Dell 2355DN Service Manual - Page 81

a FAX/TELEPHONE Precautions, 3.2.2 FAX

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Alignment and Troubleshooting 4.3.2.2 FAX 4.3.2.2(a) FAX/TELEPHONE Precautions PROBLEM ITEMS TO BE CHECKED TEL LINE CANNOT BE ENGAGED (NO DIAL TONE) • When you press " OHD" key: a) Check line cord connection. Cannot MF dial • Check MAIN-LIU harness. MF dial is possible but not DP dial. • Check the main PBA. Defective fax transmission • Check MAIN LIU harness. • Check 'hook off' : Refer to 'TEL LINE CANNOT BE ENGAGED' above. Defective automatic fax reception • Is the ring checked? • Refer to 'Defective Transmission.' HOW TO SOLVE a) insert it correctly into the connection jack called "line". b) Replace defective parts. • Replace defective parts. • Replace main PBA. • Replace defective parts. • Refer to 'TEL LINE CANNOT BE ENGAGED' above. • Replace main PBA, if abnormal. • Refer to 'Defective Transmission'. 4-41 Service Manual

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Alignment and Troubleshooting
4-41
Service Manual
4.3.2.2 FAX
4.3.2.2(a) FAX/TELEPHONE Precautions
PROBLEM
ITEMS TO BE CHECKED
HOW TO SOLVE
TEL LINE
CANNOT BE
ENGAGED
(NO DIAL TONE)
• When you press “ OHD” key:
a) Check line cord connection.
a)
insert it correctly into the connection jack
called “line”.
b) Replace defective parts.
Cannot MF dial
• Check MAIN-LIU harness.
• Replace defective parts.
MF dial is
possible but
not DP dial.
•
Check the main PBA.
• Replace main PBA.
Defective fax
transmission
• Check MAIN LIU harness.
•
Check ‘hook off’ : Refer to ‘TEL
LINE CANNOT BE ENGAGED’
above.
• Replace defective parts.
•
Refer to ‘TEL LINE CANNOT BE ENGAGED’
above.
• Replace main PBA, if abnormal.
Defective
automatic fax
reception
• Is the ring checked?
• Refer to ‘Defective Transmission.’
• Refer to ‘Defective Transmission’.