Panasonic UF-5500 Service Manual page 172

UF-5500 / 4500
2. Check the paper exit sensor.......... "PAPER JAMMED"
Check the voltage at pin AD20 of
IC300 (Main Board).
The photo sensor transmitted: 0V
(Recording paper exists.)
The photo sensor interrupted: 3.3V
(No recording paper.)
OK
IC300 NG
3. Check the read position sensor .......... "CHECK DOCUMENT"
Check the voltage at pin AD22 of
IC300 (Main Board).
The sensor lever pressed: 3.3V
(A document is on read position.)
The sensor lever released: 0V
(A document is out of read position.)
OK
IC300 NG
4. Check the registration & manual paper sensor .......... "PAPER JAMMED"
Check the voltage at pin AF20 of
IC300 (Main Board).
The sensor lever pressed: 0V
(A paper exists on sensor position.)
The sensor lever released: 3.3V
(A paper does not exist.)
OK
IC300 NG
5. Check the print timing sensor .......... "PAPER JAMMED"
Check the voltage at pin W26 of
IC300 (Main Board).
The sensor lever pressed: 0V
(A paper is on printing position.)
The sensor lever released: 3.3V
(A paper does not exist.)
OK
IC300 NG
6. Check the document sensor
Check the voltage at pin AF23 of IC300
(Main Board).
The sensor lever pressed: 3.3V
(A document is set on the ADF.)
The sensor lever released: 0V
(No documents.)
OK
IC300 NG
Check the connection of
signal line and check the
NG
soldering at R510, R506,
C508.
(Main Board).
Check the voltage at pin AD20
of IC300 again.
Check the connection of signal
line and check the soldering at
NG
R703, R706, C704 (Main Board).
Check the voltage at pin AD22 of
IC300.
Check the connection of signal
line and check the soldering at
NG
R582, R583, C565 (Main Board).
Check the voltage at pin AF20 of
IC300.
Check the connection of signal
line and check the soldering at
NG
R587, R585, C569 (Main Board).
Check the voltage at pin W26 of
IC300.
Check the connection of signal
line and check the soldering at
NG
R705, R704, C701 (Main Board).
Check the voltage at pin AF23 of
IC300.
172
Check the connection of
signal line and check the
NG
soldering at R54 (Fuser
Board).
Check the voltage at pin
AD20of IC300 again.
NG
Replace PS50
(Fuser Board)
Check the connection of signal
line and check the soldering at
NG
R52, J57 (ADF Board).
Check the voltage at pin AD22 of
IC300 again.
NG
Replace PS53 (ADF Board)
Check the connection of signal
line and check the soldering at
NG
R51 (Regist & Ptop Board).
Check the voltage at pin AF20
of IC300 again.
NG
Replace PS51 (Regist & PTOP Board)
Check the connection of signal line and
check the soldering at R50 (Regist &
NG
PTOP Board).
Check the voltage at pin W26 of IC300
again.
NG
Replace PS52 (Regist & PTOP Board)
Check the connection of signal
line and check the soldering at
NG
R53 (ADF Board).
Check the voltage at pin AF23
of IC300 again.
NG
Replace PS54 (ADF Board)