AL-840 (serv.man9). AL800 840 Service Manual-Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 16

No

C18

CASE 1

No

TROUBLE POSITION
CAUSE

Paper entry detector (PIN) signal recognition error
1) Paper entry (PIN) trouble
2) Paper entry detector (PIN) signal input circuit trouble

REMEDY

(Check)
1) Paper entry detector (PIN)
2) MCU PWB paper entry detector (PIN) signal input circuit

(Remedy)
1) Paper entry detector (PIN) replacement
2) MCU PWB replacement

(After work)
1) When the MCU PWB is replaced, perform simulations to input various set values and

adjustment values.

NOTE

CASE 2

No

TROUBLE POSITION
CAUSE

Paper feed roller does not feed paper normally.
1) Paper feed roller clutch drive circuit trouble
2) Paper feed roller clutch trouble
3) Paper feed roller trouble
4) Paper separation sheet trouble

REMEDY

(Check)
1) MCU PWB paper feed roller clutch drive circuit
2) Paper feed roller clutch 
3) Paper feed roller
4) Paper separation sheet

(Remedy)
1) MCU PWB replacement
2) Paper feed roller clutch replacement
3) Paper feed roller replacement
4) Paper separation sheet replacement

(After work)

NOTE

SELF DIAG CODE MESSAGE

E2

No

C19

PHENOMENON

DISPLAY

CODE

MAIN CODE

SUB CODE

LAMP

Paper jam lamp blinking

TITLE

Paper jam (paper entry section)

DETAIL

1) Paper entry detector (PIN) malfunction
2) Paper entry detector (PIN) signal recognition error

SECTION

Paper entry, transfer

ITEM

TYPE (MODE)

User

YES

Warning

YES

Service

YES

Trouble

YES

Other

Other

OPERATION MODE

All modes

Machine operation when the
message is displayed

Stop

NOTE

BASIC CAUSE 1

Paper entry detector (PIN) signal recognition error

CASE 1

No

TROUBLE POSITION
CAUSE

Paper entry detector (PIN) signal recognition error
1) Paper entry detector (PIN) trouble
2) Paper entry detector (PIN) signal input circuit trouble

REMEDY

(Check)
1) Paper entry detector (PIN)
2) MCU PWB paper entry detector (PIN) signal input circuit

(Remedy)
1) Paper entry detector (PIN) replacement
2) MCU PWB replacement

(After work)
1) When the MCU PWB is replaced, perform simulations to input various set values and

adjustment values.

NOTE

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