Dell 1815 Mono Laser Service Manual page 111

Troubleshooting
7.4.3 Defective FAX FORWARD/RECEIVE
The FAX FORWARD/RECEIVE is not functioning.
• Description
Check and Cause
1. Check if you can catch a dial tone by pressing
OHD.
2. Check if you can catch a RECEIVE tone while
MODEM testing in the TECH Mode.
7.4.4 Defective FAX FORWARD
RECEIVE is functioning, but FORWARD is not functioning or the received data are broken.
• Description
Check and Cause
1. Check if there is NOISE when pressing on-hook
dial.
2. Check the RECEIVE condition by trying to forward
a FAX to another fax machine from the forwarding
side FAX.
3. Check if the telephone line connected to the
Product is contaminated or gets stripped of f or
down.
Service Manual
7-18
Solution
1. If the MODEM testing is normal and there is no dial
tone, then try to replace the LIU B'd.
2. If the MODEM testing is abnormal, try to replace the
Main B'd.
Solution
1. If it makes NOISE while using on-hook dial, replace or
repair the telephone line.