41285901TH Rev.3
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DN5: ACTION Item:
Probable cause 1:
Check item 1:
Probable cause 2:
Check item 2:
Probable cause 3:
Check item 3:
Probable cause 1:
Check item 1:
Probable cause 2:
Check item 2:
Probable cause 3:
Check item 3:
Probable cause 4:
Check item 4:
Probable cause 5:
Check item 5:
Probable cause 1:
Check item 1:
Probable cause 1:
Check item 1:
Probable cause 2:
Check item 2:
Probable cause 3:
Check item 3:
Probable cause 1:
Check item 1:
Probable cause 1:
Check item 1:
Probable cause 1:
Check item 1:
Probable cause 2:
Check item 2:
No incoming signal at RI-N.
Check the CN3-4 pin with an oscillosope (when the ringing signal arrives at the
line). If a signal exists at RI-N, a part other than this board may be faulty. If no
signal is detected, go to the next probable cause.
Incorrect DIPSW setting.
Check the setting of DIPSW S1.
IC1 defect.
Replace IC1.
Incorrect DIPSW setting.
Correct DIPSW S4 according to the DIPSW setting table.
DC loop not formed at the time of DTMF dialing.
Check if a DC loop is formed at the time of DTMF call origination.
If not, either of the following parts may be defective. Replace them one by one.
IC5, Q3, DB1, IC10, RL1
RL6 defect.
Replace RL6.
RL3 defect. (When both transmission and receiving fail.)
Replace RL3.
T1 defect. (When both transmission and receiving fail.)
Replace T1.
DC loop not formed at the time of DP dialing.
Check if a DC loop is formed at the time of DP dialing.
If not, either of the following parts may be defective. Replace them one by one.
IC5, Q3, DB1, IC10, RL1
Incorrect DIPSW setting.
Correct DIPSW S4 according to the DIPSW setting table..
DC loop not formed.
Check if a DC loop is formed. If not, either of the following parts may be defective.
Replace them one by one.
IC5, Q3, DB1, IC10, RL1
T1 defect. (When both transmission and receiving fail.)
Replace T1.
RL6 defect.
Replace RL6.
A trouble with other than this board.
Check other than this board.
OH2-N signal failure.
Check CN3-2 pin with an oscillosope.
Normal if 0V upon going off-hook at the externally connected telephone.
If other than 0V, go to the next probable vause.
IC2 or RL7 defect.
Replace IC2 or RL7.
No.
ACTION
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Содержание OKIFAX 5750
Страница 100: ...41285901TH Rev 3 100 NIC CONFIGURATION TYPE 2 09 22 2000 16 54 ID OKIDATA CORP E8S FAX MFP S W...
Страница 101: ...41285901TH Rev 3 101 1 6 21 NIC Information...
Страница 118: ...41285901TH Rev 3 118 3 Document stacker Hang the document stacker onto hanging position...
Страница 274: ...41285901TH Rev 3 274 Appearance of the OKIFAX 5750 5950...
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Страница 669: ...41285901TH Rev 3 669 1 2 3 4 5 6 7 8 9 1 2 3 4 1 2 3 HS1 CN2 CN1 HOOK Circuit Diagram 3SS5003 6263...
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Страница 688: ...41285901TH Rev 3 688 Appendix D MECHANICAL EXPANDED VIEW DRAWING AND PARTS LIST Section 1 CABINET ASSEMBLY...
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Страница 692: ...41285901TH Rev 3 692 Section 3 PRINTER ASSEMBLY...
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Страница 704: ...41285901TH Rev 3 704 Appendix E BOARD LAYOUT OKIFAX 5750 5950...
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