Read Sharp AL-840 (serv.man9) Service Manual online
SELF DIAG CODE MESSAGE
L3
No
C2
PHENOMENON
DISPLAY
CODE
MAIN CODE
L3
SUB CODE
00
LAMP
TITLE
Scanner (reading) return trouble
DETAIL
1) The scanner (reading) dose not return.
2) The scanner (reading) return completion is not recognized.
2) The scanner (reading) return completion is not recognized.
SECTION
Scanner (reading)
ITEM
TYPE (MODE)
User
Warning
Service
YES
Trouble
YES
Other
Other
OPERATION MODE
Copy
Machine operation when the
message is displayed
message is displayed
Stop
NOTE
BASIC CAUSE 1
Though the specified number (pulses) of the scanner (reading) motor return (motor reverse rotation) signal is outputted, the
scanner home position sensor (MHP) ON is not recognized.
scanner home position sensor (MHP) ON is not recognized.
CASE 1
No
TROUBLE POSITION
CAUSE
CAUSE
The scanner (reading) mechanism operation is not smooth.
1) Scanner (reading) mechanism lock
2) Scanner (reading) mechanism wear
1) Scanner (reading) mechanism lock
2) Scanner (reading) mechanism wear
REMEDY
(Check)
1) Scanner (reading) drive section assembly
2) Scanner (reading) sliding section 9rail, shaft)
1) Scanner (reading) drive section assembly
2) Scanner (reading) sliding section 9rail, shaft)
(Remedy)
1) Grease up
2) Scanner (reading) section parts replacement
3) Rest the trouble with SIM 14.
1) Grease up
2) Scanner (reading) section parts replacement
3) Rest the trouble with SIM 14.
(After work)
1) When the scanner (reading) section parts are disassembled, adjust.
1) When the scanner (reading) section parts are disassembled, adjust.
NOTE
CASE 2
No
TROUBLE POSITION
CAUSE
CAUSE
Scanner home position sensor (MHP) signal recognition error
1) Scanner home positions sensor (MHP) trouble
2) MCU PWB scanner home position sensor (MHP) input circuit trouble
1) Scanner home positions sensor (MHP) trouble
2) MCU PWB scanner home position sensor (MHP) input circuit trouble
REMEDY
(Check)
1) Scanner home position sensor (MHP)
2) MCU PWB scanner home position sensor (MHP) input circuit
1) Scanner home position sensor (MHP)
2) MCU PWB scanner home position sensor (MHP) input circuit
(Remedy)
1) Scanner home position sensor (MHP) replacement
2) MCU PWB replacement
3) Reset the trouble with SIM 14.
1) Scanner home position sensor (MHP) replacement
2) MCU PWB replacement
3) Reset the trouble with SIM 14.
(After work)
1) When the MCU PWB is replaced, perform simulations to input various set values and
1) When the MCU PWB is replaced, perform simulations to input various set values and
adjustment values.
NOTE
CASE 3
No
TROUBLE POSITION
CAUSE
CAUSE
Scanner (reading) motor drive trouble
1) Scanner (reading) motor trouble
2) MCU PWB scanner (reading) motor control circuit trouble
1) Scanner (reading) motor trouble
2) MCU PWB scanner (reading) motor control circuit trouble
REMEDY
(Check)
1) Scanner (reading) motor
2) MCU PWB scanner (reading) motor control circuit
1) Scanner (reading) motor
2) MCU PWB scanner (reading) motor control circuit
(Remedy)
1) Scanner (reading) motor replacement
2) MCU PWB replacement
3) Reset the trouble with SIM 14
1) Scanner (reading) motor replacement
2) MCU PWB replacement
3) Reset the trouble with SIM 14
(After work)
1) When the MCU PWB is replaced, perform simulations to input various set values and
1) When the MCU PWB is replaced, perform simulations to input various set values and
adjustment values.
NOTE
10 – 4
Click on the first or last page to see other AL-840 (serv.man9) service manuals if exist.