Ricoh AC205 Service Manual - Page 114
Fax And Phone Problems, No Dial Tone, Defective Mf Dial
View all Ricoh AC205 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 114 highlights
FAX AND PHONE PROBLEMS 4.6 FAX AND PHONE PROBLEMS 4.6.1 NO DIAL TONE Description: No dial tone when the "On-Hook Dial" (OHD) button is pressed. Cause Solution 1. Telephone line cord is not securely connected to the TEL LINE. 2. No "click" sound is heard when the OHD key is pressed. 3. Faulty harness connection between the LIU and the main board. 4. Speaker is not correctly connected. 1. Test the wall socket by plugging in a standard telephone. Replace the LIU board if the wall socket is operational. 2. Replace the operation panel assembly if you don't hear the "click" sound. 3. Examine the speaker connection harness between the LIU and the main power board. 4. Use Tech Mode/Modem Test to check if the speaker and amplifier function correctly. Replace the main board if the speaker and amplifier operate correctly. 4.6.2 DEFECTIVE MF DIAL Description: MF Dial does not function correctly. Cause Solution 1. Telephone line cord is not securely connected to the TEL LINE. 2. No "click" sound is heard when the OHD key is pressed. 3. Faulty harness connection between the LIU and the main board. 4. Speaker is not correctly connected. 1. Test the wall socket by plugging in a standard telephone. Replace the LIU board if the wall socket is operational. 2. Replace the operation panel assembly if you don't hear the "click" sound. 3. Examine the speaker connection harness between the LIU and the main power board. 4. Use Tech Mode/Modem Test to check if the speaker and amplifier function correctly. Replace the LIU and main board in sequence if the speaker and amplifier function correctly. B273 4-28 SM