mio board, the DSP module in the Mio board becomes too hot. If DSP module is too hot, Mio needs to be replaced.



From XR5 version, there is another DSP module inside of OP console PCB.

Need to check for RS232 error… 1. 2. 3. 4.

Signal cable connection between OP console and Generator (Mio board) Mio board itself (specially at DSP module) – go to Mio board section for more info. OP console (specially at DSP module or inside film type PCB connector) Any system noise can interfere the communication and system GND is important.

13

4. Circuit Breaker You need a suitable circuit breaker for using X-ray system which requires high voltage. 1. 32KW system 32kW needs to use this system. Therefore, 220VAC, 110A circuit breaker is required. The inner capacitor in the Generator has the capacity of about 8kW.

2. 40kW system In the case of single phase, we recommend 220VAC, 130A circuit breaker. At least, 220VAC, 130A circuit breaker needs. In the case of three phase, we recommend 380VAC, 105A circuit breaker. At least, 380VAC, 80A circuit breaker needs.

3. 50kW system We recommend 380VAC, 130A circuit breaker. At least, 380VAC, 100A circuit breaker needs. If the electricity in the hospital is not enough, you can use the X-ray system with PSU. PSU is available with 32KW and 40KW system. For using the system with PSU, at least, 220VAC, 10A circuit breaker is required. If the electricity is less than our recommend above, you can get a unclear X-ray image (by not enough X-ray exposure) or the circuit breaker shut down.

Summary  Single phase generators (32, 40kW) require minimum 100A main circuit breakers.  Three phase generators for 32, 40kW require minimum 80A main circuit breakers.  50kW generators require 100A main circuit breaker at least. (380V three phase only)

Note Lack of electricity by lower circuit breaker than recommended can bring different malfunctioning of units. HF Generator would be harmed by unexpected current or voltage rush or shortage. 

In case the local electricity (AC input voltage) is not stable, we strongly recommend you to install AVR (Automatic Voltage Regulator) which will make the input voltage to HF Generator stable. There are several selections in the market. (just refer following 2 suppliers for it) Please visit following web site for your reference. http://www.stabilizer-china.com/TNS-Series-AC-Automatic-Voltage-Regulator-15-90KVA.html http://www.powerengineers-india.com/automatic-voltage-stabilizers.html 30KVA AVR is recommended for 32, 40kW generator, 40KVA AVR is good for 50kW generator.

14

5. Mio board

1. Function Mio board checks each boards according to OP console commands, and send the feed-back to OP console.

 If you turn on the OP console? Mio board makes the Tube rotor running. Therefore, you can hear the rotor spinning sound about 4 seconds after you turn on the OP console.

 If you push READY on the OP console? Operator push buttons on OP console, and then OP console gives commands to Mio board. Mio board transfers READY commands to FnD board and CnD board, and checks each boards. After checking, Mio board gives the feed-back to OP console. When FnD board has a problem, ERROR FILA, PRO-I, PRO-P, or PRO-O shows up on the console. When CnD board has a problem, ERROR CHA shows up. (In this section we only explain about Mio boards, and the other boards will be treated in other sections.)

2. Error (related with Mio board)  Error ROTOR Error Rotor shows up when rotor in the tube doesn’t run properly. There are two reasons of this matter. -

When the rotor in the Tube actually doesn’t run. This case can be happened when the required electricity for rotor is not provided. Misconnection of Rotor cable can bring this result.

-

When Error Rotor shows up, although the rotor runs well. This case is considered as the rotor sensor problem.

 Solution When the rotor in the Tube actually doesn’t run -

F701 (250V10A Fuse) Check for AC COM signal.

-

Error Rotor happens when Rotor Start Capacitor doesn’t works properly. Please check Rotor Start Capacitor connection (P706 Check for 250VAC)

-

For checking whether or not the required electricity flows to Rotor, please check P703 Measuring Resistance

-

Point

Result

C-M

27.5 Ω

C-S

58 Ω

M-S

85.5 Ω

If the measured resistance is not like above, it means Rotor connection is wrong. So, please reconnect the Tube side cables like below picture.

15

5. Mio board

16

5. Mio board

Usually, the Rotor cables are already connected in the factory before the shipment.

Measuring C-S-M value on the connector. (see following photos)

17

5. Mio board

18

5. Mio board

The same measurements are available on Generator side. (GC-340 board)

19

5. Mio board

-

For more accurate verification, Please check the contact of the Handle bar connector. The cable (which is connected to the handle bar) comes from Mio board. If it’s not connected properly, it effects to Mio board functioning.

When Error Rotor shows up, although the rotor runs well. Check the below points, because Mio board has a problem to sensor Rotor. When you measure the voltage of TP105 and 106, it should be 1.5V with pushing READY, and 1.5V becomes 0.5 ~ 0.7V soon. (READY time is very short. So please attention when you measure) If voltage is not like above, please turn VR701 for TP105and VR702 for TP106.

20

5. Mio board  Check Points

TP105

TP109 TP106

P703

P706 F701

 Check List Please, fill in the Remark Box about Err. Roto of conditions on the Mio board. Check Point F701 P706 Rotor connection

Normal conditions Alive 250VAC Well connected

Tube Cable

Well connected

Remark

Handle bar connection TP105 – TP109



Well connected - ready : 1.5V If voltage is not normal, - later : 0.5V – 0.7V please adjust VR701 TP106 – TP109 - ready : 1.5V If voltage is not normal, - later : 0.5V – 0.7V please adjust VR702 More than 80% of ROTO error comes from connector problem on Handle Bar PCB.

21

5. Mio board  DOOR error In the connector PCB (Terminal Block, GC-340 board) in HF Generator, DOOR ports are under Tube Support Unit section – factory setting is short-circuited by a jumper. If it is open circuit, the generator would produce Err DOOR when it is power ON.

This should be short circuited..!!

And check Mio board wiring also (see next page)

22

5. Mio board Mio board wire connection… (DOOR jumper is connected to Mio board… at DOOR and GND) If this is not working, just make a jumper wire between DOOR & GND

23

6. CnD board

1. Function and Principle Main capacitor charge the voltage for X-ray exposure. Charging is done by 2 steps.

(This picture is for three phase)

 First Charge When you push READY on the OP console, READY signal flows to Mio board and then to CnD board. CnD board begins to charge according to Ready signal. -

380VAC from Circuit breaker flows directly to CnD board. And then it is commutated to 520VDC by bridge diode. Main capacitor is charged with the 520VDC.

-

In case of 32 or 40kW generator, the Charge voltage is 310~350VDC

-

If 520VDC is provided properly, it means that main capacitor is well charged by 75kHZ.

-

With the first charge, 70% of main capacitor is charged.

 Second Charge When you push EXPOSURE on the OP console, EXPOSURE signal flows to CnD board and then to Mio board. CnD board begins to charge according to EXPOSURE signal. -

If the first charge is done well, 220VAC which is changed by transformer is used for running the magnetic switch of CnD board.

-

After the first charge, the second charge is available with turning on the Magnetic switch.

-

After the second charge, the voltage in the main capacitor flows to HV tank when IGBT on the FnD board is turned on.

-

Main capacitor sends voltage to HV tank. HV tank boosts the voltage as much as it needs, up to max. 125kV or 150kV. And then HV tank send the voltage to the filament of tube.

24

6. CnD board

CND board

 Frequency feedback As informed above, the charged voltage in the main capacitor is shown as 75kHZ or 6V. Standard point

Standard point

Standard point

75kHz↓

75kHz

75kHz↑

Low voltage

Input voltage

High voltage

520↓, 380↓

520VDC, 380VAC

520↑, 380↑

Ideal voltage

As above diagram, the best status of voltage is 380VAC. Therefore, you can check the status of the voltage for capacitor with measuring 75kHZ or 6V. If the voltage is lower than 520V (520V needs for the first charge), Error CHA can show up. If 25

6. CnD board it’s not available to supply 520VDC, you can adjust 75kHz or 6V to the voltage at site. With this process, you can solve Error CHA. If, the voltage is over 550VDC for the first charge, Error CHA shows up, and you will get the result over 75kHZ or 6V. You can solve Error CHA with setting it as 75kHz or 6V. 75kHz and 6V is the best status for charge.

 Note! Before going deep into CnD board itself, it is fully necessary to make sure about main input power. Since most of CHA errors are coming with lack of input power (specially at Voltage) Check if CHA error comes intermittently… if yes, need to check input power side first in the room main circuit breaker facility. X-ray room should provide correct main circuit breaker with appropriate power voltage. If CHA error comes during booting sequence, please pay attention to CnD board capacitor charging block. (CnD board input & output)

If CnD board does not produce 75kHz, system considers there is input power problem and does not continue main capacitor charge process, and booting will stop then creates Err CHA.

26

6. CnD board

2. Error related with CnD board  Error CHA Reason for Error CHA -

When CnD board doesn’t work well Please check each part on CnD board. If something doesn’t works well, CnD board needs to be replaced. Error CHA may shows up, if the signal doesn’t flows well from Mio board to CnD board. In this case, you need to check the cable between Mio board and CnD board (FLAT CABLE Connection)

-

When input voltage (which goes to Capacitor) is not correct If the frequency feedback is not 75kHZ, Error CHA can happen. If Bridge diode cannot commutate the voltage, DC cannot flow to main capacitor. In this case Error CHA can show up.

 Solution -

When CnD board doesn’t work well  Please check 5V between TP805 – TP803 on the CnD board before turning on the OP console. If 5V is checked, the 5V is converted to 15V through DC-DC converter. If it’s converted well to 15V, D817 LED (green) lights up. If the LED doesn’t light up, the board needs to be replaced.  And then please turn on the OP console, and check the input voltage in P803 on the CnD board. (If single phase, it should be 220VAC, if three phase it should be 380VAC)  You need to check 220V which runs Magnetic switch, to find out whether Magnetic switch works well or not. Finally please check 12V between TP804 – TP803, which is for running Relay

-

When input voltage (which goes to Capacitor) is not correct  Regarding Error CHA, frequency is the cause which happens most frequently. Different frequency feedback result may comes out, because the input voltage is changed according to the electricity in each hospitals. You can adjust TP803 & 802 as 75kHz after checking frequency. If you have not the frequency tester, please measure and adjust the voltage between VFC IN and U804 cover(chassis) as 6V. For adjusting the frequency, like below picture, you need to turn VR801 with keeping pushing L.Volt switch. Turn VR802 with keeping pushing C.Volt switch as well. Those two frequency should be 75khZ or 6V, to solve Err. CHA.  If fuse 801 is dead, bridge diode doesn’t work well. You need to replace the Fuse 801.

27

6. CnD board



Check Points U804 (GND) Cap(+)

R844 Cap(-)

D817 LED

Green

D816 Red LED

Input Voltage 220VAC TP804 TP805 TP802 TP803

VR801

VR802

28

6. CnD board  Check List Please, fill in the Remark Box about Err. CHA of conditions on the CnD board. Check Point Normal conditions Remark Voltage Check (TP804 – TP803)

12V

Voltage Check (TP805 – TP803)

5V

D816 LED (red)

ON

D817 LED (green)

ON

Power Input Voltage (P803)

220VAC ±10%

Output Voltage (P805 Pin 1 & 4)

310VDC ( 290-330VDC )

Voltage Check (TP802 – TP803) Or VFC IN – U804

Check Main Transformer port incase 220VAC is not enough.

75kHZ 5.8VDC ~ 6.1VDC

L.Volt : C.Volt : L.Volt : C.Volt :

Main Transformer check points ; if main input voltage to HF Generator is lower than 205VAC, it would not transfer quality 220V to CnD board then CnD board will produce Err CHA because the the board is not having operational power. Since Main Transformer is making discount little bit from input and make output 5~8% less power to each board because when input power is over 240VAC, the supplying voltage to boards without discount can damage the boards. If main input power voltage is weak, you can adjust Main Transformer output ports as follow. (please find the main transformer location at page 4) Factory setting at INPUT side (in case of 220VAC single phase) ; 240VAC, 0VAC Need to move input 240VAC port to 220VAC In the same way, if they provide 400 or more VAC power input for 3 phase, please move the input port to correct position since Factory setting is at 380VAC.

Output side

Input side

29

6. CnD board

Err CHA in PSU version A. Problem details Error CHA” appears when it is turned ON. B. What to check 1. Check if circuit breaker is OFF on the rear side of generator. If it is OFF, turn it ON – battery power does not come to generator with the circuit breaker OFF and makes Errror ‘CHA’ (please see the picture below)

Circuit breaker

2. Actual charge error - Time of usage : when you make quick X-ray exposure after turn ON, the error could be happened.

30

6. CnD board

3. Charge Board check. Error Charge

P805

F801

P803 P804

RL801 RL802 TP802 TP803

VR801

Power Off

Power ON

D804 (LED)

ON

ON

P805 Pin3,4

300~350Vdc

300~350Vdc

RL801

Off

ON  (after 2~3 sec) Off

RL802

Off

P803

220VAC Input

TP802TP803

75kHz check

Off  ON (after RL801 goes OFF) 220VAC Input Adjust VR801, VR802 - Turn it right (clock-wise)

VR802

Check result

If not good 220VAC check on P803 Check F801 Check battery circuit breaker itself Adjust 75kHz – see the Manual Adjust 75kHz – see the Manual

If there is no frequency detector, check the voltage between VFC IN “C”(U804 Chassis) and its voltage is 5.8~6.1 Vdc is normal.

31

FnD board

1. Main operating flow chart

380VAC

380VAC→220VAC 220VAC→220VAC

380VAC three phase 220VAC single phase Signal 220VAC single phase: Direct 380VAC three phase: Indirect converting 220VAC by transformer

2. FnD board function Control current capacity (mA) of tube filament obtained from Mio board input value Choose focal spot between small and large according to current capacity (mA). Control Drive Section related with IGBT capacity and high voltage supplying to HV tank.

3. Error code and main cause  FILA Error -

Problem with FnD board

-

Input power problem

-

Filament stator voltage problem

-

Filament output voltage problem

 Problem with tube -

Tube connection and cable problem

 Problem with calibration data -

PRO-P Error IGBT problem

-

PRO-F Error Tube current problem

32

FnD board

4. Technical solution and check point  FILA Error -

Problem with FnD board Check input power( AC 220 ±10% ) Filament operation voltage check at TP400-TP401 ( DC 72V ) If it is not 72V, adjust a VR401 nearby -> Clockwise: gain / Counterclockwise: lose 1-3) Filament output voltage check at P401 (DC 35V) see the photo below For Small focus pin 43: DC35V For Large focus pin 42 : DC35V 1-4) D517, D518, D519 green LED check

 FnD board check points

LED D517, 518, 519

72VDC (TP400 – 401) Input power 220VAC

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IGBT connectors

Connector P401 (output from FnD board) Measure the output voltage from pins 4 – 3 should be 35VDC 4 – 2 should be 35VDC

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FnD board  Problem with tube -

TUBE check point

Connect HV cable to tube side only, and measure resistor value on the tip at the other end of cable (HV Tank side) – open the HV cable from HV tank in generator. Measure it from Cathode cable (-) Test R(Ω) Point S-C 0.1Ω or less S-L 0.1Ω or less L-S 0.1Ω or less S : Small Focus , L : Large Focus , C : Common

If the resistor value is not O.K, it is necessary to replace whole HV cable and test the same again. (in order to check if HV cable itself) – sometimes, ‘Err FILA’ is coming along with HV cable badness or loosen connection.

34

FnD board

Take the Cathode (-) cable out from the HV Tank, then measure the resister value of Common – Large – Small….

35

FnD board

36

FnD board

If the resistor () value is not quite big, the inside contact is being considered as good. Sometimes,

the

resistor

values

come

strange

due

to

HV

cable

problem

itself.

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FnD board

Once you remove the collimator, you can see Filament light by your own eyes. Above photo is the light of Small Filament (normal situation) Generally, the light is very bright during READY, so in case the Filament is not getting bright, there is a problem to be fixed. Following photo shows ‘Large’ filament.

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FnD board

-

Power test on FnD board

P401 Open

Power ON with pressing ‘Small focus’ + PWR ON key (press both keys!!) Power ON

D516 D517 D518

NG ON

OK F501 Check

TP400,401 DC 72V out

NG

OK

Check output signal (waveform) by using an oscilloscope

P401 Filament Out

NG Q402,403 Check

OK

P401 HV Trans connection

FnD Board to be replaced with a new one

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FnD board  PRO-P Error -

Connector check point (IGBT check) Open the connectors P502 & P503 from FnD board

4

3

2

1

And check the resistor values like below chart. (by a multimeter, R range) Check the both P502 and P503 Point 1-2 3-4

Normal value 1 kΩ 5% 1 kΩ 5%

If the detected resistance values are not in the normal range, it is suspected that IGBT module is out of order.

40

FnD board

-

FnD Board Check point

-

Error PRO-F Filament is working actually but the current engaging to Filament is too high. (Current Over Error) The VR should be adjusted. Before doing this, check if the unit is working correctly at low kV & mA like 40kV, 100mA…. If the problem has shown at high kV & mA, it is necessary to make No.3 action first..

The resistance 2.2Ω

TP500-501 DC 18V

41

FnD board

Details. Adjust Filament Current Level. Turn VR402 (counterclockwise) to minimum end.

VR402

L405

 If the error comes only at lower kV & mA, please remove L405 (coil) and test the unit.

42

PSU check

What to check on PSU battery pack. ● it is necessary to find out the cause of the problem on PSU board. ● Before you change PSU Board, we must check if Battery module itself is O.K or not. Otherwise, we will have the same problem again with a new PSU board. ● Please check the Battery pack as you see below points, and send the checking result to us quickly. ● How to check 1) Turn off the machine completely. (POWER OFF). 2) Measure the output voltage from pin to pin…. See the normal range of voltage at each point in the table below. - All the pins (1-2, 2-3, 3-4, 4-5, …… 10-11, 11-12, 12-13, 13-14) should give 24~26VDC outputs. - Please tell me its output voltages. . voltage between pin 1 & 14 should be 320~360VDC Point 12

Result to be 24~26VDC

23

24~26VDC

34

24~26VDC

13  14

24~26VDC

1  14

320~360VDC

See the picture at next page. 14

1

43

PSU check 

Check all fuses are O.K, if one or more fuses are blown, need to check nearby IC on black heat sink. If a IC is dead, it would kill the fuse again.



Even 350VDC is coming O.K from PSU board, Generator can still produce Err CHA. In this case, remove the connection from battery packs (2 layers) then check the same measurement from 1 to 14 ports on PSU board.



There are 15 LEDs on the board, once AC power connected, all LED would be ON. And when power cord is off, LED 1 & 8 will be OFF. Other LEDs are ON as long as battery packs are good.

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