Troubleshooting Guide
■MODEL : BG8000ER, WG8000RY4, WG1000RY4
ELECTRIC PARTS TROUBLESHOOTING GUIDE:
Possible Trouble 1
Is the Trans input power AC 115V?
YES
Is the Trans output power
about AC 14V?
YES
Is output Voltage of IC01D
DC 12V?
YES
Is output Voltage of IC02D
DC 5V?
YES
• The unit does not operate.
NO |
| • Check the Fuse. |
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| • Check the wiring diagram. |
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NO | Is shorted the Trans. output? | NO |
| • Check the Main |
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| P.W.B pattern. |
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| YES |
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| • Exchange the Trans. |
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NO |
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| • Exchange D02D~D05D. |
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| • Exchange IC01D. |
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NO | • Exchange IC02D. |
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Is the reset circuit all right? | NO | |
(The No.14 of Micom |
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is 5V.) |
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| YES |
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Is the
connection between NO Main and Display
• Exchange IC01A.
• Connect connector |
exactly. |
all right?
YES
Is the voltage No.18 of Micom
DC 5V?
YES
Exchange Main P.W.B Ass'y. 
NO
• Check the P.W.B |
pattern. |
Service Manual 22
