Read Sharp MX-6240N / MX-7040N (serv.man26) Service Manual online
MX-7040N TROUBLESHOOTING 7 – 5
(2) Trouble detection sequence and trouble cancel sequence when turning on the power
The process has priority when the power is turned ON with the MFP.
When booting, two or more troubles in the list below may be detected. In this case, the trouble code of higher priority is displayed.
When booting, two or more troubles in the list below may be detected. In this case, the trouble code of higher priority is displayed.
Process sequence
Error code
Content
First
(Low priority)
Last
(High priority)
U2
60
Watermark check error
50
HDD user authentication data check sum error
30
MFPC PWB and PCU PWB manufacturing No. data inconsistency
A0
15
Incompatible DSK BOOT and program firmware
20
Conflict firmware and EEPROM data version (MFP)
U2
11
MFPC PWB EEPROM counter check sum error
00
MFP EEPROM read/write error
E7
48
Scanner expansion PWB (ACRE) ASIC memory error
42
Image data trouble (Scanner expansion PWB (ACRE) ASIC)
96
MFPC PWB DIMM memory check error (MFPC PWB)
95
Printer PWB DIMM memory check error (PRINTER section)
U1
01
Battery trouble
E7
60
Combination error between PWB and firmware (MFPC PWB detection)
A0
04
Scanner expansion PWB (ACU) (ACRE) ROM error
(Power ON sequence)
H3, H4, H5
Saved in the PCU
U1
Saved in the MFP
U2
Saved in each block
U6-09
Saved in the PCU
F3-12, 22
Saved in the PCU
(Trouble cancel sequence)
When executing SIM 13, 14, 15, 16
H3, H4, H5, U1, U2, U6, F3 trouble check
SIM13: U1 trouble cancel
SIM14: H3, H4, H5
SIM14: H3, H4, H5
(Color mode inhibition) cancel
SIM15: U6 trouble cancel,
F3-12, F3-22 trouble cancel
SIM16: U2 trouble cancel
Each block
MFP event
manager
manager
Communication of trouble status
[Trouble code] [Trouble status]
[Trouble code] [Trouble status]
Trouble cancel command
When the power is turned on,
check is made in each block.
check is made in each block.
Trouble cancel status
is communicated.
is communicated.
Trouble cancel
(The trouble memory is
initialized.)
(The trouble memory is
initialized.)
sim task
Trouble check is preformed in each block,
and the result is sent to the MFP.
and the result is sent to the MFP.
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