Trouble Codes - Toshiba DP1200 Service Manual

DP1200/1500
Main code Sub code
67 14 PCL PWB program download
Used to download the control program for PCL PWB.
(Operating procedure)
1. Download procedure
1) Enter the simulation code, and the Ready LED will light up and the On-line LED will go off.
2) Press the PRINT switch, and the Ready LED will go off and the Flash ROM data will be deleted.
3) After completion of deletion, the On-line LED lights up.
4) Get your PC into the DOS mode and execute "COPY /Bxxx.BIN LPT1", and downloading will be started and
5) After completion of downloading, execute SUM check. If there is no problem, the On-line LED will go off and
6) Turn OFF/ON the power.
2. In case of a fail in downloading, turn OFF/ON the power and perform procedure 1.
3. Items required for Flash downloading
1) PC
2) Parallel cable
3) Program data file

4. TROUBLE CODES

A. Trouble codes list
Main Sub
Trouble content
code code
HSYNC not detected.
E7 03
CCD white level trouble
E7 04
E7 05 CCD black level trouble
E7 12 Shading trouble (White correction)
ASIC connection trouble
E7 14
E7 15 Copy lamp disconnection trouble
Abnormal output of laser
E7 16
Feeding is not completed within
the specified time after starting
L1 00
feeding.
Return is not completed within the
specified time.
L3 00
L4 01 Main motor lock
Polygon motor lock
L6 10
H2 00 Thermistor open detection
Heat roller abnormally high
H3 00
temperature
Heat roller abnormally low
H4 00
temperature
U2 01 Counter sum check error
EEPROM serial communication
U2 04
error
the On-line LED will blink.
the Ready LED will light up. If there is any problem, "F9-10:PCL PWB trouble" is displayed.
LSU (laser diode, reception element, APC circuit) trouble
LSU drive circuit (ASIC) trouble
CCD drive circuit (CCD PWB, ASIC harness) trouble
Copy lamp lighting trouble (Copy lamp, invertor PWB)
CCD drive circuit (CCD PWB, ASIC, harness) trouble
Dirt on white plate for scanning white level
Improper connection between CPU and ASIC (pattern cut, improper connection of lead
pin)
Copy lamp or copy lamp drive circuit (invertor PWB) trouble Copy lamp disconnection
LSU (laser diode, reception element, APC circuit) trouble
LSU drive circuit (ASIC) trouble
When the mirror base is returned for the specified time (6 sec) in mirror initializing
after turning on the power, the mirror home position sensor (MHPS) does not turn
OFF. Or when the mirror base is fed for the specified time (about 6 sec) after start of
copy return, the mirror home position sensor (MHPS) does not turn OFF.
When the mirror base is returned for the specified time (6 sec) in mirror initializing
after turning on the power, the mirror home position sensor (MHPS) does not turn
ON. Or when the mirror base is returned for the specified time (about 6 sec) after start
of copy return, the mirror home position sensor (MHPS) does not turn ON.
When the main motor encoder pulse is not detected for 100msec.
The lock signal (specified rpm signal) does not return within a certain time (about
20sec) from starting the polygon motor rotation
The fusing thermistor is open.
The fusing temperature rises above 240°C.
The fusing temperature does not reach 185°C within 27sec of turning on the power,
or the fusing temperature keeps at 140°C.
When the counter check sum value stored in the EEPROM is abnormal.
When a communication trouble occurs with the EEPROM.
Content
Detail of trouble
10 – 13