51 0 142KB
When the error F1 has occurred
Checked –15V in VT60-3FF PCB
No
Checked 100V in T1 Transformer No
Yes Replace SYSTEMLF30 PCB
Yes Replace VT60-3FF PCB
Check Fuse 100V Replace T1 Transformer
Chó ý: 1/. Th¸o J79 trªn ANALOG-LF30, J73 trªn SYSTEM-LF30, kiÓm tra ®iÖn ¸p ra trªn PS1 cña VT60-3FF. 2/. KiÓm tra d©y dÉn, cã thÓ bÞ ch¹m vá ë b¶n lÒ xoay m¶ng System.
When the error F2 has occurred
Checked MG-RS
Abnormal Replace MG-RS
Normal
Checked VC+, VC- on Analog LF-30
VC+ abnormal
Checked D55 and IC PC2, Adjusment VP1 about 2.8V
VC+ abnormal Checked D54 and IC PC1, Adjusment VP2 about 2.8V
Chó ý: - Check VC+; VC- (ANALOG-LF30, page 23/27) - Check VP1, VP2: 2.8V/ t−¬ng ®−¬ng 280VDC trªn VC+, VC- vµ VC0 VP: 5.6V/ t−¬ng ®−¬ng 560VDC trªn VC+ vµ VCAdjust VP1 by VR15; VP2 by VR16 (ANALOG-LF30, page 9/27) - Check power supply: 380V; AIN-1,2 on T1 transformer
When the error F3 has occurred
Reset NEXSC
Abnormal
Replace NEXSC
Normal
System LF-30 Checked RmA, RkV
Abnormal Replace System LF-30
Normal
Analog LF-30 Checked PKV, TKV, RMA, TMA, IFV
Abnormal
Replace Analog LF-30(Check IGBT gate wave form)
Normal
Replace HT cable Then checked
If phenomenon not changed changed
If phenomenon changed
Replace HT cable Is defective
If phenomenon not changed changed
Replace X-ray Tube Then checked
If phenomenon changed Replace X-ray Tube Is defective
If phenomenon not changed changed Replace HT Transformer Chó ý: 1/.SYSTEM-LF30 Gi¸ trÞ chuyÓn ®æi tõ Digital -> Analog - RkV (CP9): §Æt kV chôp 100kV: 5.00V VR11 - RmA (CP10): §Æt mA chôp 200mA: 1V VR10 - FVR (CP11): 5V/5A - FkV (CP8): §Æt kV chôp 80kV: 4.00V - FVF (CP4): §Æt dßng chiÕu 3.15A: 3.15V - LMT (CP5): 5V/5A 2/. ANALOG-LF30 - IFL: CP38 dßng ®èt tãc lín: sau khi bËt m¸y 2A - IFV CP44 : dßng ®èt tãc chung, khi Ready t−¬ng ®−¬ng gi¸ trÞ FVR - Check Waveform CL,CO (Page 33 – Service manual) 3/. Cable, X-ray tube
When the error F4 has occurred Abnormal Reset NEXSC
Replace NEXSC
Normal
Checked RKV on System LF-30
Abnormal
Replace System LF-30
Normal Replace Analog LF-30
1/. ANALOG-LF30 Gi¸ trÞ chuyÓn ®æi tõ Digital -> Analog - G¹t SW3-8, chän mode PKV (Page 3-70, Installation manual) - PkV (CP6): §Æt kV chôp 150kV: 7.50V (Page 3/27 Circuit) NÕu > 7.85V xuÊt hiÖn F4
F5 ( TKV Under): - Khi GÆp lçi F5 cã ta kiÓm tra theo c¸c b−íc:
Cã KiÓm tra cÇu ch× 600 FH 100 ( t¹i khèi Inverter xem cã bÞ ®øt
IGBT bÞ háng
(1)
Khi thay IGBT chó y * kh«ng
Cã KiÓm tra Tô cã n¹p b×nh th−êng kh«ng?
kh«ng
KiÓm tra r¬ le MG RS cã lµm viÖc kh«ng, c¸c §iÖn trë gi¶m xung ®· §c ng¾n m¹ch ch−a?
kh«ng
(2)
KiÓm tra tÝn hiÖu J203
Cã
kh«ng R¬ le MG D ®· lµm viÖc ch−a?§iÖn trë x¶ tô RC+/RC- cã bt kh«ng?
KiÓm tra tÝn hiÖu J201
(3)
Cã
kh«ng KiÓm tra d¹ng sãng më cho IGBT: CP16(AD), CP17 (BC) trªn Analog LF 30
Installation manual page 4-20
Analog LF 30 háng
Cã thÓ ®iÒu chØnh ®é Cã
réng xung BC vµ AD( 10 micro s) b»ng VR12
(4) KiÓm tra d¹ng sãng cña Gate Driver 96 ( Theo c¸c b−íc trong installation manual page 4-25)
B×nh th−êng
Thay khèi IGBT vµ Gate driver
bÊt th−êng G¹t S2-5, S3-8 (Nexsc), do CP23 trªn Analog LF 30 (5V/5A)
Háng SYSTEM LF 30 PCB
B×nh th−êng
G¹t S2-2 (ng¾t dßng ph¶n håi) trªn m¶ng Analog LF 30
F5 vÉn kh«ng mÊt
KiÓm tra r¬ le K2 trªn m¶ng DETECTOR 96 bÊt th−êng BÊt th−êng
B×nh th−êng
Thay r¬ re K2 trªn m¶ng DETECTOR 96 PCB kiÓm tra d¹ng sãng cña m¹ch ®èt tãc (Service manual page 33 to page 39)
bÊt th−êng Háng Analog LF 30 PCB
B×nh th−êng
bÊt th−êng KiÓm tra d¹ng sãng KV=/ KV – ( Installation manual PhÇn 4.14.3 (page 4-28)
K.Tra LD1 trªn m¶ng Analog LF 30 sang?
Kh«ng
Cã KiÓm tra SystemLF 30 PCB,Nexsc PCB
BÊt th−êng
Háng Analog LF 30 PCB
Dïng Secondary Volmeter ( alkor meter) kiÓm tra c¸p cao thÕ
Thay c¸p cao thÕ
NÕu hiÖn t−îng thay ®æi, C¸p cao thÕ háng HiÖn t−îng kh«ng thay ®æi
Thay Bãng X Quang
Bãng X Quang bÞ háng
NÕu hiÖn t−îng thay ®æi HiÖn t−îng kh«ng thay ®æi
Thay thïng cao thÕ
F6 (Stater break). - Khi mÊt nguån cho phÇn khëi ®éng (cÇu ch× F50, F 125 trªn T1 bÞ ®øt, connector JS2 bÞ láng) F7 ( Line voltage over). - KiÓm tra ®iÖn ¸p t¹i CP55 – CP GND ( 5V/100V) = ? - KiÓm tra ®iÖn ¸p gi÷a R203 vµ R204 = ? ( 6,08V) - §iÖn ¸p chuÈn - KiÓm tra ®iÖn ¸p gi÷a R195 vµ R194 = ? ( 3,5V) - §iÖn ¸p chuÈn. - Xem ®iÖn ¸p t¹i CP 55 cã n»m trong kho¶ng cho phÐp kh«ng?(tõ 3,5V tíi 6,1 V). - NÕu ®iÖn ¸p CP55 › 6,08V: §iÒu chØnh gi¶m ®iÖn ¸p nguån t¹i biÕn thÕ T1 vµ T2 - NÕu ®iÖn ¸p CP55 ‹ 3,5V: §iÒu chØnh t¨ng ®iÖn ¸p nguån t¹i biÕn thÕ T1 vµ T2. - §iÖn ¸p 3 pha vµo: mÊt 1 pha b¸o lçi F7( TTYT Th−êng TÝn)
When the error : H.V.T not connected ( The connection status between a high voltage transformer is abnomal ) “ F8 “ :
HV Trans not connected
Check Fuse 600FH-100
Abnormal
IGBT damaged Replace IGBT
Normal
Normal
Check primary capacitors charged
Normal
Check MGRS
Abnormal
Check signal of J203
Normal
Check MG-D & RC+/RC-
Check CP16(B/C) & CP17(A/D) on Analog-LF30
Abnormal
Abnormal
Check signal of J201 Ch k RC /RC
Replace AnalogLF30
Normal Abnormal
Check waveform of Gate Driver-96
Check FVR Check 5V/5A at CP23 on Analog-
Replace IGBT in the block including. ( Ref.Installation manual 4.23)
Abnormal
Replace SYSTEMLF30
SW2-2:OFF on Analog-LF30
Abnormal
Error occurs ? Yes
Abnormal
Check K2 on mA Detector-96
Replace K2 on mA Detector-96
Yes
Check cycle & pulse width of heating
Abnormal
Check KV+/KV-
Normal
Replace AnalogLF30
Is TOV lit while nothing is input to TOV detection circuit(LD1)?
Abnormal Yes
No
Yes Replace HT Cable
Not changed Replace XRay Tube Not changed Replace HT Transformer
Replace Analog_LF30
No Exchange SYSTEM-LF30 & Nexsc
* When the error : The Radio over current ( Radiographic tube current is more than set value + 200mA ) “ F9 “ :
Radiographic over current
Reset Nexsc PCB
Abnormal
Replace Nexsc PCB
Normal
Check FVR Installation manual (3.6)
Abnormal
Check Feedback
Abnormal
Installation manual
Replace AnalogLF30
Normal
Check mA Detector96
Abnormal
Replace mA Detector-96
Normal
Check HT Transformer
Abnormal
Replace HT Transforme
* When the error : The Fluoroscopic over current (The Fluoroscopic tube current is more than 10mA ) “ F10 “ :
Fluroscopic over current
Check AMA(CP76), FOC on Analog-
Abnormal
Replace AnalogLF30
Normal
Check Pulse Fluo Circuit(FULTR) on SYSTEM-
Abnormal
Replace SYSTEM-LF30