UB-5365, UB-5865 (serv.man2) - Panasonic Other Service Manuals Service Manual (repair manual). Page 103

103

F1

ROM error

1. Data from the SOC (IC1000) on the

CONTROL Board or from the Flash
ROM (IC1006) is faulty.

2. Flash ROM (IC1006) access error

1. Check the soldering condition of the Flash ROM (IC1006).
2. Replace the CONTROL Board when the erroneous part cannot be speci-

fied including the surrounding circuit.

F2

RAM error

1. Data from the SOC (IC1000) on the

CONTROL Board or from the
SDRAM (IC1004) is faulty.

2. SDRAM (IC1004) access error

1. Check the soldering condition of the SDRAM (IC1004).
2. Replace the CONTROL Board when the faulty part cannot be specified

including the surrounding circuit.

F3

SOC initialization
error

SOC (IC1000) on the CONTROL Board
is erroneous.

Replace the CONTROL Board.

F4

AFE initialization
error

1. Data from the SOC (IC1000) on the

CONTROL Board or from the AFE
(IC1015) is faulty.

2. AFE (IC1015) access error

1. Check the soldering condition of the AFE (IC1015).
2. Replace the CONTROL Board when the erroneous part cannot be 

specified including the surrounding circuit.

F5

The temperature of
the Thermal Printer
Head exceeded
the regulated
value.
  

1. Thermal Printer Head is faulty or its

temperature is extremely high.

1. On the test mode "HJ", perform the printing test.
2. When the printed data is not correct, print another pattern.
3. If the printing is still not correct, replace the Thermal Printer Head.
4. Replace the CONTROL Board when the print data is correct.

2. The temperature control circuit of the

Thermal Printer Head doesn’t work 
correctly.

1. Measure the 6th pin voltage of CN1011.
2. Replace the CONTROL Board when the voltage is 1 V or more.
3. Replace the Thermal Printer Head when the voltage is less than 1 V.

F9

Program error

Software error occurred during
program execution.

1. Turn off the power switch then turn it on again.
2. When the initial check is completed, check that "1" is displayed on the

Display Window.

3. Press the "Copy Key "again and check printing and data storage.
4. If "F9" error occurs, replace the CONTROL Board.

U11

No paper error
 
 

1. The copy paper is not set on the

Paper Cover.

Set the copy paper.

2. The Actuator of the Paper Sensor is

faulty or is not operating 
appropriately.

1. Check the Actuator mechanism.

→ Is the Actuator released from the sensor (IC601) on the PAPER 

SENSOR Board when there is copy paper on the Paper Sensor?

2. Re-install or replace the Actuator.

3. The Paper Sensor or its monitor 

circuit is not operating correctly.

1. Check the connection between CN600 (PAPER SENSOR Board) and

CN1007 (CONTROL Board).

2. Check the soldering state of the PAPER SENSOR Board, and if there is a

problem, provide resoldering.

3. Check the soldering state of chip resistor R1173 on the CONTROL

Board, and if there is a problem, provide resoldering.

4. Check the following signals on the PAPER SENSOR Board.
 (1) CN600-1st pin: +3.3 V
 (2) CN600-2nd pin: Approx. +3.3 V (when there is no paper)
5. Check the following signals on the CONTROL Board.
 (1) CN1007-1st pin: +3.3 V
 (2) CN1007-2nd pin: Approx. +3.3 V (when there is no paper)
6. Replace faulty cables or connectors.
7. Replace erroneous parts or the PAPER SENSOR Board.
8. Replace the CONTROL Board.