DOWNLOAD Panasonic UF-585 / UF-595 (serv.man2) Service Manual ↓ Size: 9.77 MB | Pages: 127 in PDF or view online for FREE

130

This section explains general troubleshooting procedures for the 400 series of Information Codes. These errors are primarily 
caused by poor telephone line quality (loss, noise, echo, etc.). This unit is furnished with Service Mode 1 to assist in troubleshooting 
line quality problems.
It is suggested that both the transmitting unit and receiving unit be adjusted. This section gives relevant parameters in Service 
Mode 1 for the transmitting and receiving sides. If no improvement is realized after the parameters are adjusted, it is recommended 
that the parameters be returned to the default settings.

131

START

Yes

Make a copy.

No

No

Yes

Is the printed copy normal?

Perform a transmission test
to a reference fax unit.

Is the LED Array lit?

Does CN1, pin 1 on the 
SCA/SCB PCB measure
+24 VDC? 

Yes

No

Yes

No

Are CN7 (SCA/SCB PCB) 
and CN30 (CCD PCB)
connected  properly?

Connect them correctly.

Replace the LVPS.

Does nLEDON go Low 
when the scan starts?

Check CN1 on the SCA/
SCB PCB and the LED
harness. 

Does the problem still
occur?

Replace the LED Array.

The receiving unit may be
defective.

1. Replace the Scanner
    Block.
2. Replace the SCA/SCB PCB.

Replace the SCA/SCB PCB.

Is the transmitted copy
normal?

No

Yes

No

No

1. Check CN8 (SCA/SCB PCB)
    and CN25 (LCU PCB).
2. Check the telephone line cable.
    Replace if necessary.

Does poor transmitted copy
appear when transmitting to
a specific receiver?

Telephone line quality is
poor.

END

Yes

Yes

132

START

END

No

Yes

Does the unit proceed to
Phase B?

1. Set documents on the ADF correctly.

4. Refer to Sect. 4.6.

3. The called party is busy.

2. Check the telephone line connection.

Are you using One-Touch dialing
or ABBR. dialing?

Are you using direct dialing?

No

Yes

Check the registered telephone number.

Is the Monitor Volume too loud or
too low?

No

Yes

Check the dialed telephone number.

No

Yes

Adjust the monitor volume.

133

START

END

Yes

No

Does the ID display?

1. No ID function at the remote unit.
2. The ID is not set for the remote unit.

Does the Verification Stamp
operate?

Is the copy quality OK?

Yes

No

1. Set "STAMP=ON"
2. Check CN3 (SCA/SCB PCB).
3. Replace the Stamp Solenoid.
4. Replace the SCA/SCB PCB.

Any other problems?

Yes

No

Make a copy and refer to Sect. 4.4.16

Yes

No

See Sect. 4.3 (Troubleshooting  using
information  codes).