Read Sharp AL-840 (serv.man9) Service Manual online
SELF DIAG CODE MESSAGE
U2
No
C15
PHENOMENON
DISPLAY
CODE
MAIN CODE
U2
SUB CODE
06
LAMP
TITLE
RAM (MCU PWB) trouble (read/write error)
DETAIL
RAM (MCU PWB) read/write operation trouble
SECTION
MCU PWB
RAM
ITEM
TYPE (MODE)
User
Warning
Service
YES
Trouble
YES
Other
Other
OPERATION MODE
All modes
Machine operation when the
message is displayed
message is displayed
Stop
NOTE
BASIC CAUSE 1
RAM (MCU PWB) read/write operation trouble
CASE 1
No
TROUBLE POSITION
CAUSE
CAUSE
RAM (MCU PWB) read/write operation trouble
RAM (MCU PWB) trouble
RAM (MCU PWB) trouble
REMEDY
(Check)
(Remedy)
1) MCU PWB replacement
2) Reset the trouble with SIM 14.
3) Use simulations to set various set values and adjustment values.
1) MCU PWB replacement
2) Reset the trouble with SIM 14.
3) Use simulations to set various set values and adjustment values.
(After work)
NOTE
SELF DIAG CODE MESSAGE
C1
No
C16
PHENOMENON
DISPLAY
CODE
MAIN CODE
CH
SUB CODE
LAMP
"CH" ON
TITLE
Cabinet open/close detection switch trouble
DETAIL
1) Cabinet (operation unit) open/close detection switch malfunction
2) Cabinet (operation unit) open/close detection switch signal is not recognized.
2) Cabinet (operation unit) open/close detection switch signal is not recognized.
SECTION
Power PWB unit
ITEM
TYPE (MODE)
User
YES
Warning
YES
Service
YES
Trouble
YES
Other
Other
OPERATION MODE
All modes
Machine operation when the
message is displayed
message is displayed
Stop
NOTE
BASIC CAUSE 1
Cabinet (operation unit) open/close detection switch signal is not recognized.
CASE 1
No
TROUBLE POSITION
CAUSE
CAUSE
Cabinet (operation unit) open/close detection switch signal recognition error
1) Cabinet (operation unit) open/close detection switch trouble
2) MCU PWB cabinet (operation unit) open/close detection switch signal input circuit trouble
1) Cabinet (operation unit) open/close detection switch trouble
2) MCU PWB cabinet (operation unit) open/close detection switch signal input circuit trouble
REMEDY
(Check)
1) Cabinet (operation unit) open/close detection switch
2) MCU PWB cabinet (operation unit) open/close detection switch signal input circuit
1) Cabinet (operation unit) open/close detection switch
2) MCU PWB cabinet (operation unit) open/close detection switch signal input circuit
(Remedy)
1) Cabinet (operation unit) open/close detection switch replacement
2) MCU PWB replacement
3) Power PWB replacement
1) Cabinet (operation unit) open/close detection switch replacement
2) MCU PWB replacement
3) Power PWB replacement
(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 – 14
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