Troubleshooting - HP PageWriter XL M1705B Service Manual

Troubleshooting
Table C-l. Transmit and Fax
Symptom
Message: No answer at
site.
Cause
Cabling problems between fax
modem and cardiograph.
Telephone line or telephone cable
defective.
Corrective Action
Perform Extended Self-test modem test.
Substitute normal telephone for fax
modem and dial number. Ensure that
fax answers with high-pitched tone.
Extended Self-test modem test RS-232 cable not plugged in or
Plug in to cardiograph; if defective,
railure
defective.
replace.
Power cable not plugged in or Plug in to cardiograph and turn on AC;
defective, or cardiograph AC off.
if defective, replace.
Fax modem not turned on.
Turn on Fax modem. Check for
unplugged or defective power cable.
Fax modem battery bad. Replace battery.
Defective fax modem. Replace fax modem.
Defective CPU assembly.
Replace CPU assembly.
Unable to transmit or receive.
Phone cable unplugged or defective.
Plug in phone cable; if defective,
Modem passes Extended
replace.
Self-test.
Configuration changed without Cycle power on cardiograph.
cycling power.
Defective fax modem.
Replace fax modem.
Defective CPU assembly. Replace CPU assembly.
9V power missing.
Check voltage at, cardiograph power
connector.
ECG disk is write-protected.
Move write-protector tab.
Black or white lines appear on
Noisy phone lines lose fax data. Call again, if possible on another phone
he fax.
line.
Note .I
v
The fax modem does not require a battery for operation when the
carcliograph is connected to AC power. However, the fax modem
cannot receive when operating from the battery.
M1756A Direct Digital ECG Fax C-7